php实现和c#一致的DES加密解密实例_PHP教程

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。

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									//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 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  

									}

				?

									<?php 

									class DES 

									{ 

									  var $key; 

									  var $iv; //偏移量 

									  function DES( $key, $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} ); 

									    if ($pad > strlen ( $text )) 

									      return false; 

									    if (strspn ( $text, chr ( $pad ), strlen ( $text ) - $pad ) != $pad) 

									      return false; 

									    return substr ( $text, 0, - 1 * $pad ); 

									  } 

									} 

									?>