Java和C#应用程序之间的SSL通信

本文关键字：SSL 通信 之间 应用程序 Java | 更新日期: 2023-09-27 18:26:49

我的目标是在用C#编写的Java服务器和客户端之间进行安全通信。

java服务器代码：

  System.setProperty("javax.net.ssl.keyStore","cert/mySrvKeystore");
  System.setProperty("javax.net.ssl.keyStorePassword","myPassword");
  SSLServerSocketFactory sslserversocketfactory =
            (SSLServerSocketFactory) SSLServerSocketFactory.getDefault();
  SSLServerSocket sslserversocket =  = (SSLServerSocket) sslserversocketfactory.createServerSocket(2389);
    while(true) {
    System.err.println("server w8 new connection");
     try {
            SSLSocket sslsocket = (SSLSocket) sslserversocket.accept();
            //sslsocket.startHandshake();
            in = sslsocket.getInputStream();
            out = sslsocket.getOutputStream();
            out.flush();
            String response = new String(receiveMessage());
            while (response != "end") {
                System.out.println("Server recv="+response);
                response = new String(receiveMessage());
                sendMessage(("echo="+response).getBytes());
            }
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }

和客户端用c#:编写

        client = new TcpClient() { SendTimeout = 5000, ReceiveTimeout = 5000 };
        IPEndPoint serverEndPoint = new IPEndPoint(IPAddress.Parse(host), port);
        client.Connect(serverEndPoint);
        client.NoDelay = true;
        Console.WriteLine("Client connected.");
        // Create an SSL stream that will close the client's stream.
        SslStream sslStream = new SslStream(client.GetStream(), false, ValidateServerCertificate, null);
        // The server name must match the name on the server certificate.
        try
        {
            sslStream.AuthenticateAsClient("someName");
        }
        catch (AuthenticationException error)
        {
            Console.WriteLine("Exception: {0}", error.Message);
            if (error.InnerException != null)
            {
                Console.WriteLine("Inner exception: {0}", error.InnerException.Message);
            }
            Console.WriteLine("Authentication failed - closing the connection.");
            client.Close();
            return;
        }
        ASCIIEncoding ascii = new ASCIIEncoding();
        SendData(ascii.GetBytes("Hello World"));

和

    public static bool ValidateServerCertificate(
          object sender,
          X509Certificate certificate,
          X509Chain chain,
          SslPolicyErrors sslPolicyErrors)
    {
        if (sslPolicyErrors == SslPolicyErrors.None)
            return true;
        Console.WriteLine("Certificate error: {0}", sslPolicyErrors);
        // Do not allow this client to communicate with unauthenticated servers.
        return false;
    }

并且我得到以下错误：在c#中

 A first chance exception of type "System.Security.Authentication.AuthenticationException" occurred in System.dll
 Certificate error: RemoteCertificateChainErrors
 Exception: The remote certificate is invalid according to the validation procedure.
 Authentication failed - closing the connection.

我知道问题可能是因为我使用了不同类型的证书，但我不知道如何在java中使用X509Certificate制作标准的sslServerSocket。有人能帮助我吗，举个好榜样，或者给我一些如何实现目标的建议？

附言：我一直在寻找bouncycastle库，因为它同时有java和c#实现，但我想使用标准库和语言的内置功能。

Java和C#应用程序之间的SSL通信

从您的示例来看，似乎不需要以编程方式生成证书和私钥。您可以使用keytool:在服务器密钥库中生成证书

keytool -genkey -alias myalias -keystore mykeystore.jks -dname "CN=www.example.com"

如果您使用的是Java 7的keytool:，那么最好使用SAN扩展

keytool -genkey -alias myalias -keystore mykeystore.jks -dname "CN=www.example.com" -ext san=dns:www.example.com

这里，www.example.com是客户端看到的主机名。您可以在Subject DN（dname）中添加其他内容，但要确保CN是主机名。

生成后，使用导出您的自签名证书

keytool -export myservercert.crt -alias myalias -keystore mykeystore.jks

然后，您应该能够从C#将其作为可信证书导入Windows证书存储中。

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