SSL套接字連接即使客戶端沒有發送證書也能正常工作？

Question

我是使用Java進行密碼學的新手。 我必須構建一個程序，在進行任何數據通信之前交換證書。 我正在使用sslSockets構建基本的客戶端 - 服務器程序，我沒有使用HTTP / S，這只是為了獲得額外的安全性。 （想知道Socket和SSLSocket之間的區別..它是否意味着一切都是自動加密的？）

這是我更新的服務器代碼：

public class SSLServerExample {
    final static String pathToStores = "C:/Users/XXX/Desktop/sslserverclientprogram";
    final static String keyStoreFile = "keystore.jks";
    final static String passwd = "changeit";

    final static int theServerPort = 8443;

    static boolean debug = false;



  public static void main(String args[]) throws Exception {

      String trustFilename = pathToStores + "/" + keyStoreFile;
//    System.out.println("Verifying KeyStore File of Client..");

    System.setProperty("javax.net.ssl.keyStore", trustFilename);
    System.setProperty("javax.net.ssl.keyStorePassword", passwd);
    if (debug)
        System.setProperty("javax.net.debug", "all");
        System.out.println("Setting up SSL parameters");

     // Initialize socket connection
       SSLServerSocketFactory sslssf = (SSLServerSocketFactory) SSLServerSocketFactory.getDefault();
    SSLServerSocket sslServerSocket = (SSLServerSocket)sslssf.createServerSocket(theServerPort);
    System.out.println("Server Started..Waiting for clients");
    sslServerSocket.setNeedClientAuth(true);
    SSLSocket sslSocket = (SSLSocket)sslServerSocket.accept();
    //sslSocket.startHandshake();
    System.out.println("Client Connected!");

    InputStream sslIS = sslSocket.getInputStream();

        OutputStream sslOS = sslSocket.getOutputStream();
        sslServerSocket.setNeedClientAuth(true);

    final int RSAKeySize = 1024;
    final String newline = "\n";

    Key pubKey = null;
    Key privKey = null; 
    boolean flag = sslSocket.getNeedClientAuth();
    System.out.println("Flag value: "+ flag);

該標志導致False，即使我將其設置為true並且客戶端發送由服務器解密而未相互驗證的數據。

我錯過了什么嗎？

請幫忙。

PS：我的客戶代碼：

public class SSLClientExample {
    final static String pathToStores = "C:/Users/XXX/Desktop/sslserverclientprogram";
    final static String trustStoreFile = "cacerts.jks";
    final static String passwd = "changeit";
    final static String INPUT_FILE = "E:/workspace/input.txt";
    final static String theServerName = "localhost";
    final static int theServerPort = 8443;

    static boolean debug = false;

  public static void main(String args[]) throws Exception {

      String trustFilename = pathToStores + "/" + trustStoreFile;
      System.out.println("Validating KeyStore file of Server..");

    System.setProperty("javax.net.ssl.trustStore", trustFilename);
    System.setProperty("javax.net.ssl.trustStorePassword", passwd);
    if (debug)
        System.setProperty("javax.net.debug", "all");


    SSLSocketFactory sslssf = (SSLSocketFactory) SSLSocketFactory.getDefault();
    SSLSocket sslSocket = (SSLSocket)sslssf.createSocket(theServerName, 8443);
    System.out.println("Connected to Server!");

Answer 1

你必須調用sslServerSocket.setNeedClientAuth(true); 在接受傳入的客戶端連接之前。 您已在建立連接后修改服務器套接字的配置。