#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,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"&gt; 待解密的字符串</param> /// <param name="sKey"&gt; 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,inputByteArray.Length); cs.FlushFinalBlock(); StringBuilder ret = new StringBuilder(); return HttpContext.Current.Server.UrlDecode(System.Text.Encoding.Default.GetString(ms.ToArray())); }

endregion

}

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 ) );
$str = mcrypt_cbc( MCRYPT_DES,$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,- 1 * $pad );
}

}
?>