首先创建服务器端私有密钥和公共密钥

1, keytool -genkey -alias clientkey -keystore kserver.ks

密码: serverpass

2, keytool -export -alias serverkey -keystore kserver.ks -file server.crt

3, keytool -import -alias serverkey -file server.crt -keystore tclient.ks

密码: clientpublicpass

下面创建客户器端私有密钥和公共密钥

1, keytool -genkey -alias clientkey -keystore kclient.ks

密码: clientpass

2, keytool -export -alias clientkey -keystore kclient.ks -file client.crt

3, keytool -import -alias clientkey -file client.crt -keystore tserver.ks

密码: serverpublicpass

把服务器端产生的公共密钥放到客户端, 同样把客户端创建的公共密钥放到服务器端.

下面是服务器端代码:

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.FileInputStream;

import java.io.InputStream;

import java.io.OutputStream;

import java.net.Socket;

import java.security.KeyStore;

import javax.net.ssl.KeyManagerFactory;

import javax.net.ssl.SSLContext;

import javax.net.ssl.SSLServerSocket;

import javax.net.ssl.TrustManagerFactory;

public class SSLTestServer {

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

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("cert/kserver.ks"), "serverpass".toCharArray());

tks.load(new FileInputStream("cert/tserver.ks"), "serverpublicpass".toCharArray());

kmf.init(ks, "serverpass".toCharArray());

tmf.init(tks);

ctx.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);

SSLServerSocket serverSocket = (SSLServerSocket) ctx.getServerSocketFactory().createServerSocket(8443);

serverSocket.setNeedClientAuth(true);

while (true) {

try {

Socket s = serverSocket.accept();

InputStream input = s.getInputStream();

OutputStream utput = s.getOutputStream();

BufferedInputStream bis = new BufferedInputStream(input);

BufferedOutputStream bos = new BufferedOutputStream(output);

byte[] buffer = new byte[20];

int length = bis.read(buffer);

System.out.println("Receive: " + new String(buffer, 0, length).toString());

bos.write("Hello".getBytes());

bos.flush();

s.close();

} catch (Exception e) {

System.out.println(e);

}

}

}

}

下面是客户端代码:

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.FileInputStream;

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;

public class SSLTestClient {

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

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("cert/kclient.ks"), "clientpass".toCharArray());

tks.load(new FileInputStream("cert/tclient.ks"), "clientpublicpass".toCharArray());

kmf.init(ks, "clientpass".toCharArray());

tmf.init(tks);

ctx.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);

SSLSocket sslSocket = (SSLSocket) ctx.getSocketFactory().createSocket("localhost", 8443);

InputStream input = sslSocket.getInputStream();

OutputStream utput = sslSocket.getOutputStream();

BufferedInputStream bis = new BufferedInputStream(input);

BufferedOutputStream bos = new BufferedOutputStream(output);

bos.write("Hello".getBytes());

bos.flush();

byte[] buffer = new byte[20];

int length = bis.read(buffer);

System.out.println(new String(buffer, 0, length));

sslSocket.close();

}

}

常见的HTTPS传输, 不需要进行客户端认证, 也就是单向认证. 这时也就不需要创建客户端的私钥和公钥. 服务器端也只要配置一下服务器端的私钥即可, 当客户端浏览器访问时会生成一个证书文件,类似于上面创建的crt文件. 如果需要程序访问,可以通过这个crt文件生成一个keystore. 然后是用这个keystore作为trust keystore即可.

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