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php实现和c#一致的DES加密解密
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 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 }
1 <?php 2 class DES 3 { 4 var $key; 5 var $iv; //偏移量 6 7 function DES( $key, $iv=0 ) { 8 //key长度8例如:1234abcd 9 $this->key = $key; 10 if( $iv == 0 ) { 11 $this->iv = $key; //默认以$key 作为 iv 12 } else { 13 $this->iv = $iv; //mcrypt_create_iv ( mcrypt_get_block_size (MCRYPT_DES, MCRYPT_MODE_CBC), MCRYPT_DEV_RANDOM ); 14 } 15 } 16 17 function encrypt($str) { 18 //加密，返回大写十六进制字符串 19 $size = mcrypt_get_block_size ( MCRYPT_DES, MCRYPT_MODE_CBC ); 20 $str = $this->pkcs5Pad ( $str, $size ); 21 return strtoupper( bin2hex( mcrypt_cbc(MCRYPT_DES, $this->key, $str, MCRYPT_ENCRYPT, $this->iv ) ) ); 22 } 23 24 function decrypt($str) { 25 //解密 26 $strBin = $this->hex2bin( strtolower( $str ) ); 27 $str = mcrypt_cbc( MCRYPT_DES, $this->key, $strBin, MCRYPT_DECRYPT, $this->iv ); 28 $str = $this->pkcs5Unpad( $str ); 29 return $str; 30 } 31 32 function hex2bin($hexData) { 33 $binData = ""; 34 for($i = 0; $i < strlen ( $hexData ); $i += 2) { 35 $binData .= chr ( hexdec ( substr ( $hexData, $i, 2 ) ) ); 36 } 37 return $binData; 38 } 39 40 function pkcs5Pad($text, $blocksize) { 41 $pad = $blocksize - (strlen ( $text ) % $blocksize); 42 return $text . str_repeat ( chr ( $pad ), $pad ); 43 } 44 45 function pkcs5Unpad($text) { 46 $pad = ord ( $text {strlen ( $text ) - 1} ); 47 if ($pad > strlen ( $text )) 48 return false; 49 if (strspn ( $text, chr ( $pad ), strlen ( $text ) - $pad ) != $pad) 50 return false; 51 return substr ( $text, 0, - 1 * $pad ); 52 } 53 54 } 55 ?>
php实现和c#一致的DES加密解密
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