Java-JSSE-SSL/TLS编程代码实例-单向认证

前一篇介绍了SSL/TLS双向认证的代码实例。

也可以选择使用单向认证，这种情况下client侧不需要提供证书。所以，

server侧只需要自己的keystore文件，不需要truststore文件

client侧不需要自己的keystore文件，只需要truststore文件（其中包含server的公钥）。

此外server侧需要在创建SSLServerSocket之后设定不需要客户端证书：setNeedClientAuth(false)

server代码

package learning.net.ssl;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.security.KeyStore;
import java.security.cert.X509Certificate;

import javax.net.ssl.HandshakeCompletedEvent;
import javax.net.ssl.HandshakeCompletedListener;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLPeerUnverifiedException;
import javax.net.ssl.SSLServerSocket;
import javax.net.ssl.SSLServerSocketFactory;
import javax.net.ssl.SSLSocket;

public class CatServerNoClientAuth implements Runnable, HandshakeCompletedListener {

public static final int SERVER_PORT = 11123;

private final Socket _s;

public CatServerNoClientAuth(Socket s) {
_s = s;
}

public static void main(String[] args) throws Exception {
String serverKeyStoreFile = "c:\\_tmp\\catserver.keystore";
String serverKeyStorePwd = "catserverks";
String catServerKeyPwd = "catserver";

KeyStore serverKeyStore = KeyStore.getInstance("JKS");
serverKeyStore.load(new FileInputStream(serverKeyStoreFile), serverKeyStorePwd.toCharArray());

KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
kmf.init(serverKeyStore, catServerKeyPwd.toCharArray());

SSLContext sslContext = SSLContext.getInstance("TLSv1");
sslContext.init(kmf.getKeyManagers(), null, null);

SSLServerSocketFactory sslServerSocketFactory = sslContext.getServerSocketFactory();
SSLServerSocket sslServerSocket = (SSLServerSocket) sslServerSocketFactory.createServerSocket(SERVER_PORT);
sslServerSocket.setNeedClientAuth(false);

while (true) {
SSLSocket s = (SSLSocket)sslServerSocket.accept();
CatServerNoClientAuth cs = new CatServerNoClientAuth(s);
s.addHandshakeCompletedListener(cs);
new Thread(cs).start();
}
}

@Override
public void run() {
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(_s.getInputStream()));
PrintWriter writer = new PrintWriter(_s.getOutputStream(), true);

writer.println("Welcome~, enter exit to leave.");
String s;
while ((s = reader.readLine()) != null && !s.trim().equalsIgnoreCase("exit")) {
writer.println("Echo: " + s);
}
writer.println("Bye~");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
_s.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}

@Override
public void handshakeCompleted(HandshakeCompletedEvent event) {
try {
X509Certificate cert = (X509Certificate) event.getPeerCertificates()[0];
} catch (SSLPeerUnverifiedException ex) {
System.out.println("handshakeCompleted, SSLPeerUnverified.");
}
}
}

client代码

package learning.net.ssl;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.security.KeyStore;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManagerFactory;

public class FoxClientNoClientAuth {
public static void main(String[] args) throws Exception {
String clientTrustKeyStoreFile = "c:\\_tmp\\foxclienttrust.keystore";
String clientTrustKeyStorePwd = "foxclienttrustks";

KeyStore clientTrustKeyStore = KeyStore.getInstance("JKS");
clientTrustKeyStore.load(new FileInputStream(clientTrustKeyStoreFile), clientTrustKeyStorePwd.toCharArray());

TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
tmf.init(clientTrustKeyStore);

SSLContext sslContext = SSLContext.getInstance("TLSv1");
sslContext.init(null, tmf.getTrustManagers(), null);

SSLSocketFactory socketFactory = sslContext.getSocketFactory();
Socket socket = socketFactory.createSocket("localhost", CatServer.SERVER_PORT);

PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));

send("hello", out);
send("exit", out);
receive(in);
socket.close();
}

public static void send(String s, PrintWriter out) throws IOException {
System.out.println("Sending: " + s);
out.println(s);
}

public static void receive(BufferedReader in) throws IOException {
String s;
while ((s = in.readLine()) != null) {
System.out.println("Reveived: " + s);
}
}
}