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updates to Diaspora decrypt/verify from recent testing

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Friendika 2011-08-05 01:34:32 -07:00
parent b8592dba8a
commit 6eec04b09c
1 changed files with 14 additions and 48 deletions
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62
mod/receive.php
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@ -117,7 +117,6 @@ function receive_post(&$a) {
$idom = parse_xml_string($decrypted,false); $idom = parse_xml_string($decrypted,false);
print_r($idom);
$inner_iv = base64_decode($idom->iv); $inner_iv = base64_decode($idom->iv);
$inner_aes_key = base64_decode($idom->aes_key); $inner_aes_key = base64_decode($idom->aes_key);
@ -149,17 +148,14 @@ function receive_post(&$a) {
logger('signature: ' . bin2hex($signature)); logger('signature: ' . bin2hex($signature));
// openssl_public_encrypt('test',$rrr,$rpubkey);
// logger('rrr: ' . $rrr);
// $pubdecsig = '';
// openssl_public_decrypt($signature,$pubdecsig,$rpubkey);
// logger('decsig: ' . bin2hex($pubdecsig));
// unpack the data // unpack the data
// strip whitespace so our data element will return to one big base64 blob // strip whitespace so our data element will return to one big base64 blob
$data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data); $data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data);
// Add back the 60 char linefeeds
$lines = str_split($data,60);
$data = implode("\n",$lines);
// stash away some other stuff for later // stash away some other stuff for later
@ -168,7 +164,7 @@ function receive_post(&$a) {
$encoding = $base->encoding; $encoding = $base->encoding;
$alg = $base->alg; $alg = $base->alg;
$signed_data = $data . "\n" . '.' . base64url_encode($type) . "\n" . '.' . base64url_encode($encoding) . "\n" . '.' . base64url_encode($alg) . "\n"; $signed_data = $data . (($data[-1] != "\n") ? "\n" : '') . '.' . base64url_encode($type) . "\n" . '.' . base64url_encode($encoding) . "\n" . '.' . base64url_encode($alg) . "\n";
logger('signed data: ' . $signed_data); logger('signed data: ' . $signed_data);
@ -177,9 +173,6 @@ function receive_post(&$a) {
// Now pull out the inner encrypted blob // Now pull out the inner encrypted blob
$inner_encrypted = base64_decode($data); $inner_encrypted = base64_decode($data);
$inner_decrypted = $inner_decrypted =
@ -209,52 +202,25 @@ function receive_post(&$a) {
receive_return(400); receive_return(400);
} }
// FIXME
// Use non salmon compliant signature
/* if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
$verify = openssl_verify($signed_data,$signature,$key,'sha256');
}
else {
// FIXME
// fallback sha256 verify for PHP < 5.3
// Setup RSA stuff to verify the signature }
set_include_path(get_include_path() . PATH_SEPARATOR . 'library' . PATH_SEPARATOR . 'phpsec');
require_once('library/phpsec/Crypt/RSA.php');
$key_info = explode('.',$key);
$m = base64url_decode($key_info[1]);
$e = base64url_decode($key_info[2]);
logger('mod-salmon: key details: ' . print_r($key_info,true));
$rsa = new CRYPT_RSA();
$rsa->signatureMode = CRYPT_RSA_SIGNATURE_PKCS1;
$rsa->setHash('sha256');
$rsa->modulus = new Math_BigInteger($m, 256);
$rsa->k = strlen($rsa->modulus->toBytes());
$rsa->exponent = new Math_BigInteger($e, 256);
$verify = $rsa->verify($signed_data,$signature);
if(! $verify) { if(! $verify) {
logger('mod-diaspora: Message did not verify. Discarding.'); logger('mod-diaspora: Message did not verify. Discarding.');
receive_return(400); receive_return(400);
} }
*/
logger('mod-diaspora: Message verified.'); logger('mod-diaspora: Message verified.');
/* decrypt the sucker */ // If we reached this point, the message is good.
/* // Now let's figure out if the author is allowed to send us stuff.
// TODO
*/
/*
*
* If we reached this point, the message is good. Now let's figure out if the author is allowed to send us stuff.
*
*/
$r = q("SELECT * FROM `contact` WHERE `network` = 'dspr' AND ( `url` = '%s' OR `alias` = '%s') $r = q("SELECT * FROM `contact` WHERE `network` = 'dspr' AND ( `url` = '%s' OR `alias` = '%s')
AND `uid` = %d LIMIT 1", AND `uid` = %d LIMIT 1",