C#,PHP对应加密函数

require_once "JunDes.php";

$jDes=new JunDes();
echo $jDes->encode('98765');

//echo $jDes->key_64;
//echo  $jDes->iv_64;

<?php
/**
 * Created by PhpStorm.
 * User: yanjun
 * Date: 17/1/4
 * Time: 10:43
 */
class JunDes {

    private static $_instance = NULL;

    public $key_64='5432';
    public $iv_64='987654';

    function toMd5($str)
    {
        return substr(strtoupper(md5($str)),0,8);
    }

    /**
     * @return JoDES
     */
    public static function share() {
        if (is_null(self::$_instance)) {
            self::$_instance = new JoDES();
        }
        return self::$_instance;
    }

    /**
     * 加密
     * @param string $str 要处理的字符串
     * @param string $key 加密Key，为8个字节长度
     * @return string
     */
    public function encode($str) {
        $size = mcrypt_get_block_size(MCRYPT_DES, MCRYPT_MODE_CBC);
        $str = $this->pkcs5Pad($str, $size);
        $aaa = mcrypt_cbc(MCRYPT_DES, $this->toMd5($this->key_64), $str, MCRYPT_ENCRYPT, $this->toMd5($this->iv_64));
        $ret = base64_encode($aaa);
        return $ret;
    }

    /**
     * 解密
     * @param string $str 要处理的字符串
     * @param string $key 解密Key，为8个字节长度
     * @return string
     */
    public function decode($str, $key) {
        $strBin = base64_decode($str);
        $str = mcrypt_cbc(MCRYPT_DES, $this->toMd5($this->key_64), $strBin, MCRYPT_DECRYPT, $this->toMd5($this->iv_64));
        $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);
    }
}

C#

public class MyDes
    {

        //加密/解密钥匙
        static string  KEY_64 = ToMD5("4322");//注意了，是8个字符，64位    
        static string IV_64 = ToMD5("6543");//注意了，是8个字符，64位

        #region MD5加密
        /// <summary>
        /// 转换MD5密码
        /// </summary>
        /// <param name="pass"></param>
        /// <returns></returns>
        public static string ToMD5(string KEY)
        {
            byte[] result = Encoding.Default.GetBytes(KEY);
            MD5 md5 = new MD5CryptoServiceProvider();
            byte[] output = md5.ComputeHash(result);

            string KEY_64 = BitConverter.ToString(output).Replace("-", "").Substring(0, 8);
            return KEY_64;

        }
        #endregion


        /// <summary>
        /// DES加密方法
        /// </summary>
        /// <param name="strPlain">明文</param>
        /// <param name="strDESKey">密钥</param>
        /// <param name="strDESIV">向量</param>
        /// <returns>密文</returns>
        public static string Encode(string source)
        {
            StringBuilder sb = new StringBuilder();
            using (DESCryptoServiceProvider des = new DESCryptoServiceProvider())
            {
                byte[] key = ASCIIEncoding.ASCII.GetBytes(KEY_64);
                byte[] iv = ASCIIEncoding.ASCII.GetBytes(IV_64);
                byte[] dataByteArray = Encoding.UTF8.GetBytes(source);
                des.Mode = System.Security.Cryptography.CipherMode.CBC;
                des.Key = key;
                des.IV = iv;
                string encrypt = "";
                using (MemoryStream ms = new MemoryStream())
                using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write))
                {
                    cs.Write(dataByteArray, 0, dataByteArray.Length);
                    cs.FlushFinalBlock();
                    encrypt = Convert.ToBase64String(ms.ToArray());
                }
                return encrypt;
            }
        }

        /// <summary>
        /// 进行DES解密。
        /// </summary>
        /// <param name="pToDecrypt">要解密的base64串</param>
        /// <param name="sKey">密钥，且必须为8位。</param>
        /// <returns>已解密的字符串。</returns>
        public static string Decode(string source)
        {
            byte[] inputByteArray = System.Convert.FromBase64String(source);//Encoding.UTF8.GetBytes(source);
            using (DESCryptoServiceProvider des = new DESCryptoServiceProvider())
            {
                des.Key = ASCIIEncoding.ASCII.GetBytes(KEY_64);
                des.IV = ASCIIEncoding.ASCII.GetBytes(IV_64);
                System.IO.MemoryStream ms = new System.IO.MemoryStream();
                using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write))
                {
                    cs.Write(inputByteArray, 0, inputByteArray.Length);
                    cs.FlushFinalBlock();
                    cs.Close();
                }
                string str = Encoding.UTF8.GetString(ms.ToArray());
                ms.Close();
                return str;
            }
        }
    }

方式2

/// <summary>
    /// 加密/解密类
    /// </summary>
    public class EncAndDec
    {
        //加密/解密钥匙
        const string KEY_64 = "543";//注意了，是8个字符，64位    
        const string IV_64 = "543";//注意了，是8个字符，64位

        const string ClientLocal_KEY_64 = "7654";
        const string ClientLocal_IV_64 = "321232";

        /// <summary>
        /// 加密的方法，通过2个密匙进行加密
        /// </summary>
        /// <param name="data">加密的数据</param>
        /// <returns>返回加密后的字符串</returns>
        public static string Encode(string data)
        {
            EncAndDec ed = new EncAndDec();
            return ed.Encode(data, KEY_64, IV_64);
        }
        /// <summary>
        /// 解密的方法
        /// </summary>
        /// <param name="data">解密的数据</param>
        /// <returns>返回加密前的字符串</returns>
        public static string Decode(string data)
        {
            EncAndDec ed = new EncAndDec();
            return ed.Decode(data, KEY_64, IV_64);
        }

        /// <summary>
        /// 客户本地加密的方法，通过2个密匙进行加密
        /// </summary>
        /// <param name="data">加密的数据</param>
        /// <returns>返回加密后的字符串</returns>
        public static string EncodeClientLocal(string data)
        {
            EncAndDec ed = new EncAndDec();
            return ed.Encode(data, ClientLocal_KEY_64, ClientLocal_IV_64);
        }
        /// <summary>
        /// 客户本地解密的方法
        /// </summary>
        /// <param name="data">解密的数据</param>
        /// <returns>返回加密前的字符串</returns>
        public static string DecodeClientLocal(string data)
        {
            EncAndDec ed = new EncAndDec();
            return ed.Decode(data, ClientLocal_KEY_64, ClientLocal_IV_64);
        }

        #region DEC加密的方法
        /// <summary>
        /// 加密的方法，通过2个密匙进行加密
        /// </summary>
        /// <param name="data">通过Md5加密一次</param>
        /// <param name="KEY_64"></param>
        /// <param name="IV_64"></param>
        /// <returns></returns>
        private string Encode(string data, string KEY_64, string IV_64)
        {

            KEY_64 = ToMD5(KEY_64);
            IV_64 = ToMD5(IV_64);
            byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
            byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);

            DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
            //int i = cryptoProvider.KeySize;
            MemoryStream ms = new MemoryStream();
            CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateEncryptor(byKey, byIV), CryptoStreamMode.Write);

            StreamWriter sw = new StreamWriter(cst);
            sw.Write(data);
            sw.Flush();
            cst.FlushFinalBlock();
            sw.Flush();
            return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length);

        }
        /// <summary>
        /// 解密的方法（）
        /// </summary>
        /// <param name="data"></param>
        /// <param name="KEY_64"></param>
        /// <param name="IV_64"></param>
        /// <returns></returns>
        private string Decode(string data, string KEY_64, string IV_64)
        {
            KEY_64 = ToMD5(KEY_64);
            IV_64 = ToMD5(IV_64);
            byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
            byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);

            byte[] byEnc;
            try
            {
                byEnc = Convert.FromBase64String(data);
            }
            catch
            {
                return null;
            }

            DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
            MemoryStream ms = new MemoryStream(byEnc);
            CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read);
            StreamReader sr = new StreamReader(cst);
            return sr.ReadToEnd();
        }
        #endregion

        #region MD5加密
        /// <summary>
        /// 转换MD5密码
        /// </summary>
        /// <param name="pass"></param>
        /// <returns></returns>
        public static string ToMD5(string KEY)
        {
            byte[] result = Encoding.Default.GetBytes(KEY);
            MD5 md5 = new MD5CryptoServiceProvider();
            byte[] output = md5.ComputeHash(result);

            string KEY_64 = BitConverter.ToString(output).Replace("-", "").Substring(0, 8);
            return KEY_64;

        }
        #endregion

    }