从C#到PHP的RSA加密 [英] RSA encryption from From C# to PHP

问题描述

我需要连接到使用RSA加密的特定Web服务.使用NuSOAP和PHPseclib，我可以连接到服务器以获取用于RSA加密的公钥并将数据发送回服务器.

I need to connect to a certain webservice that uses RSA encryption. Using NuSOAP and PHPseclib I can connect to the server to get the public key used to RSA encrypt and send back data to the server.

在他们加密数据的方式中出现了问题，那里的开发人员给了我用C#编写的文档和示例，这些文档和示例很难理解并转换为PHP.唯一需要加密的是密码.

Problem arise in the way they are encrypting the data, the developer there gave me documentation and sample written in C# to which is hard to comprehend and convert to PHP. The only thing that needs to be encrypted is the password.

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using Dns.Lib.Compression;
    using Dns.Lib.Security.Cryptography;
    using ThirdPartyTest.ThirdPartyService;
    using SoapExtensionLib;

    private static string BaseServiceCall(int sysUserId, string password)
    {

            SecureMessageManager secureMessageManager = new SecureMessageManager();
            ThirdPartyService.Main client = new ThirdPartyService.Main();

            string dnPublicKey = client.GetPublicKey();//this is used to get the pbKey

            secureMessageManager.ImportThirdPartyRSAKey(dnPublicKey);

            string sessionId = Guid.NewGuid().ToString("N");

            string tokenRequestXml = @"<request>
<id>" + sysUserId + @"</id>
<password>" + secureMessageManager.RSAEncryptString(password) + @"</password>
<session>" + sessionId + @"</session>
<public>" + secureMessageManager.ExportPublicKey() + @"</public>
</request>";

            string tokenResonse = client.GetSommething(tokenRequestXml);
            //...
    }

secureMessageManager.ExportPublicKey()还能做什么?

这是我上面的PHP版本.

Here is my PHP version of the above.

require_once('RSA-PHPseclib0.3.5/Crypt/RSA.php');
require_once('nusoap.php');
    $sysUserId  = '.....';
    $pass       = '.....';
    $sessionId  = session_id();
    $pubKey     = "<rsakeyvalue><modulus>kdT4UUBowCepvTU3panVLnAWqKSIik8eSc5Sog0e7BOP2EoNVwer5RfxIICaWzVpJtPAQJYQ9AaW4qpp3qIw3g3DR7OTw/lvif6y5VemiRue6u4T2eef4AG3Ka0MoMhTtMxIRXGNqx6hPyPn40F9ZMFwprFupFl0Z2LPRLR3Fek=</modulus><exponent>AQAB</exponent></rsakeyvalue>";//The Public key received from an other program

    $rsa        = new Crypt_RSA();
    $return     = $rsa->loadKey($pubKey);
    $password   = base64_encode($rsa->encrypt($pass));

    $inputData  = "<request><id>$sysUserId</id><password>$password</password><session>$sessionId</session><public>$pubKey</public></request>";
    $params     = array('inputData'=>$inputData);
    $result     = $client->call('GetSommething', $params, $namespaces, '', '',null,'document','literal');

我从他们的服务器收到的错误是'服务器无法处理请求.--->解码OAEP填充时发生错误.我收集到的信息与我加密密码的方式有关.花了40多个小时打了砖墙，不知道该怎么办.

The error that I receive from they server is 'Server was unable to process request. ---> Error occurred while decoding OAEP padding.'. I have gather it has something to do with the way I encrypt the password. Having spent over 40 hours hitting a brick wall, not sure what to do.

推荐答案

解决方案此处需要对默认phpseclib库进行一些更改，以使其与.net库进行加密/解密兼容.
我感到惊讶的是，PHP加密/解密RSA的方式与C#进行加密的方式之间的不兼容之类的东西虽然有所不同，但涉及的话题很少.

Got the solution here and Here There are some changes that needs to be made to the default phpseclib library to make it compatible to encrypt/decrypt with the .net libraries.
I am just surprised that Something as obvious as incompatibility between the way PHP encrypt/decrypt RSA and the way C# does it are somehow different but very few topic on it.

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