SSL

JAVA 双向SSL,SOCKET客户端/服务端
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实现技术:
JSSE(Java Security Socket Extension)
Server需要:
1)KeyStore: 其中保存服务端的私钥
2)Trust KeyStore:其中保存客户端的授权证书
Client需要:
1)KeyStore:其中保存客户端的私钥
2)Trust KeyStore:其中保存服务端的授权证书


使用Java自带的keytool命令,去生成这样信息文件:

1)生成服务端私钥,并且导入到服务端KeyStore文件中

2)根据私钥,导出服务端证书

3)将服务端证书,导入到客户端的Trust KeyStore中

采用同样的方法,生成客户端的私钥,客户端的证书,并且导入到服务端的Trust KeyStore中
1)keytool -genkey -alias clientkey -keystore kclient.keystore
2)keytool -export -alias clientkey -keystore kclient.keystore -file client.crt
3)keytool -import -alias clientkey -file client.crt -keystore tserver.keystore


Server:
Java代码
public class Server implements Runnable{   
  
    private static final int     DEFAULT_PORT                     = 7777;   
  
    private static final String SERVER_KEY_STORE_PASSWORD        = "123456";   
    private static final String SERVER_TRUST_KEY_STORE_PASSWORD = "123456";   
  
    private SSLServerSocket      serverSocket;   
  
    /**
      * 启动程序
      *
      * @param args
      */  
    public static void main(String[] args) {   
         Server server = new Server();   
         server.init();   
         Thread thread = new Thread(server);   
         thread.start();   
     }   
  
    public synchronized void start() {   
        if (serverSocket == null) {   
             System.out.println("ERROR");   
            return;   
         }   
        while (true) {   
            try {   
                 Socket s = serverSocket.accept();   
                 InputStream input = s.getInputStream();   
                 OutputStream output = s.getOutputStream();   
  
                 BufferedInputStream bis = new BufferedInputStream(input);   
                 BufferedOutputStream bos = new BufferedOutputStream(output);   
  
                byte[] buffer = new byte[20];   
                 bis.read(buffer);   
                 System.out.println("------receive:--------"+new String(buffer).toString());   
  
                 bos.write("yes".getBytes());   
                 bos.flush();   
  
                 s.close();   
             } catch (Exception e) {   
                 System.out.println(e);   
             }   
         }   
     }   
    public void init() {   
        try {   
             SSLContext ctx = SSLContext.getInstance("SSL");   
  
             KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");   
             TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509");   
  
             KeyStore ks = KeyStore.getInstance("JKS");   
             KeyStore tks = KeyStore.getInstance("JKS");   
  
             ks.load(new FileInputStream("src/ssl/kserver.keystore"), SERVER_KEY_STORE_PASSWORD.toCharArray());   
             tks.load(new FileInputStream("src/ssl/tserver.keystore"), SERVER_TRUST_KEY_STORE_PASSWORD.toCharArray());   
  
             kmf.init(ks, SERVER_KEY_STORE_PASSWORD.toCharArray());   
             tmf.init(tks);   
  
             ctx.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);   
  
             serverSocket = (SSLServerSocket) ctx.getServerSocketFactory().createServerSocket(DEFAULT_PORT);   
             serverSocket.setNeedClientAuth(true);   
         } catch (Exception e) {   
             System.out.println(e);   
         }   
     }   
  
    public void run() {   
        // TODO Auto-generated method stub   
         start();   
     }   



Client:
Java代码
package ssl;   
  
import java.io.BufferedInputStream;   
import java.io.BufferedOutputStream;   
import java.io.FileInputStream;   
import java.io.IOException;   
import java.io.InputStream;   
import java.io.OutputStream;   
import java.security.KeyStore;   
  
import javax.net.ssl.KeyManagerFactory;   
import javax.net.ssl.SSLContext;   
import javax.net.ssl.SSLSocket;   
import javax.net.ssl.TrustManagerFactory;   
  
/**
* SSL Client
*
* @author Leo
*/  
public class Client {   
  
    private static final String DEFAULT_HOST                     = "127.0.0.1";   
    private static final int     DEFAULT_PORT                     = 7777;   
  
    private static final String CLIENT_KEY_STORE_PASSWORD        = "123456";   
    private static final String CLIENT_TRUST_KEY_STORE_PASSWORD = "123456";   
  
    private SSLSocket            sslSocket;   
  
    /**
      * 启动客户端程序
      *
      * @param args
      */  
    public static void main(String[] args) {   
        Client client = new Client();   
         client.init();   
         client.process();   
     }   
  
  
    public void process() {   
        if (sslSocket == null) {   
             System.out.println("ERROR");   
            return;   
         }   
        try {   
             InputStream input = sslSocket.getInputStream();   
             OutputStream output = sslSocket.getOutputStream();   
  
             BufferedInputStream bis = new BufferedInputStream(input);   
             BufferedOutputStream bos = new BufferedOutputStream(output);   
  
             bos.write("1234567890".getBytes());   
             bos.flush();   
  
            byte[] buffer = new byte[20];   
             bis.read(buffer);   
             System.out.println(new String(buffer));   
  
             sslSocket.close();   
         } catch (IOException e) {   
             System.out.println(e);   
         }   
     }   
  
  
    public void init() {   
        try {   
             SSLContext ctx = SSLContext.getInstance("SSL");   
  
             KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");   
             TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509");   
  
             KeyStore ks = KeyStore.getInstance("JKS");   
             KeyStore tks = KeyStore.getInstance("JKS");   
  
             ks.load(new FileInputStream("src/ssl/kclient.keystore"), CLIENT_KEY_STORE_PASSWORD.toCharArray());   
             tks.load(new FileInputStream("src/ssl/tclient.keystore"), CLIENT_TRUST_KEY_STORE_PASSWORD.toCharArray());   
  
             kmf.init(ks, CLIENT_KEY_STORE_PASSWORD.toCharArray());   
             tmf.init(tks);   
  
             ctx.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);   
  
             sslSocket = (SSLSocket) ctx.getSocketFactory().createSocket(DEFAULT_HOST, DEFAULT_PORT);   
         } catch (Exception e) {   
             System.out.println(e);   
         }   
     }   
  



启动Server


启动Client,发送信息。

Server接收如下:正确解密
返回Client信息,

如此,就完成了服务端和客户端之间的基于身份认证的交互。

client采用kclient.keystore中的clientkey私钥进行数据加密,发送给server。
server采用tserver.keystore中的client.crt证书(包含了clientkey的公钥)对数据解密,如果解密成功,证明消息来自client,进行逻辑处理。

server采用kserver.keystore中的serverkey私钥进行数据加密,发送给client。
client采用tclient.keystore中的server.crt证书(包含了serverkey的公钥)对数据解密,如果解密成功,证明消息来自server,进行逻辑处理。

如果过程中,解密失败,那么证明消息来源错误。不进行逻辑处理。这样就完成了双向的身份认证。

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