Welcome 微信登录

首页 / 网页编程 / PHP / PHP和C#可共用的可逆加密算法详解

在一些项目中要求在php中生成加密,然后在asp.net中接受过来的密码再解密,下面和大家分享一个PHP与asp.net C#可共用的可逆加密算法,感兴趣的可以参考参考。
php加密算法:
<?phpclass 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 < 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 );}}?>
asp.net程序代码:
using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Security.Cryptography;using System.Text;namespace WindowsFormsApplication1{/// <summary>/// DES加密解密字符串/// </summary>public class DesEncryption{/// <summary>/// DES加密字符串/// </summary>/// <param name="encryptString">待加密的字符串</param>/// <param name="encryptKey">加密密钥,要求为8位</param>/// <returns>加密成功返回加密后的字符串,失败返回null</returns>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;}}/// <summary>/// DES解密字符串/// </summary>/// <param name="decryptString">待解密的字符串</param>/// <param name="decryptKey">解密密钥,要求为8位,和加密密钥相同</param>/// <returns>解密成功返回解密后的字符串,失败返回null</returns>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 < decryptString.Length / 2; 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;}}}}
以上就是PHP和C#可共用的可逆加密算法,希望对大家的学习有所帮助。