如何解密在C＃中使用RSA加密的文本[重复]

问题描述：

This question already has an answer here:

Encrypt and Decrypt text with RSA in PHP 6 answers

I need to convert code from C# to PHP, with identical results. In C# I finished it pretty quickly, but now need to convert the following code to php:

public static string RsaDecrypt(string privateKey, string src)
{
    CspParameters csp = new CspParameters();
    csp.Flags = CspProviderFlags.UseMachineKeyStore;
    RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(csp);
    rsa.FromXmlString(privateKey);
    return RsaDecrypt(rsa, src);
}

public static string RsaDecrypt(RSACryptoServiceProvider rsa, string src)
{
    byte[] srcData = Convert.FromBase64String(src);
    byte[] destData = rsa.Decrypt(srcData, false);
    return Encoding.UTF8.GetString(destData);
}

I'm trying to hours and I can not, I'm using the phpseclib0.2.1a file and the code:

Pastebin

The Problem in PHP is returning the following error:

Notice: Decryption error in E:\AppServWWW\Request\Flash\Crypt\RSA.php on line 1582

@EDIT: My $_GET["p"] is

cwQPQLSW%2FQ70AUmBzkZ9c7d9MrEAcPAAN1lRG937XZuibDOE304i8894uowlC1OANnWEim6suOxzhEHZl0BR1G1audk4CWG1TUSqAo4MO5FBfVbmcLVMx1KPV9%2FeMzil%2BHM1XwyX3Dm0h%2F0uAxORfpa3waq0iOemkUYBq2lXDEU%3D

</div>

此问题已经存在这里有一个答案： p>

使用PHP中的RSA加密和解密文本 6 answers li> ul> div>

我需要将代码从C＃转换为PHP，结果相同。 C＃我很快就完成了，但现在需要将以下代码转换为php： p>

  public static string RsaDecrypt（string privateKey，string src）
 {
 CspParameters csp  = new CspParameters（）; 
 csp.Flags = CspProviderFlags.UseMachineKeyStore; 
 RSACryptoServiceProvider rsa = new RSACryptoServiceProvider（csp）; 
 
rsa.FromXmlString（privateKey）; 
返回RsaDecrypt（rsa，src）; 
} \  n 
public st  atic string RsaDecrypt（RSACryptoServiceProvider rsa，string src）
 {
 byte [] srcData = Convert.FromBase64String（src）; 
 byte [] destData = rsa.Decrypt（srcData，false）; 
返回Encoding.UTF8。  GetString（destData）; 
} 
  code>  pre> 
 
 我正在尝试几个小时而我不能，我正在使用 phpseclib0.2.1a 文件和代码： p> 
 
 
  Pastebin   p> 
 
 
 PHP中的问题返回以下错误： p>  
 
 
 
  注意 strong>：第1582行E：\ AppServWWW \ Request \ Flash \ Crypt \ RSA.php中的解密错误 p> 
  blockquote  > 
 
 
  @EDIT 强>：我的$ _GET [ “p”]是 p> 
 
 

 
  cwQPQLSW％2FQ70AUmBzkZ9c7d9MrEAcPAAN1lRG937XZuibDOE304i8894uowlC1OANnWEim6suOxzhEHZl0BR1G1audk4CWG1TUSqAo4MO5FBfVbmcLVMx1KPV9％2FeMzil％2BHM1XwyX3Dm0h  ％2F0uAxORfpa3waq0iOemkUYBq2lXDEU％3D  p> 
  blockquote> 
  div>

答

The latest version of phpseclib is 0.3.1 so, first, I'd recommend you upgrade.

Second... phpseclib does OAEP padding by default. C# is probably doing PKCS1 padding by default. So you'd need to do $rsa->setEncryptionMode(CRYPT_RSA_ENCRYPTION_PKCS1); before doing the actual decryption in PHP.

如何解密在C＃中使用RSA加密的文本[重复]

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