使用RSACryptoProvider验证C#中的PHP OpenSSL签名 - Verifying PHP OpenSSL signature in C# with RSACryptoProvider

Verifying PHP OpenSSL signature in C# with RSACryptoProvider

我正试图使用C#RSACryptoProvider.VerifyData验证OpenSSL签名(created using openssl_sign with SHA1 in PHP)。使用正确的公钥证书返回false。

你知道如何成功做到这一点吗？

编辑：

我尝试使用以下代码使用BouncyCastle验证OpenSSL SHA1签名，但验证失败。签名的计算方式是否不同？如何使用OpenSSL创建可由验证的签名。NET？

byte[] signatureBytes = UTF8Encoding.Default.GetBytes(signature);
  byte[] dataBytes = UTF8Encoding.Default.GetBytes(data);
  StreamReader sr = new StreamReader(Path.Combine(@"C:'test", @"test'test.crt"));
  PemReader pr = new PemReader(sr);
  Org.BouncyCastle.X509.X509Certificate cert = (Org.BouncyCastle.X509.X509Certificate)pr.ReadObject();
  ISigner sig = SignerUtilities.GetSigner("SHA1WithRSAEncryption");
  sig.Init(false, cert.GetPublicKey());
  sig.BlockUpdate(dataBytes, 0, dataBytes.Length);
  if (sig.VerifySignature(signatureBytes)) {
    Console.WriteLine("all good!");
  }

PHP代码：

function signTokenWithPrivateKey($message, $keyLocation) {
  try {
    if (file_exists($keyLocation)) {
      $privateKey= openssl_get_privatekey(file_get_contents($keyLocation));
      $signature = '';
      if (!openssl_sign($message, $signature, $privateKey)) {
        die('Failed to encrypt');
      }
      openssl_free_key($privateKey);
    }
  }
  catch (Exception $ex) {
  }
  return $signature;
}

下面的代码应该能帮你完成任务。它从给定的文件路径加载证书，然后使用公钥根据给定的签名验证数据。如果有效，则返回true。

            byte[] signature = Convert.FromBase64String(Signature);
            byte[] data = Encoding.UTF8.GetBytes(Data);
            var x509 = new X509Certificate2(Path.Combine(@"C:'test", @"test'test.crt"));
            var rsa = x509.PublicKey.Key as RSACryptoServiceProvider;
            if (rsa == null)
            {
                LogMessage("Authorize", "Invalid", Level.Alert);
                return false;
            }
            string sha1Oid = CryptoConfig.MapNameToOID("SHA1");
            //use the certificate to verify data against the signature
            bool sha1Valid = rsa.VerifyData(data, sha1Oid, signature);
            return sha1Valid;