将openssl公钥导入C# RSACryptoServiceProvider

Question

我在c++中创建服务器端程序，用openssl库创建RSA公钥和私钥，然后通过网络为客户端分发公钥。在客户端，我编写了c#程序，首先获取公钥，然后加密数据。但是我不能将公钥添加到RSACryptoServiceProvider中。

是否有将RSA公钥导入RSACryptoServiceProvider的方法？

--开始使用RSA公钥- MIIBCAKCAQEAsgVkBAQPdtRtICOqWdZ0ZiMAb9UvUX0BaxANN22bL5RzTJAL+PmG QKaA61B1m0NPOjdIIXMwkaAzXOmzuNwKm2Ugb8jO15B6ovAhe73jAoltFFdi10Te zCJgT8/xLAWt1mOXCAK9vD4Pv5LMN76BF+YjEVvylQ3l87255ElZrP4UluCGj0U3 uczW8+Cqao3QoL6xSxPU9jSK0FT/OhAL312cAXYbnaiJH+wAf1kkv4ez28XAlFId MlCmh2n8YSuxk1GdOXaps8IoluDzmHeQ8vk2quQMPpFXzfCayBoPm9lVPOjOQkAH 8ClJda0Uy052N5aE0BuyX1KRxOSdRRKk9wIBAw==

-最终RSA公钥

Answer 1

您可以使用BouncyCastle来完成这个任务，不幸的是，这是解决这个问题的唯一方法之一。

PemReader reader = new PemReader(new StreamReader(File.Open(file, FileMode.Open)));
AsymmetricCipherKeyPair = (AsymmetricCipherKeyPair)reader.ReadObject();
reader.Reader.Close();

这段代码没有经过测试，所以其中一些方法名可能会被忽略。然后可以使用DotNetUtilities类中的静态方法将其转换为RSACryptoServiceProvider。

Answer 2

这是一个示例代码，演示如何在RSACryptoServiceProvider中c#中添加RSA公钥。

public Stream GenerateStreamFromString(string s)
{
     MemoryStream stream = new MemoryStream();
     StreamWriter writer = new StreamWriter(stream);
     writer.Write(s);
     writer.Flush();
     stream.Position = 0;
     return stream;
}

string publicKey = "-----BEGIN RSA PUBLIC KEY-----\nMIIBCAKCAQEAoNhWLaL11Zy4L6Cp2IDFv2JGnPkoRnFrKTy5b23uszzbSammdIwi\n6Wtr/7Zg3wmqlwt/yhH4F6rwSysB04xvMnWjuRsw2Kz4u7FHMPlgrIObGDFqcEms\nllNTA8xSWh/+TPfxWdAN5bpUwLYo6Mizl+VStL4CtVQFS8/mQSUnCju3csfxNGlk\nPQdbwZWB/5DdswrhkUcob8wl3bCCZCz3zWzMNJFTgTEiZQr+qTtuY7ST+fmpO33r\nDJoboysiGPKUkQixKcG2s1jJJkQircAHkmiQPS6PlUapNahFNaPa3rh1zR4l5NN6\nxWudPYQhZ8VvD4C8eT2bfrUlsikAyXIX4QIBAw==\n-----END RSA PUBLIC KEY-----\n"
using (Stream stream = GenerateStreamFromString(publicKey))
{

      PemReader pemReader = new PemReader(new StreamReader(stream));
      AsymmetricKeyParameter publicKey = (AsymmetricKeyParameter)pemReader.ReadObject();
      pemReader.Reader.Close();
      Org.BouncyCastle.Crypto.Parameters.RsaKeyParameters rsaPub = (Org.BouncyCastle.Crypto.Parameters.RsaKeyParameters)publicKey;

      RSAParameters RSAKeyInfo = Org.BouncyCastle.Security.DotNetUtilities.ToRSAParameters(rsaPub);

      RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(2048);
      RSA.ImportParameters(RSAKeyInfo);

      byte[] encryptedData = RSA.Encrypt(plainText, true);
}