PHP与asp.net C#可共用的可逆加密算法

因为工作需我们需要在php中生成加密然后在asp.net中接受过来的密码再解密,下面我找到一个PHP与asp.net C#可共用的可逆加密算法,有需要了解的同学可参考.

php加密算法,代码如下:

<?php 
class DES 
{ 
    var $key; 
    var $iv; //偏移量 
     
    function DES($key = &#39;11001100&#39;, $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 ( $text ) - 1} ); 
        //开源代码phprm.com 
        if ($pad > strlen ( $text )) 
            return false; 
        if (strspn ( $text, chr ( $pad ), strlen ( $text ) - $pad ) != $pad) 
            return false; 
        return substr ( $text, 0, - 1 * $pad ); 
    } 
     
} 
?>

asp.net程序代码,代码如下:
using System; 
using System.Collections.Generic; 
using System.IO; 
using System.Linq; 
using System.Security.Cryptography; 
using System.Text; 
namespace WindowsFormsApplication1 
{ 
    /// <summary> 
    /// DES加密解密字符串 
    /// </summary> 
    public class DesEncryption 
    { 
        /// <summary> 
        /// DES加密字符串 
        /// </summary> 
        /// <param name="encryptString">待加密的字符串</param> 
        /// <param name="encryptKey">加密密钥,要求为8位</param> 
        /// <returns>加密成功返回加密后的字符串，失败返回null</returns> 
        public static string EncryptDES(string encryptString, string encryptKey = "11001100") 
        { 
            try 
            { 
                byte[] rgbKey = ASCIIEncoding.ASCII.GetBytes(encryptKey.Substring(0, 8)); 
                byte[] rgbIV = rgbKey; 
                byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString); 
                DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider(); 
                MemoryStream mStream = new MemoryStream(); 
                CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write); 
                cStream.Write(inputByteArray, 0, inputByteArray.Length); 
                cStream.FlushFinalBlock(); 
                StringBuilder ret = new StringBuilder(); 
                foreach (byte b in mStream.ToArray()) 
                { 
                    ret.AppendFormat("{0:X2}", b); 
                } 
                ret.ToString(); 
                return ret.ToString();  
            } 
            catch 
            { 
                return null; 
            } 
        } 
 
        /// <summary> 
        /// DES解密字符串 
        /// </summary> 
        /// <param name="decryptString">待解密的字符串</param> 
        /// <param name="decryptKey">解密密钥,要求为8位,和加密密钥相同</param> 
        /// <returns>解密成功返回解密后的字符串，失败返回null</returns> 
        public static string DecryptDES(string decryptString, string decryptKey = "11001100") 
        { 
            try 
            { 
                byte[] rgbKey = ASCIIEncoding.ASCII.GetBytes(decryptKey); 
                byte[] rgbIV = rgbKey; 
                byte[] inputByteArray = new byte[decryptString.Length / 2]; 
                for (int x = 0; x < decryptString.Length / 2; x++) 
                { 
                    int i = (Convert.ToInt32(decryptString.Substring(x * 2, 2), 16)); 
                    inputByteArray[x] = (byte)i; 
                }             
                DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider(); 
                MemoryStream mStream = new MemoryStream(); 
                CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write); 
                cStream.Write(inputByteArray, 0, inputByteArray.Length); 
                cStream.FlushFinalBlock(); 
                return Encoding.UTF8.GetString(mStream.ToArray()); 
            } 
            catch 
            { 
                return null; 
            } 
        } 
    } 
}

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