使用c＃中的公钥加密数据，并使用php中的私钥解密数据 [英] Encrypt data by using a public key in c# and decrypt data by using a private key in php

问题描述

我正在尝试加密C＃中的JSON字符串，使用OpenSSL RSA解密PHP。

以下代码位于C＃中：

  public static string EncryptData（string data）
 {
 string key = @----- BEGIN PUBLIC KEY ----- 
 MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC / J / txQvYBm5iOHRRRtgdXd5hq 
 DEavxy5OExSiwjJgOgT72A9GX7 + E7QYfhUZJTGtf + / J84tuJPx6 / Ff1dZa1XRW84 
 / n5m7fw93CTVwpfRFi0Owenor44zgk6ABSfMlCzwGfdcS8AFiWCFUBpatKte6PaO 
 / WfYK7qz / 5faSp3FawIDAQAB 
 ----- END PUBLIC键 -  - -; 
 
 OpenSSL.Crypto.CryptoKey pKey = OpenSSL.Crypto.CryptoKey.FromPublicKey（key，null）; 
 OpenSSL.Crypto.RSA rsa = pKey.GetRSA（）; 
 
 byte [] encryptedData = rsa.PublicEncrypt（Encoding.UTF8.GetBytes（data），OpenSSL.Crypto.RSA.Padding.PKCS1）; 
 rsa.Dispose（）; 
 return Convert.ToBase64String（encryptedData）; 
} 
  

然后我发送编码的 encryptedData 到PHP并将其放入 PrivateKeyDecrypt 函数中。

PHP中的代码：

 <？php 
 //包含lib 
 //require_once('OpenSSL.php'）; 
 
 $ ssl = new OpenSSL（）; 
 $ SSL的> loadPrivateKeyWithoutPath（'----- BEGIN RSA私钥----- 
 MIICXQIBAAKBgQC + wVuIECnd7dvt7yqoElg4DL8jSKFpUavKfviSBE2Z + 5z5YWnf 
 i4mp / r0P0jVbE + dfqReaIr4UOt // hPvwvioAJ576KPOCTYZiIGehkqafGWS + 01wH 
 nAPSj / C7Xt7F9Mh5McH4CnBR5VN93KKZtQtfNsNPPBdXwQuquONOUgUgTwIDAQAB 
 AoGAIQkvpvLVrV / CVQS0qIL00FA00hGEEs9YJyuyNOeV4PMYjn / 2bAaogs5hQ9ot 
 72YVDhYkxkb6EFrZ7FDFqT3l2 / BpQEsJ6 / GQq2gX0rYGfJ5sWrN + KIuSJr4FWSN + 
 LrvIEr35hKHY6mytiQg9D58b5kSjaB9ea / QHH / hJL2VfWGECQQDlBBJsccR2ZzzH 
 QN5omwFrUuxnqraY5LyZB8xUnqo9iDULO + GTcW / 5eO9TBoWuDf1Ul3Snts9Tb + UD 
 UYL1y5onAkEA1Ts182anQHCjUtp2hooLjDcOvIK3gi5TchqHW6T4K3tNtnbfOB9P 
 gMNgcKljjXlQXl3ornvLTYBC483MS4RpmQJAZMiS9whmBhlOpP1GI1C7oih / Auwc 
 qVJYMRw + bqrYjnWnqkby8XkFZwsyfx4qrDtZ1eVFIB2SRczGHyc688JjFwJBAIxa 
 lx6J2VlfSwIEbrQMNaGrs / V9jVERMTgQIjy + J + P / G54ZDMEiSvCUqew + cxryWWZk 
 Jf6D2cQ / wsez9N9YXzECQQDMH6jS9vp7aabI2UKy5RhTqvP6kRmi28 /糖化血红蛋白/ 8QrFx 
 tldiw2THvc4 + 4QT9tuv5OA6xRnEO5mt5u3vFHciqeRR7 
 ----- END RSA私钥----- ）; 
 
 public function PrivateKeyDecrypt（$ raw_data，$ base64 = TRUE）
 {
 if（$ this-> privateKey == NULL）
 trigger_error（Private key尚未指定。，E_USER_ERROR）; 
 
如果（！openssl_private_decrypt（（$ base64）？base64_decode（$ raw_data）：$ raw_data，$ decryptpted_data，$ this-> privateKey，$ this-> padding））
 trigger_error （无法解密数据，E_USER_ERROR）; 
 
 return $ decryptpted_data; 
} 
  

当我调用 PrivateKeyDecrypt 函数是：

 致命错误：无法解密数据... 
  

有没有人知道是什么原因导致此错误？

解决方案

使您的填充匹配 OpenSSL.Crypto.RSA.Padding.PKCS1 在你的C＃代码。

I'm trying to encrypt a JSON string in C# en decrypt it in PHP by using OpenSSL RSA.

The following code is in C#:

public static string EncryptData(string data)
{
    string key = @"-----BEGIN PUBLIC KEY-----
    MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC/J/txQvYBm5iOHRRRtgdXd5hq
    DEavxy5OExSiwjJgOgT72A9GX7+E7QYfhUZJTGtf+/J84tuJPx6/Ff1dZa1XRW84
    /n5m7fw93CTVwpfRFi0Owenor44zgk6ABSfMlCzwGfdcS8AFiWCFUBpatKte6PaO
    /WfYK7qz/5faSp3FawIDAQAB
    -----END PUBLIC KEY-----";

    OpenSSL.Crypto.CryptoKey pKey = OpenSSL.Crypto.CryptoKey.FromPublicKey(key, null);
    OpenSSL.Crypto.RSA rsa = pKey.GetRSA();

    byte[] encryptedData = rsa.PublicEncrypt (Encoding.UTF8.GetBytes(data), OpenSSL.Crypto.RSA.Padding.PKCS1);
    rsa.Dispose();
    return Convert.ToBase64String (encryptedData);
}

then I send the encoded encryptedData to PHP and put it into the PrivateKeyDecrypt function.

Code in PHP:

<?php
// include the lib
//require_once('OpenSSL.php');

$ssl = new OpenSSL();
$ssl->loadPrivateKeyWithoutPath('-----BEGIN RSA PRIVATE KEY-----
MIICXQIBAAKBgQC+wVuIECnd7dvt7yqoElg4DL8jSKFpUavKfviSBE2Z+5z5YWnf
i4mp/r0P0jVbE+dfqReaIr4UOt//hPvwvioAJ576KPOCTYZiIGehkqafGWS+01wH
nAPSj/C7Xt7F9Mh5McH4CnBR5VN93KKZtQtfNsNPPBdXwQuquONOUgUgTwIDAQAB
AoGAIQkvpvLVrV/CVQS0qIL00FA00hGEEs9YJyuyNOeV4PMYjn/2bAaogs5hQ9ot
72YVDhYkxkb6EFrZ7FDFqT3l2/BpQEsJ6/GQq2gX0rYGfJ5sWrN+KIuSJr4FWSN+
LrvIEr35hKHY6mytiQg9D58b5kSjaB9ea/qhh/hJL2VfWGECQQDlBBJsccR2ZzzH
QN5omwFrUuxnqraY5LyZB8xUnqo9iDULO+GTcW/5eO9TBoWuDf1Ul3Snts9Tb+uD
UYL1y5onAkEA1Ts182anQHCjUtp2hooLjDcOvIK3gi5TchqHW6T4K3tNtnbfOB9P
gMNgcKljjXlQXl3ornvLTYBC483MS4RpmQJAZMiS9whmBhlOpP1GI1C7oih/Auwc
qVJYMRw+bqrYjnWnqkby8XkFZwsyfx4qrDtZ1eVFIB2SRczGHyc688JjFwJBAIxa
lx6J2VlfSwIEbrQMNaGrs/V9jVERMTgQIjy+j+P/G54ZDMEiSvCUqew+cxryWWZk
Jf6D2cQ/wsez9N9YXzECQQDMH6jS9vp7aabI2UKy5RhTqvP6kRmi28/GHb/8QrFx
tldiw2THvc4+4QT9tuv5OA6xRnEO5mt5u3vFHciqeRR7
-----END RSA PRIVATE KEY-----');

public function PrivateKeyDecrypt($raw_data, $base64 = TRUE)
{
    if ($this->privateKey == NULL)
        trigger_error("Private key has not been specified.", E_USER_ERROR);

    if (!openssl_private_decrypt(($base64) ? base64_decode($raw_data) : $raw_data, $decrypted_data, $this->privateKey, $this->padding))
        trigger_error("Unable to decrypt data.", E_USER_ERROR);

    return $decrypted_data;
}

The error I get when I call the PrivateKeyDecrypt function is:

FATAL ERROR: unable to decrypt data in ...

Does anyone have any idea what causes this error?

解决方案

Make your padding match OpenSSL.Crypto.RSA.Padding.PKCS1 in your C# code.

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