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 } |
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<?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 ); } } ?> |
以上这篇php实现和c#一致的DES加密解密实例就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持服务器之家。