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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2009 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: cevin <cevin1991@gmail.com>
// +----------------------------------------------------------------------
// $Id: Hmac.class.php 2504 2011-12-28 07:35:29Z liu21st $
/**
+------------------------------------------------------------------------------
* HMAC 加密实现类
+------------------------------------------------------------------------------
* @category ORG
* @package ORG
* @subpackage Crypt
* @author cevin <cevin1991@gmail.com>
* @version $Id: Hmac.class.php 2504 2011-12-28 07:35:29Z liu21st $
+------------------------------------------------------------------------------
*/
class Hmac {
/**
+----------------------------------------------------------
* SHA1加密
+----------------------------------------------------------
* @access static
+----------------------------------------------------------
* @param string $key 加密key
* @param string $str 字符串
+----------------------------------------------------------
* @return string
+----------------------------------------------------------
* @throws ThinkExecption
+----------------------------------------------------------
*/
public static function sha1($key,$str) {
$blocksize=64;
$hashfunc='sha1';
if (strlen($key)>$blocksize)
$key=pack('H*', $hashfunc($key));
$key=str_pad($key,$blocksize,chr(0x00));
$ipad=str_repeat(chr(0x36),$blocksize);
$opad=str_repeat(chr(0x5c),$blocksize);
$hmac = pack(
'H*',$hashfunc(
($key^$opad).pack(
'H*',$hashfunc(
($key^$ipad).$str
)
)
)
);
return $hmac;
}
/**
+----------------------------------------------------------
* MD5加密
+----------------------------------------------------------
* @access static
+----------------------------------------------------------
* @param string $key 加密key
* @param string $str 字符串
+----------------------------------------------------------
* @return string
+----------------------------------------------------------
* @throws ThinkExecption
+----------------------------------------------------------
*/
public static function md5($key, $str) {
$b = 64;
if (strlen($key) > $b) {
$key = pack("H*",md5($key));
}
$key = str_pad($key, $b, chr(0x00));
$ipad = str_pad('', $b, chr(0x36));
$opad = str_pad('', $b, chr(0x5c));
$k_ipad = $key ^ $ipad ;
$k_opad = $key ^ $opad;
return md5($k_opad . pack("H*",md5($k_ipad . $str)));
}
}
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