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PHP与asp.net C#可共用的可逆加密算法_PHP教程

WBOY原創: 2016-07-20 11:12:10791瀏覽

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

复制代码

class DES
{
    var $key;
    var $iv; //偏移量

    function DES($key = '11001100', $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             $binData .= chr ( hexdec ( substr ( $hexData, $i, 2 ) ) );
        }
        return $binData;
    }

asp.net程序代码

代码如下

复制代码

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;

namespace WindowsFormsApplication1
{
///

/// DES加密解密字符串
///

    public class DesEncryption
    {
        ///

/// DES加密字符串
///

        /// 待加密的字符串
        /// 加密密钥,要求为8位
        /// 加密成功返回加密后的字符串，失败返回null
        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;
            }
        }

///

/// DES解密字符串
///

        /// 待解密的字符串
        /// 解密密钥,要求为8位,和加密密钥相同
        /// 解密成功返回解密后的字符串，失败返回null
        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                 {
                    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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