DES 加解密

<?php

/**
 +------------------------------------------------------------------------------
 * DES加解密类
 * 示例：
 * Des::encrypt('content','key')
 * Des::decrypt('encrypt','key')
 +------------------------------------------------------------------------
 */

class Des
{
    //DES加密
    static function encrypt($encrypt,$key="")
	{
        $iv = mcrypt_create_iv ( mcrypt_get_iv_size ( MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB ), MCRYPT_RAND );
        $passcrypt = mcrypt_encrypt ( MCRYPT_RIJNDAEL_256, $key, $encrypt, MCRYPT_MODE_ECB, $iv );
        $encode = base64_encode ( $passcrypt );
        return $encode;
    }

    //DES解密
    static function decrypt($decrypt,$key="")
	{
        $decoded = base64_decode ( $decrypt );
        $iv = mcrypt_create_iv ( mcrypt_get_iv_size ( MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB ), MCRYPT_RAND );
        $decrypted = mcrypt_decrypt ( MCRYPT_RIJNDAEL_256, $key, $decoded, MCRYPT_MODE_ECB, $iv );
        return $decrypted;
    }
}
?>

使用方法:

<?php
	include("Des.class.php");
	$key = "abc";
	$data = array("username"=>"mochong", "weight"=>140);
	$result = Des::encrypt(json_encode($data), $key);
	print_r($result);	
	
	print_r("/n<br>");
	$oriData = Des::decrypt($result, $key);
	print_r($oriData);
?>