Reversible encryption algorithm that can be shared between PHP and asp.net C#

Reversible encryption algorithm that can be shared between PHP and asp.net C#_PHP tutorial

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Release： 2016-07-20 11:12:10

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Because of the work requirements, we need to generate encryption in PHP and then decrypt the password received in asp.net. Below I found a reversible encryption algorithm that can be shared between PHP and asp.net C#. Students who need to know more can refer to it.

php encryption algorithm

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代码如下

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class 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;
}

class DES
{
var $key;
var $iv; // partial Shift amount

function DES($key = '11001100', $iv=0) {
//key length 8, for example: 1234abcd
$this->key = $ key;
                                                                                                                                                                                                                                                                                                ->iv = $iv; //mcrypt_create_iv ( mcrypt_get_block_size (MCRYPT_DES, MCRYPT_MODE_CBC), MCRYPT_DEV_RANDOM );
                                                                                                                                                   . > //Encryption, returns uppercase hexadecimal string
         $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) ) ); str) {
                                                                                                                                                                                                             strBin, MCRYPT_DECRYPT, $this->iv );
            $str = $this->pkcs5Unpad($str); > function hex2bin($hexData) {
$binData = "";
for($i = 0; $i < strlen ( $hexData ); $i += 2) {
$binData .= chr ( hexdec ( substr ( $hexData, $i, 2 ) ) );
                                                             , $blocksize) {
$pad = $blocksize - (strlen ( $text ) % $blocksize);
return $text . str_repeat ( chr ( $pad ), $pad );
}
                                                                                                                                                                                                                                                                                                    . $ Text)
Return false;
If (STRSPN ($ Text, Chr ($ Pad), Strlen ($ Text) -$ Pad)! = $ Pad)
RETURN FALSE; < br />          return substr ($text, 0, - 1 * $pad);

asp.net program code

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The code is as follows

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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;

namespace WindowsFormsApplication1
{
///

/// DES encryption and decryption string
///

public class DesEncryption
{
///

/// DES encrypted string
///

/// Wait Encrypted string & lt;/Param & GT;
/// & lt; Param name = "enCryptkey" & gt; encrypted key, requires 8 -bit & lt;/Param & gt;
/// & lt; Returns the encrypted string, returns null on failure                        byte[] rgbKey = ASCIIEncoding.ASCII.GetBytes(encryptKey.Substring(0, 8));
byte[] rgbIV = rgbKey; 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())
                                                                                                                                  .Appndformat ("{0: x2}", b);
}
Ret.tostring ();
Return Ret.tostring (); 🎜>           return null;
                                                                                                                                                                                         ;

///

String
                                                                                                                                                                                                                                                                                        . returns>Decryption returns the decrypted string if successful, returns null if failed
public static string DecryptDES(string decryptString, string decryptKey = "11001100")
{
{
byte[] rgbKey = ASCIIEncoding.ASCII.GetBytes(decryptKey);
byte[] rgbIV = rgbKey;
byte[] inputByteArray = new byte[decryptString.Length / 2];
for (int x = 0; x < decryptString.Length / 2;             inputByteArray[x | 🎜> 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());
                                                                                                                                                         }
}

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Because of work requirements, we need to generate encryption in php and then decrypt the password received in asp.net, as follows I found a reversible encryption algorithm that can be used between PHP and asp.net C#. I need to know more about it...