C#和PHP加密结果一致的DES加密解密算法。php实现和c#一致的DES加密解密

DES加密算法

des对称加密，是一种比较传统的加密方式，其加密运算、解密运算使用的是同样的密钥，信息的发送者和信息的接收者在进行信息的传输与处理时，必须共同持有该密码（称为对称密码），是一种对称加密算法。

这里直接贴代码：

 加密结果为Base64字符串。

C#版本DES加密方法 ：

    /// <summary>
    ///  加密 算法
    ///  参考，C# php 通用加密算法。 Des加密
    ///  http://www.it1352.com/422514.html
    /// </summary>
    public class DESEncrypt
    {
        /// <summary>
        /// 加密
        /// </summary>
        /// <param name="Text"></param>
        /// <returns></returns>
        public static string Encrypt(string Text)
        {
            return Encrypt(Text, "abcd1234");// 这里更新为一个至少8位长度的密码
        }
        public static string Encrypt(string strText, string decryptKey)
        {
            string outString = "";
            string result = string.Empty;

            try
            {
                DESCryptoServiceProvider des = new DESCryptoServiceProvider();
                des.Mode = CipherMode.ECB;
                byte[] inputByteArray = Encoding.UTF8.GetBytes(strText);

                des.Key = ASCIIEncoding.ASCII.GetBytes(decryptKey.Substring(0, 8));//8位 偏移向量，一般为8位。
                des.IV = ASCIIEncoding.ASCII.GetBytes(decryptKey.Substring(0, 8));

                System.IO.MemoryStream ms = new System.IO.MemoryStream();
                CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
                cs.Write(inputByteArray, 0, inputByteArray.Length);
                cs.FlushFinalBlock();
                byte[] bytelist = ms.ToArray();

                outString = Convert.ToBase64String(bytelist);// 转base64位输出
                //StringBuilder ret = new StringBuilder();
                //foreach (byte b in ms.ToArray())
                //{
                //    ret.AppendFormat("{0:X2}", b);
                //}
                //return ret.ToString();

            }
            catch (System.Exception)
            {
                outString = "";
            }
            return outString;
        }


        #region ========解密========


        /// <summary>
        /// 解密
        /// </summary>
        /// <param name="Text"></param>
        /// <returns></returns>
        public static string Decrypt(string Text)
        {
            return Decrypt(Text, "abcd1234");
        }

        /// <summary> 
        /// 解密数据 
        /// </summary> 
        /// <param name="Text"></param> 
        /// <param name="sKey"></param> 
        /// <returns></returns> 
        public static string Decrypt(string Text, string sKey)
        {
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();
            des.Mode = CipherMode.ECB;
            //int len;
            //len = Text.Length / 2;
            //byte[] inputByteArray = new byte[len];
            //int x, i;
            //for (x = 0; x < len; x++)
            //{
            //    i = Convert.ToInt32(Text.Substring(x * 2, 2), 16);
            //    inputByteArray[x] = (byte)i;
            //}
            byte[] inputByteArray;
            inputByteArray = Convert.FromBase64String(Text);

            des.Key = ASCIIEncoding.ASCII.GetBytes(sKey.Substring(0, 8));//8位
            des.IV = ASCIIEncoding.ASCII.GetBytes(sKey.Substring(0, 8));

            //des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
            //des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
            System.IO.MemoryStream ms = new System.IO.MemoryStream();
            CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();
            return Encoding.Default.GetString(ms.ToArray());
        } 

        #endregion

    }

　　

PHP版本的des加密代码：

<?php

/* 
 * DES加密、解密
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
 /* 
 秘钥：abcd1234，des加密ecb模式。 
 输入： 
 输出： 
 */

class Des {

    public static function encrypt($key, $input) {
        $size = mcrypt_get_block_size('des', 'ecb');  // $size = 8 ;
        $input = self::pkcs5_pad($input, $size);      // 
        
        //        $key = $this->key;         
        $td = mcrypt_module_open('des', '', 'ecb', '');       
        $iv = @mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);      //向量随机
        
        @mcrypt_generic_init($td, $key, $iv);         
        $data = mcrypt_generic($td, $input);
        mcrypt_generic_deinit($td);      
        mcrypt_module_close($td);         
        $data = base64_encode($data);         
        return $data; 
    }
    
    public static function decrypt($key, $encrypted) {
        $encrypted = base64_decode($encrypted);       
        //        $key =$this->key;          
        $td = mcrypt_module_open('des','','ecb','');   
        //使用MCRYPT_DES算法,cbc模式                
        $iv = @mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);            
        $ks = mcrypt_enc_get_key_size($td);               
        @mcrypt_generic_init($td, $key, $iv);         
        //初始处理                
        $decrypted = mdecrypt_generic($td, $encrypted);         
        //解密              
        mcrypt_generic_deinit($td);         
        //结束            
        mcrypt_module_close($td);                 
        $y=  self::pkcs5_unpad($decrypted);          
        return $y;    
    }
    public static function pkcs5_pad($text, $blocksize) {
        $pad = $blocksize - (strlen($text) % $blocksize);         
        return $text . str_repeat(chr($pad), $pad);                
    }
    
    public static function pkcs5_unpad($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);
    }
}