php+c#如何一致实现DES加密解密的示例代码分享

下面小编就为大家带来一篇php实现和c#一致的DES加密解密实例。小编觉得挺不错的，现在就分享给大家，也给大家做个参考。一起跟随小编过来看看吧

PHP实现和c#一致的DES加密解密，可以从网上搜到一大堆，但是测试后发现都没法用。以下正确代码是我经过苦苦才找到的。希望大家在系统整合时能用的上。

注意：key的长度为8位以内。

//C# 版DES 加解密算法 using System;   using System.Data;   using System.Configuration;   using System.Web;   using System.Web.Security;   using System.Web.UI;   using System.Web.UI.WebControls;   using System.Web.UI.WebControls.WebParts;   using System.Web.UI.HtmlControls;   using System.Data.SqlClient;   using System.Security.Cryptography;   using System.IO;   using System.Text;   public class Des{     //加解密密钥   private static string skey = "12345678";   //初始化向量   private static byte[] DESIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };            #region DESEnCode DES加密           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();           }          #endregion          /// <summary>         ///          /// </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>         #region DESDeCode DES解密         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 <p>5本文来源gao!daima.com搞$代!码#网#</p><pre>搞代gaodaima码

CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write); cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); StringBuilder ret = new StringBuilder(); return HttpContext.Current.Server.UrlDecode(System.Text.Encoding.Default.GetString(ms.ToArray())); } #endregion }

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