friendica/src/Security/OAuth1/Signature/OAuthSignatureMethod_HMAC_S...

66 lines
2.1 KiB
PHP

<?php
/**
* @copyright Copyright (C) 2010-2022, the Friendica project
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Security\OAuth1\Signature;
use Friendica\Security\OAuth1\OAuthRequest;
use Friendica\Security\OAuth1\OAuthUtil;
/**
* The HMAC-SHA1 signature method uses the HMAC-SHA1 signature algorithm as defined in [RFC2104]
* where the Signature Base String is the text and the key is the concatenated values (each first
* encoded per Parameter Encoding) of the Consumer Secret and Token Secret, separated by an '&'
* character (ASCII code 38) even if empty.
* - Chapter 9.2 ("HMAC-SHA1")
*/
class OAuthSignatureMethod_HMAC_SHA1 extends OAuthSignatureMethod
{
function get_name()
{
return "HMAC-SHA1";
}
/**
* @param OAuthRequest $request
* @param \Friendica\Security\OAuth1\OAuthConsumer $consumer
* @param \Friendica\Security\OAuth1\OAuthToken $token
*
* @return string
*/
public function build_signature(OAuthRequest $request, \Friendica\Security\OAuth1\OAuthConsumer $consumer, \Friendica\Security\OAuth1\OAuthToken $token = null)
{
$base_string = $request->get_signature_base_string();
$request->base_string = $base_string;
$key_parts = [
$consumer->secret,
($token) ? $token->secret : "",
];
$key_parts = OAuthUtil::urlencode_rfc3986($key_parts);
$key = implode('&', $key_parts);
$r = base64_encode(hash_hmac('sha1', $base_string, $key, true));
return $r;
}
}