| New file |
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| 0,0 → 1,72 |
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| <?php |
| |
| /** |
| * This is the HMACSHA1 implementation for the OpenID library. |
| * |
| * PHP versions 4 and 5 |
| * |
| * LICENSE: See the COPYING file included in this distribution. |
| * |
| * @access private |
| * @package OpenID |
| * @author JanRain, Inc. <openid@janrain.com> |
| * @copyright 2005 Janrain, Inc. |
| * @license http://www.gnu.org/copyleft/lesser.html LGPL |
| */ |
| |
| /** |
| * SHA1_BLOCKSIZE is this module's SHA1 blocksize used by the fallback |
| * implementation. |
| */ |
| define('Auth_OpenID_SHA1_BLOCKSIZE', 64); |
| |
| if (!function_exists('sha1')) { |
| /** |
| * Return a raw SHA1 hash of the given string |
| * |
| * XXX: include the SHA1 code from Dan Libby's OpenID library |
| */ |
| function Auth_OpenID_SHA1($text) |
| { |
| trigger_error('No SHA1 function found', E_USER_ERROR); |
| } |
| } else { |
| /** |
| * @ignore |
| */ |
| function Auth_OpenID_SHA1($text) |
| { |
| $hex = sha1($text); |
| $raw = ''; |
| for ($i = 0; $i < 40; $i += 2) { |
| $hexcode = substr($hex, $i, 2); |
| $charcode = (int)base_convert($hexcode, 16, 10); |
| $raw .= chr($charcode); |
| } |
| return $raw; |
| } |
| } |
| |
| /** |
| * Compute an HMAC/SHA1 hash. |
| * |
| * @access private |
| * @param string $key The HMAC key |
| * @param string $text The message text to hash |
| * @return string $mac The MAC |
| */ |
| function Auth_OpenID_HMACSHA1($key, $text) |
| { |
| if (strlen($key) > Auth_OpenID_SHA1_BLOCKSIZE) { |
| $key = Auth_OpenID_SHA1($key, true); |
| } |
| |
| $key = str_pad($key, Auth_OpenID_SHA1_BLOCKSIZE, chr(0x00)); |
| $ipad = str_repeat(chr(0x36), Auth_OpenID_SHA1_BLOCKSIZE); |
| $opad = str_repeat(chr(0x5c), Auth_OpenID_SHA1_BLOCKSIZE); |
| $hash1 = Auth_OpenID_SHA1(($key ^ $ipad) . $text, true); |
| $hmac = Auth_OpenID_SHA1(($key ^ $opad) . $hash1, true); |
| return $hmac; |
| } |
| |
| ?> |