bitPickups/friendica_2019-12_sharedHosting_hotFix
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Merge remote-tracking branch 'refs/remotes/friendica/develop' into develop

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Hypolite Petovan 2017-04-02 10:01:30 -04:00
parent 87aac45230 d9451ef969
commit 3e51ebd499
482 changed files with 2193 additions and 17315 deletions
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3
.gitignore vendored
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@ -51,3 +51,6 @@ nbproject
#ignore things from transifex-client
venv/
#ignore git projects in vendor
vendor/**/.git

2
INSTALL.txt
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@ -37,7 +37,7 @@ local .htaccess file
- PHP *command line* access with register_argc_argv set to true in the
php.ini file [or see 'poormancron' in section 8]
- curl, gd (with at least jpeg support), mysql, mbstring, mcrypt, and openssl extensions
- curl, gd (with at least jpeg support), mysql, mbstring and openssl extensions
- some form of email server or email gateway such that PHP mail() works

4
boot.php
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@ -17,7 +17,7 @@
* easily as email does today.
*/
require_once('include/autoloader.php');
require_once(__DIR__ . DIRECTORY_SEPARATOR. 'vendor' . DIRECTORY_SEPARATOR . 'autoload.php');
use \Friendica\Core\Config;
@ -29,7 +29,6 @@ require_once('include/datetime.php');
require_once('include/pgettext.php');
require_once('include/nav.php');
require_once('include/cache.php');
require_once('library/Mobile_Detect/Mobile_Detect.php');
require_once('include/features.php');
require_once('include/identity.php');
require_once('update.php');
@ -648,7 +647,6 @@ class App {
set_include_path(
'include' . PATH_SEPARATOR
. 'library' . PATH_SEPARATOR
. 'library/phpsec' . PATH_SEPARATOR
. 'library/langdet' . PATH_SEPARATOR
. '.' );

34
composer.json Normal file
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@ -0,0 +1,34 @@
{
"name": "friendica/friendica",
"description": "A decentralized social network part of The Federation",
"type": "project",
"keywords": [
"social network",
"dfrn",
"ostatus",
"diaspora"
],
"licence": "GNU-Affero",
"support": {
"issues": "https://github.com/friendica/friendica/issues"
},
"require": {
"ezyang/htmlpurifier": "~4.7.0",
"mobiledetect/mobiledetectlib": "2.8.*"
},
"autoload": {
"psr-4": {
"Friendica\\": "src/"
}
},
"config": {
"autoloader-suffix": "Friendica",
"optimize-autoloader": true,
"preferred-install": "dist"
},
"archive": {
"exclude": [
"log", "cache", "/photo", "/proxy"
]
}
}

114
composer.lock generated Normal file
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@ -0,0 +1,114 @@
{
"_readme": [
"This file locks the dependencies of your project to a known state",
"Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
"This file is @generated automatically"
],
"content-hash": "49b00f1ed3192e5173bd5577a3b91ba2",
"packages": [
{
"name": "ezyang/htmlpurifier",
"version": "v4.7.0",
"source": {
"type": "git",
"url": "https://github.com/ezyang/htmlpurifier.git",
"reference": "ae1828d955112356f7677c465f94f7deb7d27a40"
},
"dist": {
"type": "zip",
"url": "https://api.github.com/repos/ezyang/htmlpurifier/zipball/ae1828d955112356f7677c465f94f7deb7d27a40",
"reference": "ae1828d955112356f7677c465f94f7deb7d27a40",
"shasum": ""
},
"require": {
"php": ">=5.2"
},
"type": "library",
"autoload": {
"psr-0": {
"HTMLPurifier": "library/"
},
"files": [
"library/HTMLPurifier.composer.php"
]
},
"notification-url": "https://packagist.org/downloads/",
"license": [
"LGPL"
],
"authors": [
{
"name": "Edward Z. Yang",
"email": "admin@htmlpurifier.org",
"homepage": "http://ezyang.com"
}
],
"description": "Standards compliant HTML filter written in PHP",
"homepage": "http://htmlpurifier.org/",
"keywords": [
"html"
],
"time": "2015-08-05T01:03:42+00:00"
},
{
"name": "mobiledetect/mobiledetectlib",
"version": "2.8.25",
"source": {
"type": "git",
"url": "https://github.com/serbanghita/Mobile-Detect.git",
"reference": "f0896b5c7274d1450023b0b376240be902c3251c"
},
"dist": {
"type": "zip",
"url": "https://api.github.com/repos/serbanghita/Mobile-Detect/zipball/f0896b5c7274d1450023b0b376240be902c3251c",
"reference": "f0896b5c7274d1450023b0b376240be902c3251c",
"shasum": ""
},
"require": {
"php": ">=5.0.0"
},
"require-dev": {
"phpunit/phpunit": "*"
},
"type": "library",
"autoload": {
"classmap": [
"Mobile_Detect.php"
],
"psr-0": {
"Detection": "namespaced/"
}
},
"notification-url": "https://packagist.org/downloads/",
"license": [
"MIT"
],
"authors": [
{
"name": "Serban Ghita",
"email": "serbanghita@gmail.com",
"homepage": "http://mobiledetect.net",
"role": "Developer"
}
],
"description": "Mobile_Detect is a lightweight PHP class for detecting mobile devices. It uses the User-Agent string combined with specific HTTP headers to detect the mobile environment.",
"homepage": "https://github.com/serbanghita/Mobile-Detect",
"keywords": [
"detect mobile devices",
"mobile",
"mobile detect",
"mobile detector",
"php mobile detect"
],
"time": "2017-03-29T13:59:30+00:00"
}
],
"packages-dev": [],
"aliases": [],
"minimum-stability": "stable",
"stability-flags": [],
"prefer-stable": false,
"prefer-lowest": false,
"platform": [],
"platform-dev": []
}

98
doc/Composer.md Normal file
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@ -0,0 +1,98 @@
Using Composer
==============
* [Home](help)
* [Developer Intro](help/Developers-Intro)
Friendica uses [Composer](https://getcomposer.org) to manage dependencies libraries and the class autoloader both for libraries and namespaced Friendica classes.
It's a command-line tool that downloads required libraries into the `vendor` folder and makes any namespaced class in `src` available through the whole application through `boot.php`.
* [Class autoloading](help/autoloader)
## How to use Composer
If you don't have Composer installed on your system, Friendica ships with a copy of it at `util/composer.phar`.
For the purpose of this help, all examples will use this path to run Composer commands, however feel free to replace them with your own way of calling Composer.
Composer requires PHP CLI and the following examples assume it's available system-wide.
### Installing/Updating Friendica
#### From Archive
If you just unpacked a Friendica release archive, you don't have to use Commposer at all, all the required libraries are already bundled in the archive.
#### Installing with Git
If you prefer to use `git`, you will have to run Composer to fetch the required libraries and build the autoloader before you can run Friendica.
Here are the typical commands you will have to run to do so:
````
~> git clone https://github.com/friendica/friendica.git friendica
~/friendica> cd friendica
~/friendica> util/composer.phar install
````
That's it! Composer will take care of fetching all the required libraries in the `vendor` folder and build the autoloader to make those libraries available to Friendica.
#### Updating with Git
Updating Friendica to the current stable or the latest develop version is easy with Git, just remember to run Composer after every branch pull.
````
~> cd friendica
~/friendica> git pull
~/friendica> util/composer.phar install
````
And that's it. If any library used by Friendica has been upgraded, Composer will fetch the version currently used by Friendica and refresh the autoloader to ensure the best performances.
### Developing Friendica
First of all, thanks for contributing to Friendica!
Composer is meant to be used by developers to maintain third-party libraries required by Friendica.
If you don't need to use any third-party library, then you don't need to use Composer beyond what is above to install/update Friendica.
#### Adding a third-party library to Friendica
Does your shiny new [Plugin](help/Plugins) need to rely on a third-party library not required by Friendica yet?
First of all, this library should be available on [Packagist](https://packagist.org) so that Composer knows how to fetch it directly just by mentioning its name in `composer.json`.
This file is the configuration of Friendica for Composer. It lists details about the Friendica project, but also a list of required dependencies and their target version.
Here's a simplified version of the one we currently use on Friendica:
````json
{
"name": "friendica/friendica",
"description": "A decentralized social network part of The Federation",
"type": "project",
...
"require": {
"ezyang/htmlpurifier": "~4.7.0",
"mobiledetect/mobiledetectlib": "2.8.*"
},
...
}
````
The important part is under the `require` key, this is a list of all the libraries Friendica may need to run.
As you can see, at the moment we only require two, HTMLPurifier and MobileDetect.
Each library has a different target version, and [per Composer documentation about version constraints](https://getcomposer.org/doc/articles/versions.md#writing-basic-version-constraints), this means that:
* We will update HTMLPurifier up to version 4.8.0 excluded
* We will update MobileDetect up to version 2.9.0 excluded
There are other operators you can use to allow Composer to update the package up to the next major version excluded.
Or you can specify the exact version of the library if you code requires it, and Composer will never update it although it isn't recommended.
To add a library, just add its Packagist identifier to the `require` list and set a target version string.
Then you should run `util/composer.phar update` to add it to your local `vendor` folder and update the `composer.lock` file that specifies the current versions of the dependencies.
#### Updating an existing dependency
If a package needs to be updated, whether to the next minor version or to the next major version provided you changed the adequate code in Friendica, simply edit `composer.json` to update the target version string of the relevant library.
Then you should run `util/composer.phar update` to update it in your local `vendor` folder and update the `composer.lock` file that specifies the current versions of the dependencies.
Please note that you should commit both `composer.json` and `composer.lock` with your work every time you make a change to the former.

12
doc/Developers-Intro.md
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@ -6,8 +6,7 @@ Where to get started to help improve Friendica?
Do you want to help us improve Friendica?
Here we have compiled some hints on how to get started and some tasks to help you choose.
A project like Friendica is the sum of many different contributions.
**Very different skills are required to make good software.
Some of them involve coding, others do not.**
**Very different skills are required to make good software, not all of them involve coding!**
We are looking for helpers in all areas, whether you write text or code, whether you spread the word to convince people or design new icons.
Whether you feel like an expert or like a newbie - join us with your ideas!
@ -47,6 +46,14 @@ We can't promise we have the right skills in the group but we'll try.
Programming
---
### Composer
Friendica uses [Composer](https://getcomposer.org) to manage dependencies libraries and the class autoloader both for libraries and namespaced Friendica classes.
It's a command-line tool that downloads required libraries into the `vendor` folder and makes any namespaced class in `src` available through the whole application through `boot.php`.
* [Using Composer](help/Composer)
###Coding standards
For the sake of consistency between contribution and general code readability, Friendica follows the widespread [PSR-2 coding standards](http://www.php-fig.org/psr/psr-2/) to the exception of a few rules.
@ -120,6 +127,7 @@ Ask us to find out whom to talk to about their experiences.
Do not worry about cross-posting.
###Client software
As Friendica is using a [Twitter/GNU Social compatible API](help/api) any of the clients for those platforms should work with Friendica as well.
Furthermore there are several client projects, especially for use with Friendica.
If you are interested in improving those clients, please contact the developers of the clients directly.

1
doc/Home.md
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@ -47,6 +47,7 @@ Friendica Documentation and Resources
* [Protocol Documentation](help/Protocol)
* [Database schema documantation](help/database)
* [Class Autoloading](help/autoloader)
* [Using Composer](help/Composer)
* [Code - Reference(Doxygen generated - sets cookies)](doc/html/)
* [Twitter/GNU Social API Functions](help/api)

1
doc/Install.md
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@ -30,7 +30,6 @@ Requirements
* PHP *command line* access with register_argc_argv set to true in the php.ini file
* curl, gd, mysql, hash and openssl extensions
* some form of email server or email gateway such that PHP mail() works
* mcrypt (optional; used for server-to-server message encryption)
* Mysql 5.5.3+ or an equivalant alternative for MySQL (MariaDB, Percona Server etc.)
* the ability to schedule jobs with cron (Linux/Mac) or Scheduled Tasks (Windows) (Note: other options are presented in Section 7 of this document.)
* Installation into a top-level domain or sub-domain (without a directory/path component in the URL) is preferred. Directory paths will not be as convenient to use and have not been thoroughly tested.

251
doc/autoloader.md
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@ -1,209 +1,192 @@
Autoloader
Autoloader with Composer
==========
* [Home](help)
* [Developer Intro](help/Developers-Intro)
There is some initial support to class autoloading in Friendica core.
Friendica uses [Composer](https://getcomposer.org) to manage dependencies libraries and the class autoloader both for libraries and namespaced Friendica classes.
The autoloader code is in `include/autoloader.php`.
It's derived from composer autoloader code.
It's a command-line tool that downloads required libraries into the `vendor` folder and makes any namespaced class in `src` available through the whole application through `boot.php`.
Namespaces and Classes are mapped to folders and files in `library/`,
and the map must be updated by hand, because we don't use composer yet.
The mapping is defined by files in `include/autoloader/` folder.
* [Using Composer](help/Composer)
Currently, only HTMLPurifier library is loaded using autoloader.
## A quick introduction to class autoloading
The autoloader dynamically includes the file defining a class when it is first referenced, either by instantiating an object or simply making sure that it is available, without the need to explicitly use "require_once".
## A quick introdution to class autoloading
Once it is set up you don't have to directly use it, you can directly use any class that is covered by the autoloader (currently `vendor` and `src`)
The autoloader it's a way for php to automagically include the file that define a class when the class is first used, without the need to use "require_once" every time.
Under the hood, Composer registers a callback with [`spl_autoload_register()`](http://php.net/manual/en/function.spl-autoload-register.php) that receives a class name as an argument and includes the corresponding class definition file.
For more info about PHP autoloading, please refer to the [official PHP documentation](http://php.net/manual/en/language.oop5.autoload.php).
Once is setup you don't have to use it in any way. You need a class? you use the class.
### Example
At his basic is a function passed to the "spl_autoload_register()" function, which receive as argument the class name the script want and is it job to include the correct php file where that class is defined.
The best source for documentation is [php site](http://php.net/manual/en/language.oop5.autoload.php).
Let's say you have a PHP file in `src/` that define a very useful class:
One example, based on fictional friendica code.
```php
// src/ItemsManager.php
<?php
namespace \Friendica;
Let's say you have a php file in "include/" that define a very useful class:
```
file: include/ItemsManager.php
<?php
namespace \Friendica;
class ItemsManager {
public function getAll() { ... }
public function getByID($id) { ... }
}
class ItemsManager {
public function getAll() { ... }
public function getByID($id) { ... }
}
```
The class "ItemsManager" has been declared in "Friendica" namespace.
Namespaces are useful to keep things separated and avoid names clash (could be that a library you want to use defines a class named "ItemsManager", but as long as is in another namespace, you don't have any problem)
The class `ItemsManager` has been declared in the `Friendica` namespace.
Namespaces are useful to keep classes separated and avoid names conflicts (could be that a library you want to use also defines a class named `ItemsManager`, but as long as it is in another namespace, you don't have any problem)
If we were using composer, we had configured it with path where to find the classes of "Friendica" namespace, and then the composer script will generate the autoloader machinery for us.
As we don't use composer, we need check that the autoloader knows the Friendica namespace.
So in "include/autoloader/autoload_psr4.php" there should be something like
```
$vendorDir = dirname(dirname(dirname(__FILE__)))."/library";
$baseDir = dirname($vendorDir);
return array(
"Friendica" => array($baseDir."/include");
);
```
That tells the autoloader code to look for files that defines classes in "Friendica" namespace under "include/" folder. (And btw, that's why the file has the same name as the class it defines.)
*note*: The structure of files in "include/autoloader/" has been copied from the code generated by composer, to ease the work of enable autoloader for external libraries under "library/"
Let's say now that you need to load some items in a view, maybe in a fictional "mod/network.php".
Somewere at the start of the scripts, the autoloader was initialized. In Friendica is done at the top of "boot.php", with "require_once('include/autoloader.php');".
Let's say now that you need to load some items in a view, maybe in a fictional `mod/network.php`.
In order for the Composer autoloader to work, it must first be included. In Friendica this is already done at the top of `boot.php`, with `require_once('vendor/autoload.php');`.
The code will be something like:
```
file: mod/network.php
<?php
```php
// mod/network.php
<?php
function network_content(App $a) {
$itemsmanager = new \Friendica\ItemsManager();
$items = $itemsmanager->getAll();
function network_content(App $a) {
$itemsmanager = new \Friendica\ItemsManager();
$items = $itemsmanager->getAll();
// pass $items to template
// return result
}
// pass $items to template
// return result
}
```
That's a quite simple example, but look: no "require()"!
You need to use a class, you use the class and you don't need to do anything more.
That's a quite simple example, but look: no `require()`!
If you need to use a class, you can simply use it and you don't need to do anything else.
Going further: now we have a bunch of "*Manager" classes that cause some code duplication, let's define a BaseManager class, where to move all code in common between all managers:
Going further: now we have a bunch of `*Manager` classes that cause some code duplication, let's define a `BaseManager` class, where we move all common code between all managers:
```
file: include/BaseManager.php
<?php
namespace \Friendica;
```php
// src/BaseManager.php
<?php
namespace \Friendica;
class BaseManager {
public function thatFunctionEveryManagerUses() { ... }
}
class BaseManager {
public function thatFunctionEveryManagerUses() { ... }
}
```
and then let's change the ItemsManager class to use this code
```
file: include/ItemsManager.php
<?php
namespace \Friendica;
```php
// src/ItemsManager.php
<?php
namespace \Friendica;
class ItemsManager extends BaseManager {
public function getAll() { ... }
public function getByID($id) { ... }
}
class ItemsManager extends BaseManager {
public function getAll() { ... }
public function getByID($id) { ... }
}
```
The autoloader don't mind what you need the class for. You need a class, you get the class.
It works with the "BaseManager" example here, it works when we need to call static methods on a class:
Even though we didn't explicitly include the `src/BaseManager.php` file, the autoloader will when this class is first defined, because it is referenced as a parent class.
It works with the "BaseManager" example here and it works when we need to call static methods:
```
file: include/dfrn.php
<?php
namespace \Friendica;
```php
// src/Dfrn.php
<?php
namespace \Friendica;
class dfrn {
public static function mail($item, $owner) { ... }
}
class Dfrn {
public static function mail($item, $owner) { ... }
}
```
```
file: mod/mail.php
<?php
```php
// mod/mail.php
<?php
mail_post($a){
...
\Friendica\dfrn::mail($item, $owner);
...
}
mail_post($a){
...
\Friendica\dfrn::mail($item, $owner);
...
}
```
If your code is in same namespace as the class you need, you don't need to prepend it:
```
file: include/delivery.php
<?php
```php
// include/delivery.php
<?php
namespace \Friendica;
namespace \Friendica;
// this is the same content of current include/delivery.php,
// but has been declared to be in "Friendica" namespace
// this is the same content of current include/delivery.php,
// but has been declared to be in "Friendica" namespace
[...]
switch($contact['network']) {
case NETWORK_DFRN:
if ($mail) {
$item['body'] = ...
$atom = dfrn::mail($item, $owner);
} elseif ($fsuggest) {
$atom = dfrn::fsuggest($item, $owner);
q("DELETE FROM `fsuggest` WHERE `id` = %d LIMIT 1", intval($item['id']));
} elseif ($relocate)
$atom = dfrn::relocate($owner, $uid);
[...]
[...]
switch($contact['network']) {
case NETWORK_DFRN:
if ($mail) {
$item['body'] = ...
$atom = Dfrn::mail($item, $owner);
} elseif ($fsuggest) {
$atom = Dfrn::fsuggest($item, $owner);
q("DELETE FROM `fsuggest` WHERE `id` = %d LIMIT 1", intval($item['id']));
} elseif ($relocate)
$atom = Dfrn::relocate($owner, $uid);
[...]
```
This is real "include/delivery.php" unchanged, but as the code is declared to be in "Friendica" namespace, you don't need to write it when you need to use the "dfrn" class.
This is the current code of `include/delivery.php`, and since the code is declared to be in the "Friendica" namespace, you don't need to write it when you need to use the "Dfrn" class.
But if you want to use classes from another library, you need to use the full namespace, e.g.
```
<?php
namespace \Friendica;
```php
// src/Diaspora.php
<?php
class Diaspora {
public function md2bbcode() {
$html = \Michelf\MarkdownExtra::defaultTransform($text);
}
}
namespace \Friendica;
class Diaspora {
public function md2bbcode() {
$html = \Michelf\MarkdownExtra::defaultTransform($text);
}
}
```
if you use that class in many places of the code and you don't want to write the full path to the class everytime, you can use the "use" php keyword
if you use that class in many places of the code and you don't want to write the full path to the class every time, you can use the "use" PHP keyword
```
<?php
namespace \Friendica;
```php
// src/Diaspora.php
<?php
namespace \Friendica;
use \Michelf\MarkdownExtra;
use \Michelf\MarkdownExtra;
class Diaspora {
public function md2bbcode() {
$html = MarkdownExtra::defaultTransform($text);
}
}
class Diaspora {
public function md2bbcode() {
$html = MarkdownExtra::defaultTransform($text);
}
}
```
Note that namespaces are like paths in filesystem, separated by "\", with the first "\" being the global scope.
You can go more deep if you want to, like:
You can go deeper if you want to, like:
```
// src/Network/Dfrn.php
<?php
namespace \Friendica\Network;
class DFRN {
class Dfrn {
}
```
Please note that the location of the file defining the class must be placed in the appropriate sub-folders of `src` if the namespace isn't plain `\Friendica`.
or
```
// src/Dba/Mysql
<?php
namespace \Friendica\DBA;
namespace \Friendica\Dba;
class MySQL {
class Mysql {
}
```
So you can think of namespaces as folders in a unix filesystem, with global scope as the root ("\").
So you can think of namespaces as folders in a Unix file system, with global scope as the root ("\").

4
doc/de/Home.md
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@ -24,7 +24,7 @@ Friendica - Dokumentation und Ressourcen
* [Account löschen](help/Remove-Account)
* [Bugs und Probleme](help/Bugs-and-Issues)
* [Häufig gestellte Fragen (FAQ)](help/FAQ)
**Dokumentation für Administratoren**
* [Installation](help/Install)
@ -49,6 +49,8 @@ Friendica - Dokumentation und Ressourcen
* [Smarty 3 Templates](help/smarty3-templates)
* [Protokoll Dokumentation](help/Protocol) (EN)
* [Datenbank-Schema](help/database)
* [Class Autoloading](help/autoloader) (EN)
* [Using Composer](help/Composer) (EN)
* [Code-Referenz (mit doxygen generiert - setzt Cookies)](doc/html/)
* [Twitter/GNU Social API Functions](help/api) (EN)

3
doc/de/Install.md
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@ -26,7 +26,6 @@ Wir planen, diese Einschränkung in einer zukünftigen Version zu beheben.
- PHP *Kommandozeilen*-Zugang mit register_argc_argv auf "true" gesetzt in der php.ini-Datei
- curl, gd, mysql und openssl-Erweiterung
- etwas in der Art eines Email-Servers oder eines Gateways wie PHP mail()
- mcrypt (optional; wird für die Server-zu-Server Nachrichtenentschlüsselung benötigt)
- Mysql 5.x
- die Möglichkeit, wiederkehrende Aufgaben mit cron (Linux/Mac) oder "Scheduled Tasks" einzustellen (Windows) [Beachte: andere Optionen sind in Abschnitt 7 dieser Dokumentation zu finden]
- Installation in einer Top-Level-Domain oder Subdomain (ohne eine Verzeichnis/Pfad-Komponente in der URL) wird bevorzugt. Verzeichnispfade sind für diesen Zweck nicht so günstig und wurden auch nicht ausführlich getestet.
@ -37,7 +36,7 @@ Wir planen, diese Einschränkung in einer zukünftigen Version zu beheben.
1.1. APT-Pakete
- Apache: sudo apt-get install apache2
- PHP5: sudo apt-get install php5
- PHP5-Zusätzliche Pakete: sudo apt-get install php5-curl php5-gd php5-mysql php5-mcrypt
- PHP5-Zusätzliche Pakete: sudo apt-get install php5-curl php5-gd php5-mysql
- MySQL: sudo apt-get install mysql-server
2. Entpacke die Friendica-Daten in das Quellverzeichnis (root) des Dokumentenbereichs deines Webservers.

5
htconfig.php
View file

@ -65,9 +65,8 @@ $a->config['php_path'] = 'php';
$a->config['system']['huburl'] = '[internal]';
// Server-to-server private message encryption (RINO) is allowed by default.
// Encryption will only be provided if this setting is set to a non zero
// value and the PHP mcrypt extension is installed on both systems
// set to 0 to disable, 2 to enable, 1 is deprecated but wont need mcrypt
// Encryption will only be provided if this setting is set to a non zero value
// set to 0 to disable, 2 to enable, 1 is deprecated
$a->config['system']['rino_encrypt'] = 2;

66
include/Probe.php
View file

@ -888,33 +888,36 @@ class Probe {
* @return array OStatus data
*/
private function ostatus($webfinger) {
$data = array();
if (is_array($webfinger["aliases"]))
foreach($webfinger["aliases"] AS $alias)
if (strstr($alias, "@"))
if (is_array($webfinger["aliases"])) {
foreach ($webfinger["aliases"] AS $alias) {
if (strstr($alias, "@")) {
$data["addr"] = str_replace('acct:', '', $alias);
}
}
}
if (is_string($webfinger["subject"]) AND strstr($webfinger["subject"], "@"))
if (is_string($webfinger["subject"]) AND strstr($webfinger["subject"], "@")) {
$data["addr"] = str_replace('acct:', '', $webfinger["subject"]);
}
$pubkey = "";
foreach ($webfinger["links"] AS $link) {
if (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
($link["type"] == "text/html") AND ($link["href"] != ""))
($link["type"] == "text/html") AND ($link["href"] != "")) {
$data["url"] = $link["href"];
elseif (($link["rel"] == "salmon") AND ($link["href"] != ""))
} elseif (($link["rel"] == "salmon") AND ($link["href"] != "")) {
$data["notify"] = $link["href"];
elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != ""))
} elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != "")) {
$data["poll"] = $link["href"];
elseif (($link["rel"] == "magic-public-key") AND ($link["href"] != "")) {
} elseif (($link["rel"] == "magic-public-key") AND ($link["href"] != "")) {
$pubkey = $link["href"];
if (substr($pubkey, 0, 5) === 'data:') {
if (strstr($pubkey, ','))
if (strstr($pubkey, ',')) {
$pubkey = substr($pubkey, strpos($pubkey, ',') + 1);
else
} else {
$pubkey = substr($pubkey, 5);
}
} elseif (normalise_link($pubkey) == 'http://') {
$ret = z_fetch_url($pubkey);
if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
@ -930,16 +933,15 @@ class Probe {
$e = base64url_decode($key[2]);
$data["pubkey"] = metopem($m,$e);
}
}
}
if (isset($data["notify"]) AND isset($data["pubkey"]) AND
isset($data["poll"]) AND isset($data["url"])) {
$data["network"] = NETWORK_OSTATUS;
} else
} else {
return false;
}
// Fetch all additional data from the feed
$ret = z_fetch_url($data["poll"]);
if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
@ -947,32 +949,32 @@ class Probe {
}
$feed = $ret['body'];
$feed_data = feed_import($feed,$dummy1,$dummy2, $dummy3, true);
if (!$feed_data)
if (!$feed_data) {
return false;
if ($feed_data["header"]["author-name"] != "")
}
if ($feed_data["header"]["author-name"] != "") {
$data["name"] = $feed_data["header"]["author-name"];
if ($feed_data["header"]["author-nick"] != "")
}
if ($feed_data["header"]["author-nick"] != "") {
$data["nick"] = $feed_data["header"]["author-nick"];
if ($feed_data["header"]["author-avatar"] != "")
$data["photo"] = $feed_data["header"]["author-avatar"];
if ($feed_data["header"]["author-id"] != "")
}
if ($feed_data["header"]["author-avatar"] != "") {
$data["photo"] = ostatus::fix_avatar($feed_data["header"]["author-avatar"], $data["url"]);
}
if ($feed_data["header"]["author-id"] != "") {
$data["alias"] = $feed_data["header"]["author-id"];
if ($feed_data["header"]["author-location"] != "")
}
if ($feed_data["header"]["author-location"] != "") {
$data["location"] = $feed_data["header"]["author-location"];
if ($feed_data["header"]["author-about"] != "")
}
if ($feed_data["header"]["author-about"] != "") {
$data["about"] = $feed_data["header"]["author-about"];
}
// OStatus has serious issues when the the url doesn't fit (ssl vs. non ssl)
// So we take the value that we just fetched, although the other one worked as well
if ($feed_data["header"]["author-link"] != "")
if ($feed_data["header"]["author-link"] != "") {
$data["url"] = $feed_data["header"]["author-link"];
}
/// @todo Fetch location and "about" from the feed as well
return $data;
}

69
include/autoloader.php
View file

@ -1,69 +0,0 @@
<?php
/**
* @file include/autoloader.php
*/
/**
* @brief composer-derived autoloader init
**/
class FriendicaAutoloaderInit
{
private static $loader;
public static function loadClassLoader($class)
{
if ('Composer\Autoload\ClassLoader' === $class) {
require __DIR__ . '/autoloader/ClassLoader.php';
}
}
public static function getLoader()
{
if (null !== self::$loader) {
return self::$loader;
}
spl_autoload_register(array('FriendicaAutoloaderInit', 'loadClassLoader'), true, true);
self::$loader = $loader = new \Composer\Autoload\ClassLoader();
spl_autoload_unregister(array('FriendicaAutoloaderInit', 'loadClassLoader'));
// library
$map = require __DIR__ . '/autoloader/autoload_namespaces.php';
foreach ($map as $namespace => $path) {
$loader->set($namespace, $path);
}
$map = require __DIR__ . '/autoloader/autoload_psr4.php';
foreach ($map as $namespace => $path) {
$loader->setPsr4($namespace, $path);
}
$classMap = require __DIR__ . '/autoloader/autoload_classmap.php';
if ($classMap) {
$loader->addClassMap($classMap);
}
$loader->register(true);
$includeFiles = require __DIR__ . '/autoloader/autoload_files.php';
foreach ($includeFiles as $fileIdentifier => $file) {
friendicaRequire($fileIdentifier, $file);
}
return $loader;
}
}
function friendicaRequire($fileIdentifier, $file)
{
if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
require $file;
$GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
}
}
return FriendicaAutoloaderInit::getLoader();

9
include/autoloader/autoload_classmap.php
View file

@ -1,9 +0,0 @@
<?php
// autoload_classmap.php @generated by Composer
$vendorDir = dirname(dirname(dirname(__FILE__)))."/library";
$baseDir = dirname($vendorDir);
return array(
);

10
include/autoloader/autoload_psr4.php
View file

@ -1,10 +0,0 @@
<?php
// autoload_psr4.php @generated by Composer
$vendorDir = dirname(dirname(dirname(__FILE__)))."/library";
$baseDir = dirname($vendorDir);
return array(
'Friendica\\' => array($baseDir . '/include'),
);

11
include/contact_selectors.php
View file

@ -88,7 +88,7 @@ function network_to_name($s, $profile = "") {
NETWORK_PUMPIO => t('pump.io'),
NETWORK_TWITTER => t('Twitter'),
NETWORK_DIASPORA2 => t('Diaspora Connector'),
NETWORK_STATUSNET => t('GNU Social'),
NETWORK_STATUSNET => t('GNU Social Connector'),
NETWORK_PNUT => t('pnut'),
NETWORK_APPNET => t('App.net')
);
@ -98,17 +98,16 @@ function network_to_name($s, $profile = "") {
$search = array_keys($nets);
$replace = array_values($nets);
$networkname = str_replace($search,$replace,$s);
if (($s == NETWORK_DIASPORA) AND ($profile != "") AND Diaspora::is_redmatrix($profile)) {
$networkname = t("Hubzilla/Redmatrix");
$networkname = str_replace($search, $replace, $s);
if ((in_array($s, array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS))) AND ($profile != "")) {
$r = q("SELECT `gserver`.`platform` FROM `gcontact`
INNER JOIN `gserver` ON `gserver`.`nurl` = `gcontact`.`server_url`
WHERE `gcontact`.`nurl` = '%s' AND `platform` != ''",
dbesc(normalise_link($profile)));
if ($r)
if (dbm::is_result($r)) {
$networkname = $r[0]["platform"];
}
}
return $networkname;

209
include/crypto.php
View file

@ -1,94 +1,52 @@
<?php
require_once('library/ASNValue.class.php');
require_once('library/asn1.php');
require_once 'library/ASNValue.class.php';
require_once 'library/asn1.php';
// supported algorithms are 'sha256', 'sha1'
function rsa_sign($data,$key,$alg = 'sha256') {
$sig = '';
if (version_compare(PHP_VERSION, '5.3.0', '>=') || $alg === 'sha1') {
openssl_sign($data,$sig,$key,(($alg == 'sha1') ? OPENSSL_ALGO_SHA1 : $alg));
}
else {
if(strlen($key) < 1024 || extension_loaded('gmp')) {
require_once('library/phpsec/Crypt/RSA.php');
$rsa = new CRYPT_RSA();
$rsa->signatureMode = CRYPT_RSA_SIGNATURE_PKCS1;
$rsa->setHash($alg);
$rsa->loadKey($key);
$sig = $rsa->sign($data);
}
else {
logger('rsa_sign: insecure algorithm used. Please upgrade PHP to 5.3');
openssl_private_encrypt(hex2bin('3031300d060960864801650304020105000420') . hash('sha256',$data,true), $sig, $key);
}
}
function rsa_sign($data, $key, $alg = 'sha256') {
openssl_sign($data, $sig, $key, (($alg == 'sha1') ? OPENSSL_ALGO_SHA1 : $alg));
return $sig;
}
function rsa_verify($data,$sig,$key,$alg = 'sha256') {
if (version_compare(PHP_VERSION, '5.3.0', '>=') || $alg === 'sha1') {
$verify = openssl_verify($data,$sig,$key,(($alg == 'sha1') ? OPENSSL_ALGO_SHA1 : $alg));
}
else {
if(strlen($key) <= 300 || extension_loaded('gmp')) {
require_once('library/phpsec/Crypt/RSA.php');
$rsa = new CRYPT_RSA();
$rsa->signatureMode = CRYPT_RSA_SIGNATURE_PKCS1;
$rsa->setHash($alg);
$rsa->loadKey($key);
$verify = $rsa->verify($data,$sig);
}
else {
// fallback sha256 verify for PHP < 5.3 and large key lengths
$rawsig = '';
openssl_public_decrypt($sig,$rawsig,$key);
$verify = (($rawsig && substr($rawsig,-32) === hash('sha256',$data,true)) ? true : false);
}
}
return $verify;
function rsa_verify($data, $sig, $key, $alg = 'sha256') {
return openssl_verify($data, $sig, $key, (($alg == 'sha1') ? OPENSSL_ALGO_SHA1 : $alg));
}
function DerToPem($Der, $Private = false) {
//Encode:
$Der = base64_encode($Der);
//Split lines:
$lines = str_split($Der, 65);
$body = implode("\n", $lines);
//Get title:
$title = $Private ? 'RSA PRIVATE KEY' : 'PUBLIC KEY';
//Add wrapping:
$result = "-----BEGIN {$title}-----\n";
$result .= $body . "\n";
$result .= "-----END {$title}-----\n";
function DerToPem($Der, $Private=false)
{
//Encode:
$Der = base64_encode($Der);
//Split lines:
$lines = str_split($Der, 65);
$body = implode("\n", $lines);
//Get title:
$title = $Private? 'RSA PRIVATE KEY' : 'PUBLIC KEY';
//Add wrapping:
$result = "-----BEGIN {$title}-----\n";
$result .= $body . "\n";
$result .= "-----END {$title}-----\n";
return $result;
return $result;
}
function DerToRsa($Der)
{
//Encode:
$Der = base64_encode($Der);
//Split lines:
$lines = str_split($Der, 64);
$body = implode("\n", $lines);
//Get title:
$title = 'RSA PUBLIC KEY';
//Add wrapping:
$result = "-----BEGIN {$title}-----\n";
$result .= $body . "\n";
$result .= "-----END {$title}-----\n";
return $result;
function DerToRsa($Der) {
//Encode:
$Der = base64_encode($Der);
//Split lines:
$lines = str_split($Der, 64);
$body = implode("\n", $lines);
//Get title:
$title = 'RSA PUBLIC KEY';
//Add wrapping:
$result = "-----BEGIN {$title}-----\n";
$result .= $body . "\n";
$result .= "-----END {$title}-----\n";
return $result;
}
function pkcs8_encode($Modulus,$PublicExponent) {
function pkcs8_encode($Modulus, $PublicExponent) {
//Encode key sequence
$modulus = new ASNValue(ASNValue::TAG_INTEGER);
$modulus->SetIntBuffer($Modulus);
@ -111,8 +69,7 @@ function pkcs8_encode($Modulus,$PublicExponent) {
return $PublicDER;
}
function pkcs1_encode($Modulus,$PublicExponent) {
function pkcs1_encode($Modulus, $PublicExponent) {
//Encode key sequence
$modulus = new ASNValue(ASNValue::TAG_INTEGER);
$modulus->SetIntBuffer($Modulus);
@ -126,22 +83,20 @@ function pkcs1_encode($Modulus,$PublicExponent) {
return $bitStringValue;
}
function metopem($m,$e) {
$der = pkcs8_encode($m,$e);
$key = DerToPem($der,false);
function metopem($m, $e) {
$der = pkcs8_encode($m, $e);
$key = DerToPem($der, false);
return $key;
}
}
function pubrsatome($key,&$m,&$e) {
require_once('library/asn1.php');
require_once('include/salmon.php');
$lines = explode("\n",$key);
$lines = explode("\n", $key);
unset($lines[0]);
unset($lines[count($lines)]);
$x = base64_decode(implode('',$lines));
$x = base64_decode(implode('', $lines));
$r = ASN_BASE::parseASNString($x);
@ -151,21 +106,21 @@ function pubrsatome($key,&$m,&$e) {
function rsatopem($key) {
pubrsatome($key,$m,$e);
return(metopem($m,$e));
pubrsatome($key, $m, $e);
return metopem($m, $e);
}
function pemtorsa($key) {
pemtome($key,$m,$e);
return(metorsa($m,$e));
pemtome($key, $m, $e);
return metorsa($m, $e);
}
function pemtome($key,&$m,&$e) {
function pemtome($key, &$m, &$e) {
require_once('include/salmon.php');
$lines = explode("\n",$key);
$lines = explode("\n", $key);
unset($lines[0]);
unset($lines[count($lines)]);
$x = base64_decode(implode('',$lines));
$x = base64_decode(implode('', $lines));
$r = ASN_BASE::parseASNString($x);
@ -173,82 +128,36 @@ function pemtome($key,&$m,&$e) {
$e = base64url_decode($r[0]->asnData[1]->asnData[0]->asnData[1]->asnData);
}
function metorsa($m,$e) {
$der = pkcs1_encode($m,$e);
function metorsa($m, $e) {
$der = pkcs1_encode($m, $e);
$key = DerToRsa($der);
return $key;
}
}
function salmon_key($pubkey) {
pemtome($pubkey,$m,$e);
return 'RSA' . '.' . base64url_encode($m,true) . '.' . base64url_encode($e,true) ;
pemtome($pubkey, $m, $e);
return 'RSA' . '.' . base64url_encode($m, true) . '.' . base64url_encode($e, true) ;
}
if(! function_exists('aes_decrypt')) {
// DEPRECATED IN 3.4.1
function aes_decrypt($val,$ky)
{
$key="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
for($a=0;$a<strlen($ky);$a++)
$key[$a%16]=chr(ord($key[$a%16]) ^ ord($ky[$a]));
$mode = MCRYPT_MODE_ECB;
$enc = MCRYPT_RIJNDAEL_128;
$dec = @mcrypt_decrypt($enc, $key, $val, $mode, @mcrypt_create_iv( @mcrypt_get_iv_size($enc, $mode), MCRYPT_DEV_URANDOM ) );
return rtrim($dec,(( ord(substr($dec,strlen($dec)-1,1))>=0 and ord(substr($dec, strlen($dec)-1,1))<=16)? chr(ord( substr($dec,strlen($dec)-1,1))):null));
}}
if(! function_exists('aes_encrypt')) {
// DEPRECATED IN 3.4.1
function aes_encrypt($val,$ky)
{
$key="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
for($a=0;$a<strlen($ky);$a++)
$key[$a%16]=chr(ord($key[$a%16]) ^ ord($ky[$a]));
$mode=MCRYPT_MODE_ECB;
$enc=MCRYPT_RIJNDAEL_128;
$val=str_pad($val, (16*(floor(strlen($val) / 16)+(strlen($val) % 16==0?2:1))), chr(16-(strlen($val) % 16)));
return mcrypt_encrypt($enc, $key, $val, $mode, mcrypt_create_iv( mcrypt_get_iv_size($enc, $mode), MCRYPT_DEV_URANDOM));
}}
function pkcs5_pad ($text, $blocksize)
{
$pad = $blocksize - (strlen($text) % $blocksize);
return $text . str_repeat(chr($pad), $pad);
}
function pkcs5_unpad($text)
{
$pad = ord($text{strlen($text)-1});
if ($pad > strlen($text)) return false;
if (strspn($text, chr($pad), strlen($text) - $pad) != $pad) return false;
return substr($text, 0, -1 * $pad);
}
function new_keypair($bits) {
$openssl_options = array(
'digest_alg' => 'sha1',
'private_key_bits' => $bits,
'encrypt_key' => false
'encrypt_key' => false
);
$conf = get_config('system','openssl_conf_file');
if($conf)
$conf = get_config('system', 'openssl_conf_file');
if ($conf) {
$openssl_options['config'] = $conf;
}
$result = openssl_pkey_new($openssl_options);
if(empty($result)) {
if (empty($result)) {
logger('new_keypair: failed');
return false;
}
// Get private key
$response = array('prvkey' => '', 'pubkey' => '');
openssl_pkey_export($result, $response['prvkey']);
@ -258,6 +167,4 @@ function new_keypair($bits) {
$response['pubkey'] = $pkey["key"];
return $response;
}

30
include/dfrn.php
View file

@ -864,6 +864,30 @@ class dfrn {
return $entry;
}
/**
* @brief encrypts data via AES
*
* @param string $data The data that is to be encrypted
* @param string $key The AES key
*
* @return string encrypted data
*/
private static function aes_encrypt($data, $key) {
return openssl_encrypt($data, 'aes-128-ecb', $key, OPENSSL_RAW_DATA);
}
/**
* @brief decrypts data via AES
*
* @param string $encrypted The encrypted data
* @param string $key The AES key
*
* @return string decrypted data
*/
public static function aes_decrypt($encrypted, $key) {
return openssl_decrypt($encrypted, 'aes-128-ecb', $key, OPENSSL_RAW_DATA);
}
/**
* @brief Delivers the atom content to the contacts
*
@ -888,8 +912,6 @@ class dfrn {
$rino = get_config('system','rino_encrypt');
$rino = intval($rino);
// use RINO1 if mcrypt isn't installed and RINO2 was selected
if ($rino==2 and !function_exists('mcrypt_create_iv')) $rino=1;
logger("Local rino version: ". $rino, LOGGER_DEBUG);
@ -1015,8 +1037,8 @@ class dfrn {
switch($rino_remote_version) {
case 1:
// Deprecated rino version!
$key = substr(random_string(),0,16);
$data = aes_encrypt($postvars['data'],$key);
$key = openssl_random_pseudo_bytes(16);
$data = self::aes_encrypt($postvars['data'], $key);
break;
case 2:
// RINO 2 based on php-encryption

8
include/diaspora.php
View file

@ -2640,14 +2640,14 @@ class Diaspora {
return false;
}
$inner_aes_key = random_string(32);
$inner_aes_key = openssl_random_pseudo_bytes(32);
$b_inner_aes_key = base64_encode($inner_aes_key);
$inner_iv = random_string(16);
$inner_iv = openssl_random_pseudo_bytes(16);
$b_inner_iv = base64_encode($inner_iv);
$outer_aes_key = random_string(32);
$outer_aes_key = openssl_random_pseudo_bytes(32);
$b_outer_aes_key = base64_encode($outer_aes_key);
$outer_iv = random_string(16);
$outer_iv = openssl_random_pseudo_bytes(16);
$b_outer_iv = base64_encode($outer_iv);
$handle = self::my_handle($user);

57
include/ostatus.php
View file

@ -27,6 +27,42 @@ class ostatus {
const OSTATUS_DEFAULT_POLL_TIMEFRAME = 1440; // given in minutes
const OSTATUS_DEFAULT_POLL_TIMEFRAME_MENTIONS = 14400; // given in minutes
/**
* @brief Mix two paths together to possibly fix missing parts
*
* @param string $avatar Path to the avatar
* @param string $base Another path that is hopefully complete
*
* @return string fixed avatar path
*/
public static function fix_avatar($avatar, $base) {
$base_parts = parse_url($base);
// Remove all parts that could create a problem
unset($base_parts['path']);
unset($base_parts['query']);
unset($base_parts['fragment']);
$avatar_parts = parse_url($avatar);
// Now we mix them
$parts = array_merge($base_parts, $avatar_parts);
// And put them together again
$scheme = isset($parts['scheme']) ? $parts['scheme'] . '://' : '';
$host = isset($parts['host']) ? $parts['host'] : '';
$port = isset($parts['port']) ? ':' . $parts['port'] : '';
$path = isset($parts['path']) ? $parts['path'] : '';
$query = isset($parts['query']) ? '?' . $parts['query'] : '';
$fragment = isset($parts['fragment']) ? '#' . $parts['fragment'] : '';
$fixed = $scheme.$host.$port.$path.$query.$fragment;
logger('Base: '.$base.' - Avatar: '.$avatar.' - Fixed: '.$fixed, LOGGER_DATA);
return $fixed;
}
/**
* @brief Fetches author data
*
@ -77,7 +113,7 @@ class ostatus {
}
if (count($avatarlist) > 0) {
krsort($avatarlist);
$author["author-avatar"] = current($avatarlist);
$author["author-avatar"] = self::fix_avatar(current($avatarlist), $author["author-link"]);
}
$displayname = $xpath->evaluate('atom:author/poco:displayName/text()', $context)->item(0)->nodeValue;
@ -500,12 +536,16 @@ class ostatus {
$item["author-name"] = $orig_author["author-name"];
$item["author-link"] = $orig_author["author-link"];
$item["author-avatar"] = $orig_author["author-avatar"];
$item["body"] = add_page_info_to_body(html2bbcode($orig_body));
$item["created"] = $orig_created;
$item["edited"] = $orig_edited;
$item["uri"] = $orig_uri;
$item["plink"] = $orig_link;
if (!isset($item["plink"])) {
$item["plink"] = $orig_link;
}
$item["verb"] = $xpath->query('activity:verb/text()', $activityobjects)->item(0)->nodeValue;
@ -1068,10 +1108,11 @@ class ostatus {
$arr["owner-name"] = $single_conv->actor->portablecontacts_net->displayName;
$arr["owner-link"] = $actor;
$arr["owner-avatar"] = $single_conv->actor->image->url;
$arr["owner-avatar"] = self::fix_avatar($single_conv->actor->image->url, $arr["owner-link"]);
$arr["author-name"] = $arr["owner-name"];
$arr["author-link"] = $actor;
$arr["author-avatar"] = $single_conv->actor->image->url;
$arr["author-link"] = $arr["owner-link"];
$arr["author-avatar"] = $arr["owner-avatar"];
$arr["body"] = add_page_info_to_body(html2bbcode($single_conv->content));
if (isset($single_conv->status_net->notice_info->source))
@ -1122,11 +1163,11 @@ class ostatus {
$arr["edited"] = $single_conv->object->published;
$arr["author-name"] = $single_conv->object->actor->displayName;
if ($arr["owner-name"] == '')
if ($arr["owner-name"] == '') {
$arr["author-name"] = $single_conv->object->actor->contact->displayName;
}
$arr["author-link"] = $single_conv->object->actor->url;
$arr["author-avatar"] = $single_conv->object->actor->image->url;
$arr["author-avatar"] = self::fix_avatar($single_conv->object->actor->image->url, $arr["author-link"]);
$arr["app"] = $single_conv->object->provider->displayName."#";
//$arr["verb"] = $single_conv->object->verb;

12
include/user.php
View file

@ -175,17 +175,7 @@ function create_user($arr) {
$prvkey = $keys['prvkey'];
$pubkey = $keys['pubkey'];
/**
*
* Create another keypair for signing/verifying
* salmon protocol messages. We have to use a slightly
* less robust key because this won't be using openssl
* but the phpseclib. Since it is PHP interpreted code
* it is not nearly as efficient, and the larger keys
* will take several minutes each to process.
*
*/
// Create another keypair for signing/verifying salmon protocol messages.
$sres = new_keypair(512);
$sprvkey = $sres['prvkey'];
$spubkey = $sres['pubkey'];

11
library/Mobile_Detect/.gitignore vendored
View file

@ -1,11 +0,0 @@
vendor/
nbproject/
/*.buildpath
/*.project
/.settings
/error.log
/export/nicejson
.idea/
*.iml
/coverage
/phpunit.phar

3
library/Mobile_Detect/.gitmodules vendored
View file

@ -1,3 +0,0 @@
[submodule "export/nicejson"]
path = export/nicejson
url = https://github.com/GerHobbelt/nicejson-php.git

24
library/Mobile_Detect/.php_cs
View file

@ -1,24 +0,0 @@
<?php
use Symfony\CS\FixerInterface;
$finder = Symfony\CS\Finder\DefaultFinder::create()
->notName('LICENSE')
->notName('README.md')
->notName('.php_cs')
->notName('composer.*')
->notName('phpunit.xml*')
->notName('*.phar')
->exclude('vendor')
->exclude('examples')
->exclude('Symfony/CS/Tests/Fixer')
->notName('ElseifFixer.php')
->exclude('data')
->in(__DIR__)
;
return Symfony\CS\Config\Config::create()
->finder($finder)
;

17
library/Mobile_Detect/.travis.yml
View file

@ -1,17 +0,0 @@
language: php
php:
- "5.2"
- "5.3"
- "5.4"
- "5.5"
- "5.6"
branches:
only:
- devel
script:
- phpunit -v -c tests/phpunit.xml
notifications:
email: false

1
library/Mobile_Detect/Mobile_Detect.json
View file

File diff suppressed because one or more lines are too long

219
library/Mobile_Detect/README.md
View file

@ -1,219 +0,0 @@
[![Build Status](https://travis-ci.org/serbanghita/Mobile-Detect.svg?branch=devel)](https://travis-ci.org/serbanghita/Mobile-Detect) [![Latest Stable Version](https://poser.pugx.org/mobiledetect/mobiledetectlib/v/stable.svg)](https://packagist.org/packages/mobiledetect/mobiledetectlib) [![Total Downloads](https://poser.pugx.org/mobiledetect/mobiledetectlib/downloads.svg)](https://packagist.org/packages/mobiledetect/mobiledetectlib) [![Daily Downloads](https://poser.pugx.org/mobiledetect/mobiledetectlib/d/daily.png)](https://packagist.org/packages/mobiledetect/mobiledetectlib) [![License](https://poser.pugx.org/mobiledetect/mobiledetectlib/license.svg)](https://packagist.org/packages/mobiledetect/mobiledetectlib)
[![Gitter](https://badges.gitter.im/Join Chat.svg)](https://gitter.im/serbanghita/Mobile-Detect?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
![Mobile Detect](http://demo.mobiledetect.net/logo-github.png)
> Motto: "Every business should have a mobile detection script to detect mobile readers."
<i>Mobile_Detect is a lightweight PHP class for detecting mobile devices (including tablets).
It uses the User-Agent string combined with specific HTTP headers to detect the mobile environment.</i>
> We're commited to make Mobile_Detect the best open-source mobile detection resource and this is why before each release we're running [unit tests](./tests), we also research and update the detection rules on <b>daily</b> and <b>weekly</b> basis.
Your website's _content strategy_ is important! You need a complete toolkit to deliver an experience that is _optimized_, _fast_ and _relevant_ to your users. Mobile_Detect class is a [server-side detection](http://www.w3.org/TR/mwabp/#bp-devcap-detection) tool that can help you with your RWD strategy, it is not a replacement for CSS3 media queries or other forms of client-side feature detection.
##### This month updates
First of all a **BIG THANK YOU** to our growing community for your continuous support and for all the feedback received! I'm still working my way with the current issues and all the emails.
Nick is almost done with all the code for the upcoming `3.0.0` so that I only have to integrate the new parsing engine. We will release minor `2.8.xx` versions until a feature freeze where we will switch to the new branch. You will all be announced before this and hopefully we can make the transition smooth for everyone.
<a href="http://trycatch.us/"><img align="left" src="http://assets.mobiledetect.net/img/try_catch_logo_80px.jpg" hspace="20"></a> Last but not least, special thanks for supporting us to our friends from [TryCatch.us](http://trycatch.us/) who _are set to carefully curate the most talented developers in Europe_!
Thank you all and we're excited for the new release!
##### Download and demo
|Download|Docs|Examples|
|-------------|-------------|-------------|
|[Go to releases](../../tags)|[Become a contributor](../../wiki/Become-a-contributor)|[Code examples](../../wiki/Code-examples)
|[Mobile_Detect.php](./Mobile_Detect.php)|[History](../../wiki/History)|[:iphone: Live demo!](http://is.gd/mobiletest)
|[Composer package](https://packagist.org/packages/mobiledetect/mobiledetectlib)|
##### Help
|Pledgie|Paypal|
|-------|------|
|[Donate :+1:](http://pledgie.com/campaigns/21856)|[Donate :beer:](https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=mobiledetectlib%40gmail%2ecom&lc=US&item_name=Mobile%20Detect&currency_code=USD&bn=PP%2dDonationsBF%3abtn_donate_SM%2egif%3aNonHosted)|
I'm currently paying for hosting and spend a lot of my family time to maintain the project and planning the future releases.
I would highly appreciate any money donations that will keep the research going.
Special thanks to the community :+1: for donations, [BrowserStack](http://browserstack.com) - for providing access to their great platform, [Zend](http://zend.com) - for donating licenses, [Dragos Gavrila](https://twitter.com/grafician) who contributed with the logo.
##### 3rd party modules / [Submit new](../../issues/new?title=New%203rd%20party%20module&body=Name, Link and Description of the module.)
:point_right: Keep `Mobile_Detect.php` class in a separate `module` and do NOT include it in your script core because of the high frequency of updates.
:point_right: When including the class into you `web application` or `module` always use `include_once '../path/to/Mobile_Detect.php` to prevent conflicts.
<table>
<tr>
<td>Varnish Cache</td>
<td>
<p><a href="https://github.com/willemk/varnish-mobiletranslate">Varnish Mobile Detect</a> - Drop-in varnish solution to mobile user detection based on the Mobile-Detect library. Made by <a href="https://github.com/willemk">willemk</a></p>
<p><a href="https://github.com/carlosabalde/mobiledetect2vcl">mobiledetect2vcl</a> - Python script to transform the Mobile Detect JSON database into an UA-based mobile detection VCL subroutine easily integrable in any Varnish Cache configuration. Made by <a href="https://github.com/carlosabalde">Carlos Abalde</a></p>
</td>
</tr>
<tr>
<td>WordPress</td>
<td>
<p><a href="http://wordpress.org/extend/plugins/wp-mobile-detect/">WordPress Mobile Detect</a> - Gives you the ability to wrap that infographic in a `[notdevice][/notdevice]` shortcode so at the server level <code>WordPress</code> will decide to show that content only if the user is NOT on a phone or tablet. Made by <a href="http://profiles.wordpress.org/professor44/">Jesse Friedman</a>.</p>
<p><a href="http://wordpress.org/plugins/mobble/">mobble</a> - provides mobile related conditional functions for your site. e.g. is_iphone(), is_mobile() and is_tablet(). Made by Scott Evans.</p>
<p><a href="https://github.com/iamspacehead/responsage">WordPress Responsage</a> - A small <code>WordPress</code> theme plugin that allows you to make your images responsive. Made by <a href="https://github.com/iamspacehead">Adrian Ciaschetti</a>.</p>
<p><a href="http://wordpress.org/plugins/social-popup/">Social PopUP</a> - This plugin will display a popup or splash screen when a new user visit your site showing a Google+, Twitter and Facebook follow links. It uses Mobile_Detect to detect mobile devices.</p>
</td>
</tr>
<tr>
<td>Drupal</td>
<td>
<p><a href="http://drupal.org/project/mobile_switch">Drupal Mobile Switch</a> - The Mobile Switch <code>Drupal</code> module provides a automatic theme switch functionality for mobile devices,
detected by Browscap or Mobile Detect. Made by <a href="http://drupal.org/user/45267">Siegfried Neumann</a>.</p>
<p><a href="http://drupal.org/project/context_mobile_detect">Drupal Context Mobile Detect</a> - This is a <code>Drupal context</code> module which integrates Context and PHP Mobile Detect library.
Created by <a href="http://drupal.org/user/432492">Artem Shymko</a>.</p>
<p><a href="http://drupal.org/project/mobile_detect">Drupal Mobile Detect</a> - Lightweight mobile detect module for <code>Drupal</code> created by <a href="http://drupal.org/user/325244">Matthew Donadio</a></p>
</td>
</tr>
<tr>
<td>Joomla</td>
<td><p><a href="http://www.yagendoo.com/en/blog/free-mobile-detection-plugin-for-joomla.html">yagendoo Joomla! Mobile Detection Plugin</a> - Lightweight PHP plugin for Joomla! that detects a mobile browser using the Mobile Detect class. Made by <a href="http://www.yagendoo.com/">yagendoo media</a>.</p></td>
</tr>
<tr>
<td>Magento</td>
<td><p><a href="http://www.magentocommerce.com/magento-connect/catalog/product/view/id/16835/">Magento</a> - This <code>Magento helper</code> from Optimise Web enables the use of all functions provided by MobileDetect.net.
Made by <a href="http://www.kathirvel.com">Kathir Vel</a>.</p></td>
</tr>
<tr>
<td>PrestaShop</td>
<td><p><a href="http://www.prestashop.com/">PrestaShop</a> is a free, secure and open source shopping cart platform. Mobile_Detect is included in the default package since 1.5.x.</p></td>
</tr>
<tr>
<td>Zend Framework</td>
<td>
<p><a href="https://github.com/neilime/zf2-mobile-detect.git">ZF2 Mobile-Detect</a> - Zend Framework 2 module that provides Mobile-Detect features (Mobile_Detect class as a service, helper for views and plugin controllers). Made by <a href="https://github.com/neilime">neilime</a></p>
<p><a href="https://github.com/nikolaposa/MobileDetectModule">ZF2 MobileDetectModule</a> - Facilitates integration of a PHP MobileDetect class with some ZF2-based application. Has similar idea like the existing ZF2 Mobile-Detect module, but differs in initialization and provision routine of the actual Mobile_Detect class. Appropriate view helper and controller plugin also have different conceptions. Made by <a href="https://github.com/nikolaposa">Nikola Posa</a></p>
</td>
</tr>
<tr>
<td>Symfony</td>
<td><p><a href="https://github.com/suncat2000/MobileDetectBundle">Symfony2 Mobile Detect Bundle</a> - The bundle for detecting mobile devices, manage mobile view and redirect to the mobile and tablet version.
Made by <a href="https://github.com/suncat2000">Nikolay Ivlev</a>.</p>
<p><a href="https://github.com/jbinfo/MobileDetectServiceProvider">Silex Mobile Detect Service Provider</a> - <code>Silex</code> service provider to interact with Mobile detect class methods. Made by <a href="https://github.com/jbinfo">Lhassan Baazzi</a>.</p>
</td>
</tr>
<tr>
<td>Laravel</td>
<td>
<p><a href="https://github.com/jenssegers/Laravel-Agent">Laravel-Agent</a> a user agent class for Laravel, based on Mobile Detect with some additional functionality. Made by <a href="https://github.com/jenssegers">Jens Segers</a>.</p>
<p><a href="https://github.com/hisorange/browser-detect">BrowserDetect</a> is a browser &amp; mobile detection package, collects and wrap together the best user-agent identifiers for Laravel. Created by <a href="https://github.com/hisorange">Varga Zsolt</a>.</p>
</td>
</tr>
<tr>
<td>ExpressionEngine</td>
<td><p><a href="https://github.com/garethtdavies/detect-mobile">EE2 Detect Mobile</a> - Lightweight PHP plugin for <code>EE2</code> that detects a mobile browser using the Mobile Detect class. Made by <a href="https://github.com/garethtdavies">Gareth Davies</a>.</p></td>
</tr>
<tr>
<td>Yii Framework</td>
<td><p><a href="https://github.com/iamsalnikov/MobileDetect">Yii Extension</a> - Mobile detect plugin for Yii framework. Made by <a href="https://github.com/iamsalnikov">Alexey Salnikov</a>.</p></td>
</tr>
<tr>
<td>CakePHP</td>
<td><p><a href="https://github.com/chronon/CakePHP-MobileDetectComponent-Plugin">CakePHP MobileDetect</a> - <code>plugin</code> component for <code>CakePHP</code> 2.x. Made by <a href="https://github.com/chronon">Gregory Gaskill</a></p></td>
</tr>
<tr>
<td>FuelPHP</td>
<td><a href="https://github.com/rob-bar/special_agent">Special Agent</a> is a FuelPHP package which uses php-mobile-detect to determine whether a device is mobile or not.
It overrides the Fuelphp Agent class its methods. Made by <a href="https://github.com/rob-bar">Robbie Bardjin</a>.</td>
</tr>
<tr>
<td>Typo3</td>
<td><a href="http://docs.typo3.org/typo3cms/extensions/px_mobiledetect/1.0.2/">px_mobiledetect</a> is an extension that helps to detect visitor's mobile device class (if that’s tablet or mobile device like smartphone). Made by Alexander Tretyak.</td>
</tr>
<tr>
<td>Statamic</td>
<td><p><a href="https://github.com/sergeifilippov/statamic-mobile-detect">Statamic CMS Mobile Detect</a> - <code>plugin</code>. Made by <a href="https://github.com/haikulab/statamic-mobile-detect">Sergei Filippov of Haiku Lab</a>.</p></td>
</tr>
<tr>
<td>Kohana</td>
<td><p><a href="https://github.com/madeinnordeste/kohana-mobile-detect">Kohana Mobile Detect</a> - an example of implementation of <code>Mobile_Detect</code> class with Kohana framework. Written by <a href="https://github.com/madeinnordeste">Luiz Alberto S. Ribeiro</a>.</p></td>
</tr>
<tr>
<td>mobile-detect.js</td>
<td><p>A <a href="https://github.com/hgoebl/mobile-detect.js">JavaScript port</a> of Mobile-Detect class. Made by <a href="https://github.com/hgoebl">Heinrich Goebl</a></p></td>
</tr>
<tr>
<td>Perl</td>
<td><p><a href="http://www.buzzerstar.com/development/">MobileDetect.pm</a> - <code>Perl module</code> for Mobile Detect. Made by <a href="http://www.buzzerstar.com/">Sebastian Enger</a>.</p></td>
</tr>
<tr>
<td>python</td>
<td><p><a href="http://pypi.python.org/pypi/pymobiledetect">pymobiledetect</a> - Mobile detect <code>python package</code>. Made by Bas van Oostveen.</p></td>
</tr>
<tr>
<td>Ruby</td>
<td><p><a href="https://github.com/ktaragorn/mobile_detect">mobile_detect.rb</a> - A <code>Ruby gem</code> using the JSON data exposed by the php project and implementing a basic subset of the API (as much as can be done by the exposed data). Made by <a href="https://github.com/ktaragorn">Karthik T</a>.</p></td>
</tr>
<tr>
<td>GoMobileDetect</td>
<td><p><a href="https://github.com/Shaked/gomobiledetect">GoMobileDetect</a> - Go port of Mobile Detect class. Made by <a href="https://github.com/Shaked">Shaked</a>.</p></td>
</tr>
<tr>
<td>MemHT</td>
<td><p><a href="http://www.memht.com/">MemHT</a> is a Free PHP CMS and Blog that permit the creation and the management online of websites with few and easy steps. Has the class included in the core.</p></td>
</tr>
<tr>
<td>concrete5</td>
<td><p><a href="https://www.concrete5.org/">concrete5</a> is a CMS that is free and open source. The library is included in the core.</p></td>
</tr>
<tr>
<td>engine7</td>
<td><p><a href="https://github.com/gchiappe/exengine7">ExEngine 7</a> PHP Open Source Framework. The Mobile_Detect class is included in the engine.</p></td>
</tr>
<tr>
<td>Zikula</td>
<td><p><a href="http://zikula.org/">Zikula</a> is a free and open-source Content Management Framework, which allows you to run impressive websites and build powerful online applications. The core uses Mobile-Detect to switch to a special Mobile theme, using jQueryMobile</p></td>
</tr>
<tr>
<td>UserAgentInfo</td>
<td><p><a href="https://github.com/quentin389/UserAgentInfo">UserAgentInfo</a> is a PHP class for parsing user agent strings (HTTP_USER_AGENT). Includes mobile checks, bot checks, browser types/versions and more.
Based on browscap, Mobile_Detect and ua-parser. Created for high traffic websites and fast batch processing. Made by <a href="https://github.com/quentin389">quentin389</a></p></td>
</tr>
<tr>
<td>Craft CMS</td>
<td><p><a href="https://github.com/lewisjenkins/craft-lj-mobiledetect">LJ Mobile Detect</a> is a simple implementation of Mobile Detect for Craft CMS. Made by <a href="https://github.com/lewisjenkins">Lewis Jenkins</a></p></td>
</tr>
</table>

6
library/defuse/php-encryption-1.2.1/Crypto.php
View file

@ -342,9 +342,9 @@ final class Crypto
*/
private static function SecureRandom($octets)
{
self::EnsureFunctionExists("mcrypt_create_iv");
$random = mcrypt_create_iv($octets, MCRYPT_DEV_URANDOM);
if ($random === FALSE) {
self::EnsureFunctionExists("openssl_random_pseudo_bytes");
$random = openssl_random_pseudo_bytes($octets, $crypto_strong);
if ($crypto_strong === FALSE) {
throw new CannotPerformOperationException();
} else {
return $random;

479
library/phpsec/Crypt/AES.php
View file

@ -1,479 +0,0 @@
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Pure-PHP implementation of AES.
*
* Uses mcrypt, if available, and an internal implementation, otherwise.
*
* PHP versions 4 and 5
*
* If {@link Crypt_AES::setKeyLength() setKeyLength()} isn't called, it'll be calculated from
* {@link Crypt_AES::setKey() setKey()}. ie. if the key is 128-bits, the key length will be 128-bits. If it's 136-bits
* it'll be null-padded to 160-bits and 160 bits will be the key length until {@link Crypt_Rijndael::setKey() setKey()}
* is called, again, at which point, it'll be recalculated.
*
* Since Crypt_AES extends Crypt_Rijndael, some functions are available to be called that, in the context of AES, don't
* make a whole lot of sense. {@link Crypt_AES::setBlockLength() setBlockLength()}, for instance. Calling that function,
* however possible, won't do anything (AES has a fixed block length whereas Rijndael has a variable one).
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include('Crypt/AES.php');
*
* $aes = new Crypt_AES();
*
* $aes->setKey('abcdefghijklmnop');
*
* $size = 10 * 1024;
* $plaintext = '';
* for ($i = 0; $i < $size; $i++) {
* $plaintext.= 'a';
* }
*
* echo $aes->decrypt($aes->encrypt($plaintext));
* ?>
* </code>
*
* LICENSE: This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
* @category Crypt
* @package Crypt_AES
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMVIII Jim Wigginton
* @license http://www.gnu.org/licenses/lgpl.txt
* @version $Id: AES.php,v 1.7 2010/02/09 06:10:25 terrafrost Exp $
* @link http://phpseclib.sourceforge.net
*/
/**
* Include Crypt_Rijndael
*/
require_once 'Rijndael.php';
/**#@+
* @access public
* @see Crypt_AES::encrypt()
* @see Crypt_AES::decrypt()
*/
/**
* Encrypt / decrypt using the Counter mode.
*
* Set to -1 since that's what Crypt/Random.php uses to index the CTR mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Counter_.28CTR.29
*/
define('CRYPT_AES_MODE_CTR', -1);
/**
* Encrypt / decrypt using the Electronic Code Book mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Electronic_codebook_.28ECB.29
*/
define('CRYPT_AES_MODE_ECB', 1);
/**
* Encrypt / decrypt using the Code Book Chaining mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher-block_chaining_.28CBC.29
*/
define('CRYPT_AES_MODE_CBC', 2);
/**#@-*/
/**#@+
* @access private
* @see Crypt_AES::Crypt_AES()
*/
/**
* Toggles the internal implementation
*/
define('CRYPT_AES_MODE_INTERNAL', 1);
/**
* Toggles the mcrypt implementation
*/
define('CRYPT_AES_MODE_MCRYPT', 2);
/**#@-*/
/**
* Pure-PHP implementation of AES.
*
* @author Jim Wigginton <terrafrost@php.net>
* @version 0.1.0
* @access public
* @package Crypt_AES
*/
class Crypt_AES extends Crypt_Rijndael {
/**
* mcrypt resource for encryption
*
* The mcrypt resource can be recreated every time something needs to be created or it can be created just once.
* Since mcrypt operates in continuous mode, by default, it'll need to be recreated when in non-continuous mode.
*
* @see Crypt_AES::encrypt()
* @var String
* @access private
*/
var $enmcrypt;
/**
* mcrypt resource for decryption
*
* The mcrypt resource can be recreated every time something needs to be created or it can be created just once.
* Since mcrypt operates in continuous mode, by default, it'll need to be recreated when in non-continuous mode.
*
* @see Crypt_AES::decrypt()
* @var String
* @access private
*/
var $demcrypt;
/**
* Default Constructor.
*
* Determines whether or not the mcrypt extension should be used. $mode should only, at present, be
* CRYPT_AES_MODE_ECB or CRYPT_AES_MODE_CBC. If not explictly set, CRYPT_AES_MODE_CBC will be used.
*
* @param optional Integer $mode
* @return Crypt_AES
* @access public
*/
function Crypt_AES($mode = CRYPT_AES_MODE_CBC)
{
if ( !defined('CRYPT_AES_MODE') ) {
switch (true) {
case extension_loaded('mcrypt'):
// i'd check to see if aes was supported, by doing in_array('des', mcrypt_list_algorithms('')),
// but since that can be changed after the object has been created, there doesn't seem to be
// a lot of point...
define('CRYPT_AES_MODE', CRYPT_AES_MODE_MCRYPT);
break;
default:
define('CRYPT_AES_MODE', CRYPT_AES_MODE_INTERNAL);
}
}
switch ( CRYPT_AES_MODE ) {
case CRYPT_AES_MODE_MCRYPT:
switch ($mode) {
case CRYPT_AES_MODE_ECB:
$this->mode = MCRYPT_MODE_ECB;
break;
case CRYPT_AES_MODE_CTR:
// ctr doesn't have a constant associated with it even though it appears to be fairly widely
// supported. in lieu of knowing just how widely supported it is, i've, for now, opted not to
// include a compatibility layer. the layer has been implemented but, for now, is commented out.
$this->mode = 'ctr';
//$this->mode = in_array('ctr', mcrypt_list_modes()) ? 'ctr' : CRYPT_AES_MODE_CTR;
break;
case CRYPT_AES_MODE_CBC:
default:
$this->mode = MCRYPT_MODE_CBC;
}
break;
default:
switch ($mode) {
case CRYPT_AES_MODE_ECB:
$this->mode = CRYPT_RIJNDAEL_MODE_ECB;
break;
case CRYPT_AES_MODE_CTR:
$this->mode = CRYPT_RIJNDAEL_MODE_CTR;
break;
case CRYPT_AES_MODE_CBC:
default:
$this->mode = CRYPT_RIJNDAEL_MODE_CBC;
}
}
if (CRYPT_AES_MODE == CRYPT_AES_MODE_INTERNAL) {
parent::Crypt_Rijndael($this->mode);
}
}
/**
* Dummy function
*
* Since Crypt_AES extends Crypt_Rijndael, this function is, technically, available, but it doesn't do anything.
*
* @access public
* @param Integer $length
*/
function setBlockLength($length)
{
return;
}
/**
* Encrypts a message.
*
* $plaintext will be padded with up to 16 additional bytes. Other AES implementations may or may not pad in the
* same manner. Other common approaches to padding and the reasons why it's necessary are discussed in the following
* URL:
*
* {@link http://www.di-mgt.com.au/cryptopad.html http://www.di-mgt.com.au/cryptopad.html}
*
* An alternative to padding is to, separately, send the length of the file. This is what SSH, in fact, does.
* strlen($plaintext) will still need to be a multiple of 16, however, arbitrary values can be added to make it that
* length.
*
* @see Crypt_AES::decrypt()
* @access public
* @param String $plaintext
*/
function encrypt($plaintext)
{
if ( CRYPT_AES_MODE == CRYPT_AES_MODE_MCRYPT ) {
$this->_mcryptSetup();
/*
if ($this->mode == CRYPT_AES_MODE_CTR) {
$iv = $this->encryptIV;
$xor = mcrypt_generic($this->enmcrypt, $this->_generate_xor(strlen($plaintext), $iv));
$ciphertext = $plaintext ^ $xor;
if ($this->continuousBuffer) {
$this->encryptIV = $iv;
}
return $ciphertext;
}
*/
if ($this->mode != 'ctr') {
$plaintext = $this->_pad($plaintext);
}
$ciphertext = mcrypt_generic($this->enmcrypt, $plaintext);
if (!$this->continuousBuffer) {
mcrypt_generic_init($this->enmcrypt, $this->key, $this->iv);
}
return $ciphertext;
}
return parent::encrypt($plaintext);
}
/**
* Decrypts a message.
*
* If strlen($ciphertext) is not a multiple of 16, null bytes will be added to the end of the string until it is.
*
* @see Crypt_AES::encrypt()
* @access public
* @param String $ciphertext
*/
function decrypt($ciphertext)
{
if ( CRYPT_AES_MODE == CRYPT_AES_MODE_MCRYPT ) {
$this->_mcryptSetup();
/*
if ($this->mode == CRYPT_AES_MODE_CTR) {
$iv = $this->decryptIV;
$xor = mcrypt_generic($this->enmcrypt, $this->_generate_xor(strlen($ciphertext), $iv));
$plaintext = $ciphertext ^ $xor;
if ($this->continuousBuffer) {
$this->decryptIV = $iv;
}
return $plaintext;
}
*/
if ($this->mode != 'ctr') {
// we pad with chr(0) since that's what mcrypt_generic does. to quote from http://php.net/function.mcrypt-generic :
// "The data is padded with "\0" to make sure the length of the data is n * blocksize."
$ciphertext = str_pad($ciphertext, (strlen($ciphertext) + 15) & 0xFFFFFFF0, chr(0));
}
$plaintext = mdecrypt_generic($this->demcrypt, $ciphertext);
if (!$this->continuousBuffer) {
mcrypt_generic_init($this->demcrypt, $this->key, $this->iv);
}
return $this->mode != 'ctr' ? $this->_unpad($plaintext) : $plaintext;
}
return parent::decrypt($ciphertext);
}
/**
* Setup mcrypt
*
* Validates all the variables.
*
* @access private
*/
function _mcryptSetup()
{
if (!$this->changed) {
return;
}
if (!$this->explicit_key_length) {
// this just copied from Crypt_Rijndael::_setup()
$length = strlen($this->key) >> 2;
if ($length > 8) {
$length = 8;
} else if ($length < 4) {
$length = 4;
}
$this->Nk = $length;
$this->key_size = $length << 2;
}
switch ($this->Nk) {
case 4: // 128
$this->key_size = 16;
break;
case 5: // 160
case 6: // 192
$this->key_size = 24;
break;
case 7: // 224
case 8: // 256
$this->key_size = 32;
}
$this->key = substr($this->key, 0, $this->key_size);
$this->encryptIV = $this->decryptIV = $this->iv = str_pad(substr($this->iv, 0, 16), 16, chr(0));
if (!isset($this->enmcrypt)) {
$mode = $this->mode;
//$mode = $this->mode == CRYPT_AES_MODE_CTR ? MCRYPT_MODE_ECB : $this->mode;
$this->demcrypt = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', $mode, '');
$this->enmcrypt = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', $mode, '');
} // else should mcrypt_generic_deinit be called?
mcrypt_generic_init($this->demcrypt, $this->key, $this->iv);
mcrypt_generic_init($this->enmcrypt, $this->key, $this->iv);
$this->changed = false;
}
/**
* Encrypts a block
*
* Optimized over Crypt_Rijndael's implementation by means of loop unrolling.
*
* @see Crypt_Rijndael::_encryptBlock()
* @access private
* @param String $in
* @return String
*/
function _encryptBlock($in)
{
$state = unpack('N*word', $in);
$Nr = $this->Nr;
$w = $this->w;
$t0 = $this->t0;
$t1 = $this->t1;
$t2 = $this->t2;
$t3 = $this->t3;
// addRoundKey and reindex $state
$state = array(
$state['word1'] ^ $w[0][0],
$state['word2'] ^ $w[0][1],
$state['word3'] ^ $w[0][2],
$state['word4'] ^ $w[0][3]
);
// shiftRows + subWord + mixColumns + addRoundKey
// we could loop unroll this and use if statements to do more rounds as necessary, but, in my tests, that yields
// only a marginal improvement. since that also, imho, hinders the readability of the code, i've opted not to do it.
for ($round = 1; $round < $this->Nr; $round++) {
$state = array(
$t0[$state[0] & 0xFF000000] ^ $t1[$state[1] & 0x00FF0000] ^ $t2[$state[2] & 0x0000FF00] ^ $t3[$state[3] & 0x000000FF] ^ $w[$round][0],
$t0[$state[1] & 0xFF000000] ^ $t1[$state[2] & 0x00FF0000] ^ $t2[$state[3] & 0x0000FF00] ^ $t3[$state[0] & 0x000000FF] ^ $w[$round][1],
$t0[$state[2] & 0xFF000000] ^ $t1[$state[3] & 0x00FF0000] ^ $t2[$state[0] & 0x0000FF00] ^ $t3[$state[1] & 0x000000FF] ^ $w[$round][2],
$t0[$state[3] & 0xFF000000] ^ $t1[$state[0] & 0x00FF0000] ^ $t2[$state[1] & 0x0000FF00] ^ $t3[$state[2] & 0x000000FF] ^ $w[$round][3]
);
}
// subWord
$state = array(
$this->_subWord($state[0]),
$this->_subWord($state[1]),
$this->_subWord($state[2]),
$this->_subWord($state[3])
);
// shiftRows + addRoundKey
$state = array(
($state[0] & 0xFF000000) ^ ($state[1] & 0x00FF0000) ^ ($state[2] & 0x0000FF00) ^ ($state[3] & 0x000000FF) ^ $this->w[$this->Nr][0],
($state[1] & 0xFF000000) ^ ($state[2] & 0x00FF0000) ^ ($state[3] & 0x0000FF00) ^ ($state[0] & 0x000000FF) ^ $this->w[$this->Nr][1],
($state[2] & 0xFF000000) ^ ($state[3] & 0x00FF0000) ^ ($state[0] & 0x0000FF00) ^ ($state[1] & 0x000000FF) ^ $this->w[$this->Nr][2],
($state[3] & 0xFF000000) ^ ($state[0] & 0x00FF0000) ^ ($state[1] & 0x0000FF00) ^ ($state[2] & 0x000000FF) ^ $this->w[$this->Nr][3]
);
return pack('N*', $state[0], $state[1], $state[2], $state[3]);
}
/**
* Decrypts a block
*
* Optimized over Crypt_Rijndael's implementation by means of loop unrolling.
*
* @see Crypt_Rijndael::_decryptBlock()
* @access private
* @param String $in
* @return String
*/
function _decryptBlock($in)
{
$state = unpack('N*word', $in);
$Nr = $this->Nr;
$dw = $this->dw;
$dt0 = $this->dt0;
$dt1 = $this->dt1;
$dt2 = $this->dt2;
$dt3 = $this->dt3;
// addRoundKey and reindex $state
$state = array(
$state['word1'] ^ $dw[$this->Nr][0],
$state['word2'] ^ $dw[$this->Nr][1],
$state['word3'] ^ $dw[$this->Nr][2],
$state['word4'] ^ $dw[$this->Nr][3]
);
// invShiftRows + invSubBytes + invMixColumns + addRoundKey
for ($round = $this->Nr - 1; $round > 0; $round--) {
$state = array(
$dt0[$state[0] & 0xFF000000] ^ $dt1[$state[3] & 0x00FF0000] ^ $dt2[$state[2] & 0x0000FF00] ^ $dt3[$state[1] & 0x000000FF] ^ $dw[$round][0],
$dt0[$state[1] & 0xFF000000] ^ $dt1[$state[0] & 0x00FF0000] ^ $dt2[$state[3] & 0x0000FF00] ^ $dt3[$state[2] & 0x000000FF] ^ $dw[$round][1],
$dt0[$state[2] & 0xFF000000] ^ $dt1[$state[1] & 0x00FF0000] ^ $dt2[$state[0] & 0x0000FF00] ^ $dt3[$state[3] & 0x000000FF] ^ $dw[$round][2],
$dt0[$state[3] & 0xFF000000] ^ $dt1[$state[2] & 0x00FF0000] ^ $dt2[$state[1] & 0x0000FF00] ^ $dt3[$state[0] & 0x000000FF] ^ $dw[$round][3]
);
}
// invShiftRows + invSubWord + addRoundKey
$state = array(
$this->_invSubWord(($state[0] & 0xFF000000) ^ ($state[3] & 0x00FF0000) ^ ($state[2] & 0x0000FF00) ^ ($state[1] & 0x000000FF)) ^ $dw[0][0],
$this->_invSubWord(($state[1] & 0xFF000000) ^ ($state[0] & 0x00FF0000) ^ ($state[3] & 0x0000FF00) ^ ($state[2] & 0x000000FF)) ^ $dw[0][1],
$this->_invSubWord(($state[2] & 0xFF000000) ^ ($state[1] & 0x00FF0000) ^ ($state[0] & 0x0000FF00) ^ ($state[3] & 0x000000FF)) ^ $dw[0][2],
$this->_invSubWord(($state[3] & 0xFF000000) ^ ($state[2] & 0x00FF0000) ^ ($state[1] & 0x0000FF00) ^ ($state[0] & 0x000000FF)) ^ $dw[0][3]
);
return pack('N*', $state[0], $state[1], $state[2], $state[3]);
}
}
// vim: ts=4:sw=4:et:
// vim6: fdl=1:

945
library/phpsec/Crypt/DES.php
View file

@ -1,945 +0,0 @@
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Pure-PHP implementation of DES.
*
* Uses mcrypt, if available, and an internal implementation, otherwise.
*
* PHP versions 4 and 5
*
* Useful resources are as follows:
*
* - {@link http://en.wikipedia.org/wiki/DES_supplementary_material Wikipedia: DES supplementary material}
* - {@link http://www.itl.nist.gov/fipspubs/fip46-2.htm FIPS 46-2 - (DES), Data Encryption Standard}
* - {@link http://www.cs.eku.edu/faculty/styer/460/Encrypt/JS-DES.html JavaScript DES Example}
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include('Crypt/DES.php');
*
* $des = new Crypt_DES();
*
* $des->setKey('abcdefgh');
*
* $size = 10 * 1024;
* $plaintext = '';
* for ($i = 0; $i < $size; $i++) {
* $plaintext.= 'a';
* }
*
* echo $des->decrypt($des->encrypt($plaintext));
* ?>
* </code>
*
* LICENSE: This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
* @category Crypt
* @package Crypt_DES
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMVII Jim Wigginton
* @license http://www.gnu.org/licenses/lgpl.txt
* @version $Id: DES.php,v 1.12 2010/02/09 06:10:26 terrafrost Exp $
* @link http://phpseclib.sourceforge.net
*/
/**#@+
* @access private
* @see Crypt_DES::_prepareKey()
* @see Crypt_DES::_processBlock()
*/
/**
* Contains array_reverse($keys[CRYPT_DES_DECRYPT])
*/
define('CRYPT_DES_ENCRYPT', 0);
/**
* Contains array_reverse($keys[CRYPT_DES_ENCRYPT])
*/
define('CRYPT_DES_DECRYPT', 1);
/**#@-*/
/**#@+
* @access public
* @see Crypt_DES::encrypt()
* @see Crypt_DES::decrypt()
*/
/**
* Encrypt / decrypt using the Counter mode.
*
* Set to -1 since that's what Crypt/Random.php uses to index the CTR mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Counter_.28CTR.29
*/
define('CRYPT_DES_MODE_CTR', -1);
/**
* Encrypt / decrypt using the Electronic Code Book mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Electronic_codebook_.28ECB.29
*/
define('CRYPT_DES_MODE_ECB', 1);
/**
* Encrypt / decrypt using the Code Book Chaining mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher-block_chaining_.28CBC.29
*/
define('CRYPT_DES_MODE_CBC', 2);
/**#@-*/
/**#@+
* @access private
* @see Crypt_DES::Crypt_DES()
*/
/**
* Toggles the internal implementation
*/
define('CRYPT_DES_MODE_INTERNAL', 1);
/**
* Toggles the mcrypt implementation
*/
define('CRYPT_DES_MODE_MCRYPT', 2);
/**#@-*/
/**
* Pure-PHP implementation of DES.
*
* @author Jim Wigginton <terrafrost@php.net>
* @version 0.1.0
* @access public
* @package Crypt_DES
*/
class Crypt_DES {
/**
* The Key Schedule
*
* @see Crypt_DES::setKey()
* @var Array
* @access private
*/
var $keys = "\0\0\0\0\0\0\0\0";
/**
* The Encryption Mode
*
* @see Crypt_DES::Crypt_DES()
* @var Integer
* @access private
*/
var $mode;
/**
* Continuous Buffer status
*
* @see Crypt_DES::enableContinuousBuffer()
* @var Boolean
* @access private
*/
var $continuousBuffer = false;
/**
* Padding status
*
* @see Crypt_DES::enablePadding()
* @var Boolean
* @access private
*/
var $padding = true;
/**
* The Initialization Vector
*
* @see Crypt_DES::setIV()
* @var String
* @access private
*/
var $iv = "\0\0\0\0\0\0\0\0";
/**
* A "sliding" Initialization Vector
*
* @see Crypt_DES::enableContinuousBuffer()
* @var String
* @access private
*/
var $encryptIV = "\0\0\0\0\0\0\0\0";
/**
* A "sliding" Initialization Vector
*
* @see Crypt_DES::enableContinuousBuffer()
* @var String
* @access private
*/
var $decryptIV = "\0\0\0\0\0\0\0\0";
/**
* mcrypt resource for encryption
*
* The mcrypt resource can be recreated every time something needs to be created or it can be created just once.
* Since mcrypt operates in continuous mode, by default, it'll need to be recreated when in non-continuous mode.
*
* @see Crypt_AES::encrypt()
* @var String
* @access private
*/
var $enmcrypt;
/**
* mcrypt resource for decryption
*
* The mcrypt resource can be recreated every time something needs to be created or it can be created just once.
* Since mcrypt operates in continuous mode, by default, it'll need to be recreated when in non-continuous mode.
*
* @see Crypt_AES::decrypt()
* @var String
* @access private
*/
var $demcrypt;
/**
* Does the (en|de)mcrypt resource need to be (re)initialized?
*
* @see setKey()
* @see setIV()
* @var Boolean
* @access private
*/
var $changed = true;
/**
* Default Constructor.
*
* Determines whether or not the mcrypt extension should be used. $mode should only, at present, be
* CRYPT_DES_MODE_ECB or CRYPT_DES_MODE_CBC. If not explictly set, CRYPT_DES_MODE_CBC will be used.
*
* @param optional Integer $mode
* @return Crypt_DES
* @access public
*/
function Crypt_DES($mode = CRYPT_MODE_DES_CBC)
{
if ( !defined('CRYPT_DES_MODE') ) {
switch (true) {
case extension_loaded('mcrypt'):
// i'd check to see if des was supported, by doing in_array('des', mcrypt_list_algorithms('')),
// but since that can be changed after the object has been created, there doesn't seem to be
// a lot of point...
define('CRYPT_DES_MODE', CRYPT_DES_MODE_MCRYPT);
break;
default:
define('CRYPT_DES_MODE', CRYPT_DES_MODE_INTERNAL);
}
}
switch ( CRYPT_DES_MODE ) {
case CRYPT_DES_MODE_MCRYPT:
switch ($mode) {
case CRYPT_DES_MODE_ECB:
$this->mode = MCRYPT_MODE_ECB;
break;
case CRYPT_DES_MODE_CTR:
$this->mode = 'ctr';
//$this->mode = in_array('ctr', mcrypt_list_modes()) ? 'ctr' : CRYPT_DES_MODE_CTR;
break;
case CRYPT_DES_MODE_CBC:
default:
$this->mode = MCRYPT_MODE_CBC;
}
break;
default:
switch ($mode) {
case CRYPT_DES_MODE_ECB:
case CRYPT_DES_MODE_CTR:
case CRYPT_DES_MODE_CBC:
$this->mode = $mode;
break;
default:
$this->mode = CRYPT_DES_MODE_CBC;
}
}
}
/**
* Sets the key.
*
* Keys can be of any length. DES, itself, uses 64-bit keys (eg. strlen($key) == 8), however, we
* only use the first eight, if $key has more then eight characters in it, and pad $key with the
* null byte if it is less then eight characters long.
*
* DES also requires that every eighth bit be a parity bit, however, we'll ignore that.
*
* If the key is not explicitly set, it'll be assumed to be all zero's.
*
* @access public
* @param String $key
*/
function setKey($key)
{
$this->keys = ( CRYPT_DES_MODE == CRYPT_DES_MODE_MCRYPT ) ? substr($key, 0, 8) : $this->_prepareKey($key);
$this->changed = true;
}
/**
* Sets the initialization vector. (optional)
*
* SetIV is not required when CRYPT_DES_MODE_ECB is being used. If not explictly set, it'll be assumed
* to be all zero's.
*
* @access public
* @param String $iv
*/
function setIV($iv)
{
$this->encryptIV = $this->decryptIV = $this->iv = str_pad(substr($iv, 0, 8), 8, chr(0));
$this->changed = true;
}
/**
* Generate CTR XOR encryption key
*
* Encrypt the output of this and XOR it against the ciphertext / plaintext to get the
* plaintext / ciphertext in CTR mode.
*
* @see Crypt_DES::decrypt()
* @see Crypt_DES::encrypt()
* @access public
* @param Integer $length
* @param String $iv
*/
function _generate_xor($length, &$iv)
{
$xor = '';
$num_blocks = ($length + 7) >> 3;
for ($i = 0; $i < $num_blocks; $i++) {
$xor.= $iv;
for ($j = 4; $j <= 8; $j+=4) {
$temp = substr($iv, -$j, 4);
switch ($temp) {
case "\xFF\xFF\xFF\xFF":
$iv = substr_replace($iv, "\x00\x00\x00\x00", -$j, 4);
break;
case "\x7F\xFF\xFF\xFF":
$iv = substr_replace($iv, "\x80\x00\x00\x00", -$j, 4);
break 2;
default:
extract(unpack('Ncount', $temp));
$iv = substr_replace($iv, pack('N', $count + 1), -$j, 4);
break 2;
}
}
}
return $xor;
}
/**
* Encrypts a message.
*
* $plaintext will be padded with up to 8 additional bytes. Other DES implementations may or may not pad in the
* same manner. Other common approaches to padding and the reasons why it's necessary are discussed in the following
* URL:
*
* {@link http://www.di-mgt.com.au/cryptopad.html http://www.di-mgt.com.au/cryptopad.html}
*
* An alternative to padding is to, separately, send the length of the file. This is what SSH, in fact, does.
* strlen($plaintext) will still need to be a multiple of 8, however, arbitrary values can be added to make it that
* length.
*
* @see Crypt_DES::decrypt()
* @access public
* @param String $plaintext
*/
function encrypt($plaintext)
{
if ($this->mode != CRYPT_DES_MODE_CTR && $this->mode != 'ctr') {
$plaintext = $this->_pad($plaintext);
}
if ( CRYPT_DES_MODE == CRYPT_DES_MODE_MCRYPT ) {
if ($this->changed) {
if (!isset($this->enmcrypt)) {
$this->enmcrypt = mcrypt_module_open(MCRYPT_DES, '', $this->mode, '');
}
mcrypt_generic_init($this->enmcrypt, $this->keys, $this->encryptIV);
$this->changed = false;
}
$ciphertext = mcrypt_generic($this->enmcrypt, $plaintext);
if (!$this->continuousBuffer) {
mcrypt_generic_init($this->enmcrypt, $this->keys, $this->encryptIV);
}
return $ciphertext;
}
if (!is_array($this->keys)) {
$this->keys = $this->_prepareKey("\0\0\0\0\0\0\0\0");
}
$ciphertext = '';
switch ($this->mode) {
case CRYPT_DES_MODE_ECB:
for ($i = 0; $i < strlen($plaintext); $i+=8) {
$ciphertext.= $this->_processBlock(substr($plaintext, $i, 8), CRYPT_DES_ENCRYPT);
}
break;
case CRYPT_DES_MODE_CBC:
$xor = $this->encryptIV;
for ($i = 0; $i < strlen($plaintext); $i+=8) {
$block = substr($plaintext, $i, 8);
$block = $this->_processBlock($block ^ $xor, CRYPT_DES_ENCRYPT);
$xor = $block;
$ciphertext.= $block;
}
if ($this->continuousBuffer) {
$this->encryptIV = $xor;
}
break;
case CRYPT_DES_MODE_CTR:
$xor = $this->encryptIV;
for ($i = 0; $i < strlen($plaintext); $i+=8) {
$block = substr($plaintext, $i, 8);
$key = $this->_processBlock($this->_generate_xor(8, $xor), CRYPT_DES_ENCRYPT);
$ciphertext.= $block ^ $key;
}
if ($this->continuousBuffer) {
$this->encryptIV = $xor;
}
}
return $ciphertext;
}
/**
* Decrypts a message.
*
* If strlen($ciphertext) is not a multiple of 8, null bytes will be added to the end of the string until it is.
*
* @see Crypt_DES::encrypt()
* @access public
* @param String $ciphertext
*/
function decrypt($ciphertext)
{
if ($this->mode != CRYPT_DES_MODE_CTR && $this->mode != 'ctr') {
// we pad with chr(0) since that's what mcrypt_generic does. to quote from http://php.net/function.mcrypt-generic :
// "The data is padded with "\0" to make sure the length of the data is n * blocksize."
$ciphertext = str_pad($ciphertext, (strlen($ciphertext) + 7) & 0xFFFFFFF8, chr(0));
}
if ( CRYPT_DES_MODE == CRYPT_DES_MODE_MCRYPT ) {
if ($this->changed) {
if (!isset($this->demcrypt)) {
$this->demcrypt = mcrypt_module_open(MCRYPT_DES, '', $this->mode, '');
}
mcrypt_generic_init($this->demcrypt, $this->keys, $this->decryptIV);
$this->changed = false;
}
$plaintext = mdecrypt_generic($this->demcrypt, $ciphertext);
if (!$this->continuousBuffer) {
mcrypt_generic_init($this->demcrypt, $this->keys, $this->decryptIV);
}
return $this->mode != 'ctr' ? $this->_unpad($plaintext) : $plaintext;
}
if (!is_array($this->keys)) {
$this->keys = $this->_prepareKey("\0\0\0\0\0\0\0\0");
}
$plaintext = '';
switch ($this->mode) {
case CRYPT_DES_MODE_ECB:
for ($i = 0; $i < strlen($ciphertext); $i+=8) {
$plaintext.= $this->_processBlock(substr($ciphertext, $i, 8), CRYPT_DES_DECRYPT);
}
break;
case CRYPT_DES_MODE_CBC:
$xor = $this->decryptIV;
for ($i = 0; $i < strlen($ciphertext); $i+=8) {
$block = substr($ciphertext, $i, 8);
$plaintext.= $this->_processBlock($block, CRYPT_DES_DECRYPT) ^ $xor;
$xor = $block;
}
if ($this->continuousBuffer) {
$this->decryptIV = $xor;
}
break;
case CRYPT_DES_MODE_CTR:
$xor = $this->decryptIV;
for ($i = 0; $i < strlen($ciphertext); $i+=8) {
$block = substr($ciphertext, $i, 8);
$key = $this->_processBlock($this->_generate_xor(8, $xor), CRYPT_DES_ENCRYPT);
$plaintext.= $block ^ $key;
}
if ($this->continuousBuffer) {
$this->decryptIV = $xor;
}
}
return $this->mode != CRYPT_DES_MODE_CTR ? $this->_unpad($plaintext) : $plaintext;
}
/**
* Treat consecutive "packets" as if they are a continuous buffer.
*
* Say you have a 16-byte plaintext $plaintext. Using the default behavior, the two following code snippets
* will yield different outputs:
*
* <code>
* echo $des->encrypt(substr($plaintext, 0, 8));
* echo $des->encrypt(substr($plaintext, 8, 8));
* </code>
* <code>
* echo $des->encrypt($plaintext);
* </code>
*
* The solution is to enable the continuous buffer. Although this will resolve the above discrepancy, it creates
* another, as demonstrated with the following:
*
* <code>
* $des->encrypt(substr($plaintext, 0, 8));
* echo $des->decrypt($des->encrypt(substr($plaintext, 8, 8)));
* </code>
* <code>
* echo $des->decrypt($des->encrypt(substr($plaintext, 8, 8)));
* </code>
*
* With the continuous buffer disabled, these would yield the same output. With it enabled, they yield different
* outputs. The reason is due to the fact that the initialization vector's change after every encryption /
* decryption round when the continuous buffer is enabled. When it's disabled, they remain constant.
*
* Put another way, when the continuous buffer is enabled, the state of the Crypt_DES() object changes after each
* encryption / decryption round, whereas otherwise, it'd remain constant. For this reason, it's recommended that
* continuous buffers not be used. They do offer better security and are, in fact, sometimes required (SSH uses them),
* however, they are also less intuitive and more likely to cause you problems.
*
* @see Crypt_DES::disableContinuousBuffer()
* @access public
*/
function enableContinuousBuffer()
{
$this->continuousBuffer = true;
}
/**
* Treat consecutive packets as if they are a discontinuous buffer.
*
* The default behavior.
*
* @see Crypt_DES::enableContinuousBuffer()
* @access public
*/
function disableContinuousBuffer()
{
$this->continuousBuffer = false;
$this->encryptIV = $this->iv;
$this->decryptIV = $this->iv;
}
/**
* Pad "packets".
*
* DES works by encrypting eight bytes at a time. If you ever need to encrypt or decrypt something that's not
* a multiple of eight, it becomes necessary to pad the input so that it's length is a multiple of eight.
*
* Padding is enabled by default. Sometimes, however, it is undesirable to pad strings. Such is the case in SSH1,
* where "packets" are padded with random bytes before being encrypted. Unpad these packets and you risk stripping
* away characters that shouldn't be stripped away. (SSH knows how many bytes are added because the length is
* transmitted separately)
*
* @see Crypt_DES::disablePadding()
* @access public
*/
function enablePadding()
{
$this->padding = true;
}
/**
* Do not pad packets.
*
* @see Crypt_DES::enablePadding()
* @access public
*/
function disablePadding()
{
$this->padding = false;
}
/**
* Pads a string
*
* Pads a string using the RSA PKCS padding standards so that its length is a multiple of the blocksize (8).
* 8 - (strlen($text) & 7) bytes are added, each of which is equal to chr(8 - (strlen($text) & 7)
*
* If padding is disabled and $text is not a multiple of the blocksize, the string will be padded regardless
* and padding will, hence forth, be enabled.
*
* @see Crypt_DES::_unpad()
* @access private
*/
function _pad($text)
{
$length = strlen($text);
if (!$this->padding) {
if (($length & 7) == 0) {
return $text;
} else {
user_error("The plaintext's length ($length) is not a multiple of the block size (8)", E_USER_NOTICE);
$this->padding = true;
}
}
$pad = 8 - ($length & 7);
return str_pad($text, $length + $pad, chr($pad));
}
/**
* Unpads a string
*
* If padding is enabled and the reported padding length is invalid the encryption key will be assumed to be wrong
* and false will be returned.
*
* @see Crypt_DES::_pad()
* @access private
*/
function _unpad($text)
{
if (!$this->padding) {
return $text;
}
$length = ord($text[strlen($text) - 1]);
if (!$length || $length > 8) {
return false;
}
return substr($text, 0, -$length);
}
/**
* Encrypts or decrypts a 64-bit block
*
* $mode should be either CRYPT_DES_ENCRYPT or CRYPT_DES_DECRYPT. See
* {@link http://en.wikipedia.org/wiki/Image:Feistel.png Feistel.png} to get a general
* idea of what this function does.
*
* @access private
* @param String $block
* @param Integer $mode
* @return String
*/
function _processBlock($block, $mode)
{
// s-boxes. in the official DES docs, they're described as being matrices that
// one accesses by using the first and last bits to determine the row and the
// middle four bits to determine the column. in this implementation, they've
// been converted to vectors
static $sbox = array(
array(
14, 0, 4, 15, 13, 7, 1, 4, 2, 14, 15, 2, 11, 13, 8, 1,
3, 10 ,10, 6, 6, 12, 12, 11, 5, 9, 9, 5, 0, 3, 7, 8,
4, 15, 1, 12, 14, 8, 8, 2, 13, 4, 6, 9, 2, 1, 11, 7,
15, 5, 12, 11, 9, 3, 7, 14, 3, 10, 10, 0, 5, 6, 0, 13
),
array(
15, 3, 1, 13, 8, 4, 14, 7, 6, 15, 11, 2, 3, 8, 4, 14,
9, 12, 7, 0, 2, 1, 13, 10, 12, 6, 0, 9, 5, 11, 10, 5,
0, 13, 14, 8, 7, 10, 11, 1, 10, 3, 4, 15, 13, 4, 1, 2,
5, 11, 8, 6, 12, 7, 6, 12, 9, 0, 3, 5, 2, 14, 15, 9
),
array(
10, 13, 0, 7, 9, 0, 14, 9, 6, 3, 3, 4, 15, 6, 5, 10,
1, 2, 13, 8, 12, 5, 7, 14, 11, 12, 4, 11, 2, 15, 8, 1,
13, 1, 6, 10, 4, 13, 9, 0, 8, 6, 15, 9, 3, 8, 0, 7,
11, 4, 1, 15, 2, 14, 12, 3, 5, 11, 10, 5, 14, 2, 7, 12
),
array(
7, 13, 13, 8, 14, 11, 3, 5, 0, 6, 6, 15, 9, 0, 10, 3,
1, 4, 2, 7, 8, 2, 5, 12, 11, 1, 12, 10, 4, 14, 15, 9,
10, 3, 6, 15, 9, 0, 0, 6, 12, 10, 11, 1, 7, 13, 13, 8,
15, 9, 1, 4, 3, 5, 14, 11, 5, 12, 2, 7, 8, 2, 4, 14
),
array(
2, 14, 12, 11, 4, 2, 1, 12, 7, 4, 10, 7, 11, 13, 6, 1,
8, 5, 5, 0, 3, 15, 15, 10, 13, 3, 0, 9, 14, 8, 9, 6,
4, 11, 2, 8, 1, 12, 11, 7, 10, 1, 13, 14, 7, 2, 8, 13,
15, 6, 9, 15, 12, 0, 5, 9, 6, 10, 3, 4, 0, 5, 14, 3
),
array(
12, 10, 1, 15, 10, 4, 15, 2, 9, 7, 2, 12, 6, 9, 8, 5,
0, 6, 13, 1, 3, 13, 4, 14, 14, 0, 7, 11, 5, 3, 11, 8,
9, 4, 14, 3, 15, 2, 5, 12, 2, 9, 8, 5, 12, 15, 3, 10,
7, 11, 0, 14, 4, 1, 10, 7, 1, 6, 13, 0, 11, 8, 6, 13
),
array(
4, 13, 11, 0, 2, 11, 14, 7, 15, 4, 0, 9, 8, 1, 13, 10,
3, 14, 12, 3, 9, 5, 7, 12, 5, 2, 10, 15, 6, 8, 1, 6,
1, 6, 4, 11, 11, 13, 13, 8, 12, 1, 3, 4, 7, 10, 14, 7,
10, 9, 15, 5, 6, 0, 8, 15, 0, 14, 5, 2, 9, 3, 2, 12
),
array(
13, 1, 2, 15, 8, 13, 4, 8, 6, 10, 15, 3, 11, 7, 1, 4,
10, 12, 9, 5, 3, 6, 14, 11, 5, 0, 0, 14, 12, 9, 7, 2,
7, 2, 11, 1, 4, 14, 1, 7, 9, 4, 12, 10, 14, 8, 2, 13,
0, 15, 6, 12, 10, 9, 13, 0, 15, 3, 3, 5, 5, 6, 8, 11
)
);
$keys = $this->keys;
$temp = unpack('Na/Nb', $block);
$block = array($temp['a'], $temp['b']);
// because php does arithmetic right shifts, if the most significant bits are set, right
// shifting those into the correct position will add 1's - not 0's. this will intefere
// with the | operation unless a second & is done. so we isolate these bits and left shift
// them into place. we then & each block with 0x7FFFFFFF to prevennt 1's from being added
// for any other shifts.
$msb = array(
($block[0] >> 31) & 1,
($block[1] >> 31) & 1
);
$block[0] &= 0x7FFFFFFF;
$block[1] &= 0x7FFFFFFF;
// we isolate the appropriate bit in the appropriate integer and shift as appropriate. in
// some cases, there are going to be multiple bits in the same integer that need to be shifted
// in the same way. we combine those into one shift operation.
$block = array(
(($block[1] & 0x00000040) << 25) | (($block[1] & 0x00004000) << 16) |
(($block[1] & 0x00400001) << 7) | (($block[1] & 0x40000100) >> 2) |
(($block[0] & 0x00000040) << 21) | (($block[0] & 0x00004000) << 12) |
(($block[0] & 0x00400001) << 3) | (($block[0] & 0x40000100) >> 6) |
(($block[1] & 0x00000010) << 19) | (($block[1] & 0x00001000) << 10) |
(($block[1] & 0x00100000) << 1) | (($block[1] & 0x10000000) >> 8) |
(($block[0] & 0x00000010) << 15) | (($block[0] & 0x00001000) << 6) |
(($block[0] & 0x00100000) >> 3) | (($block[0] & 0x10000000) >> 12) |
(($block[1] & 0x00000004) << 13) | (($block[1] & 0x00000400) << 4) |
(($block[1] & 0x00040000) >> 5) | (($block[1] & 0x04000000) >> 14) |
(($block[0] & 0x00000004) << 9) | ( $block[0] & 0x00000400 ) |
(($block[0] & 0x00040000) >> 9) | (($block[0] & 0x04000000) >> 18) |
(($block[1] & 0x00010000) >> 11) | (($block[1] & 0x01000000) >> 20) |
(($block[0] & 0x00010000) >> 15) | (($block[0] & 0x01000000) >> 24)
,
(($block[1] & 0x00000080) << 24) | (($block[1] & 0x00008000) << 15) |
(($block[1] & 0x00800002) << 6) | (($block[0] & 0x00000080) << 20) |
(($block[0] & 0x00008000) << 11) | (($block[0] & 0x00800002) << 2) |
(($block[1] & 0x00000020) << 18) | (($block[1] & 0x00002000) << 9) |
( $block[1] & 0x00200000 ) | (($block[1] & 0x20000000) >> 9) |
(($block[0] & 0x00000020) << 14) | (($block[0] & 0x00002000) << 5) |
(($block[0] & 0x00200000) >> 4) | (($block[0] & 0x20000000) >> 13) |
(($block[1] & 0x00000008) << 12) | (($block[1] & 0x00000800) << 3) |
(($block[1] & 0x00080000) >> 6) | (($block[1] & 0x08000000) >> 15) |
(($block[0] & 0x00000008) << 8) | (($block[0] & 0x00000800) >> 1) |
(($block[0] & 0x00080000) >> 10) | (($block[0] & 0x08000000) >> 19) |
(($block[1] & 0x00000200) >> 3) | (($block[0] & 0x00000200) >> 7) |
(($block[1] & 0x00020000) >> 12) | (($block[1] & 0x02000000) >> 21) |
(($block[0] & 0x00020000) >> 16) | (($block[0] & 0x02000000) >> 25) |
($msb[1] << 28) | ($msb[0] << 24)
);
for ($i = 0; $i < 16; $i++) {
// start of "the Feistel (F) function" - see the following URL:
// http://en.wikipedia.org/wiki/Image:Data_Encryption_Standard_InfoBox_Diagram.png
$temp = (($sbox[0][((($block[1] >> 27) & 0x1F) | (($block[1] & 1) << 5)) ^ $keys[$mode][$i][0]]) << 28)
| (($sbox[1][(($block[1] & 0x1F800000) >> 23) ^ $keys[$mode][$i][1]]) << 24)
| (($sbox[2][(($block[1] & 0x01F80000) >> 19) ^ $keys[$mode][$i][2]]) << 20)
| (($sbox[3][(($block[1] & 0x001F8000) >> 15) ^ $keys[$mode][$i][3]]) << 16)
| (($sbox[4][(($block[1] & 0x0001F800) >> 11) ^ $keys[$mode][$i][4]]) << 12)
| (($sbox[5][(($block[1] & 0x00001F80) >> 7) ^ $keys[$mode][$i][5]]) << 8)
| (($sbox[6][(($block[1] & 0x000001F8) >> 3) ^ $keys[$mode][$i][6]]) << 4)
| ( $sbox[7][((($block[1] & 0x1F) << 1) | (($block[1] >> 31) & 1)) ^ $keys[$mode][$i][7]]);
$msb = ($temp >> 31) & 1;
$temp &= 0x7FFFFFFF;
$newBlock = (($temp & 0x00010000) << 15) | (($temp & 0x02020120) << 5)
| (($temp & 0x00001800) << 17) | (($temp & 0x01000000) >> 10)
| (($temp & 0x00000008) << 24) | (($temp & 0x00100000) << 6)
| (($temp & 0x00000010) << 21) | (($temp & 0x00008000) << 9)
| (($temp & 0x00000200) << 12) | (($temp & 0x10000000) >> 27)
| (($temp & 0x00000040) << 14) | (($temp & 0x08000000) >> 8)
| (($temp & 0x00004000) << 4) | (($temp & 0x00000002) << 16)
| (($temp & 0x00442000) >> 6) | (($temp & 0x40800000) >> 15)
| (($temp & 0x00000001) << 11) | (($temp & 0x20000000) >> 20)
| (($temp & 0x00080000) >> 13) | (($temp & 0x00000004) << 3)
| (($temp & 0x04000000) >> 22) | (($temp & 0x00000480) >> 7)
| (($temp & 0x00200000) >> 19) | ($msb << 23);
// end of "the Feistel (F) function" - $newBlock is F's output
$temp = $block[1];
$block[1] = $block[0] ^ $newBlock;
$block[0] = $temp;
}
$msb = array(
($block[0] >> 31) & 1,
($block[1] >> 31) & 1
);
$block[0] &= 0x7FFFFFFF;
$block[1] &= 0x7FFFFFFF;
$block = array(
(($block[0] & 0x01000004) << 7) | (($block[1] & 0x01000004) << 6) |
(($block[0] & 0x00010000) << 13) | (($block[1] & 0x00010000) << 12) |
(($block[0] & 0x00000100) << 19) | (($block[1] & 0x00000100) << 18) |
(($block[0] & 0x00000001) << 25) | (($block[1] & 0x00000001) << 24) |
(($block[0] & 0x02000008) >> 2) | (($block[1] & 0x02000008) >> 3) |
(($block[0] & 0x00020000) << 4) | (($block[1] & 0x00020000) << 3) |
(($block[0] & 0x00000200) << 10) | (($block[1] & 0x00000200) << 9) |
(($block[0] & 0x00000002) << 16) | (($block[1] & 0x00000002) << 15) |
(($block[0] & 0x04000000) >> 11) | (($block[1] & 0x04000000) >> 12) |
(($block[0] & 0x00040000) >> 5) | (($block[1] & 0x00040000) >> 6) |
(($block[0] & 0x00000400) << 1) | ( $block[1] & 0x00000400 ) |
(($block[0] & 0x08000000) >> 20) | (($block[1] & 0x08000000) >> 21) |
(($block[0] & 0x00080000) >> 14) | (($block[1] & 0x00080000) >> 15) |
(($block[0] & 0x00000800) >> 8) | (($block[1] & 0x00000800) >> 9)
,
(($block[0] & 0x10000040) << 3) | (($block[1] & 0x10000040) << 2) |
(($block[0] & 0x00100000) << 9) | (($block[1] & 0x00100000) << 8) |
(($block[0] & 0x00001000) << 15) | (($block[1] & 0x00001000) << 14) |
(($block[0] & 0x00000010) << 21) | (($block[1] & 0x00000010) << 20) |
(($block[0] & 0x20000080) >> 6) | (($block[1] & 0x20000080) >> 7) |
( $block[0] & 0x00200000 ) | (($block[1] & 0x00200000) >> 1) |
(($block[0] & 0x00002000) << 6) | (($block[1] & 0x00002000) << 5) |
(($block[0] & 0x00000020) << 12) | (($block[1] & 0x00000020) << 11) |
(($block[0] & 0x40000000) >> 15) | (($block[1] & 0x40000000) >> 16) |
(($block[0] & 0x00400000) >> 9) | (($block[1] & 0x00400000) >> 10) |
(($block[0] & 0x00004000) >> 3) | (($block[1] & 0x00004000) >> 4) |
(($block[0] & 0x00800000) >> 18) | (($block[1] & 0x00800000) >> 19) |
(($block[0] & 0x00008000) >> 12) | (($block[1] & 0x00008000) >> 13) |
($msb[0] << 7) | ($msb[1] << 6)
);
return pack('NN', $block[0], $block[1]);
}
/**
* Creates the key schedule.
*
* @access private
* @param String $key
* @return Array
*/
function _prepareKey($key)
{
static $shifts = array( // number of key bits shifted per round
1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1
);
// pad the key and remove extra characters as appropriate.
$key = str_pad(substr($key, 0, 8), 8, chr(0));
$temp = unpack('Na/Nb', $key);
$key = array($temp['a'], $temp['b']);
$msb = array(
($key[0] >> 31) & 1,
($key[1] >> 31) & 1
);
$key[0] &= 0x7FFFFFFF;
$key[1] &= 0x7FFFFFFF;
$key = array(
(($key[1] & 0x00000002) << 26) | (($key[1] & 0x00000204) << 17) |
(($key[1] & 0x00020408) << 8) | (($key[1] & 0x02040800) >> 1) |
(($key[0] & 0x00000002) << 22) | (($key[0] & 0x00000204) << 13) |
(($key[0] & 0x00020408) << 4) | (($key[0] & 0x02040800) >> 5) |
(($key[1] & 0x04080000) >> 10) | (($key[0] & 0x04080000) >> 14) |
(($key[1] & 0x08000000) >> 19) | (($key[0] & 0x08000000) >> 23) |
(($key[0] & 0x00000010) >> 1) | (($key[0] & 0x00001000) >> 10) |
(($key[0] & 0x00100000) >> 19) | (($key[0] & 0x10000000) >> 28)
,
(($key[1] & 0x00000080) << 20) | (($key[1] & 0x00008000) << 11) |
(($key[1] & 0x00800000) << 2) | (($key[0] & 0x00000080) << 16) |
(($key[0] & 0x00008000) << 7) | (($key[0] & 0x00800000) >> 2) |
(($key[1] & 0x00000040) << 13) | (($key[1] & 0x00004000) << 4) |
(($key[1] & 0x00400000) >> 5) | (($key[1] & 0x40000000) >> 14) |
(($key[0] & 0x00000040) << 9) | ( $key[0] & 0x00004000 ) |
(($key[0] & 0x00400000) >> 9) | (($key[0] & 0x40000000) >> 18) |
(($key[1] & 0x00000020) << 6) | (($key[1] & 0x00002000) >> 3) |
(($key[1] & 0x00200000) >> 12) | (($key[1] & 0x20000000) >> 21) |
(($key[0] & 0x00000020) << 2) | (($key[0] & 0x00002000) >> 7) |
(($key[0] & 0x00200000) >> 16) | (($key[0] & 0x20000000) >> 25) |
(($key[1] & 0x00000010) >> 1) | (($key[1] & 0x00001000) >> 10) |
(($key[1] & 0x00100000) >> 19) | (($key[1] & 0x10000000) >> 28) |
($msb[1] << 24) | ($msb[0] << 20)
);
$keys = array();
for ($i = 0; $i < 16; $i++) {
$key[0] <<= $shifts[$i];
$temp = ($key[0] & 0xF0000000) >> 28;
$key[0] = ($key[0] | $temp) & 0x0FFFFFFF;
$key[1] <<= $shifts[$i];
$temp = ($key[1] & 0xF0000000) >> 28;
$key[1] = ($key[1] | $temp) & 0x0FFFFFFF;
$temp = array(
(($key[1] & 0x00004000) >> 9) | (($key[1] & 0x00000800) >> 7) |
(($key[1] & 0x00020000) >> 14) | (($key[1] & 0x00000010) >> 2) |
(($key[1] & 0x08000000) >> 26) | (($key[1] & 0x00800000) >> 23)
,
(($key[1] & 0x02400000) >> 20) | (($key[1] & 0x00000001) << 4) |
(($key[1] & 0x00002000) >> 10) | (($key[1] & 0x00040000) >> 18) |
(($key[1] & 0x00000080) >> 6)
,
( $key[1] & 0x00000020 ) | (($key[1] & 0x00000200) >> 5) |
(($key[1] & 0x00010000) >> 13) | (($key[1] & 0x01000000) >> 22) |
(($key[1] & 0x00000004) >> 1) | (($key[1] & 0x00100000) >> 20)
,
(($key[1] & 0x00001000) >> 7) | (($key[1] & 0x00200000) >> 17) |
(($key[1] & 0x00000002) << 2) | (($key[1] & 0x00000100) >> 6) |
(($key[1] & 0x00008000) >> 14) | (($key[1] & 0x04000000) >> 26)
,
(($key[0] & 0x00008000) >> 10) | ( $key[0] & 0x00000010 ) |
(($key[0] & 0x02000000) >> 22) | (($key[0] & 0x00080000) >> 17) |
(($key[0] & 0x00000200) >> 8) | (($key[0] & 0x00000002) >> 1)
,
(($key[0] & 0x04000000) >> 21) | (($key[0] & 0x00010000) >> 12) |
(($key[0] & 0x00000020) >> 2) | (($key[0] & 0x00000800) >> 9) |
(($key[0] & 0x00800000) >> 22) | (($key[0] & 0x00000100) >> 8)
,
(($key[0] & 0x00001000) >> 7) | (($key[0] & 0x00000088) >> 3) |
(($key[0] & 0x00020000) >> 14) | (($key[0] & 0x00000001) << 2) |
(($key[0] & 0x00400000) >> 21)
,
(($key[0] & 0x00000400) >> 5) | (($key[0] & 0x00004000) >> 10) |
(($key[0] & 0x00000040) >> 3) | (($key[0] & 0x00100000) >> 18) |
(($key[0] & 0x08000000) >> 26) | (($key[0] & 0x01000000) >> 24)
);
$keys[] = $temp;
}
$temp = array(
CRYPT_DES_ENCRYPT => $keys,
CRYPT_DES_DECRYPT => array_reverse($keys)
);
return $temp;
}
}
// vim: ts=4:sw=4:et:
// vim6: fdl=1:

816
library/phpsec/Crypt/Hash.php
View file

@ -1,816 +0,0 @@
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Pure-PHP implementations of keyed-hash message authentication codes (HMACs) and various cryptographic hashing functions.
*
* Uses hash() or mhash() if available and an internal implementation, otherwise. Currently supports the following:
*
* md2, md5, md5-96, sha1, sha1-96, sha256, sha384, and sha512
*
* If {@link Crypt_Hash::setKey() setKey()} is called, {@link Crypt_Hash::hash() hash()} will return the HMAC as opposed to
* the hash. If no valid algorithm is provided, sha1 will be used.
*
* PHP versions 4 and 5
*
* {@internal The variable names are the same as those in
* {@link http://tools.ietf.org/html/rfc2104#section-2 RFC2104}.}}
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include('Crypt/Hash.php');
*
* $hash = new Crypt_Hash('sha1');
*
* $hash->setKey('abcdefg');
*
* echo base64_encode($hash->hash('abcdefg'));
* ?>
* </code>
*
* LICENSE: This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
* @category Crypt
* @package Crypt_Hash
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMVII Jim Wigginton
* @license http://www.gnu.org/licenses/lgpl.txt
* @version $Id: Hash.php,v 1.6 2009/11/23 23:37:07 terrafrost Exp $
* @link http://phpseclib.sourceforge.net
*/
/**#@+
* @access private
* @see Crypt_Hash::Crypt_Hash()
*/
/**
* Toggles the internal implementation
*/
define('CRYPT_HASH_MODE_INTERNAL', 1);
/**
* Toggles the mhash() implementation, which has been deprecated on PHP 5.3.0+.
*/
define('CRYPT_HASH_MODE_MHASH', 2);
/**
* Toggles the hash() implementation, which works on PHP 5.1.2+.
*/
define('CRYPT_HASH_MODE_HASH', 3);
/**#@-*/
/**
* Pure-PHP implementations of keyed-hash message authentication codes (HMACs) and various cryptographic hashing functions.
*
* @author Jim Wigginton <terrafrost@php.net>
* @version 0.1.0
* @access public
* @package Crypt_Hash
*/
class Crypt_Hash {
/**
* Byte-length of compression blocks / key (Internal HMAC)
*
* @see Crypt_Hash::setAlgorithm()
* @var Integer
* @access private
*/
var $b;
/**
* Byte-length of hash output (Internal HMAC)
*
* @see Crypt_Hash::setHash()
* @var Integer
* @access private
*/
var $l = false;
/**
* Hash Algorithm
*
* @see Crypt_Hash::setHash()
* @var String
* @access private
*/
var $hash;
/**
* Key
*
* @see Crypt_Hash::setKey()
* @var String
* @access private
*/
var $key = '';
/**
* Outer XOR (Internal HMAC)
*
* @see Crypt_Hash::setKey()
* @var String
* @access private
*/
var $opad;
/**
* Inner XOR (Internal HMAC)
*
* @see Crypt_Hash::setKey()
* @var String
* @access private
*/
var $ipad;
/**
* Default Constructor.
*
* @param optional String $hash
* @return Crypt_Hash
* @access public
*/
function Crypt_Hash($hash = 'sha1')
{
if ( !defined('CRYPT_HASH_MODE') ) {
switch (true) {
case extension_loaded('hash'):
define('CRYPT_HASH_MODE', CRYPT_HASH_MODE_HASH);
break;
case extension_loaded('mhash'):
define('CRYPT_HASH_MODE', CRYPT_HASH_MODE_MHASH);
break;
default:
define('CRYPT_HASH_MODE', CRYPT_HASH_MODE_INTERNAL);
}
}
$this->setHash($hash);
}
/**
* Sets the key for HMACs
*
* Keys can be of any length.
*
* @access public
* @param String $key
*/
function setKey($key)
{
$this->key = $key;
}
/**
* Sets the hash function.
*
* @access public
* @param String $hash
*/
function setHash($hash)
{
switch ($hash) {
case 'md5-96':
case 'sha1-96':
$this->l = 12; // 96 / 8 = 12
break;
case 'md2':
case 'md5':
$this->l = 16;
break;
case 'sha1':
$this->l = 20;
break;
case 'sha256':
$this->l = 32;
break;
case 'sha384':
$this->l = 48;
break;
case 'sha512':
$this->l = 64;
}
switch ($hash) {
case 'md2':
$mode = CRYPT_HASH_MODE_INTERNAL;
break;
case 'sha384':
case 'sha512':
$mode = CRYPT_HASH_MODE == CRYPT_HASH_MODE_MHASH ? CRYPT_HASH_MODE_INTERNAL : CRYPT_HASH_MODE;
break;
default:
$mode = CRYPT_HASH_MODE;
}
switch ( $mode ) {
case CRYPT_HASH_MODE_MHASH:
switch ($hash) {
case 'md5':
case 'md5-96':
$this->hash = MHASH_MD5;
break;
case 'sha256':
$this->hash = MHASH_SHA256;
break;
case 'sha1':
case 'sha1-96':
default:
$this->hash = MHASH_SHA1;
}
return;
case CRYPT_HASH_MODE_HASH:
switch ($hash) {
case 'md5':
case 'md5-96':
$this->hash = 'md5';
return;
case 'sha256':
case 'sha384':
case 'sha512':
$this->hash = $hash;
return;
case 'sha1':
case 'sha1-96':
default:
$this->hash = 'sha1';
}
return;
}
switch ($hash) {
case 'md2':
$this->b = 16;
$this->hash = array($this, '_md2');
break;
case 'md5':
case 'md5-96':
$this->b = 64;
$this->hash = array($this, '_md5');
break;
case 'sha256':
$this->b = 64;
$this->hash = array($this, '_sha256');
break;
case 'sha384':
case 'sha512':
$this->b = 128;
$this->hash = array($this, '_sha512');
break;
case 'sha1':
case 'sha1-96':
default:
$this->b = 64;
$this->hash = array($this, '_sha1');
}
$this->ipad = str_repeat(chr(0x36), $this->b);
$this->opad = str_repeat(chr(0x5C), $this->b);
}
/**
* Compute the HMAC.
*
* @access public
* @param String $text
* @return String
*/
function hash($text)
{
$mode = is_array($this->hash) ? CRYPT_HASH_MODE_INTERNAL : CRYPT_HASH_MODE;
if (!empty($this->key)) {
switch ( $mode ) {
case CRYPT_HASH_MODE_MHASH:
$output = mhash($this->hash, $text, $this->key);
break;
case CRYPT_HASH_MODE_HASH:
$output = hash_hmac($this->hash, $text, $this->key, true);
break;
case CRYPT_HASH_MODE_INTERNAL:
/* "Applications that use keys longer than B bytes will first hash the key using H and then use the
resultant L byte string as the actual key to HMAC."
-- http://tools.ietf.org/html/rfc2104#section-2 */
$key = strlen($this->key) > $this->b ? call_user_func($this->$hash, $this->key) : $this->key;
$key = str_pad($key, $this->b, chr(0)); // step 1
$temp = $this->ipad ^ $key; // step 2
$temp .= $text; // step 3
$temp = call_user_func($this->hash, $temp); // step 4
$output = $this->opad ^ $key; // step 5
$output.= $temp; // step 6
$output = call_user_func($this->hash, $output); // step 7
}
} else {
switch ( $mode ) {
case CRYPT_HASH_MODE_MHASH:
$output = mhash($this->hash, $text);
break;
case CRYPT_HASH_MODE_HASH:
$output = hash($this->hash, $text, true);
break;
case CRYPT_HASH_MODE_INTERNAL:
$output = call_user_func($this->hash, $text);
}
}
return substr($output, 0, $this->l);
}
/**
* Returns the hash length (in bytes)
*
* @access private
* @return Integer
*/
function getLength()
{
return $this->l;
}
/**
* Wrapper for MD5
*
* @access private
* @param String $text
*/
function _md5($m)
{
return pack('H*', md5($m));
}
/**
* Wrapper for SHA1
*
* @access private
* @param String $text
*/
function _sha1($m)
{
return pack('H*', sha1($m));
}
/**
* Pure-PHP implementation of MD2
*
* See {@link http://tools.ietf.org/html/rfc1319 RFC1319}.
*
* @access private
* @param String $text
*/
function _md2($m)
{
static $s = array(
41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6,
19, 98, 167, 5, 243, 192, 199, 115, 140, 152, 147, 43, 217, 188,
76, 130, 202, 30, 155, 87, 60, 253, 212, 224, 22, 103, 66, 111, 24,
138, 23, 229, 18, 190, 78, 196, 214, 218, 158, 222, 73, 160, 251,
245, 142, 187, 47, 238, 122, 169, 104, 121, 145, 21, 178, 7, 63,
148, 194, 16, 137, 11, 34, 95, 33, 128, 127, 93, 154, 90, 144, 50,
39, 53, 62, 204, 231, 191, 247, 151, 3, 255, 25, 48, 179, 72, 165,
181, 209, 215, 94, 146, 42, 172, 86, 170, 198, 79, 184, 56, 210,
150, 164, 125, 182, 118, 252, 107, 226, 156, 116, 4, 241, 69, 157,
112, 89, 100, 113, 135, 32, 134, 91, 207, 101, 230, 45, 168, 2, 27,
96, 37, 173, 174, 176, 185, 246, 28, 70, 97, 105, 52, 64, 126, 15,
85, 71, 163, 35, 221, 81, 175, 58, 195, 92, 249, 206, 186, 197,
234, 38, 44, 83, 13, 110, 133, 40, 132, 9, 211, 223, 205, 244, 65,
129, 77, 82, 106, 220, 55, 200, 108, 193, 171, 250, 36, 225, 123,
8, 12, 189, 177, 74, 120, 136, 149, 139, 227, 99, 232, 109, 233,
203, 213, 254, 59, 0, 29, 57, 242, 239, 183, 14, 102, 88, 208, 228,
166, 119, 114, 248, 235, 117, 75, 10, 49, 68, 80, 180, 143, 237,
31, 26, 219, 153, 141, 51, 159, 17, 131, 20
);
// Step 1. Append Padding Bytes
$pad = 16 - (strlen($m) & 0xF);
$m.= str_repeat(chr($pad), $pad);
$length = strlen($m);
// Step 2. Append Checksum
$c = str_repeat(chr(0), 16);
$l = chr(0);
for ($i = 0; $i < $length; $i+= 16) {
for ($j = 0; $j < 16; $j++) {
$c[$j] = chr($s[ord($m[$i + $j] ^ $l)]);
$l = $c[$j];
}
}
$m.= $c;
$length+= 16;
// Step 3. Initialize MD Buffer
$x = str_repeat(chr(0), 48);
// Step 4. Process Message in 16-Byte Blocks
for ($i = 0; $i < $length; $i+= 16) {
for ($j = 0; $j < 16; $j++) {
$x[$j + 16] = $m[$i + $j];
$x[$j + 32] = $x[$j + 16] ^ $x[$j];
}
$t = chr(0);
for ($j = 0; $j < 18; $j++) {
for ($k = 0; $k < 48; $k++) {
$x[$k] = $t = $x[$k] ^ chr($s[ord($t)]);
//$t = $x[$k] = $x[$k] ^ chr($s[ord($t)]);
}
$t = chr(ord($t) + $j);
}
}
// Step 5. Output
return substr($x, 0, 16);
}
/**
* Pure-PHP implementation of SHA256
*
* See {@link http://en.wikipedia.org/wiki/SHA_hash_functions#SHA-256_.28a_SHA-2_variant.29_pseudocode SHA-256 (a SHA-2 variant) pseudocode - Wikipedia}.
*
* @access private
* @param String $text
*/
function _sha256($m)
{
if (extension_loaded('suhosin')) {
return pack('H*', sha256($m));
}
// Initialize variables
$hash = array(
0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
);
// Initialize table of round constants
// (first 32 bits of the fractional parts of the cube roots of the first 64 primes 2..311)
static $k = array(
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
);
// Pre-processing
$length = strlen($m);
// to round to nearest 56 mod 64, we'll add 64 - (length + (64 - 56)) % 64
$m.= str_repeat(chr(0), 64 - (($length + 8) & 0x3F));
$m[$length] = chr(0x80);
// we don't support hashing strings 512MB long
$m.= pack('N2', 0, $length << 3);
// Process the message in successive 512-bit chunks
$chunks = str_split($m, 64);
foreach ($chunks as $chunk) {
$w = array();
for ($i = 0; $i < 16; $i++) {
extract(unpack('Ntemp', $this->_string_shift($chunk, 4)));
$w[] = $temp;
}
// Extend the sixteen 32-bit words into sixty-four 32-bit words
for ($i = 16; $i < 64; $i++) {
$s0 = $this->_rightRotate($w[$i - 15], 7) ^
$this->_rightRotate($w[$i - 15], 18) ^
$this->_rightShift( $w[$i - 15], 3);
$s1 = $this->_rightRotate($w[$i - 2], 17) ^
$this->_rightRotate($w[$i - 2], 19) ^
$this->_rightShift( $w[$i - 2], 10);
$w[$i] = $this->_add($w[$i - 16], $s0, $w[$i - 7], $s1);
}
// Initialize hash value for this chunk
list($a, $b, $c, $d, $e, $f, $g, $h) = $hash;
// Main loop
for ($i = 0; $i < 64; $i++) {
$s0 = $this->_rightRotate($a, 2) ^
$this->_rightRotate($a, 13) ^
$this->_rightRotate($a, 22);
$maj = ($a & $b) ^
($a & $c) ^
($b & $c);
$t2 = $this->_add($s0, $maj);
$s1 = $this->_rightRotate($e, 6) ^
$this->_rightRotate($e, 11) ^
$this->_rightRotate($e, 25);
$ch = ($e & $f) ^
($this->_not($e) & $g);
$t1 = $this->_add($h, $s1, $ch, $k[$i], $w[$i]);
$h = $g;
$g = $f;
$f = $e;
$e = $this->_add($d, $t1);
$d = $c;
$c = $b;
$b = $a;
$a = $this->_add($t1, $t2);
}
// Add this chunk's hash to result so far
$hash = array(
$this->_add($hash[0], $a),
$this->_add($hash[1], $b),
$this->_add($hash[2], $c),
$this->_add($hash[3], $d),
$this->_add($hash[4], $e),
$this->_add($hash[5], $f),
$this->_add($hash[6], $g),
$this->_add($hash[7], $h)
);
}
// Produce the final hash value (big-endian)
return pack('N8', $hash[0], $hash[1], $hash[2], $hash[3], $hash[4], $hash[5], $hash[6], $hash[7]);
}
/**
* Pure-PHP implementation of SHA384 and SHA512
*
* @access private
* @param String $text
*/
function _sha512($m)
{
if (!class_exists('Math_BigInteger')) {
require_once('Math/BigInteger.php');
}
static $init384, $init512, $k;
if (!isset($k)) {
// Initialize variables
$init384 = array( // initial values for SHA384
'cbbb9d5dc1059ed8', '629a292a367cd507', '9159015a3070dd17', '152fecd8f70e5939',
'67332667ffc00b31', '8eb44a8768581511', 'db0c2e0d64f98fa7', '47b5481dbefa4fa4'
);
$init512 = array( // initial values for SHA512
'6a09e667f3bcc908', 'bb67ae8584caa73b', '3c6ef372fe94f82b', 'a54ff53a5f1d36f1',
'510e527fade682d1', '9b05688c2b3e6c1f', '1f83d9abfb41bd6b', '5be0cd19137e2179'
);
for ($i = 0; $i < 8; $i++) {
$init384[$i] = new Math_BigInteger($init384[$i], 16);
$init384[$i]->setPrecision(64);
$init512[$i] = new Math_BigInteger($init512[$i], 16);
$init512[$i]->setPrecision(64);
}
// Initialize table of round constants
// (first 64 bits of the fractional parts of the cube roots of the first 80 primes 2..409)
$k = array(
'428a2f98d728ae22', '7137449123ef65cd', 'b5c0fbcfec4d3b2f', 'e9b5dba58189dbbc',
'3956c25bf348b538', '59f111f1b605d019', '923f82a4af194f9b', 'ab1c5ed5da6d8118',
'd807aa98a3030242', '12835b0145706fbe', '243185be4ee4b28c', '550c7dc3d5ffb4e2',
'72be5d74f27b896f', '80deb1fe3b1696b1', '9bdc06a725c71235', 'c19bf174cf692694',
'e49b69c19ef14ad2', 'efbe4786384f25e3', '0fc19dc68b8cd5b5', '240ca1cc77ac9c65',
'2de92c6f592b0275', '4a7484aa6ea6e483', '5cb0a9dcbd41fbd4', '76f988da831153b5',
'983e5152ee66dfab', 'a831c66d2db43210', 'b00327c898fb213f', 'bf597fc7beef0ee4',
'c6e00bf33da88fc2', 'd5a79147930aa725', '06ca6351e003826f', '142929670a0e6e70',
'27b70a8546d22ffc', '2e1b21385c26c926', '4d2c6dfc5ac42aed', '53380d139d95b3df',
'650a73548baf63de', '766a0abb3c77b2a8', '81c2c92e47edaee6', '92722c851482353b',
'a2bfe8a14cf10364', 'a81a664bbc423001', 'c24b8b70d0f89791', 'c76c51a30654be30',
'd192e819d6ef5218', 'd69906245565a910', 'f40e35855771202a', '106aa07032bbd1b8',
'19a4c116b8d2d0c8', '1e376c085141ab53', '2748774cdf8eeb99', '34b0bcb5e19b48a8',
'391c0cb3c5c95a63', '4ed8aa4ae3418acb', '5b9cca4f7763e373', '682e6ff3d6b2b8a3',
'748f82ee5defb2fc', '78a5636f43172f60', '84c87814a1f0ab72', '8cc702081a6439ec',
'90befffa23631e28', 'a4506cebde82bde9', 'bef9a3f7b2c67915', 'c67178f2e372532b',
'ca273eceea26619c', 'd186b8c721c0c207', 'eada7dd6cde0eb1e', 'f57d4f7fee6ed178',
'06f067aa72176fba', '0a637dc5a2c898a6', '113f9804bef90dae', '1b710b35131c471b',
'28db77f523047d84', '32caab7b40c72493', '3c9ebe0a15c9bebc', '431d67c49c100d4c',
'4cc5d4becb3e42b6', '597f299cfc657e2a', '5fcb6fab3ad6faec', '6c44198c4a475817'
);
for ($i = 0; $i < 80; $i++) {
$k[$i] = new Math_BigInteger($k[$i], 16);
}
}
$hash = $this->l == 48 ? $init384 : $init512;
// Pre-processing
$length = strlen($m);
// to round to nearest 112 mod 128, we'll add 128 - (length + (128 - 112)) % 128
$m.= str_repeat(chr(0), 128 - (($length + 16) & 0x7F));
$m[$length] = chr(0x80);
// we don't support hashing strings 512MB long
$m.= pack('N4', 0, 0, 0, $length << 3);
// Process the message in successive 1024-bit chunks
$chunks = str_split($m, 128);
foreach ($chunks as $chunk) {
$w = array();
for ($i = 0; $i < 16; $i++) {
$temp = new Math_BigInteger($this->_string_shift($chunk, 8), 256);
$temp->setPrecision(64);
$w[] = $temp;
}
// Extend the sixteen 32-bit words into eighty 32-bit words
for ($i = 16; $i < 80; $i++) {
$temp = array(
$w[$i - 15]->bitwise_rightRotate(1),
$w[$i - 15]->bitwise_rightRotate(8),
$w[$i - 15]->bitwise_rightShift(7)
);
$s0 = $temp[0]->bitwise_xor($temp[1]);
$s0 = $s0->bitwise_xor($temp[2]);
$temp = array(
$w[$i - 2]->bitwise_rightRotate(19),
$w[$i - 2]->bitwise_rightRotate(61),
$w[$i - 2]->bitwise_rightShift(6)
);
$s1 = $temp[0]->bitwise_xor($temp[1]);
$s1 = $s1->bitwise_xor($temp[2]);
$w[$i] = $w[$i - 16]->copy();
$w[$i] = $w[$i]->add($s0);
$w[$i] = $w[$i]->add($w[$i - 7]);
$w[$i] = $w[$i]->add($s1);
}
// Initialize hash value for this chunk
$a = $hash[0]->copy();
$b = $hash[1]->copy();
$c = $hash[2]->copy();
$d = $hash[3]->copy();
$e = $hash[4]->copy();
$f = $hash[5]->copy();
$g = $hash[6]->copy();
$h = $hash[7]->copy();
// Main loop
for ($i = 0; $i < 80; $i++) {
$temp = array(
$a->bitwise_rightRotate(28),
$a->bitwise_rightRotate(34),
$a->bitwise_rightRotate(39)
);
$s0 = $temp[0]->bitwise_xor($temp[1]);
$s0 = $s0->bitwise_xor($temp[2]);
$temp = array(
$a->bitwise_and($b),
$a->bitwise_and($c),
$b->bitwise_and($c)
);
$maj = $temp[0]->bitwise_xor($temp[1]);
$maj = $maj->bitwise_xor($temp[2]);
$t2 = $s0->add($maj);
$temp = array(
$e->bitwise_rightRotate(14),
$e->bitwise_rightRotate(18),
$e->bitwise_rightRotate(41)
);
$s1 = $temp[0]->bitwise_xor($temp[1]);
$s1 = $s1->bitwise_xor($temp[2]);
$temp = array(
$e->bitwise_and($f),
$g->bitwise_and($e->bitwise_not())
);
$ch = $temp[0]->bitwise_xor($temp[1]);
$t1 = $h->add($s1);
$t1 = $t1->add($ch);
$t1 = $t1->add($k[$i]);
$t1 = $t1->add($w[$i]);
$h = $g->copy();
$g = $f->copy();
$f = $e->copy();
$e = $d->add($t1);
$d = $c->copy();
$c = $b->copy();
$b = $a->copy();
$a = $t1->add($t2);
}
// Add this chunk's hash to result so far
$hash = array(
$hash[0]->add($a),
$hash[1]->add($b),
$hash[2]->add($c),
$hash[3]->add($d),
$hash[4]->add($e),
$hash[5]->add($f),
$hash[6]->add($g),
$hash[7]->add($h)
);
}
// Produce the final hash value (big-endian)
// (Crypt_Hash::hash() trims the output for hashes but not for HMACs. as such, we trim the output here)
$temp = $hash[0]->toBytes() . $hash[1]->toBytes() . $hash[2]->toBytes() . $hash[3]->toBytes() .
$hash[4]->toBytes() . $hash[5]->toBytes();
if ($this->l != 48) {
$temp.= $hash[6]->toBytes() . $hash[7]->toBytes();
}
return $temp;
}
/**
* Right Rotate
*
* @access private
* @param Integer $int
* @param Integer $amt
* @see _sha256()
* @return Integer
*/
function _rightRotate($int, $amt)
{
$invamt = 32 - $amt;
$mask = (1 << $invamt) - 1;
return (($int << $invamt) & 0xFFFFFFFF) | (($int >> $amt) & $mask);
}
/**
* Right Shift
*
* @access private
* @param Integer $int
* @param Integer $amt
* @see _sha256()
* @return Integer
*/
function _rightShift($int, $amt)
{
$mask = (1 << (32 - $amt)) - 1;
return ($int >> $amt) & $mask;
}
/**
* Not
*
* @access private
* @param Integer $int
* @see _sha256()
* @return Integer
*/
function _not($int)
{
return ~$int & 0xFFFFFFFF;
}
/**
* Add
*
* _sha256() adds multiple unsigned 32-bit integers. Since PHP doesn't support unsigned integers and since the
* possibility of overflow exists, care has to be taken. Math_BigInteger() could be used but this should be faster.
*
* @param String $string
* @param optional Integer $index
* @return String
* @see _sha256()
* @access private
*/
function _add()
{
static $mod;
if (!isset($mod)) {
$mod = pow(2, 32);
}
$result = 0;
$arguments = func_get_args();
foreach ($arguments as $argument) {
$result+= $argument < 0 ? ($argument & 0x7FFFFFFF) + 0x80000000 : $argument;
}
return fmod($result, $mod);
}
/**
* String Shift
*
* Inspired by array_shift
*
* @param String $string
* @param optional Integer $index
* @return String
* @access private
*/
function _string_shift(&$string, $index = 1)
{
$substr = substr($string, 0, $index);
$string = substr($string, $index);
return $substr;
}
}

493
library/phpsec/Crypt/RC4.php
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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Pure-PHP implementation of RC4.
*
* Uses mcrypt, if available, and an internal implementation, otherwise.
*
* PHP versions 4 and 5
*
* Useful resources are as follows:
*
* - {@link http://www.mozilla.org/projects/security/pki/nss/draft-kaukonen-cipher-arcfour-03.txt ARCFOUR Algorithm}
* - {@link http://en.wikipedia.org/wiki/RC4 - Wikipedia: RC4}
*
* RC4 is also known as ARCFOUR or ARC4. The reason is elaborated upon at Wikipedia. This class is named RC4 and not
* ARCFOUR or ARC4 because RC4 is how it is refered to in the SSH1 specification.
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include('Crypt/RC4.php');
*
* $rc4 = new Crypt_RC4();
*
* $rc4->setKey('abcdefgh');
*
* $size = 10 * 1024;
* $plaintext = '';
* for ($i = 0; $i < $size; $i++) {
* $plaintext.= 'a';
* }
*
* echo $rc4->decrypt($rc4->encrypt($plaintext));
* ?>
* </code>
*
* LICENSE: This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
* @category Crypt
* @package Crypt_RC4
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMVII Jim Wigginton
* @license http://www.gnu.org/licenses/lgpl.txt
* @version $Id: RC4.php,v 1.8 2009/06/09 04:00:38 terrafrost Exp $
* @link http://phpseclib.sourceforge.net
*/
/**#@+
* @access private
* @see Crypt_RC4::Crypt_RC4()
*/
/**
* Toggles the internal implementation
*/
define('CRYPT_RC4_MODE_INTERNAL', 1);
/**
* Toggles the mcrypt implementation
*/
define('CRYPT_RC4_MODE_MCRYPT', 2);
/**#@-*/
/**#@+
* @access private
* @see Crypt_RC4::_crypt()
*/
define('CRYPT_RC4_ENCRYPT', 0);
define('CRYPT_RC4_DECRYPT', 1);
/**#@-*/
/**
* Pure-PHP implementation of RC4.
*
* @author Jim Wigginton <terrafrost@php.net>
* @version 0.1.0
* @access public
* @package Crypt_RC4
*/
class Crypt_RC4 {
/**
* The Key
*
* @see Crypt_RC4::setKey()
* @var String
* @access private
*/
var $key = "\0";
/**
* The Key Stream for encryption
*
* If CRYPT_RC4_MODE == CRYPT_RC4_MODE_MCRYPT, this will be equal to the mcrypt object
*
* @see Crypt_RC4::setKey()
* @var Array
* @access private
*/
var $encryptStream = false;
/**
* The Key Stream for decryption
*
* If CRYPT_RC4_MODE == CRYPT_RC4_MODE_MCRYPT, this will be equal to the mcrypt object
*
* @see Crypt_RC4::setKey()
* @var Array
* @access private
*/
var $decryptStream = false;
/**
* The $i and $j indexes for encryption
*
* @see Crypt_RC4::_crypt()
* @var Integer
* @access private
*/
var $encryptIndex = 0;
/**
* The $i and $j indexes for decryption
*
* @see Crypt_RC4::_crypt()
* @var Integer
* @access private
*/
var $decryptIndex = 0;
/**
* MCrypt parameters
*
* @see Crypt_RC4::setMCrypt()
* @var Array
* @access private
*/
var $mcrypt = array('', '');
/**
* The Encryption Algorithm
*
* Only used if CRYPT_RC4_MODE == CRYPT_RC4_MODE_MCRYPT. Only possible values are MCRYPT_RC4 or MCRYPT_ARCFOUR.
*
* @see Crypt_RC4::Crypt_RC4()
* @var Integer
* @access private
*/
var $mode;
/**
* Default Constructor.
*
* Determines whether or not the mcrypt extension should be used.
*
* @param optional Integer $mode
* @return Crypt_RC4
* @access public
*/
function Crypt_RC4()
{
if ( !defined('CRYPT_RC4_MODE') ) {
switch (true) {
case extension_loaded('mcrypt') && (defined('MCRYPT_ARCFOUR') || defined('MCRYPT_RC4')):
// i'd check to see if rc4 was supported, by doing in_array('arcfour', mcrypt_list_algorithms('')),
// but since that can be changed after the object has been created, there doesn't seem to be
// a lot of point...
define('CRYPT_RC4_MODE', CRYPT_RC4_MODE_MCRYPT);
break;
default:
define('CRYPT_RC4_MODE', CRYPT_RC4_MODE_INTERNAL);
}
}
switch ( CRYPT_RC4_MODE ) {
case CRYPT_RC4_MODE_MCRYPT:
switch (true) {
case defined('MCRYPT_ARCFOUR'):
$this->mode = MCRYPT_ARCFOUR;
break;
case defined('MCRYPT_RC4');
$this->mode = MCRYPT_RC4;
}
}
}
/**
* Sets the key.
*
* Keys can be between 1 and 256 bytes long. If they are longer then 256 bytes, the first 256 bytes will
* be used. If no key is explicitly set, it'll be assumed to be a single null byte.
*
* @access public
* @param String $key
*/
function setKey($key)
{
$this->key = $key;
if ( CRYPT_RC4_MODE == CRYPT_RC4_MODE_MCRYPT ) {
return;
}
$keyLength = strlen($key);
$keyStream = array();
for ($i = 0; $i < 256; $i++) {
$keyStream[$i] = $i;
}
$j = 0;
for ($i = 0; $i < 256; $i++) {
$j = ($j + $keyStream[$i] + ord($key[$i % $keyLength])) & 255;
$temp = $keyStream[$i];
$keyStream[$i] = $keyStream[$j];
$keyStream[$j] = $temp;
}
$this->encryptIndex = $this->decryptIndex = array(0, 0);
$this->encryptStream = $this->decryptStream = $keyStream;
}
/**
* Dummy function.
*
* Some protocols, such as WEP, prepend an "initialization vector" to the key, effectively creating a new key [1].
* If you need to use an initialization vector in this manner, feel free to prepend it to the key, yourself, before
* calling setKey().
*
* [1] WEP's initialization vectors (IV's) are used in a somewhat insecure way. Since, in that protocol,
* the IV's are relatively easy to predict, an attack described by
* {@link http://www.drizzle.com/~aboba/IEEE/rc4_ksaproc.pdf Scott Fluhrer, Itsik Mantin, and Adi Shamir}
* can be used to quickly guess at the rest of the key. The following links elaborate:
*
* {@link http://www.rsa.com/rsalabs/node.asp?id=2009 http://www.rsa.com/rsalabs/node.asp?id=2009}
* {@link http://en.wikipedia.org/wiki/Related_key_attack http://en.wikipedia.org/wiki/Related_key_attack}
*
* @param String $iv
* @see Crypt_RC4::setKey()
* @access public
*/
function setIV($iv)
{
}
/**
* Sets MCrypt parameters. (optional)
*
* If MCrypt is being used, empty strings will be used, unless otherwise specified.
*
* @link http://php.net/function.mcrypt-module-open#function.mcrypt-module-open
* @access public
* @param optional Integer $algorithm_directory
* @param optional Integer $mode_directory
*/
function setMCrypt($algorithm_directory = '', $mode_directory = '')
{
if ( CRYPT_RC4_MODE == CRYPT_RC4_MODE_MCRYPT ) {
$this->mcrypt = array($algorithm_directory, $mode_directory);
$this->_closeMCrypt();
}
}
/**
* Encrypts a message.
*
* @see Crypt_RC4::_crypt()
* @access public
* @param String $plaintext
*/
function encrypt($plaintext)
{
return $this->_crypt($plaintext, CRYPT_RC4_ENCRYPT);
}
/**
* Decrypts a message.
*
* $this->decrypt($this->encrypt($plaintext)) == $this->encrypt($this->encrypt($plaintext)).
* Atleast if the continuous buffer is disabled.
*
* @see Crypt_RC4::_crypt()
* @access public
* @param String $ciphertext
*/
function decrypt($ciphertext)
{
return $this->_crypt($ciphertext, CRYPT_RC4_DECRYPT);
}
/**
* Encrypts or decrypts a message.
*
* @see Crypt_RC4::encrypt()
* @see Crypt_RC4::decrypt()
* @access private
* @param String $text
* @param Integer $mode
*/
function _crypt($text, $mode)
{
if ( CRYPT_RC4_MODE == CRYPT_RC4_MODE_MCRYPT ) {
$keyStream = $mode == CRYPT_RC4_ENCRYPT ? 'encryptStream' : 'decryptStream';
if ($this->$keyStream === false) {
$this->$keyStream = mcrypt_module_open($this->mode, $this->mcrypt[0], MCRYPT_MODE_STREAM, $this->mcrypt[1]);
mcrypt_generic_init($this->$keyStream, $this->key, '');
} else if (!$this->continuousBuffer) {
mcrypt_generic_init($this->$keyStream, $this->key, '');
}
$newText = mcrypt_generic($this->$keyStream, $text);
if (!$this->continuousBuffer) {
mcrypt_generic_deinit($this->$keyStream);
}
return $newText;
}
if ($this->encryptStream === false) {
$this->setKey($this->key);
}
switch ($mode) {
case CRYPT_RC4_ENCRYPT:
$keyStream = $this->encryptStream;
list($i, $j) = $this->encryptIndex;
break;
case CRYPT_RC4_DECRYPT:
$keyStream = $this->decryptStream;
list($i, $j) = $this->decryptIndex;
}
$newText = '';
for ($k = 0; $k < strlen($text); $k++) {
$i = ($i + 1) & 255;
$j = ($j + $keyStream[$i]) & 255;
$temp = $keyStream[$i];
$keyStream[$i] = $keyStream[$j];
$keyStream[$j] = $temp;
$temp = $keyStream[($keyStream[$i] + $keyStream[$j]) & 255];
$newText.= chr(ord($text[$k]) ^ $temp);
}
if ($this->continuousBuffer) {
switch ($mode) {
case CRYPT_RC4_ENCRYPT:
$this->encryptStream = $keyStream;
$this->encryptIndex = array($i, $j);
break;
case CRYPT_RC4_DECRYPT:
$this->decryptStream = $keyStream;
$this->decryptIndex = array($i, $j);
}
}
return $newText;
}
/**
* Treat consecutive "packets" as if they are a continuous buffer.
*
* Say you have a 16-byte plaintext $plaintext. Using the default behavior, the two following code snippets
* will yield different outputs:
*
* <code>
* echo $rc4->encrypt(substr($plaintext, 0, 8));
* echo $rc4->encrypt(substr($plaintext, 8, 8));
* </code>
* <code>
* echo $rc4->encrypt($plaintext);
* </code>
*
* The solution is to enable the continuous buffer. Although this will resolve the above discrepancy, it creates
* another, as demonstrated with the following:
*
* <code>
* $rc4->encrypt(substr($plaintext, 0, 8));
* echo $rc4->decrypt($des->encrypt(substr($plaintext, 8, 8)));
* </code>
* <code>
* echo $rc4->decrypt($des->encrypt(substr($plaintext, 8, 8)));
* </code>
*
* With the continuous buffer disabled, these would yield the same output. With it enabled, they yield different
* outputs. The reason is due to the fact that the initialization vector's change after every encryption /
* decryption round when the continuous buffer is enabled. When it's disabled, they remain constant.
*
* Put another way, when the continuous buffer is enabled, the state of the Crypt_DES() object changes after each
* encryption / decryption round, whereas otherwise, it'd remain constant. For this reason, it's recommended that
* continuous buffers not be used. They do offer better security and are, in fact, sometimes required (SSH uses them),
* however, they are also less intuitive and more likely to cause you problems.
*
* @see Crypt_RC4::disableContinuousBuffer()
* @access public
*/
function enableContinuousBuffer()
{
$this->continuousBuffer = true;
}
/**
* Treat consecutive packets as if they are a discontinuous buffer.
*
* The default behavior.
*
* @see Crypt_RC4::enableContinuousBuffer()
* @access public
*/
function disableContinuousBuffer()
{
if ( CRYPT_RC4_MODE == CRYPT_RC4_MODE_INTERNAL ) {
$this->encryptIndex = $this->decryptIndex = array(0, 0);
$this->setKey($this->key);
}
$this->continuousBuffer = false;
}
/**
* Dummy function.
*
* Since RC4 is a stream cipher and not a block cipher, no padding is necessary. The only reason this function is
* included is so that you can switch between a block cipher and a stream cipher transparently.
*
* @see Crypt_RC4::disablePadding()
* @access public
*/
function enablePadding()
{
}
/**
* Dummy function.
*
* @see Crypt_RC4::enablePadding()
* @access public
*/
function disablePadding()
{
}
/**
* Class destructor.
*
* Will be called, automatically, if you're using PHP5. If you're using PHP4, call it yourself. Only really
* needs to be called if mcrypt is being used.
*
* @access public
*/
function __destruct()
{
if ( CRYPT_RC4_MODE == CRYPT_RC4_MODE_MCRYPT ) {
$this->_closeMCrypt();
}
}
/**
* Properly close the MCrypt objects.
*
* @access prviate
*/
function _closeMCrypt()
{
if ( $this->encryptStream !== false ) {
if ( $this->continuousBuffer ) {
mcrypt_generic_deinit($this->encryptStream);
}
mcrypt_module_close($this->encryptStream);
$this->encryptStream = false;
}
if ( $this->decryptStream !== false ) {
if ( $this->continuousBuffer ) {
mcrypt_generic_deinit($this->decryptStream);
}
mcrypt_module_close($this->decryptStream);
$this->decryptStream = false;
}
}
}

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library/phpsec/Crypt/RSA.php
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library/phpsec/Crypt/Random.php
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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Random Number Generator
*
* PHP versions 4 and 5
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include('Crypt/Random.php');
*
* echo crypt_random();
* ?>
* </code>
*
* LICENSE: This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
* @category Crypt
* @package Crypt_Random
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMVII Jim Wigginton
* @license http://www.gnu.org/licenses/lgpl.txt
* @version $Id: Random.php,v 1.9 2010/04/24 06:40:48 terrafrost Exp $
* @link http://phpseclib.sourceforge.net
*/
/**
* Generate a random value.
*
* On 32-bit machines, the largest distance that can exist between $min and $max is 2**31.
* If $min and $max are farther apart than that then the last ($max - range) numbers.
*
* Depending on how this is being used, it may be worth while to write a replacement. For example,
* a PHP-based web app that stores its data in an SQL database can collect more entropy than this function
* can.
*
* @param optional Integer $min
* @param optional Integer $max
* @return Integer
* @access public
*/
function crypt_random($min = 0, $max = 0x7FFFFFFF)
{
if ($min == $max) {
return $min;
}
// see http://en.wikipedia.org/wiki//dev/random
// if open_basedir is enabled file_exists() will ouput an "open_basedir restriction in effect" warning,
// so we suppress it.
if (@file_exists('/dev/urandom')) {
static $fp;
if (!$fp) {
$fp = fopen('/dev/urandom', 'rb');
}
extract(unpack('Nrandom', fread($fp, 4)));
// say $min = 0 and $max = 3. if we didn't do abs() then we could have stuff like this:
// -4 % 3 + 0 = -1, even though -1 < $min
return abs($random) % ($max - $min) + $min;
}
/* Prior to PHP 4.2.0, mt_srand() had to be called before mt_rand() could be called.
Prior to PHP 5.2.6, mt_rand()'s automatic seeding was subpar, as elaborated here:
http://www.suspekt.org/2008/08/17/mt_srand-and-not-so-random-numbers/
The seeding routine is pretty much ripped from PHP's own internal GENERATE_SEED() macro:
http://svn.php.net/viewvc/php/php-src/branches/PHP_5_3_2/ext/standard/php_rand.h?view=markup */
if (version_compare(PHP_VERSION, '5.2.5', '<=')) {
static $seeded;
if (!isset($seeded)) {
$seeded = true;
mt_srand(fmod(time() * getmypid(), 0x7FFFFFFF) ^ fmod(1000000 * lcg_value(), 0x7FFFFFFF));
}
}
static $crypto;
// The CSPRNG's Yarrow and Fortuna periodically reseed. This function can be reseeded by hitting F5
// in the browser and reloading the page.
if (!isset($crypto)) {
$key = $iv = '';
for ($i = 0; $i < 8; $i++) {
$key.= pack('n', mt_rand(0, 0xFFFF));
$iv .= pack('n', mt_rand(0, 0xFFFF));
}
switch (true) {
case class_exists('Crypt_AES'):
$crypto = new Crypt_AES(CRYPT_AES_MODE_CTR);
break;
case class_exists('Crypt_TripleDES'):
$crypto = new Crypt_TripleDES(CRYPT_DES_MODE_CTR);
break;
case class_exists('Crypt_DES'):
$crypto = new Crypt_DES(CRYPT_DES_MODE_CTR);
break;
case class_exists('Crypt_RC4'):
$crypto = new Crypt_RC4();
break;
default:
extract(unpack('Nrandom', pack('H*', sha1(mt_rand(0, 0x7FFFFFFF)))));
return abs($random) % ($max - $min) + $min;
}
$crypto->setKey($key);
$crypto->setIV($iv);
$crypto->enableContinuousBuffer();
}
extract(unpack('Nrandom', $crypto->encrypt("\0\0\0\0")));
return abs($random) % ($max - $min) + $min;
}
?>

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library/phpsec/Crypt/Rijndael.php
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690
library/phpsec/Crypt/TripleDES.php
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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Pure-PHP implementation of Triple DES.
*
* Uses mcrypt, if available, and an internal implementation, otherwise. Operates in the EDE3 mode (encrypt-decrypt-encrypt).
*
* PHP versions 4 and 5
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include('Crypt/TripleDES.php');
*
* $des = new Crypt_TripleDES();
*
* $des->setKey('abcdefghijklmnopqrstuvwx');
*
* $size = 10 * 1024;
* $plaintext = '';
* for ($i = 0; $i < $size; $i++) {
* $plaintext.= 'a';
* }
*
* echo $des->decrypt($des->encrypt($plaintext));
* ?>
* </code>
*
* LICENSE: This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
* @category Crypt
* @package Crypt_TripleDES
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMVII Jim Wigginton
* @license http://www.gnu.org/licenses/lgpl.txt
* @version $Id: TripleDES.php,v 1.13 2010/02/26 03:40:25 terrafrost Exp $
* @link http://phpseclib.sourceforge.net
*/
/**
* Include Crypt_DES
*/
require_once 'DES.php';
/**
* Encrypt / decrypt using inner chaining
*
* Inner chaining is used by SSH-1 and is generally considered to be less secure then outer chaining (CRYPT_DES_MODE_CBC3).
*/
define('CRYPT_DES_MODE_3CBC', 3);
/**
* Encrypt / decrypt using outer chaining
*
* Outer chaining is used by SSH-2 and when the mode is set to CRYPT_DES_MODE_CBC.
*/
define('CRYPT_DES_MODE_CBC3', CRYPT_DES_MODE_CBC);
/**
* Pure-PHP implementation of Triple DES.
*
* @author Jim Wigginton <terrafrost@php.net>
* @version 0.1.0
* @access public
* @package Crypt_TerraDES
*/
class Crypt_TripleDES {
/**
* The Three Keys
*
* @see Crypt_TripleDES::setKey()
* @var String
* @access private
*/
var $key = "\0\0\0\0\0\0\0\0";
/**
* The Encryption Mode
*
* @see Crypt_TripleDES::Crypt_TripleDES()
* @var Integer
* @access private
*/
var $mode = CRYPT_DES_MODE_CBC;
/**
* Continuous Buffer status
*
* @see Crypt_TripleDES::enableContinuousBuffer()
* @var Boolean
* @access private
*/
var $continuousBuffer = false;
/**
* Padding status
*
* @see Crypt_TripleDES::enablePadding()
* @var Boolean
* @access private
*/
var $padding = true;
/**
* The Initialization Vector
*
* @see Crypt_TripleDES::setIV()
* @var String
* @access private
*/
var $iv = "\0\0\0\0\0\0\0\0";
/**
* A "sliding" Initialization Vector
*
* @see Crypt_TripleDES::enableContinuousBuffer()
* @var String
* @access private
*/
var $encryptIV = "\0\0\0\0\0\0\0\0";
/**
* A "sliding" Initialization Vector
*
* @see Crypt_TripleDES::enableContinuousBuffer()
* @var String
* @access private
*/
var $decryptIV = "\0\0\0\0\0\0\0\0";
/**
* The Crypt_DES objects
*
* @var Array
* @access private
*/
var $des;
/**
* mcrypt resource for encryption
*
* The mcrypt resource can be recreated every time something needs to be created or it can be created just once.
* Since mcrypt operates in continuous mode, by default, it'll need to be recreated when in non-continuous mode.
*
* @see Crypt_AES::encrypt()
* @var String
* @access private
*/
var $enmcrypt;
/**
* mcrypt resource for decryption
*
* The mcrypt resource can be recreated every time something needs to be created or it can be created just once.
* Since mcrypt operates in continuous mode, by default, it'll need to be recreated when in non-continuous mode.
*
* @see Crypt_AES::decrypt()
* @var String
* @access private
*/
var $demcrypt;
/**
* Does the (en|de)mcrypt resource need to be (re)initialized?
*
* @see setKey()
* @see setIV()
* @var Boolean
* @access private
*/
var $changed = true;
/**
* Default Constructor.
*
* Determines whether or not the mcrypt extension should be used. $mode should only, at present, be
* CRYPT_DES_MODE_ECB or CRYPT_DES_MODE_CBC. If not explictly set, CRYPT_DES_MODE_CBC will be used.
*
* @param optional Integer $mode
* @return Crypt_TripleDES
* @access public
*/
function Crypt_TripleDES($mode = CRYPT_DES_MODE_CBC)
{
if ( !defined('CRYPT_DES_MODE') ) {
switch (true) {
case extension_loaded('mcrypt'):
// i'd check to see if des was supported, by doing in_array('des', mcrypt_list_algorithms('')),
// but since that can be changed after the object has been created, there doesn't seem to be
// a lot of point...
define('CRYPT_DES_MODE', CRYPT_DES_MODE_MCRYPT);
break;
default:
define('CRYPT_DES_MODE', CRYPT_DES_MODE_INTERNAL);
}
}
if ( $mode == CRYPT_DES_MODE_3CBC ) {
$this->mode = CRYPT_DES_MODE_3CBC;
$this->des = array(
new Crypt_DES(CRYPT_DES_MODE_CBC),
new Crypt_DES(CRYPT_DES_MODE_CBC),
new Crypt_DES(CRYPT_DES_MODE_CBC)
);
// we're going to be doing the padding, ourselves, so disable it in the Crypt_DES objects
$this->des[0]->disablePadding();
$this->des[1]->disablePadding();
$this->des[2]->disablePadding();
return;
}
switch ( CRYPT_DES_MODE ) {
case CRYPT_DES_MODE_MCRYPT:
switch ($mode) {
case CRYPT_DES_MODE_ECB:
$this->mode = MCRYPT_MODE_ECB;
break;
case CRYPT_DES_MODE_CTR:
$this->mode = 'ctr';
break;
case CRYPT_DES_MODE_CBC:
default:
$this->mode = MCRYPT_MODE_CBC;
}
break;
default:
$this->des = array(
new Crypt_DES(CRYPT_DES_MODE_ECB),
new Crypt_DES(CRYPT_DES_MODE_ECB),
new Crypt_DES(CRYPT_DES_MODE_ECB)
);
// we're going to be doing the padding, ourselves, so disable it in the Crypt_DES objects
$this->des[0]->disablePadding();
$this->des[1]->disablePadding();
$this->des[2]->disablePadding();
switch ($mode) {
case CRYPT_DES_MODE_ECB:
case CRYPT_DES_MODE_CTR:
case CRYPT_DES_MODE_CBC:
$this->mode = $mode;
break;
default:
$this->mode = CRYPT_DES_MODE_CBC;
}
}
}
/**
* Sets the key.
*
* Keys can be of any length. Triple DES, itself, can use 128-bit (eg. strlen($key) == 16) or
* 192-bit (eg. strlen($key) == 24) keys. This function pads and truncates $key as appropriate.
*
* DES also requires that every eighth bit be a parity bit, however, we'll ignore that.
*
* If the key is not explicitly set, it'll be assumed to be all zero's.
*
* @access public
* @param String $key
*/
function setKey($key)
{
$length = strlen($key);
if ($length > 8) {
$key = str_pad($key, 24, chr(0));
// if $key is between 64 and 128-bits, use the first 64-bits as the last, per this:
// http://php.net/function.mcrypt-encrypt#47973
//$key = $length <= 16 ? substr_replace($key, substr($key, 0, 8), 16) : substr($key, 0, 24);
}
$this->key = $key;
switch (true) {
case CRYPT_DES_MODE == CRYPT_DES_MODE_INTERNAL:
case $this->mode == CRYPT_DES_MODE_3CBC:
$this->des[0]->setKey(substr($key, 0, 8));
$this->des[1]->setKey(substr($key, 8, 8));
$this->des[2]->setKey(substr($key, 16, 8));
}
$this->changed = true;
}
/**
* Sets the initialization vector. (optional)
*
* SetIV is not required when CRYPT_DES_MODE_ECB is being used. If not explictly set, it'll be assumed
* to be all zero's.
*
* @access public
* @param String $iv
*/
function setIV($iv)
{
$this->encryptIV = $this->decryptIV = $this->iv = str_pad(substr($iv, 0, 8), 8, chr(0));
if ($this->mode == CRYPT_DES_MODE_3CBC) {
$this->des[0]->setIV($iv);
$this->des[1]->setIV($iv);
$this->des[2]->setIV($iv);
}
$this->changed = true;
}
/**
* Generate CTR XOR encryption key
*
* Encrypt the output of this and XOR it against the ciphertext / plaintext to get the
* plaintext / ciphertext in CTR mode.
*
* @see Crypt_DES::decrypt()
* @see Crypt_DES::encrypt()
* @access public
* @param Integer $length
* @param String $iv
*/
function _generate_xor($length, &$iv)
{
$xor = '';
$num_blocks = ($length + 7) >> 3;
for ($i = 0; $i < $num_blocks; $i++) {
$xor.= $iv;
for ($j = 4; $j <= 8; $j+=4) {
$temp = substr($iv, -$j, 4);
switch ($temp) {
case "\xFF\xFF\xFF\xFF":
$iv = substr_replace($iv, "\x00\x00\x00\x00", -$j, 4);
break;
case "\x7F\xFF\xFF\xFF":
$iv = substr_replace($iv, "\x80\x00\x00\x00", -$j, 4);
break 2;
default:
extract(unpack('Ncount', $temp));
$iv = substr_replace($iv, pack('N', $count + 1), -$j, 4);
break 2;
}
}
}
return $xor;
}
/**
* Encrypts a message.
*
* @access public
* @param String $plaintext
*/
function encrypt($plaintext)
{
if ($this->mode != CRYPT_DES_MODE_CTR && $this->mode != 'ctr') {
$plaintext = $this->_pad($plaintext);
}
// if the key is smaller then 8, do what we'd normally do
if ($this->mode == CRYPT_DES_MODE_3CBC && strlen($this->key) > 8) {
$ciphertext = $this->des[2]->encrypt($this->des[1]->decrypt($this->des[0]->encrypt($plaintext)));
return $ciphertext;
}
if ( CRYPT_DES_MODE == CRYPT_DES_MODE_MCRYPT ) {
if ($this->changed) {
if (!isset($this->enmcrypt)) {
$this->enmcrypt = mcrypt_module_open(MCRYPT_3DES, '', $this->mode, '');
}
mcrypt_generic_init($this->enmcrypt, $this->key, $this->encryptIV);
$this->changed = false;
}
$ciphertext = mcrypt_generic($this->enmcrypt, $plaintext);
if (!$this->continuousBuffer) {
mcrypt_generic_init($this->enmcrypt, $this->key, $this->encryptIV);
}
return $ciphertext;
}
if (strlen($this->key) <= 8) {
$this->des[0]->mode = $this->mode;
return $this->des[0]->encrypt($plaintext);
}
// we pad with chr(0) since that's what mcrypt_generic does. to quote from http://php.net/function.mcrypt-generic :
// "The data is padded with "\0" to make sure the length of the data is n * blocksize."
$plaintext = str_pad($plaintext, ceil(strlen($plaintext) / 8) * 8, chr(0));
$des = $this->des;
$ciphertext = '';
switch ($this->mode) {
case CRYPT_DES_MODE_ECB:
for ($i = 0; $i < strlen($plaintext); $i+=8) {
$block = substr($plaintext, $i, 8);
$block = $des[0]->_processBlock($block, CRYPT_DES_ENCRYPT);
$block = $des[1]->_processBlock($block, CRYPT_DES_DECRYPT);
$block = $des[2]->_processBlock($block, CRYPT_DES_ENCRYPT);
$ciphertext.= $block;
}
break;
case CRYPT_DES_MODE_CBC:
$xor = $this->encryptIV;
for ($i = 0; $i < strlen($plaintext); $i+=8) {
$block = substr($plaintext, $i, 8) ^ $xor;
$block = $des[0]->_processBlock($block, CRYPT_DES_ENCRYPT);
$block = $des[1]->_processBlock($block, CRYPT_DES_DECRYPT);
$block = $des[2]->_processBlock($block, CRYPT_DES_ENCRYPT);
$xor = $block;
$ciphertext.= $block;
}
if ($this->continuousBuffer) {
$this->encryptIV = $xor;
}
break;
case CRYPT_DES_MODE_CTR:
$xor = $this->encryptIV;
for ($i = 0; $i < strlen($plaintext); $i+=8) {
$key = $this->_generate_xor(8, $xor);
$key = $des[0]->_processBlock($key, CRYPT_DES_ENCRYPT);
$key = $des[1]->_processBlock($key, CRYPT_DES_DECRYPT);
$key = $des[2]->_processBlock($key, CRYPT_DES_ENCRYPT);
$block = substr($plaintext, $i, 8);
$ciphertext.= $block ^ $key;
}
if ($this->continuousBuffer) {
$this->encryptIV = $xor;
}
}
return $ciphertext;
}
/**
* Decrypts a message.
*
* @access public
* @param String $ciphertext
*/
function decrypt($ciphertext)
{
if ($this->mode == CRYPT_DES_MODE_3CBC && strlen($this->key) > 8) {
$plaintext = $this->des[0]->decrypt($this->des[1]->encrypt($this->des[2]->decrypt($ciphertext)));
return $this->_unpad($plaintext);
}
// we pad with chr(0) since that's what mcrypt_generic does. to quote from http://php.net/function.mcrypt-generic :
// "The data is padded with "\0" to make sure the length of the data is n * blocksize."
$ciphertext = str_pad($ciphertext, (strlen($ciphertext) + 7) & 0xFFFFFFF8, chr(0));
if ( CRYPT_DES_MODE == CRYPT_DES_MODE_MCRYPT ) {
if ($this->changed) {
if (!isset($this->demcrypt)) {
$this->demcrypt = mcrypt_module_open(MCRYPT_3DES, '', $this->mode, '');
}
mcrypt_generic_init($this->demcrypt, $this->key, $this->decryptIV);
$this->changed = false;
}
$plaintext = mdecrypt_generic($this->demcrypt, $ciphertext);
if (!$this->continuousBuffer) {
mcrypt_generic_init($this->demcrypt, $this->key, $this->decryptIV);
}
return $this->mode != 'ctr' ? $this->_unpad($plaintext) : $plaintext;
}
if (strlen($this->key) <= 8) {
$this->des[0]->mode = $this->mode;
return $this->_unpad($this->des[0]->decrypt($plaintext));
}
$des = $this->des;
$plaintext = '';
switch ($this->mode) {
case CRYPT_DES_MODE_ECB:
for ($i = 0; $i < strlen($ciphertext); $i+=8) {
$block = substr($ciphertext, $i, 8);
$block = $des[2]->_processBlock($block, CRYPT_DES_DECRYPT);
$block = $des[1]->_processBlock($block, CRYPT_DES_ENCRYPT);
$block = $des[0]->_processBlock($block, CRYPT_DES_DECRYPT);
$plaintext.= $block;
}
break;
case CRYPT_DES_MODE_CBC:
$xor = $this->decryptIV;
for ($i = 0; $i < strlen($ciphertext); $i+=8) {
$orig = $block = substr($ciphertext, $i, 8);
$block = $des[2]->_processBlock($block, CRYPT_DES_DECRYPT);
$block = $des[1]->_processBlock($block, CRYPT_DES_ENCRYPT);
$block = $des[0]->_processBlock($block, CRYPT_DES_DECRYPT);
$plaintext.= $block ^ $xor;
$xor = $orig;
}
if ($this->continuousBuffer) {
$this->decryptIV = $xor;
}
break;
case CRYPT_DES_MODE_CTR:
$xor = $this->decryptIV;
for ($i = 0; $i < strlen($ciphertext); $i+=8) {
$key = $this->_generate_xor(8, $xor);
$key = $des[0]->_processBlock($key, CRYPT_DES_ENCRYPT);
$key = $des[1]->_processBlock($key, CRYPT_DES_DECRYPT);
$key = $des[2]->_processBlock($key, CRYPT_DES_ENCRYPT);
$block = substr($ciphertext, $i, 8);
$plaintext.= $block ^ $key;
}
if ($this->continuousBuffer) {
$this->decryptIV = $xor;
}
}
return $this->mode != CRYPT_DES_MODE_CTR ? $this->_unpad($plaintext) : $plaintext;
}
/**
* Treat consecutive "packets" as if they are a continuous buffer.
*
* Say you have a 16-byte plaintext $plaintext. Using the default behavior, the two following code snippets
* will yield different outputs:
*
* <code>
* echo $des->encrypt(substr($plaintext, 0, 8));
* echo $des->encrypt(substr($plaintext, 8, 8));
* </code>
* <code>
* echo $des->encrypt($plaintext);
* </code>
*
* The solution is to enable the continuous buffer. Although this will resolve the above discrepancy, it creates
* another, as demonstrated with the following:
*
* <code>
* $des->encrypt(substr($plaintext, 0, 8));
* echo $des->decrypt($des->encrypt(substr($plaintext, 8, 8)));
* </code>
* <code>
* echo $des->decrypt($des->encrypt(substr($plaintext, 8, 8)));
* </code>
*
* With the continuous buffer disabled, these would yield the same output. With it enabled, they yield different
* outputs. The reason is due to the fact that the initialization vector's change after every encryption /
* decryption round when the continuous buffer is enabled. When it's disabled, they remain constant.
*
* Put another way, when the continuous buffer is enabled, the state of the Crypt_DES() object changes after each
* encryption / decryption round, whereas otherwise, it'd remain constant. For this reason, it's recommended that
* continuous buffers not be used. They do offer better security and are, in fact, sometimes required (SSH uses them),
* however, they are also less intuitive and more likely to cause you problems.
*
* @see Crypt_TripleDES::disableContinuousBuffer()
* @access public
*/
function enableContinuousBuffer()
{
$this->continuousBuffer = true;
if ($this->mode == CRYPT_DES_MODE_3CBC) {
$this->des[0]->enableContinuousBuffer();
$this->des[1]->enableContinuousBuffer();
$this->des[2]->enableContinuousBuffer();
}
}
/**
* Treat consecutive packets as if they are a discontinuous buffer.
*
* The default behavior.
*
* @see Crypt_TripleDES::enableContinuousBuffer()
* @access public
*/
function disableContinuousBuffer()
{
$this->continuousBuffer = false;
$this->encryptIV = $this->iv;
$this->decryptIV = $this->iv;
if ($this->mode == CRYPT_DES_MODE_3CBC) {
$this->des[0]->disableContinuousBuffer();
$this->des[1]->disableContinuousBuffer();
$this->des[2]->disableContinuousBuffer();
}
}
/**
* Pad "packets".
*
* DES works by encrypting eight bytes at a time. If you ever need to encrypt or decrypt something that's not
* a multiple of eight, it becomes necessary to pad the input so that it's length is a multiple of eight.
*
* Padding is enabled by default. Sometimes, however, it is undesirable to pad strings. Such is the case in SSH1,
* where "packets" are padded with random bytes before being encrypted. Unpad these packets and you risk stripping
* away characters that shouldn't be stripped away. (SSH knows how many bytes are added because the length is
* transmitted separately)
*
* @see Crypt_TripleDES::disablePadding()
* @access public
*/
function enablePadding()
{
$this->padding = true;
}
/**
* Do not pad packets.
*
* @see Crypt_TripleDES::enablePadding()
* @access public
*/
function disablePadding()
{
$this->padding = false;
}
/**
* Pads a string
*
* Pads a string using the RSA PKCS padding standards so that its length is a multiple of the blocksize (8).
* 8 - (strlen($text) & 7) bytes are added, each of which is equal to chr(8 - (strlen($text) & 7)
*
* If padding is disabled and $text is not a multiple of the blocksize, the string will be padded regardless
* and padding will, hence forth, be enabled.
*
* @see Crypt_TripleDES::_unpad()
* @access private
*/
function _pad($text)
{
$length = strlen($text);
if (!$this->padding) {
if (($length & 7) == 0) {
return $text;
} else {
user_error("The plaintext's length ($length) is not a multiple of the block size (8)", E_USER_NOTICE);
$this->padding = true;
}
}
$pad = 8 - ($length & 7);
return str_pad($text, $length + $pad, chr($pad));
}
/**
* Unpads a string
*
* If padding is enabled and the reported padding length is invalid the encryption key will be assumed to be wrong
* and false will be returned.
*
* @see Crypt_TripleDES::_pad()
* @access private
*/
function _unpad($text)
{
if (!$this->padding) {
return $text;
}
$length = ord($text[strlen($text) - 1]);
if (!$length || $length > 8) {
return false;
}
return substr($text, 0, -$length);
}
}
// vim: ts=4:sw=4:et:
// vim6: fdl=1:

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<?php
// $Id: array_fill.php,v 1.1 2007/07/02 04:19:55 terrafrost Exp $
/**
* Replace array_fill()
*
* @category PHP
* @package PHP_Compat
* @license LGPL - http://www.gnu.org/licenses/lgpl.html
* @copyright 2004-2007 Aidan Lister <aidan@php.net>, Arpad Ray <arpad@php.net>
* @link http://php.net/function.array_fill
* @author Jim Wigginton <terrafrost@php.net>
* @version $Revision: 1.1 $
* @since PHP 4.2.0
*/
function php_compat_array_fill($start_index, $num, $value)
{
if ($num <= 0) {
user_error('array_fill(): Number of elements must be positive', E_USER_WARNING);
return false;
}
$temp = array();
$end_index = $start_index + $num;
for ($i = (int) $start_index; $i < $end_index; $i++) {
$temp[$i] = $value;
}
return $temp;
}
// Define
if (!function_exists('array_fill')) {
function array_fill($start_index, $num, $value)
{
return php_compat_array_fill($start_index, $num, $value);
}
}
?>

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<?php
// $Id: bcpowmod.php,v 1.1 2007/07/02 04:19:55 terrafrost Exp $
/**
* Replace bcpowmod()
*
* @category PHP
* @package PHP_Compat
* @license LGPL - http://www.gnu.org/licenses/lgpl.html
* @copyright 2004-2007 Aidan Lister <aidan@php.net>, Arpad Ray <arpad@php.net>
* @link http://php.net/function.bcpowmod
* @author Sara Golemon <pollita@php.net>
* @version $Revision: 1.1 $
* @since PHP 5.0.0
* @require PHP 4.0.0 (user_error)
*/
function php_compat_bcpowmod($x, $y, $modulus, $scale = 0)
{
// Sanity check
if (!is_scalar($x)) {
user_error('bcpowmod() expects parameter 1 to be string, ' .
gettype($x) . ' given', E_USER_WARNING);
return false;
}
if (!is_scalar($y)) {
user_error('bcpowmod() expects parameter 2 to be string, ' .
gettype($y) . ' given', E_USER_WARNING);
return false;
}
if (!is_scalar($modulus)) {
user_error('bcpowmod() expects parameter 3 to be string, ' .
gettype($modulus) . ' given', E_USER_WARNING);
return false;
}
if (!is_scalar($scale)) {
user_error('bcpowmod() expects parameter 4 to be integer, ' .
gettype($scale) . ' given', E_USER_WARNING);
return false;
}
$t = '1';
while (bccomp($y, '0')) {
if (bccomp(bcmod($y, '2'), '0')) {
$t = bcmod(bcmul($t, $x), $modulus);
$y = bcsub($y, '1');
}
$x = bcmod(bcmul($x, $x), $modulus);
$y = bcdiv($y, '2');
}
return $t;
}
// Define
if (!function_exists('bcpowmod')) {
function bcpowmod($x, $y, $modulus, $scale = 0)
{
return php_compat_bcpowmod($x, $y, $modulus, $scale);
}
}
?>

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<?php
/**
* Replace str_split()
*
* @category PHP
* @package PHP_Compat
* @license LGPL - http://www.gnu.org/licenses/lgpl.html
* @copyright 2004-2007 Aidan Lister <aidan@php.net>, Arpad Ray <arpad@php.net>
* @link http://php.net/function.str_split
* @author Aidan Lister <aidan@php.net>
* @version $Revision: 1.1 $
* @since PHP 5
* @require PHP 4.0.0 (user_error)
*/
function php_compat_str_split($string, $split_length = 1)
{
if (!is_scalar($split_length)) {
user_error('str_split() expects parameter 2 to be long, ' .
gettype($split_length) . ' given', E_USER_WARNING);
return false;
}
$split_length = (int) $split_length;
if ($split_length < 1) {
user_error('str_split() The length of each segment must be greater than zero', E_USER_WARNING);
return false;
}
// Select split method
if ($split_length < 65536) {
// Faster, but only works for less than 2^16
preg_match_all('/.{1,' . $split_length . '}/s', $string, $matches);
return $matches[0];
} else {
// Required due to preg limitations
$arr = array();
$idx = 0;
$pos = 0;
$len = strlen($string);
while ($len > 0) {
$blk = ($len < $split_length) ? $len : $split_length;
$arr[$idx++] = substr($string, $pos, $blk);
$pos += $blk;
$len -= $blk;
}
return $arr;
}
}
// Define
if (!function_exists('str_split')) {
function str_split($string, $split_length = 1)
{
return php_compat_str_split($string, $split_length);
}
}

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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 3. Cryptography</title><link rel="stylesheet" href="docbook.css" type="text/css" /><meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /><link rel="start" href="index.html" title="PHP Secure Communications Library" /><link rel="up" href="index.html" title="PHP Secure Communications Library" /><link rel="prev" href="math.html" title="Chapter 2. Math" /><link rel="next" href="net.html" title="Chapter 4. Networking" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 3. Cryptography</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="math.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="net.html">Next</a></td></tr></table><hr /></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="crypt"></a>Chapter 3. Cryptography</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="crypt.html#crypt_intro">3.1. Introduction</a></span></dt><dd><dl><dt><span class="section"><a href="crypt.html#crypt_dependencies">3.1.1. Dependencies</a></span></dt><dt><span class="section"><a href="crypt.html#crypt_set">3.1.2. setKey() and setIV()</a></span></dt><dt><span class="section"><a href="crypt.html#crypt_setmcrypt">3.1.3. setMCrypt()</a></span></dt><dt><span class="section"><a href="crypt.html#crypt_encrypt">3.1.4. encrypt() and decrypt()</a></span></dt><dt><span class="section"><a href="crypt.html#crypt_continuousbuffer">3.1.5. enableContinuousBuffer() and disableContinuousBuffer()</a></span></dt><dt><span class="section"><a href="crypt.html#crypt_padding">3.1.6. enablePadding() and disablePadding()</a></span></dt></dl></dd><dt><span class="section"><a href="crypt.html#crypt_des">3.2. Crypt_DES</a></span></dt><dd><dl><dt><span class="section"><a href="crypt.html#crypt_des_constructor">3.2.1. The constructor</a></span></dt></dl></dd><dt><span class="section"><a href="crypt.html#crypt_tripledes">3.3. Crypt_TripleDES</a></span></dt><dd><dl><dt><span class="section"><a href="crypt.html#crypt_tripledes_constructor">3.3.1. The constructor</a></span></dt></dl></dd><dt><span class="section"><a href="crypt.html#crypt_rc4">3.4. Crypt_RC4</a></span></dt><dd><dl><dt><span class="section"><a href="crypt.html#crypt_rc4_constructor">3.4.1. The constructor</a></span></dt></dl></dd><dt><span class="section"><a href="crypt.html#crypt_aes">3.5. Crypt_Rijndael &amp; Crypt_AES</a></span></dt><dd><dl><dt><span class="section"><a href="crypt.html#crypt_aes_constructor">3.5.1. The constructor</a></span></dt><dt><span class="section"><a href="crypt.html#crypt_aes_vs_rijndael">3.5.2. AES vs. Rijndael</a></span></dt><dt><span class="section"><a href="crypt.html#crypt_aes_setkeylength">3.5.3. setKeyLength()</a></span></dt><dt><span class="section"><a href="crypt.html#crypt_aes_setblocklength">3.5.4. setBlockLength()</a></span></dt><dt><span class="section"><a href="crypt.html#crypt_aes_benchmarks">3.5.5. Speed Comparisons</a></span></dt></dl></dd></dl></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="crypt_intro"></a>3.1. Introduction</h2></div></div></div><p>
All of the cryptographic libraries included in phpseclib use mcrypt, if available, and an internal implementation
if it's not. The libraries all use a common interface although some functions, for some algorithms, carry with
with them certain caveats. Those that do not have caveats attached (or have relatively few attached) are
described below. If you don't know which one to use, try <code class="code">Crypt_TripleDES</code>.
</p><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="crypt_dependencies"></a>3.1.1. Dependencies</h3></div></div></div><p>
The Crypt_* functions require, minimally, PHP 4.0.0. Crypt_TripleDES additionally requires Crypt/DES.php.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="crypt_set"></a>3.1.2. setKey() and setIV()</h3></div></div></div><p>
Sets the key and the initialization vector, respectively. If neither are set, each assumed to be equal to
some amount of null bytes. The initialization vector is only used in block ciphers and even then only
in CBC mode. If the key or the initialization vector are larger then the block size, they're truncated.
If they're smaller, they're padded with null bytes.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="crypt_setmcrypt"></a>3.1.3. setMCrypt()</h3></div></div></div><p>
See php.net's entry on <a class="ulink" href="http://php.net/function.mcrypt-module-open#function.mcrypt-module-open" target="_top">mcrypt_module_open</a>.
The first parameter is equal to <code class="code">$algorithm_directory</code> and the second, to <code class="code">$mode_directory</code>.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="crypt_encrypt"></a>3.1.4. encrypt() and decrypt()</h3></div></div></div><p>
Self-explanatory. Encrypts or decrypts messages. See the examples in the subsequent sections.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="crypt_continuousbuffer"></a>3.1.5. enableContinuousBuffer() and disableContinuousBuffer()</h3></div></div></div><p>
Say you have a 16-byte plaintext $plaintext and that you're using <code class="code">Crypt_DES</code>. Using the default behavior, the two following code snippets
will yield different outputs:
</p><pre class="programlisting"> echo $des-&gt;encrypt(substr($plaintext, 0, 8));
echo $des-&gt;encrypt(substr($plaintext, 8, 8));</pre><pre class="programlisting"> echo $des-&gt;encrypt($plaintext);</pre><p>
The solution is to enable the continuous buffer. Although this will resolve the above discrepancy, it creates
another, as demonstrated with the following:
</p><pre class="programlisting"> $des-&gt;encrypt(substr($plaintext, 0, 8));
echo $des-&gt;decrypt($des-&gt;encrypt(substr($plaintext, 8, 8)));</pre><pre class="programlisting"> echo $des-&gt;decrypt($des-&gt;encrypt(substr($plaintext, 8, 8)));</pre><p>
With the continuous buffer disabled, these would yield the same output. With it enabled, they yield different
outputs. The reason is due to the fact that the initialization vector's change after every encryption /
decryption round when the continuous buffer is enabled. When it's disabled, they remain constant.
Put another way, when the continuous buffer is enabled, the state of the <code class="code">Crypt_DES()</code> object changes after each
encryption / decryption round, whereas otherwise, it'd remain constant. For this reason, it's recommended that
continuous buffers not be used. They do offer better security and are, in fact, sometimes required (SSH uses them),
however, they are also less intuitive and more likely to cause you problems.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="crypt_padding"></a>3.1.6. enablePadding() and disablePadding()</h3></div></div></div><p>
Enables / disables PKCS padding on block ciphers. Stream ciphers (<code class="code">Crypt_RC4</code> is the only stream
cipher currently included) ignore this.
</p></div></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="crypt_des"></a>3.2. Crypt_DES</h2></div></div></div><p>
Implements DES (a block cipher). Here's an example of how to use it:
</p><pre class="programlisting">&lt;?php
include('Crypt/DES.php');
$des = new Crypt_DES();
$des-&gt;setKey('abcdefgh');
$size = 10 * 1024;
$plaintext = '';
for ($i = 0; $i &lt; $size; $i++) {
$plaintext.= 'a';
}
echo $des-&gt;decrypt($des-&gt;encrypt($plaintext));
?&gt;</pre><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="crypt_des_constructor"></a>3.2.1. The constructor</h3></div></div></div><p>
The constructor takes one optional parameter - $mode. $mode can be equal to <code class="code">CRYPT_DES_MODE_ECB</code>
or <code class="code">CRYPT_DES_MODE_CBC</code>. <code class="code">CRYPT_DES_MODE_CBC</code> is generally considered more secure
and is what <code class="code">Crypt_DES</code> uses by default. If you don't know the difference between ECB or CBC,
just use the default settings.
</p></div></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="crypt_tripledes"></a>3.3. Crypt_TripleDES</h2></div></div></div><p>
Implements TripleDES (a block cipher). Here's an example of how to use it:
</p><pre class="programlisting">&lt;?php
include('Crypt/TripleDES.php');
$des = new Crypt_TripleDES();
$des-&gt;setKey('abcdefghijklmnopqrstuvwx');
$size = 10 * 1024;
$plaintext = '';
for ($i = 0; $i &lt; $size; $i++) {
$plaintext.= 'a';
}
echo $des-&gt;decrypt($des-&gt;encrypt($plaintext));
?&gt;</pre><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="crypt_tripledes_constructor"></a>3.3.1. The constructor</h3></div></div></div><p>
The constructor takes one optional parameter - $mode. $mode can be equal to <code class="code">CRYPT_DES_MODE_ECB</code>,
<code class="code">CRYPT_DES_MODE_CBC</code>, <code class="code">CRYPT_DES_MODE_3CBC</code>, or <code class="code">CRYPT_DES_MODE_CBC3</code>.
<code class="code">CRYPT_DES_MODE_CBC3</code> is an alias <code class="code">CRYPT_DES_MODE_CBC</code>. It's defined to distinguish
it from <code class="code">CRYPT_DES_MODE_3CBC</code>, which uses inner chaining to propogate the initialization vector.
SSH-1 uses this and it is generally considered to be less secure then <code class="code">CRYPT_DES_MODE_CBC3</code>,
which uses outer chaining (and is what SSH-2 uses).
</p></div></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="crypt_rc4"></a>3.4. Crypt_RC4</h2></div></div></div><p>
Implements RC4 (a stream cipher). Here's an example of how to use it:
</p><pre class="programlisting">&lt;?php
include('Crypt/RC4.php');
$rc4 = new Crypt_RC4();
$rc4-&gt;setKey('abcdefghijklmnopqrstuvwx');
$size = 10 * 1024;
$plaintext = '';
for ($i = 0; $i &lt; $size; $i++) {
$plaintext.= 'a';
}
echo $rc4-&gt;decrypt($rc4-&gt;encrypt($plaintext));
?&gt;</pre><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="crypt_rc4_constructor"></a>3.4.1. The constructor</h3></div></div></div><p>
Not much to say about this constructor. Since it's a stream cipher, you don't need to worry about which
mode of operation to use.
</p></div></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="crypt_aes"></a>3.5. Crypt_Rijndael &amp; Crypt_AES</h2></div></div></div><p>
Implements Rijndael / AES. Here's an example of how to use Crypt_AES:
</p><pre class="programlisting">&lt;?php
include('Crypt/AES.php');
$aes = new Crypt_AES();
$aes-&gt;setKey('abcdefghijklmnop');
$size = 10 * 1024;
$plaintext = '';
for ($i = 0; $i &lt; $size; $i++) {
$plaintext.= 'a';
}
echo $aes-&gt;decrypt($aes-&gt;encrypt($plaintext));
?&gt;</pre><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="crypt_aes_constructor"></a>3.5.1. The constructor</h3></div></div></div><p>
<code class="code">Crypt_AES</code>'s constructor takes <code class="code">CRYPT_AES_MODE_ECB</code> and <code class="code">CRYPT_AES_MODE_CBC</code> as parameters. <code class="code">Crypt_Rijndael</code>, <code class="code">CRYPT_RIJNDAEL_MODE_ECB</code> and <code class="code">CRYPT_RIJNDAEL_MODE_CBC</code>. In both cases, if no valid mode is defined, CBC will be used.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="crypt_aes_vs_rijndael"></a>3.5.2. AES vs. Rijndael</h3></div></div></div><p>
AES is a subset of Rijndael. Both have variable key sizes, however, AES's block size is fixed at 128 bytes, whereas Rijndael's is variable. Also, Rijndael supports, by means of an extension to the specification, two key sizes that AES does not - 160 bits and 224 bits.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="crypt_aes_setkeylength"></a>3.5.3. setKeyLength()</h3></div></div></div><p>
Valid key lengths for AES are 128 bits, 192 bits, and 256 bits. If the key that is assigned is invalid and less than 256 bits, they key length is rounded up to the next closest valid size and the key will be null padded to that amount. If the key length is greater than 256 bits, it will be truncated to 256 bits.
</p><p>
As an example, if the key is 136 bits, it will be null padded to 192 bits (or 160 bits if Rijndael is being used).
</p><p>
If <code class="code">setKeyLength()</code> has been called, this behavior changes somewhat. Say you've set the key length, via this function, to 256 bits. Then, instead of an invalid key being null padded to 192 or 160 bits, it will be null padded to 256 bits.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="crypt_aes_setblocklength"></a>3.5.4. setBlockLength()</h3></div></div></div><p>
<code class="code">setBlockLength()</code> operates in a manner similar to <code class="code">setKeyLength()</code>, with one exception. <code class="code">setBlockLength()</code> only works on Rijndael. Although <code class="code">Crypt_AES</code> inherits <code class="code">setBlockLength()</code> as a function, the function doesn't do anything in AES.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="crypt_aes_benchmarks"></a>3.5.5. Speed Comparisons</h3></div></div></div><p>
The following table compares the speed of five different pure-PHP implementations of AES (one of which is Crypt_Rijndael and one of which is Crypt_AES) when ran on 150KB of text on a 1.8GHz Pentium 4-M. The numbers listed are averaged from five different trials and are measured in seconds. phpseclib's two implementations are highlighted. All implementations can be viewed by clicking on their names.
</p><div class="table"><a id="crypt_aes_benchmarks_table"></a><p class="title"><b>Table 3.1. AES Speed Comparisons</b></p><div class="table-contents"><table summary="AES Speed Comparisons" border="1"><colgroup><col /><col /><col /><col /><col /></colgroup><thead><tr><th align="right"><a class="ulink" href="http://phpseclib.sourceforge.net/movable-type.phps" target="_top">movable-type.phps</a></th><th align="right"><a class="ulink" href="http://phpseclib.sourceforge.net/phpaes.phps" target="_top">phpaes.phps</a></th><th align="right"><a class="ulink" href="http://phpseclib.sourceforge.net/phpclasses1.phps" target="_top">phpclasses1.phps</a></th><th align="right"><a class="ulink" href="http://phpseclib.sourceforge.net/phpclasses2.phps" target="_top">phpclasses2.phps</a></th><th align="right"><a class="ulink" href="http://phpseclib.sourceforge.net/phpseclib-aes.phps" target="_top">phpseclib-aes.phps</a></th><th align="right"><a class="ulink" href="http://phpseclib.sourceforge.net/phpseclib-rijndael.phps" target="_top">phpseclib-rijndael.phps</a></th></tr></thead><tbody><tr><td align="right">15.6844158172</td><td align="right">39.9537248135</td><td align="right">15.0100150108</td><td align="right">62.591713190079</td><td class="highlight" align="right">3.5728311081</td><td class="highlight" align="right">5.24388728142</td></tr></tbody></table></div></div><br class="table-break" /><p>
As can be seen, phpseclib's implementations are the fastest. phpseclib-aes.phps is faster than phpseclib-rijndael.phps because phpseclib-rijndael.phps has to contend with multiple block sizes whereas phpseclib-aes.phps does not.
</p></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="math.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="net.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 2. Math </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 4. Networking</td></tr></table></div></body></html>

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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 1. Introduction</title><link rel="stylesheet" href="docbook.css" type="text/css" /><meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /><link rel="start" href="index.html" title="PHP Secure Communications Library" /><link rel="up" href="index.html" title="PHP Secure Communications Library" /><link rel="prev" href="index.html" title="PHP Secure Communications Library" /><link rel="next" href="math.html" title="Chapter 2. Math" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 1. Introduction</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="index.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="math.html">Next</a></td></tr></table><hr /></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="intro"></a>Chapter 1. Introduction</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="intro.html#intro_intro">1.1. Who should use phpseclib</a></span></dt><dt><span class="section"><a href="intro.html#intro_usage">1.2. Using phpseclib</a></span></dt></dl></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="intro_intro"></a>1.1. Who should use phpseclib</h2></div></div></div><p>
Although many of the features this library implements are implemented in PHP via optional extensions, what are
you, as a developer, going to do when a user tries to run your software on a host which, coincidentally, doesn't
happen to have that optional extension installed? You could, flat-out, tell that user to look for another
software package that does work on their server (or to get another host, or whatever), which is liable to leave
a bad impression on the user, or you could use a library like this - a library that uses those optional
extensions if they're available and falls back on an internal PHP implementation if they're not.
</p><p>
Another advantage of using this library over optional PHP extensions is that you, as a developer, may find this
libraries API easier to use then extensions API.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="intro_usage"></a>1.2. Using phpseclib</h2></div></div></div><p>
This library is written using the same conventions that libraries in the PHP Extension and Application Repository (PEAR)
have been written in. In particular, this library expects to be in your <code class="code">include_path</code>:
</p><pre class="programlisting">&lt;?php
set_include_path(get_include_path() . PATH_SEPARATOR . 'phpseclib');
include('Net/SSH2.php');
?&gt;</pre></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="index.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="math.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">PHP <span class="red">Secure</span> Communications Library </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 2. Math</td></tr></table></div></body></html>

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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 2. Math</title><link rel="stylesheet" href="docbook.css" type="text/css" /><meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /><link rel="start" href="index.html" title="PHP Secure Communications Library" /><link rel="up" href="index.html" title="PHP Secure Communications Library" /><link rel="prev" href="intro.html" title="Chapter 1. Introduction" /><link rel="next" href="sym_crypt.html" title="Chapter 3. Symmetric-key Cryptography" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 2. Math</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="intro.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="sym_crypt.html">Next</a></td></tr></table><hr /></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="math"></a>Chapter 2. Math</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="math.html#math_biginteger">2.1. Math_BigInteger</a></span></dt><dd><dl><dt><span class="section"><a href="math.html#math_biginteger_dependencies">2.1.1. Dependencies</a></span></dt><dt><span class="section"><a href="math.html#math_biginteger_constructor">2.1.2. The constructor</a></span></dt><dt><span class="section"><a href="math.html#math_biginteger_output">2.1.3. toString(), toBytes(), toHex() and toBits()</a></span></dt><dt><span class="section"><a href="math.html#math_biginteger_fourfunctions">2.1.4. add(), subtract(), multiply() and divide()</a></span></dt><dt><span class="section"><a href="math.html#math_biginteger_modulo">2.1.5. powMod() and modInverse()</a></span></dt><dt><span class="section"><a href="math.html#math_biginteger_gcd">2.1.6. gcd() and extendedGCD()</a></span></dt><dt><span class="section"><a href="math.html#math_abs">2.1.7. abs()</a></span></dt><dt><span class="section"><a href="math.html#math_biginteger_compare">2.1.8. equals() and compare()</a></span></dt><dt><span class="section"><a href="math.html#math_biginteger_precision">2.1.9. setPrecision()</a></span></dt><dt><span class="section"><a href="math.html#math_biginteger_bitwise">2.1.10. bitwise_and(), bitwise_or(), bitwise_xor() and bitwise_not()</a></span></dt><dt><span class="section"><a href="math.html#math_biginteger_shifts">2.1.11. bitwise_rightShift() and bitwise_leftShift()</a></span></dt><dt><span class="section"><a href="math.html#math_biginteger_rotates">2.1.12. bitwise_rightRotate() and bitwise_leftRotate()</a></span></dt><dt><span class="section"><a href="math.html#math_biginteger_setrandom">2.1.13. setRandomGenerator()</a></span></dt><dt><span class="section"><a href="math.html#math_biginteger_prime">2.1.14. isPrime()</a></span></dt><dt><span class="section"><a href="math.html#math_biginteger_random">2.1.15. random() and randomPrime()</a></span></dt></dl></dd></dl></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="math_biginteger"></a>2.1. Math_BigInteger</h2></div></div></div><p>
Implements an arbitrary precision integer arithmetic library. Uses gmp or bcmath, if available, and an
internal implementation, otherwise. Here's an example:
</p><pre class="programlisting">&lt;?php
include('Math/BigInteger.php');
$a = new Math_BigInteger(2);
$b = new Math_BigInteger(3);
$c = $a-&gt;add($b);
echo $c-&gt;toString(); // outputs 5
?&gt;</pre><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="math_biginteger_dependencies"></a>2.1.1. Dependencies</h3></div></div></div><p>
If you're running PHP 5, Math_BigInteger's only dependancy is the PCRE extension (which is enabled by default). Math_BigInteger also works on PHP 4 if PHP/Compat/Function/array_fill.php and PHP/Compat/Function/bcpowmod.php are included.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="math_biginteger_constructor"></a>2.1.2. The constructor</h3></div></div></div><p>
The constructor takes two parameters. The first is the number and the second represents the base. Both
are optional (if they're not provided, the Math_BigInteger object will assume a value of 0).
</p><p>
The supported bases are base-2, base-10 (default), base-16, and base-256. To set $a, in the
above example, to 2, using base-2, we'd do <code class="code">new Math_BigInteger('10', 2)</code>. To do it using
base-16, you could do <code class="code">new Math_BigInteger('2', 16)</code> or <code class="code">new Math_BigInteger('0x2', 16)</code>.
To set it to 2 using base-256, you'd do <code class="code">new Math_BigInteger(chr(2), 256)</code>.
</p><p>
If the base is negative (eg. -256), two's compliment will be used. Thus, <code class="code">new Math_BigInteger(chr(0xFF), -256)</code>
is equal to -1, as is <code class="code">new Math_BigInteger('0xFFFFFFFF', -16)</code> and <code class="code">new Math_BigInteger('11', -2)</code>.
Basically, if the leading bit is 1, the number is assumed to be negative.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="math_biginteger_output"></a>2.1.3. toString(), toBytes(), toHex() and toBits()</h3></div></div></div><p>
<code class="code">toString()</code> returns the base-10 form of a number. <code class="code">toBytes()</code> returns the base-256
form of a number, <code class="code">toHex()</code> returns the base-16 form, and <code class="code">toBits()</code> the base-2 form.
<code class="code">toBytes()</code>, <code class="code">toHex()</code>, and <code class="code">toBits()</code> also take an optional parameter which,
if set, will return the two's compliment of a number. So if, for example, $a is equal to -1,
<code class="code">toBytes(true)</code> will return <code class="code">chr(0xFF)</code>.
</p><p>
On PHP 5, <code class="code">toString()</code> is called automatically when used in a string context via the
<a class="ulink" href="http://php.net/language.oop5.magic#language.oop5.magic.tostring" target="_top">__toString() magic method</a>.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="math_biginteger_fourfunctions"></a>2.1.4. add(), subtract(), multiply() and divide()</h3></div></div></div><p>
<code class="code">subtract()</code> and <code class="code">multiply()</code> operate similarly to <code class="code">add()</code>. <code class="code">divide()</code>,
however, does not. Namely, it returns an array whose first element contains the quotient and whose
second element contains the "common residue". If the remainder would be positive, the "common residue"
and the remainder are the same. If the remainder would be negative, the "common residue" is equal to
the sum of the remainder and the divisor (basically, the "common residue" is the first positive modulo).
Here's an example:
</p><pre class="programlisting">&lt;?php
include('Math/BigInteger.php');
$a = new Math_BigInteger('10');
$b = new Math_BigInteger('20');
list($quotient, $remainder) = $a-&gt;divide($b);
echo $quotient-&gt;toString(); // outputs 0
echo "\r\n";
echo $remainder-&gt;toString(); // outputs 10
?&gt;</pre></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="math_biginteger_modulo"></a>2.1.5. powMod() and modInverse()</h3></div></div></div><p>
Examples of each follow:
</p><pre class="programlisting">&lt;?php
include('Math/BigInteger.php');
$a = new Math_BigInteger('10');
$b = new Math_BigInteger('20');
$c = new Math_BigInteger('30');
$c = $a-&gt;powMod($b, $c);
echo $c-&gt;toString(); // outputs 10
?&gt;</pre><pre class="programlisting">&lt;?php
include('Math/BigInteger.php');
$a = new Math_BigInteger(30);
$b = new Math_BigInteger(17);
$c = $a-&gt;modInverse($b);
echo $c-&gt;toString(); // outputs 4
?&gt;</pre></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="math_biginteger_gcd"></a>2.1.6. gcd() and extendedGCD()</h3></div></div></div><p>
<code class="code">extendedGCD()</code> returns an array containing three Math_BigInteger values indexed with x, y,
and gcd. x and y represent Bézout's identity. <code class="code">gcd()</code> returns a Math_BigInteger value
equal to the gcd. An example of each follows:
</p><pre class="programlisting">&lt;?php
include('Math/BigInteger.php');
$a = new Math_BigInteger(693);
$b = new Math_BigInteger(609);
extract($a-&gt;extendedGCD($b));
$c = $a-&gt;gcd($b);
echo $gcd-&gt;toString() . "\r\n"; // outputs 21
echo $c-&gt;toString() . "\r\n"; // outputs 21
echo $a-&gt;toString() * $x-&gt;toString() + $b-&gt;toString() * $y-&gt;toString(); // outputs 21
?&gt;</pre></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="math_abs"></a>2.1.7. abs()</h3></div></div></div><p>
<code class="code">$x-&gt;abs()</code> returns the absolute value of <code class="code">$x</code>.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="math_biginteger_compare"></a>2.1.8. equals() and compare()</h3></div></div></div><p>
<code class="code">$x-&gt;equals($y)</code> returns true or false depending on whether or not <code class="code">$x</code> and
<code class="code">$y</code> are equal.
</p><p>
<code class="code">$x-&gt;compare($y)</code> returns 1 if $x &gt; $y, 0 if $x == $y, and -1 if $x &lt; $y. The reason for this
is demonstrated thusly:
</p><pre class="programlisting">$x &gt; $y: $x-&gt;compare($y) &gt; 0
$x &lt; $y: $x-&gt;compare($y) &lt; 0
$x == $y: $x-&gt;compare($y) == 0
$x &gt;= $y: $x-&gt;compare($y) &gt;= 0
$x &lt;= $y: $x-&gt;compare($y) &lt;= 0</pre><p>
As a consequence of this, <code class="code">!$x-&gt;compare($y)</code> does not mean <code class="code">$x != $y</code> but rather
<code class="code">$x == $y</code>.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="math_biginteger_precision"></a>2.1.9. setPrecision()</h3></div></div></div><p>
Some bitwise operations give different results depending on the precision being used. Examples include
left shift, not, and rotates, as discussed for <a class="link" href="math.html#math_biginteger_bitwise" title="2.1.10. bitwise_and(), bitwise_or(), bitwise_xor() and bitwise_not()">bitwise_not()</a>.
This function lets you control the precision.
</p><p>
Whenever a new Math_BigInteger object is created it's precision is set to the same precision as the
calling object. In other words, if you do <code class="code">$b = $a-&gt;bitwise_not()</code> then <code class="code">$b</code> will
have the same precision as <code class="code">$a</code>.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="math_biginteger_bitwise"></a>2.1.10. bitwise_and(), bitwise_or(), bitwise_xor() and bitwise_not()</h3></div></div></div><p>
<code class="code">bitwise_and()</code>, <code class="code">bitwise_or()</code> and <code class="code">bitwise_xor()</code> operate similar to
<code class="code">add()</code>. <code class="code">bitwise_not()</code> is a bit more complicated. To elaborate, if the
precision (see <a class="link" href="math.html#math_biginteger_precision" title="2.1.9. setPrecision()">setPrecision</a>) is arbitrary,
<code class="code">$x-&gt;bitwise_not()</code> will always yield a smaller value since the most significant bit is
assumed to have a value of one. With fixed precision, however, the leading bit can be anything.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="math_biginteger_shifts"></a>2.1.11. bitwise_rightShift() and bitwise_leftShift()</h3></div></div></div><p>
<code class="code">$a-&gt;bitwise_rightShift($shift)</code> shifts $a by $shift bits, effectively dividing by 2**$shift.
<code class="code">$a-&gt;bitwise_leftShift($shift)</code> shifts $a by $shift bits, effectively multiplying by 2**$shift.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="math_biginteger_rotates"></a>2.1.12. bitwise_rightRotate() and bitwise_leftRotate()</h3></div></div></div><p>
<code class="code">$a-&gt;bitwise_rightRotate($shift)</code> and <code class="code">$a-&gt;bitwise_leftRotate($shift)</code> are
demonstrated thusly:
</p><pre class="programlisting">&lt;?php
include('Math/BigInteger.php');
$a = new Math_BigInteger('00111000', 2);
$a-&gt;setPrecision(8);
$b = $a-&gt;bitwise_leftRotate(2);
echo $b-&gt;toBits(); // returns 11100000
echo "\r\n";
$a = new Math_BigInteger('00111000', 2);
$b = $a-&gt;bitwise_leftRotate(2);
echo $b-&gt;toBits(); // returns 100011
?&gt;</pre><p>
Just as with <a class="link" href="math.html#math_biginteger_bitwise" title="2.1.10. bitwise_and(), bitwise_or(), bitwise_xor() and bitwise_not()">bitwise_not()</a>, these operations are
precision dependant.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="math_biginteger_setrandom"></a>2.1.13. setRandomGenerator()</h3></div></div></div><p>
Sets the random generator. To set it to <code class="code">mt_rand()</code> (which is what it is by default), call
<code class="code">$x-&gt;setRandomGenerator('mt_rand')</code>.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="math_biginteger_prime"></a>2.1.14. isPrime()</h3></div></div></div><p>
Returns true if a number is prime and false if it isn't.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="math_biginteger_random"></a>2.1.15. random() and randomPrime()</h3></div></div></div><p>
<code class="code">random($min, $max)</code> generates a random number between <code class="code">$min</code> and <code class="code">$max</code>.
<code class="code">randomPrime($min, $max)</code> generates a random prime number between <code class="code">$min</code> and <code class="code">$max</code>.
If no prime number exists between <code class="code">$min</code> and <code class="code">$max</code> false is returned.
</p><p>
<code class="code">randomPrime()</code> has an optional third parameter, as well - $timeout. Generating prime numbers
is a particurarly expensive operation and although in certain environments even 512-bit primes can be
generated in a less than a second it can take other environments upwards of around a minute if not more.
</p></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="intro.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="sym_crypt.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 1. Introduction </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 3. Symmetric-key Cryptography</td></tr></table></div></body></html>

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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 4. Miscellaneous Cryptography</title><link rel="stylesheet" href="docbook.css" type="text/css" /><meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /><link rel="start" href="index.html" title="PHP Secure Communications Library" /><link rel="up" href="index.html" title="PHP Secure Communications Library" /><link rel="prev" href="sym_crypt.html" title="Chapter 3. Symmetric-key Cryptography" /><link rel="next" href="net.html" title="Chapter 5. Networking" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 4. Miscellaneous Cryptography</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="sym_crypt.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="net.html">Next</a></td></tr></table><hr /></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="misc_crypt"></a>Chapter 4. Miscellaneous Cryptography</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="misc_crypt.html#misc_crypt_hash">4.1. Crypt_Hash</a></span></dt><dd><dl><dt><span class="section"><a href="misc_crypt.html#misc_crypt_hash_supported">4.1.1. Supported Algorithms and Dependencies</a></span></dt><dt><span class="section"><a href="misc_crypt.html#misc_crypt_hash_example">4.1.2. Example</a></span></dt></dl></dd><dt><span class="section"><a href="misc_crypt.html#misc_crypt_rsa">4.2. Crypt_RSA</a></span></dt><dd><dl><dt><span class="section"><a href="misc_crypt.html#misc_crypt_rsa_dependencies">4.2.1. Dependencies</a></span></dt><dt><span class="section"><a href="misc_crypt.html#misc_crypt_rsa_examples">4.2.2. Examples</a></span></dt><dt><span class="section"><a href="misc_crypt.html#misc_crypt_rsa_createkey">4.2.3. createKey()</a></span></dt><dt><span class="section"><a href="misc_crypt.html#misc_crypt_rsa_format">4.2.4. setPrivateKeyFormat(), setPublicKeyFormat(), loadKey() and setPassword()</a></span></dt><dt><span class="section"><a href="misc_crypt.html#misc_crypt_rsa_getpublickey">4.2.5. setPublicKey() and getPublicKey()</a></span></dt><dt><span class="section"><a href="misc_crypt.html#misc_crypt_rsa_encrypt">4.2.6. encrypt(), decrypt() and setEncryptionMode()</a></span></dt><dt><span class="section"><a href="misc_crypt.html#misc_crypt_rsa_sign">4.2.7. sign(), verify(), and setSignatureMode()</a></span></dt><dt><span class="section"><a href="misc_crypt.html#misc_crypt_rsa_params">4.2.8. setHash(), setMGFHash() and setSaltLength()</a></span></dt></dl></dd></dl></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="misc_crypt_hash"></a>4.1. Crypt_Hash</h2></div></div></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="misc_crypt_hash_supported"></a>4.1.1. Supported Algorithms and Dependencies</h3></div></div></div><p>The following algorithms are supported:</p><p>md2, md5, md5-96, sha1, sha1-96, sha256, sha384, and sha512</p><p>
Crypt_Hash requires, minimally, PHP 4.3.0 (due to its use of
<a class="ulink" href="http://php.net/function.sha1" target="_top">sha1()</a>). If sha384 or sha512 are being used and
you're not running PHP 5.1.2 or greater then Math/BigInteger.php is also required.
</p><p>
Crypt_Hash uses the hash extension if it's available (&gt; 5.1.2), mhash if it's not, and it's own
internal implementation if not even mhash is available.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="misc_crypt_hash_example"></a>4.1.2. Example</h3></div></div></div><pre class="programlisting">&lt;?php
include('Crypt/Hash.php');
$hash = new Crypt_Hash('sha1');
//$hash-&gt;setKey('abcdefg');
echo bin2hex($hash-&gt;hash('abcdefg'));
?&gt;</pre><p>If <code class="code">$hash-&gt;setKey()</code> had been called <code class="code">$hash-&gt;hash()</code> would have returned an HMAC.</p></div></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="misc_crypt_rsa"></a>4.2. Crypt_RSA</h2></div></div></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="misc_crypt_rsa_dependencies"></a>4.2.1. Dependencies</h3></div></div></div>
If you're running PHP 5, Crypt_RSA requires Math/BigInteger.php and Crypt/Hash.php. If you're running
PHP 4, Crypt_RSA also requires PHP/Compat/Function/array_fill.php, PHP/Compat/Function/bcpowmod.php, and
PHP/Compat/Function/str_split.php
</div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="misc_crypt_rsa_examples"></a>4.2.2. Examples</h3></div></div></div><p>Here's an example of how to encrypt / decrypt with Crypt_RSA:</p><pre class="programlisting">&lt;?php
include('Crypt/RSA.php');
$rsa = new Crypt_RSA();
extract($rsa-&gt;createKey());
$plaintext = 'terrafrost';
$rsa-&gt;loadKey($privatekey);
$ciphertext = $rsa-&gt;encrypt($plaintext);
$rsa-&gt;loadKey($publickey);
echo $rsa-&gt;decrypt($ciphertext);
?&gt;</pre><p>Here's an example of how to create / verify a signature with Crypt_RSA:</p><pre class="programlisting">&lt;?php
include('Crypt/RSA.php');
$rsa = new Crypt_RSA();
extract($rsa-&gt;createKey());
$plaintext = 'terrafrost';
$rsa-&gt;loadKey($privatekey);
$signature = $rsa-&gt;sign($plaintext);
$rsa-&gt;loadKey($publickey);
echo $rsa-&gt;verify($plaintext, $signature) ? 'verified' : 'unverified';
&gt;</pre></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="misc_crypt_rsa_createkey"></a>4.2.3. createKey()</h3></div></div></div><p>
<code class="code">createKey()</code> takes three parameters - <code class="code">$bits</code>, <code class="code">$timeout</code>,
and <code class="code">$primes</code>. <code class="code">$timeout</code> is present since creating a key has the potential to be
fairly time consuming and will guarantee that <code class="code">createKey()</code> does not run for more than
<code class="code">$timeout</code> seconds. <code class="code">$primes</code> lets provide pre-computed prime numbers to speed
things up.
</p><p>
<code class="code">extract($rsa-&gt;createKey())</code> creates three variables - <code class="code">$publickey</code>,
<code class="code">$privatekey</code>, and <code class="code">$partialkey</code>. If <code class="code">createKey</code> hit the timeout then
it'll return all the primes that it had managed to compute so that you might pass them back to
<code class="code">createKey()</code> on a subsequent call.
</p><p>
The exponent can be set by defining <code class="code">CRYPT_RSA_EXPONENT</code> and multi-prime RSA can be utilized
by adjusting <code class="code">CRYPT_RSA_SMALLEST_PRIME</code>. Note that these must be done before a Crypt_RSA()
object is initialized.
</p><p>
Smaller values for <code class="code">CRYPT_RSA_SMALLEST_PRIME</code> result in increased speed at the cost of security.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="misc_crypt_rsa_format"></a>4.2.4. setPrivateKeyFormat(), setPublicKeyFormat(), loadKey() and setPassword()</h3></div></div></div><p>Crypt_RSA supports the following formats:</p><p>CRYPT_RSA_PRIVATE_FORMAT_PKCS1:</p><pre class="programlisting">-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----</pre><p>CRYPT_RSA_PRIVATE_FORMAT_PKCS1 (with password):</p><pre class="programlisting">-----BEGIN RSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: DES-EDE3-CBC,0AE1DB47E71463BE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-----END RSA PRIVATE KEY-----</pre><p>CRYPT_RSA_PUBLIC_FORMAT_PKCS1:</p><pre class="programlisting">-----BEGIN PUBLIC KEY-----
MIGGAoGAfHlcdrcuOK6C02rbGR3SgV/ZJ2wnTiFBguh5FHduoB6LcZz49LIC/KcIiH/TckK8GxQd
oJ7wHCPBpNiumrlC6caj/C8jO/HZ3cb12Wuk4gUuJq1lg5+HTv4KRJ9pFeEFQqS6X+BTztY+EoRx
uc8MlLXS4PUeouwd9Ios2K0Y5/sCASU=
-----END PUBLIC KEY-----</pre><p>CRYPT_RSA_PUBLIC_FORMAT_OPENSSH:</p><pre class="programlisting">ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAIB8eVx2ty44roLTatsZHdKBX9knbCdOIUGC6HkUd26gHotx
nPj0sgL8pwiIf9NyQrwbFB2gnvAcI8Gk2K6auULpxqP8LyM78dndxvXZa6TiBS4mrWWDn4dO/gpEn2kV
4QVCpLpf4FPO1j4ShHG5zwyUtdLg9R6i7B30iizYrRjn+w== phpseclib-generated-key</pre><p>
Passwords can be set via <code class="code">setPassword()</code> and are only supported on private keys.
CRYPT_RSA_PUBLIC_FORMAT_OPENSSH generates keys that are intended to go in $HOME/.ssh/authorized_keys
for use with OpenSSH. Another format - CRYPT_RSA_PUBLIC_FORMAT_RAW - is stored as an array with two
indexes - one for the modulus and one for the exponent. Indexes accepted by <code class="code">loadkey()</code>
are as follows:
</p><p>
e, exponent, publicExponent, modulus, modulo, n
</p><p>
<code class="code">loadKey()</code> has two parameters - <code class="code">$key</code> and the optional <code class="code">$type</code>.
The default type, if <code class="code">$type</code> is not explicitely set, is CRYPT_RSA_PRIVATE_FORMAT_PKCS1.
It should, at this point, be noted that Crypt_RSA treats public and private keys largelly identically.
A key can be formatted as a CRYPT_RSA_PUBLIC_FORMAT_PKCS1 and still conform to the
CRYPT_RSA_PRIVATE_FORMAT_PKCS1 format and vice versa. The only real difference between private keys and
public keys is that private keys *can* contain their public key counterparts whereas public keys cannot.
That said, this distinction is, for the most part, irrelevant and academic. For a more thorough
discussion of this see <a class="link" href="misc_crypt.html#misc_crypt_rsa_getpublickey" title="4.2.5. setPublicKey() and getPublicKey()">setPublicKey() and getPublicKey()</a>.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="misc_crypt_rsa_getpublickey"></a>4.2.5. setPublicKey() and getPublicKey()</h3></div></div></div><p>
As noted in <a class="link" href="misc_crypt.html#misc_crypt_rsa_format" title="4.2.4. setPrivateKeyFormat(), setPublicKeyFormat(), loadKey() and setPassword()">setPrivateKeyFormat(), setPublicKeyFormat(), loadKey() and setPassword()</a>,
Crypt_RSA treats public and private keys largely identically. The only real difference is that some
private key formats contain the public key within them whereas no public key format does. The reason
you'd want to do this is for indexing purposes. For example, in SSH-2, RSA authentication works by
sending your public key along with a signature created by your private key. The SSH-2 server then looks
the public key up in an index of public keys to see if it's an allowed key and then verifies the signature.
To that end, <code class="code">setPublicKey()</code> defines the public key if it hasn't already been defined and
<code class="code">getPublicKey()</code> returns it. <code class="code">getPublicKey()</code> has an optional parameter - $type -
that sets the format.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="misc_crypt_rsa_encrypt"></a>4.2.6. encrypt(), decrypt() and setEncryptionMode()</h3></div></div></div><p>
Crypt_RSA supports two encryption modes - <code class="code">CRYPT_RSA_ENCRYPTION_OAEP</code> and
<code class="code">CRYPT_RSA_ENCRYPTION_PKCS1</code>. <code class="code">CRYPT_RSA_ENCRYPTION_OAEP</code> uses
<a class="ulink" href="http://en.wikipedia.org/wiki/Optimal_Asymmetric_Encryption_Padding" target="_top">Optimal Asymmetric Encryption Padding</a>
and provides more security than <code class="code">CRYPT_RSA_ENCRYPTION_PKCS1</code>.
</p><p>
Both <code class="code">CRYPT_RSA_ENCRYPTION_OAEP</code> and <code class="code">CRYPT_RSA_ENCRYPTION_PKCS1</code> impose limits
on how large the plaintext can be. If the plaintext exceeds these limits the plaintext will be split
up such that each block falls within those limits.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="misc_crypt_rsa_sign"></a>4.2.7. sign(), verify(), and setSignatureMode()</h3></div></div></div><p>
Crypt_RSA supports two signature modes - <code class="code">CRYPT_RSA_SIGNATURE_PSS</code> and
<code class="code">CRYPT_RSA_SIGNATURE_PKCS1</code>. The former is assumed to provide more security than the latter.
See <a class="link" href="misc_crypt.html#misc_crypt_rsa_examples" title="4.2.2. Examples">Examples</a> for examples.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="misc_crypt_rsa_params"></a>4.2.8. setHash(), setMGFHash() and setSaltLength()</h3></div></div></div><p>
In all likelihood, calling these functions will be unnecessary as the default values should be sufficient.
None-the-less a discussion of them follows.
</p><p>
<code class="code">setHash()</code> is used with signature production / verification and (if the encryption mode is
CRYPT_RSA_ENCRYPTION_OAEP) encryption and decryption. If the specified hash isn't supported sha1 will
be used.
</p><p>
<code class="code">setMGFHash()</code> determines which hashing function should be used for the mask generation
function as utilized in CRYPT_RSA_ENCRYPTION_OAEP and CRYPT_RSA_SIGNATURE_PSS. PKCS#1 recommends
but does not require that the MGFHash and the Hash be set to the same thing.
</p><p>
<code class="code">setSaltLength()</code> is only utilized with CRYPT_RSA_SIGNATURE_PSS. PKCS#1 recommends this
value either be 0 (which is what it is by default) or the length of the output of the hash function as
set via <code class="code">setHash()</code>
</p></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="sym_crypt.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="net.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 3. Symmetric-key Cryptography </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 5. Networking</td></tr></table></div></body></html>

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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 5. Networking</title><link rel="stylesheet" href="docbook.css" type="text/css" /><meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /><link rel="start" href="index.html" title="PHP Secure Communications Library" /><link rel="up" href="index.html" title="PHP Secure Communications Library" /><link rel="prev" href="misc_crypt.html" title="Chapter 4. Miscellaneous Cryptography" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 5. Networking</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="misc_crypt.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> </td></tr></table><hr /></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="net"></a>Chapter 5. Networking</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="net.html#net_ssh">5.1. Net_SSH</a></span></dt><dd><dl><dt><span class="section"><a href="net.html#net_ssh_dependencies">5.1.1. Dependencies</a></span></dt><dt><span class="section"><a href="net.html#net_ssh_ssh1">5.1.2. Net_SSH1 Examples</a></span></dt><dt><span class="section"><a href="net.html#net_ssh_ssh2">5.1.3. Net_SSH2 Examples</a></span></dt><dt><span class="section"><a href="net.html#net_ssh_host_key_verify">5.1.4. Host Key Verification</a></span></dt><dt><span class="section"><a href="net.html#net_ssh_interactive">5.1.5. interactiveRead() / interactiveWrite() vs. exec()</a></span></dt><dt><span class="section"><a href="net.html#net_ssh_exec">5.1.6. SSH-1's exec() vs. SSH-2's exec()</a></span></dt><dt><span class="section"><a href="net.html#net_ssh_successive">5.1.7. Successive calls to SSH-2's exec()</a></span></dt><dt><span class="section"><a href="net.html#net_ssh_debug">5.1.8. Debugging SSH-2</a></span></dt></dl></dd><dt><span class="section"><a href="net.html#net_sftp">5.2. Net_SFTP</a></span></dt><dd><dl><dt><span class="section"><a href="net.html#net_sftp_intro">5.2.1. Introduction</a></span></dt><dt><span class="section"><a href="net.html#net_sftp_dependencies">5.2.2. Dependencies</a></span></dt><dt><span class="section"><a href="net.html#net_sftp_example">5.2.3. Net_SFTP Example</a></span></dt><dt><span class="section"><a href="net.html#net_sftp_put">5.2.4. put($remote_file, $data [, $mode])</a></span></dt><dt><span class="section"><a href="net.html#net_sftp_get">5.2.5. get($remote_file [, $local_file])</a></span></dt><dt><span class="section"><a href="net.html#net_sftp_pwd">5.2.6. pwd(), chdir(), mkdir() and rmdir()</a></span></dt><dt><span class="section"><a href="net.html#net_sftp_chmod">5.2.7. chmod() and size()</a></span></dt><dt><span class="section"><a href="net.html#net_sftp_nlist">5.2.8. nlist() and rawlist()</a></span></dt><dt><span class="section"><a href="net.html#net_sftp_delete">5.2.9. delete() and rename()</a></span></dt><dt><span class="section"><a href="net.html#net_sftp_debug">5.2.10. Debugging SFTP</a></span></dt></dl></dd></dl></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="net_ssh"></a>5.1. Net_SSH</h2></div></div></div><p>
The Net_SSH1 and Net_SSH2 libraries have, for the most part, an identical API. Some functions, however, do behave differently.
</p><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_ssh_dependencies"></a>5.1.1. Dependencies</h3></div></div></div><p>
Net_SSH1/2 require, minimally, Math/BigInteger.php, Crypt/*.php, and PHP/Compat/Function/*.php. Net_SSH1 requires PHP 4.0.0 unless you're using the interactive functions, which require PHP 4.3.0. Net_SSH2 requires PHP 4.3.0 due to it's use of <a class="ulink" href="http://php.net/function.sha1" target="_top">sha1()</a>.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_ssh_ssh1"></a>5.1.2. Net_SSH1 Examples</h3></div></div></div><pre class="programlisting">&lt;?php
include('Net/SSH1.php');
$ssh = new Net_SSH1('www.domain.tld');
if (!$ssh-&gt;login('username', 'password')) {
exit('Login Failed');
}
while (true) {
echo $ssh-&gt;interactiveRead();
$read = array(STDIN);
$write = $except = NULL;
if (stream_select($read, $write, $except, 0)) {
$ssh-&gt;interactiveWrite(fread(STDIN, 1));
}
}
?&gt;</pre><pre class="programlisting">&lt;?php
include('Net/SSH1.php');
$ssh = new Net_SSH1('www.domain.tld');
if (!$ssh-&gt;login('username', 'password')) {
exit('Login Failed');
}
echo $ssh-&gt;exec('ls -la');
?&gt;</pre></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_ssh_ssh2"></a>5.1.3. Net_SSH2 Examples</h3></div></div></div><pre class="programlisting">&lt;?php
include('Net/SSH2.php');
$ssh = new Net_SSH2('www.domain.tld');
if (!$ssh-&gt;login('username', 'password')) {
exit('Login Failed');
}
echo $ssh-&gt;exec('pwd');
echo $ssh-&gt;exec('ls -la');
?&gt;</pre><pre class="programlisting">&lt;?php
include('Crypt/RSA.php');
include('Net/SSH2.php');
$key = new Crypt_RSA();
//$key-&gt;setPassword('whatever');
$key-&gt;loadKey(file_get_contents('privatekey'));
$ssh = new Net_SSH2('www.domain.tld');
if (!$ssh-&gt;login('username', $key)) {
exit('Login Failed');
}
echo $ssh-&gt;exec('pwd');
echo $ssh-&gt;exec('ls -la');
?&lt;</pre></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_ssh_host_key_verify"></a>5.1.4. Host Key Verification</h3></div></div></div><p>
SSH protects itself against active eavesdroppers by providing a host key. The first time you connect the host key is supposed to be cached in some manner. On subsequent connections, the host key being used for this connection should be checked against the cached host key. If they match, it's the same server. If not, it's a different one.
</p><p>
In SSH-1, <code class="code">getHostKeyPublicModulus()</code> and <code class="code">getHostKeyPublicExponent()</code> will provide you with the host key. In SSH-2, <code class="code">getServerPublicHostKey()</code> gets you the key.
</p><p>
The Net_SSH1 and Net_SSH2 examples omit the key verification stage for brevity. Also, depending on the context in which this library is used, it may even be unnecessary. For example, if you're connecting to www.example.com:22 from www.example.com:80, eavesdroppers are not something you need to worry about.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_ssh_interactive"></a>5.1.5. interactiveRead() / interactiveWrite() vs. exec()</h3></div></div></div><p>
Say you wanted to use SSH to get the contents of a directory. If you used <code class="code">interactiveWrite('ls')</code> to do this, and then <code class="code">interactiveRead()</code> to get the output, you, in all likelihood, wouldn't get the whole output. You'd have to call <code class="code">interactiveRead()</code> multiple times - you'd have to call it as many times as it took for you to get the complete output, which, in turn, begs the question... how do you know when you have the complete output?
You could assume that whenever the prompt (eg. <code class="code">root@desktop:/root#</code>) showed up, that that'd mean you had the complete output, but that's not fool proof. And what about messages of the day? The first <code class="code">interactiveRead()</code> you do is liable to include a part of that rather than the directory listing. So, not only do you have to make some sort of guestimate as to when the output ends - you often may have to guestimate as to when it begins.
</p><p>
To top it all off, you may also get <a class="ulink" href="http://en.wikipedia.org/wiki/ANSI_escape_code" target="_top">ANSI escape codes</a> interspersed amongst the output, which would need to be removed.
</p><p>
Using <code class="code">exec('ls')</code> resolves all of these issues. If you're implementing an interactive client, the interactive functions are the ones you'll want to use. Otherwise, <code class="code">exec()</code> is likely what you'll want to use.
</p><p>
interactiveRead() / interactiveWrite() are not implemented in Net_SSH2. The SSH-2 protocol supports them, however, phpseclib does not. The reasons are discussed in the <a class="link" href="net.html#net_ssh_exec" title="5.1.6. SSH-1's exec() vs. SSH-2's exec()">SSH-1's exec() vs. SSH-2's exec()</a> section.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_ssh_exec"></a>5.1.6. SSH-1's exec() vs. SSH-2's exec()</h3></div></div></div><p>
<code class="code">exec()</code> works by creating a channel, issuing a command, and then subsequently destroying that channel. Since SSH-1 <a class="ulink" href="http://www.snailbook.com/faq/ssh-1-vs-2.auto.html" target="_top">only allows one channel</a>, exec() can only be called once. SSH-2, in contrast, allows an unlimited number of channels, and as such, you can perform as many <code class="code">exec()</code>'s as you see fit.
</p><p>
As a consequence of this difference, Net_SSH2 does not implement <a class="link" href="net.html#net_ssh_interactive" title="5.1.5. interactiveRead() / interactiveWrite() vs. exec()">interactiveRead() / interactiveWrite()</a>, even though the SSH-2 specifications provide for those functions. Simply put, in SSH-1, those functions are necessary to do multiple commands. In SSH-2, they're not, and so they're not implemented.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_ssh_successive"></a>5.1.7. Successive calls to SSH-2's exec()</h3></div></div></div><p>
Successive calls to SSH-2's exec() may not work as expected. Consider the following:
</p><pre class="programlisting">&lt;?php
include('Net/SSH2.php');
$ssh = new Net_SSH2('www.domain.tld');
if (!$ssh-&gt;login('username', 'password')) {
exit('Login Failed');
}
echo $ssh-&gt;exec('pwd');
echo $ssh-&gt;exec('cd /');
echo $ssh-&gt;exec('pwd');
?&gt;</pre><p>
If done on an interactive shell, the output you'd receive for the first <code class="code">pwd</code> would (depending on how your system is setup) be different than the output of the second <code class="code">pwd</code>. The above code snippet, however, will yield two identical lines. The reason for this is that any "state changes" you make to the one-time shell are gone once the <code class="code">exec()</code> has been ran and the channel has been deleted.
As such, if you want to support <code class="code">cd</code> in your program, it'd be best to just handle that internally and rewrite all commands, before they're passed to <code class="code">exec()</code> such that the relative paths are expanded to the absolute paths.
Alternatively, one could always run a shell script, however, that may not always be an option.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_ssh_debug"></a>5.1.8. Debugging SSH-2</h3></div></div></div><p>
To log output, the NET_SSH2_LOGGING constant will need to be defined. If you want full logs, you'll need to do <code class="code">define('NET_SSH2_LOGGING', NET_SSH2_LOG_COMPLEX)</code>. <code class="code">$ssh-&gt;getLog()</code> will then return a string containing the unencrypted packets in hex and ASCII. If you want to just record the packet types that are being sent to and fro, you'll need to do <code class="code">define('NET_SSH2_LOGGING', NET_SSH2_LOG_SIMPLE)</code>. <code class="code">$ssh-&gt;getLog()</code> will then return an array. Both log types include the amount of time it took to send the packet in question. The former is useful for general diagnostics and the latter is more useful for profiling. An example follows:
</p><pre class="programlisting">&lt;?php
include('Net/SSH2.php');
define('NET_SSH2_LOGGING', NET_SSH2_LOG_COMPLEX);
$ssh = new Net_SSH2('www.domain.tld');
if (!$ssh-&gt;login('username', 'password')) {
exit('Login Failed');
}
echo $ssh-&gt;exec('pwd');
echo $ssh-&gt;getLog();
?&gt;</pre><p>
Depending on the problem, it may be more effective to just look at the output of <code class="code">$ssh-&gt;getLastError()</code> (which returns a string) and <code class="code">$ssh-&gt;getErrors()</code> (which returns an array) than to sift through the logs.
</p></div></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="net_sftp"></a>5.2. Net_SFTP</h2></div></div></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_sftp_intro"></a>5.2.1. Introduction</h3></div></div></div><p>
Net_SFTP currently only supports SFTPv3, which, according to wikipedia.org, "is the most widely used
version, implemented by the popular OpenSSH SFTP server".
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_sftp_dependencies"></a>5.2.2. Dependencies</h3></div></div></div><p>
Net_SFTP requires, minimally, PHP 4.3.0 and Net/SSH2.php, Math/BigInteger.php, Crypt/*.php, and PHP/Compat/Function/*.php.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_sftp_example"></a>5.2.3. Net_SFTP Example</h3></div></div></div><pre class="programlisting">&lt;?php
include('Net/SFTP.php');
$sftp = new Net_SFTP('www.domain.tld');
if (!$sftp-&gt;login('username', 'password')) {
exit('Login Failed');
}
echo $sftp-&gt;pwd() . "\r\n";
$sftp-&gt;put('filename.ext', 'hello, world!');
print_r($sftp-&gt;nlist());
?&gt;</pre></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_sftp_put"></a>5.2.4. put($remote_file, $data [, $mode])</h3></div></div></div><p>
By default, put() does not read from the local filesystem. $data is dumped directly into $remote_file.
So, for example, if you set $data to 'filename.ext' and then do get(), you will get a file, twelve bytes
long, containing 'filename.ext' as its contents.
</p><p>
Setting $mode to NET_SFTP_LOCAL_FILE will change the above behavior. With NET_SFTP_LOCAL_FILE, $remote_file will
contain as many bytes as filename.ext does on your local filesystem. If your filename.ext is 1MB then that is how
large $remote_file will be, as well.
</p><p>
Currently, only binary mode is supported. As such, if the line endings need to be adjusted, you will need to take
care of that, yourself.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_sftp_get"></a>5.2.5. get($remote_file [, $local_file])</h3></div></div></div><p>
Returns a string containing the contents of $remote_file if $local_file is left undefined or a boolean false if
the operation was unsuccessful. If $local_file is defined, returns true or false depending on the success of the
operation
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_sftp_pwd"></a>5.2.6. pwd(), chdir(), mkdir() and rmdir()</h3></div></div></div><p>
pwd() returns the current directory, chdir() changes directories, mkdir() creates direcotires, and rmdir() removes directories.
In the event of failure, they all return false. chdir(), mkdir(), and rmdir() return true on successful completion of the operation.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_sftp_chmod"></a>5.2.7. chmod() and size()</h3></div></div></div><p>
chmod() sets the permissions on a file and returns the new file permissions on success or false on error. Permissions are expected to be in octal so to set a file to 777 do <code class="code">$sftp-&gt;chmod(0777, $filename)</code>
</p><p>
size() returns the size, in bytes, of an arbitrary file.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_sftp_nlist"></a>5.2.8. nlist() and rawlist()</h3></div></div></div><p>
nlist($dir = '.') returns the contents of the current directory as a numerically indexed array and rawlist() returns an associate array where the filenames are the array keys and the array values are, themselves, arrays containing the file attributes. The directory can be changed with the first parameter.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_sftp_delete"></a>5.2.9. delete() and rename()</h3></div></div></div><p>
The purpose of both functions should be easy enough to glean - delete() deletes files or directories and rename() renames them. Both return true on success and false on failure.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="net_sftp_debug"></a>5.2.10. Debugging SFTP</h3></div></div></div><p>
Debbuging SFTP connections in phpseclib works in a manner similar to <a class="link" href="net.html#net_ssh_debug" title="5.1.8. Debugging SSH-2">debugging SSH-2</a> Instead of the constant being NET_SSH2_LOGGING, however, it's <code class="code">NET_SFTP_LOGGING</code>. And instead of NET_SSH2_LOG_COMPLEX or NET_SSH2_LOG_SIMPLE it's NET_SFTP_LOG_COMPLEX or NET_SFTP_LOG_SIMPLE respectively. And instead of calling $sftp-&gt;getLog() you call <code class="code">$sftp-&gt;getSFTPLog()</code> or <code class="code">$sftp-&gt;getLastSFTPError()</code> or whatever.
</p></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="misc_crypt.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> </td></tr><tr><td width="40%" align="left" valign="top">Chapter 4. Miscellaneous Cryptography </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>

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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 3. Symmetric-key Cryptography</title><link rel="stylesheet" href="docbook.css" type="text/css" /><meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /><link rel="start" href="index.html" title="PHP Secure Communications Library" /><link rel="up" href="index.html" title="PHP Secure Communications Library" /><link rel="prev" href="math.html" title="Chapter 2. Math" /><link rel="next" href="misc_crypt.html" title="Chapter 4. Miscellaneous Cryptography" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 3. Symmetric-key Cryptography</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="math.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="misc_crypt.html">Next</a></td></tr></table><hr /></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="sym_crypt"></a>Chapter 3. Symmetric-key Cryptography</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="sym_crypt.html#sym_crypt_intro">3.1. Introduction</a></span></dt><dd><dl><dt><span class="section"><a href="sym_crypt.html#sym_crypt_dependencies">3.1.1. Dependencies</a></span></dt><dt><span class="section"><a href="sym_crypt.html#sym_crypt_set">3.1.2. setKey() and setIV()</a></span></dt><dt><span class="section"><a href="sym_crypt.html#sym_crypt_encrypt">3.1.3. encrypt() and decrypt()</a></span></dt><dt><span class="section"><a href="sym_crypt.html#sym_crypt_continuousbuffer">3.1.4. enableContinuousBuffer() and disableContinuousBuffer()</a></span></dt><dt><span class="section"><a href="sym_crypt.html#sym_crypt_padding">3.1.5. enablePadding() and disablePadding()</a></span></dt><dt><span class="section"><a href="sym_crypt.html#sym_crypt_caution">3.1.6. A word of caution about stream ciphers and CTR mode</a></span></dt></dl></dd><dt><span class="section"><a href="sym_crypt.html#sym_crypt_des">3.2. Crypt_DES</a></span></dt><dd><dl><dt><span class="section"><a href="sym_crypt.html#sym_crypt_des_constructor">3.2.1. The constructor</a></span></dt></dl></dd><dt><span class="section"><a href="sym_crypt.html#sym_crypt_tripledes">3.3. Crypt_TripleDES</a></span></dt><dd><dl><dt><span class="section"><a href="sym_crypt.html#sym_crypt_tripledes_constructor">3.3.1. The constructor</a></span></dt></dl></dd><dt><span class="section"><a href="sym_crypt.html#sym_crypt_rc4">3.4. Crypt_RC4</a></span></dt><dd><dl><dt><span class="section"><a href="sym_crypt.html#sym_crypt_rc4_constructor">3.4.1. The constructor</a></span></dt></dl></dd><dt><span class="section"><a href="sym_crypt.html#sym_crypt_aes">3.5. Crypt_Rijndael &amp; Crypt_AES</a></span></dt><dd><dl><dt><span class="section"><a href="sym_crypt.html#sym_crypt_aes_constructor">3.5.1. The constructor</a></span></dt><dt><span class="section"><a href="sym_crypt.html#sym_crypt_aes_vs_rijndael">3.5.2. AES vs. Rijndael</a></span></dt><dt><span class="section"><a href="sym_crypt.html#sym_crypt_aes_setkeylength">3.5.3. setKeyLength()</a></span></dt><dt><span class="section"><a href="sym_crypt.html#sym_crypt_aes_setblocklength">3.5.4. setBlockLength()</a></span></dt><dt><span class="section"><a href="sym_crypt.html#sym_crypt_aes_benchmarks">3.5.5. Speed Comparisons</a></span></dt></dl></dd></dl></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="sym_crypt_intro"></a>3.1. Introduction</h2></div></div></div><p>
All of the cryptographic libraries included in phpseclib use mcrypt, if available, and an internal implementation
if it's not. The libraries all use a common interface although some functions, for some algorithms, carry with
with them certain caveats. Those that do not have caveats attached (or have relatively few attached) are
described below. If you don't know which one to use, try <code class="code">Crypt_TripleDES</code>.
</p><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="sym_crypt_dependencies"></a>3.1.1. Dependencies</h3></div></div></div><p>
The Crypt_* functions require, minimally, PHP 4.0.0. Crypt_TripleDES additionally requires Crypt/DES.php.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="sym_crypt_set"></a>3.1.2. setKey() and setIV()</h3></div></div></div><p>
Sets the key and the initialization vector, respectively. If neither are set, each assumed to be equal to
some amount of null bytes. The initialization vector is only used in block ciphers and even then only
in CBC mode. If the key or the initialization vector are larger then the block size, they're truncated.
If they're smaller, they're padded with null bytes.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="sym_crypt_encrypt"></a>3.1.3. encrypt() and decrypt()</h3></div></div></div><p>
Self-explanatory. Encrypts or decrypts messages. See the examples in the subsequent sections.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="sym_crypt_continuousbuffer"></a>3.1.4. enableContinuousBuffer() and disableContinuousBuffer()</h3></div></div></div><p>
If the continuous buffer is enabled and you're using a stream cipher or a block cipher mode other than ECB then encrypting the same string twice will yield different ciphertexts.
The reason being that the IV doesn't reset after each encryption / decryption round when the continuous buffer is used.
This provides better security but it may also make for less intuitive behavior.
For this reason, the continuous buffer is disabled by default.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="sym_crypt_padding"></a>3.1.5. enablePadding() and disablePadding()</h3></div></div></div><p>
Enables / disables PKCS padding on block ciphers. Stream ciphers (<code class="code">Crypt_RC4</code> is the only stream
cipher currently included) ignore this.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="sym_crypt_caution"></a>3.1.6. A word of caution about stream ciphers and CTR mode</h3></div></div></div><p>
Most stream ciphers (and block ciphers operating in a mode - like CTR - that turns them into stream ciphers) work by generating a stream of pseudorandom characters called a <a class="ulink" href="http://en.wikipedia.org/wiki/Keystream" target="_top">keystream</a> and then XOR'ing that with the plaintext.
This *effectively* makes them <a class="ulink" href="http://en.wikipedia.org/wiki/One-time_pad" target="_top">one-time pads</a> which, in theory, can provide perfect secrecy. The problem with one-time pads is that they're not as versatile as one might desire.
Among other things, a keystream must never be reset, lest it be possible for an attacker to recover the keystream via a <a class="ulink" href="http://en.wikipedia.org/wiki/Known-plaintext_attack" target="_top">known-plaintext attack</a>. ie. <code class="code">$ciphertext ^ $plaintext = $key</code>. If <code class="code">$key</code> is constant (because the keystream's being reset or something) than an attacker can recover any <code class="code">$plaintext</code>, but if not - if it's dynamic - then the only key that an attacker could recover is their own.
</p></div></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="sym_crypt_des"></a>3.2. Crypt_DES</h2></div></div></div><p>
Implements DES (a block cipher). Here's an example of how to use it:
</p><pre class="programlisting">&lt;?php
include('Crypt/DES.php');
$des = new Crypt_DES();
$des-&gt;setKey('abcdefgh');
$size = 10 * 1024;
$plaintext = '';
for ($i = 0; $i &lt; $size; $i++) {
$plaintext.= 'a';
}
echo $des-&gt;decrypt($des-&gt;encrypt($plaintext));
?&gt;</pre><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="sym_crypt_des_constructor"></a>3.2.1. The constructor</h3></div></div></div><p>
The constructor takes one optional parameter - $mode. Valid values for $mode are as follows:
</p><div class="itemizedlist"><ul type="disc"><li><code class="code">CRYPT_DES_MODE_ECB</code></li><li><code class="code">CRYPT_DES_MODE_CBC</code>: The default value.</li><li><code class="code">CRYPT_DES_MODE_CTR</code></li></ul></div></div></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="sym_crypt_tripledes"></a>3.3. Crypt_TripleDES</h2></div></div></div><p>
Implements TripleDES (a block cipher). Here's an example of how to use it:
</p><pre class="programlisting">&lt;?php
include('Crypt/TripleDES.php');
$des = new Crypt_TripleDES();
$des-&gt;setKey('abcdefghijklmnopqrstuvwx');
$size = 10 * 1024;
$plaintext = '';
for ($i = 0; $i &lt; $size; $i++) {
$plaintext.= 'a';
}
echo $des-&gt;decrypt($des-&gt;encrypt($plaintext));
?&gt;</pre><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="sym_crypt_tripledes_constructor"></a>3.3.1. The constructor</h3></div></div></div><p>
The constructor takes one optional parameter - $mode. Valid values for $mode are as follows:
</p><div class="itemizedlist"><ul type="disc"><li><code class="code">CRYPT_DES_MODE_ECB</code></li><li><code class="code">CRYPT_DES_MODE_CBC3</code>: Employs outer chaining to propogate the initialization vector. Used by SSH-2 and generally considered more secure than inner chaining.</li><li><code class="code">CRYPT_DES_MODE_3CBC</code>: Employs inner chaining to propogate the initialization vector. Used by SSH-1.</li><li><code class="code">CRYPT_DES_MODE_CBC</code>: The default value. An alias for <code class="code">CRYPT_DES_MODE_CBC3</code>.</li><li><code class="code">CRYPT_DES_MODE_CTR</code></li></ul></div></div></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="sym_crypt_rc4"></a>3.4. Crypt_RC4</h2></div></div></div><p>
Implements RC4 (a stream cipher). Here's an example of how to use it:
</p><pre class="programlisting">&lt;?php
include('Crypt/RC4.php');
$rc4 = new Crypt_RC4();
$rc4-&gt;setKey('abcdefghijklmnopqrstuvwx');
$size = 10 * 1024;
$plaintext = '';
for ($i = 0; $i &lt; $size; $i++) {
$plaintext.= 'a';
}
echo $rc4-&gt;decrypt($rc4-&gt;encrypt($plaintext));
?&gt;</pre><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="sym_crypt_rc4_constructor"></a>3.4.1. The constructor</h3></div></div></div><p>
Not much to say about this constructor. Since it's a stream cipher, you don't need to worry about which
mode of operation to use.
</p></div></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="sym_crypt_aes"></a>3.5. Crypt_Rijndael &amp; Crypt_AES</h2></div></div></div><p>
Implements Rijndael / AES. Here's an example of how to use Crypt_AES:
</p><pre class="programlisting">&lt;?php
include('Crypt/AES.php');
$aes = new Crypt_AES();
$aes-&gt;setKey('abcdefghijklmnop');
$size = 10 * 1024;
$plaintext = '';
for ($i = 0; $i &lt; $size; $i++) {
$plaintext.= 'a';
}
echo $aes-&gt;decrypt($aes-&gt;encrypt($plaintext));
?&gt;</pre><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="sym_crypt_aes_constructor"></a>3.5.1. The constructor</h3></div></div></div><p>
<code class="code">Crypt_AES</code>'s constructor's optional parameter can take the following values:
</p><div class="itemizedlist"><ul type="disc"><li><code class="code">CRYPT_AES_MODE_ECB</code></li><li><code class="code">CRYPT_AES_MODE_CBC</code>: The default value.</li><li><code class="code">CRYPT_AES_MODE_CTR</code></li></ul></div><p>
<code class="code">Crypt_Rijndael</code> takes the following:
</p><div class="itemizedlist"><ul type="disc"><li><code class="code">CRYPT_RIJNDAEL_MODE_ECB</code></li><li><code class="code">CRYPT_RIJNDAEL_MODE_CBC</code>: The default value.</li><li><code class="code">CRYPT_RIJNDAEL_MODE_CTR</code></li></ul></div></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="sym_crypt_aes_vs_rijndael"></a>3.5.2. AES vs. Rijndael</h3></div></div></div><p>
AES is a subset of Rijndael. Both have variable key sizes, however, AES's block size is fixed at 128 bits, whereas Rijndael's is variable. Also, Rijndael supports, by means of an extension to the specification, two key sizes that AES does not - 160 bits and 224 bits.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="sym_crypt_aes_setkeylength"></a>3.5.3. setKeyLength()</h3></div></div></div><p>
Valid key lengths for AES are 128 bits, 192 bits, and 256 bits. If the key that is assigned is invalid and less than 256 bits, they key length is rounded up to the next closest valid size and the key will be null padded to that amount. If the key length is greater than 256 bits, it will be truncated to 256 bits.
</p><p>
As an example, if the key is 136 bits, it will be null padded to 192 bits (or 160 bits if Rijndael is being used).
</p><p>
If <code class="code">setKeyLength()</code> has been called, this behavior changes somewhat. Say you've set the key length, via this function, to 256 bits. Then, instead of an invalid key being null padded to 192 or 160 bits, it will be null padded to 256 bits.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="sym_crypt_aes_setblocklength"></a>3.5.4. setBlockLength()</h3></div></div></div><p>
<code class="code">setBlockLength()</code> operates in a manner similar to <code class="code">setKeyLength()</code>, with one exception. <code class="code">setBlockLength()</code> only works on Rijndael. Although <code class="code">Crypt_AES</code> inherits <code class="code">setBlockLength()</code> as a function, the function doesn't do anything in AES.
</p></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="sym_crypt_aes_benchmarks"></a>3.5.5. Speed Comparisons</h3></div></div></div><p>
The following table compares the speed of five different pure-PHP implementations of AES (one of which is Crypt_Rijndael and one of which is Crypt_AES) when ran on 150KB of text on a 1.8GHz Pentium 4-M. The numbers listed are averaged from five different trials and are measured in seconds. phpseclib's two implementations are highlighted. All implementations can be viewed by clicking on their names.
</p><div class="table"><a id="sym_crypt_aes_benchmarks_table"></a><p class="title"><b>Table 3.1. AES Speed Comparisons</b></p><div class="table-contents"><table summary="AES Speed Comparisons" border="1"><colgroup><col /><col /><col /><col /><col /></colgroup><thead><tr><th align="right"><a class="ulink" href="http://phpseclib.sourceforge.net/movable-type.phps" target="_top">movable-type.phps</a></th><th align="right"><a class="ulink" href="http://phpseclib.sourceforge.net/phpaes.phps" target="_top">phpaes.phps</a></th><th align="right"><a class="ulink" href="http://phpseclib.sourceforge.net/phpclasses1.phps" target="_top">phpclasses1.phps</a></th><th align="right"><a class="ulink" href="http://phpseclib.sourceforge.net/phpclasses2.phps" target="_top">phpclasses2.phps</a></th><th align="right"><a class="ulink" href="http://phpseclib.sourceforge.net/phpseclib-aes.phps" target="_top">phpseclib-aes.phps</a></th><th align="right"><a class="ulink" href="http://phpseclib.sourceforge.net/phpseclib-rijndael.phps" target="_top">phpseclib-rijndael.phps</a></th></tr></thead><tbody><tr><td align="right">15.6844158172</td><td align="right">39.9537248135</td><td align="right">15.0100150108</td><td align="right">62.591713190079</td><td class="highlight" align="right">2.03581542968752</td><td class="highlight" align="right">2.62501101493836</td></tr></tbody></table></div></div><br class="table-break" /><p>
As can be seen, phpseclib's implementations are the fastest. phpseclib-aes.phps is faster than phpseclib-rijndael.phps because phpseclib-rijndael.phps has to contend with multiple block sizes whereas phpseclib-aes.phps does not. Note that if mcrypt weren't explicitily disabled phpseclib would have been even faster.
</p></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="math.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="misc_crypt.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 2. Math </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 4. Miscellaneous Cryptography</td></tr></table></div></body></html>

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@ -761,62 +761,57 @@ function admin_page_site_post(App $a) {
} else {
set_config('system','singleuser', $singleuser);
}
set_config('system','maximagesize', $maximagesize);
set_config('system','max_image_length', $maximagelength);
set_config('system','jpeg_quality', $jpegimagequality);
set_config('system', 'maximagesize', $maximagesize);
set_config('system', 'max_image_length', $maximagelength);
set_config('system', 'jpeg_quality', $jpegimagequality);
set_config('config','register_policy', $register_policy);
set_config('system','max_daily_registrations', $daily_registrations);
set_config('system','account_abandon_days', $abandon_days);
set_config('config','register_text', $register_text);
set_config('system','allowed_sites', $allowed_sites);
set_config('system','allowed_email', $allowed_email);
set_config('system','block_public', $block_public);
set_config('system','publish_all', $force_publish);
set_config('system','directory', $global_directory);
set_config('system','thread_allow', $thread_allow);
set_config('system','newuser_private', $newuser_private);
set_config('system','enotify_no_content', $enotify_no_content);
set_config('system','disable_embedded', $disable_embedded);
set_config('system','allow_users_remote_self', $allow_users_remote_self);
set_config('config', 'register_policy', $register_policy);
set_config('system', 'max_daily_registrations', $daily_registrations);
set_config('system', 'account_abandon_days', $abandon_days);
set_config('config', 'register_text', $register_text);
set_config('system', 'allowed_sites', $allowed_sites);
set_config('system', 'allowed_email', $allowed_email);
set_config('system', 'block_public', $block_public);
set_config('system', 'publish_all', $force_publish);
set_config('system', 'directory', $global_directory);
set_config('system', 'thread_allow', $thread_allow);
set_config('system', 'newuser_private', $newuser_private);
set_config('system', 'enotify_no_content', $enotify_no_content);
set_config('system', 'disable_embedded', $disable_embedded);
set_config('system', 'allow_users_remote_self', $allow_users_remote_self);
set_config('system','block_extended_register', $no_multi_reg);
set_config('system','no_openid', $no_openid);
set_config('system','no_regfullname', $no_regfullname);
set_config('system','community_page_style', $community_page_style);
set_config('system','max_author_posts_community_page', $max_author_posts_community_page);
set_config('system','verifyssl', $verifyssl);
set_config('system','proxyuser', $proxyuser);
set_config('system','proxy', $proxy);
set_config('system','curl_timeout', $timeout);
set_config('system','dfrn_only', $dfrn_only);
set_config('system','ostatus_disabled', $ostatus_disabled);
set_config('system','ostatus_poll_interval', $ostatus_poll_interval);
set_config('system','ostatus_full_threads', $ostatus_full_threads);
set_config('system','diaspora_enabled', $diaspora_enabled);
set_config('system', 'block_extended_register', $no_multi_reg);
set_config('system', 'no_openid', $no_openid);
set_config('system', 'no_regfullname', $no_regfullname);
set_config('system', 'community_page_style', $community_page_style);
set_config('system', 'max_author_posts_community_page', $max_author_posts_community_page);
set_config('system', 'verifyssl', $verifyssl);
set_config('system', 'proxyuser', $proxyuser);
set_config('system', 'proxy', $proxy);
set_config('system', 'curl_timeout', $timeout);
set_config('system', 'dfrn_only', $dfrn_only);
set_config('system', 'ostatus_disabled', $ostatus_disabled);
set_config('system', 'ostatus_poll_interval', $ostatus_poll_interval);
set_config('system', 'ostatus_full_threads', $ostatus_full_threads);
set_config('system', 'diaspora_enabled', $diaspora_enabled);
set_config('config','private_addons', $private_addons);
set_config('config', 'private_addons', $private_addons);
set_config('system','force_ssl', $force_ssl);
set_config('system','hide_help', $hide_help);
set_config('system','use_fulltext_engine', $use_fulltext_engine);
set_config('system','itemcache', $itemcache);
set_config('system','itemcache_duration', $itemcache_duration);
set_config('system','max_comments', $max_comments);
set_config('system','temppath', $temppath);
set_config('system','basepath', $basepath);
set_config('system','proxy_disabled', $proxy_disabled);
set_config('system','only_tag_search', $only_tag_search);
set_config('system','worker_queues', $worker_queues);
set_config('system','worker_dont_fork', $worker_dont_fork);
set_config('system','worker_fastlane', $worker_fastlane);
set_config('system','frontend_worker', $worker_frontend);
if (($rino == 2) and !function_exists('mcrypt_create_iv')) {
notice(t("RINO2 needs mcrypt php extension to work."));
} else {
set_config('system','rino_encrypt', $rino);
}
set_config('system', 'force_ssl', $force_ssl);
set_config('system', 'hide_help', $hide_help);
set_config('system', 'use_fulltext_engine', $use_fulltext_engine);
set_config('system', 'itemcache', $itemcache);
set_config('system', 'itemcache_duration', $itemcache_duration);
set_config('system', 'max_comments', $max_comments);
set_config('system', 'temppath', $temppath);
set_config('system', 'basepath', $basepath);
set_config('system', 'proxy_disabled', $proxy_disabled);
set_config('system', 'only_tag_search', $only_tag_search);
set_config('system', 'worker_queues', $worker_queues);
set_config('system', 'worker_dont_fork', $worker_dont_fork);
set_config('system', 'worker_fastlane', $worker_fastlane);
set_config('system', 'frontend_worker', $worker_frontend);
set_config('system', 'rino_encrypt', $rino);
info(t('Site settings updated.').EOL);
goaway('admin/site');

4
mod/dfrn_confirm.php
View file

@ -185,10 +185,10 @@ function dfrn_confirm_post(App $a, $handsfree = null) {
*
*/
$src_aes_key = random_string();
$src_aes_key = openssl_random_pseudo_bytes(64);
$result = '';
openssl_private_encrypt($dfrn_id,$result,$user[0]['prvkey']);
openssl_private_encrypt($dfrn_id, $result, $user[0]['prvkey']);
$params['dfrn_id'] = bin2hex($result);
$params['public_key'] = $public_key;

6
mod/dfrn_notify.php
View file

@ -142,8 +142,6 @@ function dfrn_notify_post(App $a) {
$rino = get_config('system','rino_encrypt');
$rino = intval($rino);
// use RINO1 if mcrypt isn't installed and RINO2 was selected
if ($rino==2 and !function_exists('mcrypt_create_iv')) $rino=1;
logger("Local rino version: ". $rino, LOGGER_DEBUG);
@ -184,7 +182,7 @@ function dfrn_notify_post(App $a) {
case 1:
// we got a key. old code send only the key, without RINO version.
// we assume RINO 1 if key and no RINO version
$data = aes_decrypt(hex2bin($data),$final_key);
$data = dfrn::aes_decrypt(hex2bin($data),$final_key);
break;
case 2:
try {
@ -315,8 +313,6 @@ function dfrn_notify_content(App $a) {
$rino = get_config('system','rino_encrypt');
$rino = intval($rino);
// use RINO1 if mcrypt isn't installed and RINO2 was selected
if ($rino==2 and !function_exists('mcrypt_create_iv')) $rino=1;
logger("Local rino version: ". $rino, LOGGER_DEBUG);

24
mod/install.php
View file

@ -78,14 +78,7 @@ function install_post(App $a) {
$timezone = notags(trim($_POST['timezone']));
$language = notags(trim($_POST['language']));
$adminmail = notags(trim($_POST['adminmail']));
// In step 4 of the installer, we passed the check for mcrypt
// already, so we can activate RINO, make RINO2 the default
// and only fall back if the mcrypt_create_iv function is
// not available on the system.
$rino = 2;
if (! function_exists('mcrypt_create_iv')) {
$rino = 1;
}
// connect to db
$db = new dba($dbhost, $dbuser, $dbpass, $dbdata, true);
@ -422,7 +415,6 @@ function check_funcs(&$checks) {
check_add($ck_funcs, t('OpenSSL PHP module'), true, true, "");
check_add($ck_funcs, t('mysqli PHP module'), true, true, "");
check_add($ck_funcs, t('mb_string PHP module'), true, true, "");
check_add($ck_funcs, t('mcrypt PHP module'), true, true, "");
check_add($ck_funcs, t('XML PHP module'), true, true, "");
check_add($ck_funcs, t('iconv module'), true, true, "");
@ -454,10 +446,6 @@ function check_funcs(&$checks) {
$ck_funcs[4]['status']= false;
$ck_funcs[4]['help']= t('Error: mb_string PHP module required but not installed.');
}
if (! function_exists('mcrypt_create_iv')){
$ck_funcs[5]['status']= false;
$ck_funcs[5]['help']= t('Error: mcrypt PHP module required but not installed.');
}
if (! function_exists('iconv_strlen')){
$ck_funcs[7]['status']= false;
$ck_funcs[7]['help']= t('Error: iconv PHP module required but not installed.');
@ -465,18 +453,6 @@ function check_funcs(&$checks) {
$checks = array_merge($checks, $ck_funcs);
// check for 'mcrypt_create_iv()', needed for RINO2
if ($ck_funcs[5]['status']) {
if (function_exists('mcrypt_create_iv')) {
$__status = true;
$__help = t("If you are using php_cli, please make sure that mcrypt module is enabled in its config file");
} else {
$__status = false;
$__help = t('Function mcrypt_create_iv() is not defined. This is needed to enable RINO2 encryption layer.');
}
check_add($checks, t('mcrypt_create_iv() function'), $__status, false, $__help);
}
// check for XML DOM Documents being able to be generated
try {
$xml = new DOMDocument();

0
include/Core/Config.php → src/Core/Config.php
View file

0
include/Core/PConfig.php → src/Core/PConfig.php
View file

0
include/ParseUrl.php → src/ParseUrl.php
View file

BIN
util/composer.phar Executable file
View file

Binary file not shown.

7
vendor/autoload.php vendored Normal file
View file

@ -0,0 +1,7 @@
<?php
// autoload.php @generated by Composer
require_once __DIR__ . '/composer/autoload_real.php';
return ComposerAutoloaderInitFriendica::getLoader();

76
include/autoloader/ClassLoader.php → vendor/composer/ClassLoader.php vendored
View file

@ -6,16 +6,14 @@
* (c) Nils Adermann <naderman@naderman.de>
* Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE.composer
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Composer\Autoload;
/**
* ClassLoader implements a PSR-0 class loader
*
* See https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-0.md
* ClassLoader implements a PSR-0, PSR-4 and classmap class loader.
*
* $loader = new \Composer\Autoload\ClassLoader();
*
@ -39,6 +37,8 @@ namespace Composer\Autoload;
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Jordi Boggiano <j.boggiano@seld.be>
* @see http://www.php-fig.org/psr/psr-0/
* @see http://www.php-fig.org/psr/psr-4/
*/
class ClassLoader
{
@ -53,8 +53,9 @@ class ClassLoader
private $useIncludePath = false;
private $classMap = array();
private $classMapAuthoritative = false;
private $missingClasses = array();
private $apcuPrefix;
public function getPrefixes()
{
@ -147,7 +148,7 @@ class ClassLoader
* appending or prepending to the ones previously set for this namespace.
*
* @param string $prefix The prefix/namespace, with trailing '\\'
* @param array|string $paths The PSR-0 base directories
* @param array|string $paths The PSR-4 base directories
* @param bool $prepend Whether to prepend the directories
*
* @throws \InvalidArgumentException
@ -271,6 +272,26 @@ class ClassLoader
return $this->classMapAuthoritative;
}
/**
* APCu prefix to use to cache found/not-found classes, if the extension is enabled.
*
* @param string|null $apcuPrefix
*/
public function setApcuPrefix($apcuPrefix)
{
$this->apcuPrefix = function_exists('apcu_fetch') && ini_get('apc.enabled') ? $apcuPrefix : null;
}
/**
* The APCu prefix in use, or null if APCu caching is not enabled.
*
* @return string|null
*/
public function getApcuPrefix()
{
return $this->apcuPrefix;
}
/**
* Registers this instance as an autoloader.
*
@ -313,29 +334,34 @@ class ClassLoader
*/
public function findFile($class)
{
// work around for PHP 5.3.0 - 5.3.2 https://bugs.php.net/50731
if ('\\' == $class[0]) {
$class = substr($class, 1);
}
// class map lookup
if (isset($this->classMap[$class])) {
return $this->classMap[$class];
}
if ($this->classMapAuthoritative) {
if ($this->classMapAuthoritative || isset($this->missingClasses[$class])) {
return false;
}
if (null !== $this->apcuPrefix) {
$file = apcu_fetch($this->apcuPrefix.$class, $hit);
if ($hit) {
return $file;
}
}
$file = $this->findFileWithExtension($class, '.php');
// Search for Hack files if we are running on HHVM
if ($file === null && defined('HHVM_VERSION')) {
if (false === $file && defined('HHVM_VERSION')) {
$file = $this->findFileWithExtension($class, '.hh');
}
if ($file === null) {
if (null !== $this->apcuPrefix) {
apcu_add($this->apcuPrefix.$class, $file);
}
if (false === $file) {
// Remember that this class does not exist.
return $this->classMap[$class] = false;
$this->missingClasses[$class] = true;
}
return $file;
@ -348,10 +374,14 @@ class ClassLoader
$first = $class[0];
if (isset($this->prefixLengthsPsr4[$first])) {
foreach ($this->prefixLengthsPsr4[$first] as $prefix => $length) {
if (0 === strpos($class, $prefix)) {
foreach ($this->prefixDirsPsr4[$prefix] as $dir) {
if (is_file($file = $dir . DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $length))) {
$subPath = $class;
while (false !== $lastPos = strrpos($subPath, '\\')) {
$subPath = substr($subPath, 0, $lastPos);
$search = $subPath.'\\';
if (isset($this->prefixDirsPsr4[$search])) {
foreach ($this->prefixDirsPsr4[$search] as $dir) {
$length = $this->prefixLengthsPsr4[$first][$search];
if (file_exists($file = $dir . DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $length))) {
return $file;
}
}
@ -361,7 +391,7 @@ class ClassLoader
// PSR-4 fallback dirs
foreach ($this->fallbackDirsPsr4 as $dir) {
if (is_file($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr4)) {
if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr4)) {
return $file;
}
}
@ -380,7 +410,7 @@ class ClassLoader
foreach ($this->prefixesPsr0[$first] as $prefix => $dirs) {
if (0 === strpos($class, $prefix)) {
foreach ($dirs as $dir) {
if (is_file($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
return $file;
}
}
@ -390,7 +420,7 @@ class ClassLoader
// PSR-0 fallback dirs
foreach ($this->fallbackDirsPsr0 as $dir) {
if (is_file($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
return $file;
}
}
@ -399,6 +429,8 @@ class ClassLoader
if ($this->useIncludePath && $file = stream_resolve_include_path($logicalPathPsr0)) {
return $file;
}
return false;
}
}

40
include/autoloader/LICENSE.composer → vendor/composer/LICENSE vendored
View file

@ -1,19 +1,21 @@
Copyright (c) 2015 Nils Adermann, Jordi Boggiano
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the Software), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, andor sell
copies of the Software, and to permit persons to whom the Software is furnished
to do so, subject to the following conditions
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
Copyright (c) Nils Adermann, Jordi Boggiano
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is furnished
to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

243
vendor/composer/autoload_classmap.php vendored Normal file
View file

@ -0,0 +1,243 @@
<?php
// autoload_classmap.php @generated by Composer
$vendorDir = dirname(dirname(__FILE__));
$baseDir = dirname($vendorDir);
return array(
'Detection\\MobileDetect' => $vendorDir . '/mobiledetect/mobiledetectlib/namespaced/Detection/MobileDetect.php',
'Friendica\\Core\\Config' => $baseDir . '/src/Core/Config.php',
'Friendica\\Core\\PConfig' => $baseDir . '/src/Core/PConfig.php',
'Friendica\\ParseUrl' => $baseDir . '/src/ParseUrl.php',
'HTMLPurifier' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier.php',
'HTMLPurifier_Arborize' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/Arborize.php',
'HTMLPurifier_AttrCollections' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrCollections.php',
'HTMLPurifier_AttrDef' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef.php',
'HTMLPurifier_AttrDef_CSS' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS.php',
'HTMLPurifier_AttrDef_CSS_AlphaValue' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/AlphaValue.php',
'HTMLPurifier_AttrDef_CSS_Background' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Background.php',
'HTMLPurifier_AttrDef_CSS_BackgroundPosition' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/BackgroundPosition.php',
'HTMLPurifier_AttrDef_CSS_Border' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Border.php',
'HTMLPurifier_AttrDef_CSS_Color' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Color.php',
'HTMLPurifier_AttrDef_CSS_Composite' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Composite.php',
'HTMLPurifier_AttrDef_CSS_DenyElementDecorator' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/DenyElementDecorator.php',
'HTMLPurifier_AttrDef_CSS_Filter' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Filter.php',
'HTMLPurifier_AttrDef_CSS_Font' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Font.php',
'HTMLPurifier_AttrDef_CSS_FontFamily' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/FontFamily.php',
'HTMLPurifier_AttrDef_CSS_Ident' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Ident.php',
'HTMLPurifier_AttrDef_CSS_ImportantDecorator' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/ImportantDecorator.php',
'HTMLPurifier_AttrDef_CSS_Length' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Length.php',
'HTMLPurifier_AttrDef_CSS_ListStyle' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/ListStyle.php',
'HTMLPurifier_AttrDef_CSS_Multiple' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Multiple.php',
'HTMLPurifier_AttrDef_CSS_Number' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Number.php',
'HTMLPurifier_AttrDef_CSS_Percentage' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Percentage.php',
'HTMLPurifier_AttrDef_CSS_TextDecoration' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/TextDecoration.php',
'HTMLPurifier_AttrDef_CSS_URI' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/URI.php',
'HTMLPurifier_AttrDef_Clone' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Clone.php',
'HTMLPurifier_AttrDef_Enum' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Enum.php',
'HTMLPurifier_AttrDef_HTML_Bool' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Bool.php',
'HTMLPurifier_AttrDef_HTML_Class' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Class.php',
'HTMLPurifier_AttrDef_HTML_Color' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Color.php',
'HTMLPurifier_AttrDef_HTML_FrameTarget' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/FrameTarget.php',
'HTMLPurifier_AttrDef_HTML_ID' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/ID.php',
'HTMLPurifier_AttrDef_HTML_Length' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Length.php',
'HTMLPurifier_AttrDef_HTML_LinkTypes' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/LinkTypes.php',
'HTMLPurifier_AttrDef_HTML_MultiLength' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/MultiLength.php',
'HTMLPurifier_AttrDef_HTML_Nmtokens' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Nmtokens.php',
'HTMLPurifier_AttrDef_HTML_Pixels' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Pixels.php',
'HTMLPurifier_AttrDef_Integer' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Integer.php',
'HTMLPurifier_AttrDef_Lang' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Lang.php',
'HTMLPurifier_AttrDef_Switch' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Switch.php',
'HTMLPurifier_AttrDef_Text' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Text.php',
'HTMLPurifier_AttrDef_URI' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI.php',
'HTMLPurifier_AttrDef_URI_Email' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/Email.php',
'HTMLPurifier_AttrDef_URI_Email_SimpleCheck' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/Email/SimpleCheck.php',
'HTMLPurifier_AttrDef_URI_Host' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/Host.php',
'HTMLPurifier_AttrDef_URI_IPv4' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/IPv4.php',
'HTMLPurifier_AttrDef_URI_IPv6' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/IPv6.php',
'HTMLPurifier_AttrTransform' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform.php',
'HTMLPurifier_AttrTransform_Background' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/Background.php',
'HTMLPurifier_AttrTransform_BdoDir' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/BdoDir.php',
'HTMLPurifier_AttrTransform_BgColor' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/BgColor.php',
'HTMLPurifier_AttrTransform_BoolToCSS' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/BoolToCSS.php',
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View file

@ -2,7 +2,7 @@
// autoload_files.php @generated by Composer
$vendorDir = dirname(dirname(dirname(__FILE__)))."/library";
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$baseDir = dirname($vendorDir);
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3
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View file

@ -2,9 +2,10 @@
// autoload_namespaces.php @generated by Composer
$vendorDir = dirname(dirname(dirname(__FILE__)))."/library";
$vendorDir = dirname(dirname(__FILE__));
$baseDir = dirname($vendorDir);
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10
vendor/composer/autoload_psr4.php vendored Normal file
View file

@ -0,0 +1,10 @@
<?php
// autoload_psr4.php @generated by Composer
$vendorDir = dirname(dirname(__FILE__));
$baseDir = dirname($vendorDir);
return array(
'Friendica\\' => array($baseDir . '/src'),
);

70
vendor/composer/autoload_real.php vendored Normal file
View file

@ -0,0 +1,70 @@
<?php
// autoload_real.php @generated by Composer
class ComposerAutoloaderInitFriendica
{
private static $loader;
public static function loadClassLoader($class)
{
if ('Composer\Autoload\ClassLoader' === $class) {
require __DIR__ . '/ClassLoader.php';
}
}
public static function getLoader()
{
if (null !== self::$loader) {
return self::$loader;
}
spl_autoload_register(array('ComposerAutoloaderInitFriendica', 'loadClassLoader'), true, true);
self::$loader = $loader = new \Composer\Autoload\ClassLoader();
spl_autoload_unregister(array('ComposerAutoloaderInitFriendica', 'loadClassLoader'));
$useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());
if ($useStaticLoader) {
require_once __DIR__ . '/autoload_static.php';
call_user_func(\Composer\Autoload\ComposerStaticInitFriendica::getInitializer($loader));
} else {
$map = require __DIR__ . '/autoload_namespaces.php';
foreach ($map as $namespace => $path) {
$loader->set($namespace, $path);
}
$map = require __DIR__ . '/autoload_psr4.php';
foreach ($map as $namespace => $path) {
$loader->setPsr4($namespace, $path);
}
$classMap = require __DIR__ . '/autoload_classmap.php';
if ($classMap) {
$loader->addClassMap($classMap);
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}
$loader->register(true);
if ($useStaticLoader) {
$includeFiles = Composer\Autoload\ComposerStaticInitFriendica::$files;
} else {
$includeFiles = require __DIR__ . '/autoload_files.php';
}
foreach ($includeFiles as $fileIdentifier => $file) {
composerRequireFriendica($fileIdentifier, $file);
}
return $loader;
}
}
function composerRequireFriendica($fileIdentifier, $file)
{
if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
require $file;
$GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
}
}

291
vendor/composer/autoload_static.php vendored Normal file
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@ -0,0 +1,291 @@
<?php
// autoload_static.php @generated by Composer
namespace Composer\Autoload;
class ComposerStaticInitFriendica
{
public static $files = array (
'2cffec82183ee1cea088009cef9a6fc3' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier.composer.php',
);
public static $prefixLengthsPsr4 = array (
'F' =>
array (
'Friendica\\' => 10,
),
);
public static $prefixDirsPsr4 = array (
'Friendica\\' =>
array (
0 => __DIR__ . '/../..' . '/src',
),
);
public static $prefixesPsr0 = array (
'H' =>
array (
'HTMLPurifier' =>
array (
0 => __DIR__ . '/..' . '/ezyang/htmlpurifier/library',
),
),
'D' =>
array (
'Detection' =>
array (
0 => __DIR__ . '/..' . '/mobiledetect/mobiledetectlib/namespaced',
),
),
);
public static $classMap = array (
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'Friendica\\Core\\Config' => __DIR__ . '/../..' . '/src/Core/Config.php',
'Friendica\\Core\\PConfig' => __DIR__ . '/../..' . '/src/Core/PConfig.php',
'Friendica\\ParseUrl' => __DIR__ . '/../..' . '/src/ParseUrl.php',
'HTMLPurifier' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier.php',
'HTMLPurifier_Arborize' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Arborize.php',
'HTMLPurifier_AttrCollections' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrCollections.php',
'HTMLPurifier_AttrDef' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef.php',
'HTMLPurifier_AttrDef_CSS' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS.php',
'HTMLPurifier_AttrDef_CSS_AlphaValue' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/AlphaValue.php',
'HTMLPurifier_AttrDef_CSS_Background' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Background.php',
'HTMLPurifier_AttrDef_CSS_BackgroundPosition' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/BackgroundPosition.php',
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'HTMLPurifier_AttrDef_CSS_Composite' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Composite.php',
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'HTMLPurifier_AttrTransform_EnumToCSS' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/EnumToCSS.php',
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'HTMLPurifier_AttrTransform_ImgSpace' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/ImgSpace.php',
'HTMLPurifier_AttrTransform_Input' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/Input.php',
'HTMLPurifier_AttrTransform_Lang' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/Lang.php',
'HTMLPurifier_AttrTransform_Length' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/Length.php',
'HTMLPurifier_AttrTransform_Name' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/Name.php',
'HTMLPurifier_AttrTransform_NameSync' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/NameSync.php',
'HTMLPurifier_AttrTransform_Nofollow' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/Nofollow.php',
'HTMLPurifier_AttrTransform_SafeEmbed' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/SafeEmbed.php',
'HTMLPurifier_AttrTransform_SafeObject' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/SafeObject.php',
'HTMLPurifier_AttrTransform_SafeParam' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/SafeParam.php',
'HTMLPurifier_AttrTransform_ScriptRequired' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/ScriptRequired.php',
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'HTMLPurifier_ChildDef_StrictBlockquote' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/ChildDef/StrictBlockquote.php',
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'HTMLPurifier_Node_Comment' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Node/Comment.php',
'HTMLPurifier_Node_Element' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Node/Element.php',
'HTMLPurifier_Node_Text' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Node/Text.php',
'HTMLPurifier_PercentEncoder' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/PercentEncoder.php',
'HTMLPurifier_Printer' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Printer.php',
'HTMLPurifier_Printer_CSSDefinition' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Printer/CSSDefinition.php',
'HTMLPurifier_Printer_ConfigForm' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Printer/ConfigForm.php',
'HTMLPurifier_Printer_ConfigForm_NullDecorator' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Printer/ConfigForm.php',
'HTMLPurifier_Printer_ConfigForm_bool' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Printer/ConfigForm.php',
'HTMLPurifier_Printer_ConfigForm_default' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Printer/ConfigForm.php',
'HTMLPurifier_Printer_HTMLDefinition' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Printer/HTMLDefinition.php',
'HTMLPurifier_PropertyList' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/PropertyList.php',
'HTMLPurifier_PropertyListIterator' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/PropertyListIterator.php',
'HTMLPurifier_Queue' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Queue.php',
'HTMLPurifier_Strategy' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Strategy.php',
'HTMLPurifier_Strategy_Composite' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Strategy/Composite.php',
'HTMLPurifier_Strategy_Core' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Strategy/Core.php',
'HTMLPurifier_Strategy_FixNesting' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Strategy/FixNesting.php',
'HTMLPurifier_Strategy_MakeWellFormed' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Strategy/MakeWellFormed.php',
'HTMLPurifier_Strategy_RemoveForeignElements' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Strategy/RemoveForeignElements.php',
'HTMLPurifier_Strategy_ValidateAttributes' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Strategy/ValidateAttributes.php',
'HTMLPurifier_StringHash' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/StringHash.php',
'HTMLPurifier_StringHashParser' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/StringHashParser.php',
'HTMLPurifier_TagTransform' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/TagTransform.php',
'HTMLPurifier_TagTransform_Font' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/TagTransform/Font.php',
'HTMLPurifier_TagTransform_Simple' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/TagTransform/Simple.php',
'HTMLPurifier_Token' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Token.php',
'HTMLPurifier_TokenFactory' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/TokenFactory.php',
'HTMLPurifier_Token_Comment' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Token/Comment.php',
'HTMLPurifier_Token_Empty' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Token/Empty.php',
'HTMLPurifier_Token_End' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Token/End.php',
'HTMLPurifier_Token_Start' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Token/Start.php',
'HTMLPurifier_Token_Tag' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Token/Tag.php',
'HTMLPurifier_Token_Text' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Token/Text.php',
'HTMLPurifier_URI' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URI.php',
'HTMLPurifier_URIDefinition' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIDefinition.php',
'HTMLPurifier_URIFilter' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter.php',
'HTMLPurifier_URIFilter_DisableExternal' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/DisableExternal.php',
'HTMLPurifier_URIFilter_DisableExternalResources' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/DisableExternalResources.php',
'HTMLPurifier_URIFilter_DisableResources' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/DisableResources.php',
'HTMLPurifier_URIFilter_HostBlacklist' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/HostBlacklist.php',
'HTMLPurifier_URIFilter_MakeAbsolute' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/MakeAbsolute.php',
'HTMLPurifier_URIFilter_Munge' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/Munge.php',
'HTMLPurifier_URIFilter_SafeIframe' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/SafeIframe.php',
'HTMLPurifier_URIParser' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIParser.php',
'HTMLPurifier_URIScheme' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme.php',
'HTMLPurifier_URISchemeRegistry' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URISchemeRegistry.php',
'HTMLPurifier_URIScheme_data' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/data.php',
'HTMLPurifier_URIScheme_file' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/file.php',
'HTMLPurifier_URIScheme_ftp' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/ftp.php',
'HTMLPurifier_URIScheme_http' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/http.php',
'HTMLPurifier_URIScheme_https' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/https.php',
'HTMLPurifier_URIScheme_mailto' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/mailto.php',
'HTMLPurifier_URIScheme_news' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/news.php',
'HTMLPurifier_URIScheme_nntp' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/nntp.php',
'HTMLPurifier_UnitConverter' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/UnitConverter.php',
'HTMLPurifier_VarParser' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/VarParser.php',
'HTMLPurifier_VarParserException' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/VarParserException.php',
'HTMLPurifier_VarParser_Flexible' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/VarParser/Flexible.php',
'HTMLPurifier_VarParser_Native' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/VarParser/Native.php',
'HTMLPurifier_Zipper' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier/Zipper.php',
'Mobile_Detect' => __DIR__ . '/..' . '/mobiledetect/mobiledetectlib/Mobile_Detect.php',
);
public static function getInitializer(ClassLoader $loader)
{
return \Closure::bind(function () use ($loader) {
$loader->prefixLengthsPsr4 = ComposerStaticInitFriendica::$prefixLengthsPsr4;
$loader->prefixDirsPsr4 = ComposerStaticInitFriendica::$prefixDirsPsr4;
$loader->prefixesPsr0 = ComposerStaticInitFriendica::$prefixesPsr0;
$loader->classMap = ComposerStaticInitFriendica::$classMap;
}, null, ClassLoader::class);
}
}

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@ -0,0 +1,102 @@
[
{
"name": "ezyang/htmlpurifier",
"version": "v4.7.0",
"version_normalized": "4.7.0.0",
"source": {
"type": "git",
"url": "https://github.com/ezyang/htmlpurifier.git",
"reference": "ae1828d955112356f7677c465f94f7deb7d27a40"
},
"dist": {
"type": "zip",
"url": "https://api.github.com/repos/ezyang/htmlpurifier/zipball/ae1828d955112356f7677c465f94f7deb7d27a40",
"reference": "ae1828d955112356f7677c465f94f7deb7d27a40",
"shasum": ""
},
"require": {
"php": ">=5.2"
},
"time": "2015-08-05T01:03:42+00:00",
"type": "library",
"installation-source": "dist",
"autoload": {
"psr-0": {
"HTMLPurifier": "library/"
},
"files": [
"library/HTMLPurifier.composer.php"
]
},
"notification-url": "https://packagist.org/downloads/",
"license": [
"LGPL"
],
"authors": [
{
"name": "Edward Z. Yang",
"email": "admin@htmlpurifier.org",
"homepage": "http://ezyang.com"
}
],
"description": "Standards compliant HTML filter written in PHP",
"homepage": "http://htmlpurifier.org/",
"keywords": [
"html"
]
},
{
"name": "mobiledetect/mobiledetectlib",
"version": "2.8.25",
"version_normalized": "2.8.25.0",
"source": {
"type": "git",
"url": "https://github.com/serbanghita/Mobile-Detect.git",
"reference": "f0896b5c7274d1450023b0b376240be902c3251c"
},
"dist": {
"type": "zip",
"url": "https://api.github.com/repos/serbanghita/Mobile-Detect/zipball/f0896b5c7274d1450023b0b376240be902c3251c",
"reference": "f0896b5c7274d1450023b0b376240be902c3251c",
"shasum": ""
},
"require": {
"php": ">=5.0.0"
},
"require-dev": {
"phpunit/phpunit": "*"
},
"time": "2017-03-29T13:59:30+00:00",
"type": "library",
"installation-source": "dist",
"autoload": {
"classmap": [
"Mobile_Detect.php"
],
"psr-0": {
"Detection": "namespaced/"
}
},
"notification-url": "https://packagist.org/downloads/",
"license": [
"MIT"
],
"authors": [
{
"name": "Serban Ghita",
"email": "serbanghita@gmail.com",
"homepage": "http://mobiledetect.net",
"role": "Developer"
}
],
"description": "Mobile_Detect is a lightweight PHP class for detecting mobile devices. It uses the User-Agent string combined with specific HTTP headers to detect the mobile environment.",
"homepage": "https://github.com/serbanghita/Mobile-Detect",
"keywords": [
"detect mobile devices",
"mobile",
"mobile detect",
"mobile detector",
"php mobile detect"
]
}
]

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library/ezyang/htmlpurifier/INSTALL → vendor/ezyang/htmlpurifier/INSTALL vendored
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library/ezyang/htmlpurifier/INSTALL.fr.utf8 → vendor/ezyang/htmlpurifier/INSTALL.fr.utf8 vendored
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library/ezyang/htmlpurifier/LICENSE → vendor/ezyang/htmlpurifier/LICENSE vendored
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library/ezyang/htmlpurifier/NEWS → vendor/ezyang/htmlpurifier/NEWS vendored
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library/ezyang/htmlpurifier/README → vendor/ezyang/htmlpurifier/README vendored
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library/ezyang/htmlpurifier/TODO → vendor/ezyang/htmlpurifier/TODO vendored
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library/ezyang/htmlpurifier/VERSION → vendor/ezyang/htmlpurifier/VERSION vendored
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library/ezyang/htmlpurifier/WHATSNEW → vendor/ezyang/htmlpurifier/WHATSNEW vendored
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library/ezyang/htmlpurifier/WYSIWYG → vendor/ezyang/htmlpurifier/WYSIWYG vendored
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library/ezyang/htmlpurifier/extras/ConfigDoc/HTMLXSLTProcessor.php → vendor/ezyang/htmlpurifier/extras/ConfigDoc/HTMLXSLTProcessor.php vendored
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library/ezyang/htmlpurifier/extras/FSTools.php → vendor/ezyang/htmlpurifier/extras/FSTools.php vendored
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library/ezyang/htmlpurifier/extras/FSTools/File.php → vendor/ezyang/htmlpurifier/extras/FSTools/File.php vendored
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library/ezyang/htmlpurifier/extras/HTMLPurifierExtras.auto.php → vendor/ezyang/htmlpurifier/extras/HTMLPurifierExtras.auto.php vendored
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library/ezyang/htmlpurifier/extras/HTMLPurifierExtras.autoload.php → vendor/ezyang/htmlpurifier/extras/HTMLPurifierExtras.autoload.php vendored
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library/ezyang/htmlpurifier/extras/HTMLPurifierExtras.php → vendor/ezyang/htmlpurifier/extras/HTMLPurifierExtras.php vendored
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0
library/ezyang/htmlpurifier/extras/README → vendor/ezyang/htmlpurifier/extras/README vendored
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library/ezyang/htmlpurifier/library/HTMLPurifier.auto.php → vendor/ezyang/htmlpurifier/library/HTMLPurifier.auto.php vendored
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library/ezyang/htmlpurifier/library/HTMLPurifier.autoload.php → vendor/ezyang/htmlpurifier/library/HTMLPurifier.autoload.php vendored
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library/ezyang/htmlpurifier/library/HTMLPurifier.composer.php → vendor/ezyang/htmlpurifier/library/HTMLPurifier.composer.php vendored
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0
library/ezyang/htmlpurifier/library/HTMLPurifier.func.php → vendor/ezyang/htmlpurifier/library/HTMLPurifier.func.php vendored
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library/ezyang/htmlpurifier/library/HTMLPurifier.includes.php → vendor/ezyang/htmlpurifier/library/HTMLPurifier.includes.php vendored
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library/ezyang/htmlpurifier/library/HTMLPurifier.kses.php → vendor/ezyang/htmlpurifier/library/HTMLPurifier.kses.php vendored
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library/ezyang/htmlpurifier/library/HTMLPurifier.path.php → vendor/ezyang/htmlpurifier/library/HTMLPurifier.path.php vendored
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library/ezyang/htmlpurifier/library/HTMLPurifier.php → vendor/ezyang/htmlpurifier/library/HTMLPurifier.php vendored
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library/ezyang/htmlpurifier/library/HTMLPurifier.safe-includes.php → vendor/ezyang/htmlpurifier/library/HTMLPurifier.safe-includes.php vendored
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library/ezyang/htmlpurifier/library/HTMLPurifier/Arborize.php → vendor/ezyang/htmlpurifier/library/HTMLPurifier/Arborize.php vendored
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library/ezyang/htmlpurifier/library/HTMLPurifier/AttrCollections.php → vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrCollections.php vendored
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