C#与PHP加解密函数

        public string key = "98765432";//任意组合的8位数字
        private static byte[] Keys = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };

        /// <summary>
        /// DESEnCode DES加密
        /// </summary>
        /// <param name=”pToEncrypt”></param>
        /// <param name=”sKey”></param>
        /// <returns></returns>
        public static string DESEnCode(string pToEncrypt, string sKey)
        {
            //pToEncrypt = HttpContext.Current.Server.UrlEncode(pToEncrypt);
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();
            byte[] inputByteArray = Encoding.GetEncoding("UTF-8").GetBytes(pToEncrypt);

            //建立加密对象的密钥和偏移量   
            //原文使用ASCIIEncoding.ASCII方法的GetBytes方法   
            //使得输入密码必须输入英文文本   
            des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
            des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
            MemoryStream ms = new MemoryStream();
            CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);

            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();

            StringBuilder ret = new StringBuilder();
            foreach (byte b in ms.ToArray())
            {
                ret.AppendFormat("{0:x2}", b);
            }
            ret.ToString();
            return ret.ToString();
        }
       
        /// <summary>
        /// DESDeCode DES解密
        /// </summary>
        /// <param name=”pToDecrypt”> 待解密的字符串</param>
        /// <param name=”sKey”> 解密密钥,要求为8字节,和加密密钥相同</param>
        /// <returns>解密成功返回解密后的字符串，失败返源串</returns>       
        public static string DESDeCode(string pToDecrypt, string sKey)
        {
            //    HttpContext.Current.Response.Write(pToDecrypt + “<br>” + sKey);  
            //    HttpContext.Current.Response.End();  
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();

            byte[] inputByteArray = new byte[pToDecrypt.Length / 2];
            for (int x = 0; x < pToDecrypt.Length / 2; x++)
            {
                int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16));
                inputByteArray[x] = (byte)i;
            }

            des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
            des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
            MemoryStream ms = new MemoryStream();
            CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();

            StringBuilder ret = new StringBuilder();

            return System.Text.Encoding.Default.GetString(ms.ToArray());
            //return HttpContext.Current.Server.UrlDecode(System.Text.Encoding.Default.GetString(ms.ToArray()));
        }

<?php
class DES
{
    var $key;
    var $iv; //偏移量    
    function DES( $key, $iv=0) {
    //key长度8例如:1234abcd
        $this->key = $key;
        if( $iv == 0 ) {
            $this->iv = $key; //默认以$key 作为 iv
        } else {
            $this->iv = $iv; //mcrypt_create_iv ( mcrypt_get_block_size (MCRYPT_DES, MCRYPT_MODE_CBC), MCRYPT_DEV_RANDOM );
        }
    }
    
    function encrypt($str) {
    //加密，返回大写十六进制字符串
        $size = mcrypt_get_block_size(MCRYPT_DES,MCRYPT_MODE_CBC);
        $str = $this->pkcs5Pad ( $str, $size );
        return strtoupper( bin2hex( mcrypt_cbc(MCRYPT_DES, $this->key, $str, MCRYPT_ENCRYPT, $this->iv ) ) );
    }    
    function decrypt($str) {
    //解密
        $strBin = $this->hex2bin( strtolower( $str ) );
        $str = mcrypt_cbc( MCRYPT_DES, $this->key, $strBin, MCRYPT_DECRYPT, $this->iv );
        $str = $this->pkcs5Unpad( $str );
        return $str;
    }    
    function hex2bin($hexData) {
        $binData = "";
        for($i = 0; $i < strlen ( $hexData ); $i += 2) {
            $binData .= chr ( hexdec ( substr ( $hexData, $i, 2 ) ) );
        }
        return $binData;
    } 
    function pkcs5Pad($text, $blocksize) {
        $pad = $blocksize - (strlen ( $text ) % $blocksize);
        return $text . str_repeat ( chr ( $pad ), $pad );
    }    
    function pkcs5Unpad($text) {
        $pad = ord ( $text {strlen ( $text ) - 1} );
        if ($pad > strlen ( $text ))
            return false;
        if (strspn ( $text, chr ( $pad ), strlen ( $text ) - $pad ) != $pad)
            return false;
        return substr ( $text, 0, - 1 * $pad );
    }    
 
}
$str = "supidea";
$key = '98765432';
$crypt = new DES($key);
$mstr = $crypt->encrypt($str);//加密
$str = $crypt->decrypt($mstr);//解密
?>