Java SSL/TLS Socket实现
通信端无需向对方证明自己的身份，则称该端处于“客户模式”，否则称其处于“服务器模式”，无论是客户端还是服务器端，都可处于“客户模式”或者“服务器模式”
首先生成服务器端认证证书，使用java自带的keytool工具：
其中：
-genkey：生成一对非对称密钥
-keyalg：加密算法
-keystore：证书存放路径
-alias：密钥对别名，该别名是公开的
相同的方式，生成客户端认证证书，不过命名为client_rsa.key，别名为clientkey
使用jdk1.5，唯一需要引入的包为log4j-1.2.14.jar
客户端认证：
package com.test.client.auth; import java.io.FileInputStream;
import java.security.KeyStore;
import java.util.Properties; import javax.net.ssl.KeyManager;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory; import com.test.server.config.Configuration; public class Auth {
private static SSLContext sslContext; public static SSLContext getSSLContext() throws Exception{
Properties p = Configuration.getConfig();
String protocol = p.getProperty("protocol");
String sCertificateFile = p.getProperty("serverCertificateFile");
String sCertificatePwd = p.getProperty("serverCertificatePwd");
String sMainPwd = p.getProperty("serverMainPwd");
String cCertificateFile = p.getProperty("clientCertificateFile");
String cCertificatePwd = p.getProperty("clientCertificatePwd");
String cMainPwd = p.getProperty("clientMainPwd"); //KeyStore class is used to save certificate.
char[] c_pwd = sCertificatePwd.toCharArray();
KeyStore keyStore = KeyStore.getInstance("JKS");
keyStore.load(new FileInputStream(sCertificateFile), c_pwd); //TrustManagerFactory class is used to create TrustManager class.
TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance("SunX509");
char[] m_pwd = sMainPwd.toCharArray();
trustManagerFactory.init(keyStore);
//TrustManager class is used to decide weather to trust the certificate
//or not.
TrustManager[] tms = trustManagerFactory.getTrustManagers(); KeyManager[] kms = null;
if(Configuration.getConfig().getProperty("authority").equals("2")){
//KeyStore class is used to save certificate.
c_pwd = cCertificatePwd.toCharArray();
keyStore = KeyStore.getInstance("JKS");
keyStore.load(new FileInputStream(cCertificateFile), c_pwd); //KeyManagerFactory class is used to create KeyManager class.
KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance("SunX509");
m_pwd = cMainPwd.toCharArray();
keyManagerFactory.init(keyStore, m_pwd);
//KeyManager class is used to choose a certificate
//to prove the identity of the client side.
kms = keyManagerFactory.getKeyManagers();
} //SSLContext class is used to set all the properties about secure communication.
//Such as protocol type and so on.
sslContext = SSLContext.getInstance(protocol);
sslContext.init(kms, tms, null); return sslContext;
}
}
客户端主程序：
package com.test.client; import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.util.Properties; import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory; import org.apache.log4j.Logger; import com.test.client.auth.Auth;
import com.test.server.config.Configuration;
import com.test.tools.SocketIO; public class Client {
static Logger logger = Logger.getLogger(Client.class);
private SSLContext sslContext;
private int port = 10000;
private String host = "127.0.0.1";
private SSLSocket socket;
private Properties p; public Client(){
try {
p = Configuration.getConfig();
Integer authority = Integer.valueOf(p.getProperty("authority")); sslContext = Auth.getSSLContext();
SSLSocketFactory factory = (SSLSocketFactory) sslContext.getSocketFactory();
socket = (SSLSocket)factory.createSocket();
String[] pwdsuits = socket.getSupportedCipherSuites();
socket.setEnabledCipherSuites(pwdsuits);//socket可以使用所有支持的加密套件
if(authority.intValue() == 2){
socket.setUseClientMode(false);
socket.setNeedClientAuth(true);
}else{
socket.setUseClientMode(true);
socket.setWantClientAuth(true);
} SocketAddress address = new InetSocketAddress(host, port);
socket.connect(address, 0);
} catch (Exception e) {
e.printStackTrace();
logger.error("socket establish failed!");
}
} public void request(){
try{
String encoding = p.getProperty("socketStreamEncoding"); DataOutputStream output = SocketIO.getDataOutput(socket);
String user = "name";
byte[] bytes = user.getBytes(encoding);
short length = (short)bytes.length;
short pwd = (short)123; output.writeShort(length);
output.write(bytes);
output.writeShort(pwd); DataInputStream input = SocketIO.getDataInput(socket);
length = input.readShort();
bytes = new byte[length];
input.read(bytes); logger.info("request result:"+new String(bytes,encoding));
}catch(Exception e){
e.printStackTrace();
logger.error("request error");
}finally{
try {
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
} public static void main(String[] args){
Client client = new Client();
client.request();
}
}
服务器端认证：
package com.test.server.auth; import java.io.FileInputStream;
import java.security.KeyStore;
import java.util.Properties; import javax.net.ssl.KeyManager;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory; import com.test.server.config.Configuration; public class Auth {
private static SSLContext sslContext; public static SSLContext getSSLContext() throws Exception{
Properties p = Configuration.getConfig();
String protocol = p.getProperty("protocol");
String sCertificateFile = p.getProperty("serverCertificateFile");
String sCertificatePwd = p.getProperty("serverCertificatePwd");
String sMainPwd = p.getProperty("serverMainPwd");
String cCertificateFile = p.getProperty("clientCertificateFile");
String cCertificatePwd = p.getProperty("clientCertificatePwd");
String cMainPwd = p.getProperty("clientMainPwd"); //KeyStore class is used to save certificate.
char[] c_pwd = sCertificatePwd.toCharArray();
KeyStore keyStore = KeyStore.getInstance("JKS");
keyStore.load(new FileInputStream(sCertificateFile), c_pwd); //KeyManagerFactory class is used to create KeyManager class.
KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance("SunX509");
char[] m_pwd = sMainPwd.toCharArray();
keyManagerFactory.init(keyStore, m_pwd);
//KeyManager class is used to choose a certificate
//to prove the identity of the server side.
KeyManager[] kms = keyManagerFactory.getKeyManagers(); TrustManager[] tms = null;
if(Configuration.getConfig().getProperty("authority").equals("2")){
//KeyStore class is used to save certificate.
c_pwd = cCertificatePwd.toCharArray();
keyStore = KeyStore.getInstance("JKS");
keyStore.load(new FileInputStream(cCertificateFile), c_pwd); //TrustManagerFactory class is used to create TrustManager class.
TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance("SunX509");
m_pwd = cMainPwd.toCharArray();
trustManagerFactory.init(keyStore);
//TrustManager class is used to decide weather to trust the certificate
//or not.
tms = trustManagerFactory.getTrustManagers();
} //SSLContext class is used to set all the properties about secure communication.
//Such as protocol type and so on.
sslContext = SSLContext.getInstance(protocol);
sslContext.init(kms, tms, null); return sslContext;
}
}
服务器端主程序：
package com.test.server; import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.Properties;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors; import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLServerSocket;
import javax.net.ssl.SSLServerSocketFactory;
import javax.net.ssl.SSLSocket; import org.apache.log4j.Logger; import com.test.server.auth.Auth;
import com.test.server.business.Job;
import com.test.server.config.Configuration; public class Server {
static Logger logger = Logger.getLogger(Server.class);
private SSLContext sslContext;
private SSLServerSocketFactory sslServerSocketFactory;
private SSLServerSocket sslServerSocket;
private final Executor executor; public Server() throws Exception{
Properties p = Configuration.getConfig();
Integer serverListenPort = Integer.valueOf(p.getProperty("serverListenPort"));
Integer serverThreadPoolSize = Integer.valueOf(p.getProperty("serverThreadPoolSize"));
Integer serverRequestQueueSize = Integer.valueOf(p.getProperty("serverRequestQueueSize"));
Integer authority = Integer.valueOf(p.getProperty("authority")); executor = Executors.newFixedThreadPool(serverThreadPoolSize); sslContext = Auth.getSSLContext();
sslServerSocketFactory = sslContext.getServerSocketFactory();
//Just create a TCP connection.SSL shake hand does not begin.
//The first time either side(server or client) try to get a socket input stream
//or output stream will case the SSL shake hand begin.
sslServerSocket = (SSLServerSocket) sslServerSocketFactory.createServerSocket();
String[] pwdsuits = sslServerSocket.getSupportedCipherSuites();
sslServerSocket.setEnabledCipherSuites(pwdsuits);
//Use client mode.Must prove its identity to the client side.
//Client mode is the default mode.
sslServerSocket.setUseClientMode(false);
if(authority.intValue() == 2){
//The communication will stop if the client side doesn't show its identity.
sslServerSocket.setNeedClientAuth(true);
}else{
//The communication will go on although the client side doesn't show its identity.
sslServerSocket.setWantClientAuth(true);
} sslServerSocket.setReuseAddress(true);
sslServerSocket.setReceiveBufferSize(128*1024);
sslServerSocket.setPerformancePreferences(3, 2, 1);
sslServerSocket.bind(new InetSocketAddress(serverListenPort),serverRequestQueueSize); logger.info("Server start up!");
logger.info("server port is:"+serverListenPort);
} private void service(){
while(true){
SSLSocket socket = null;
try{
logger.debug("Wait for client request!");
socket = (SSLSocket)sslServerSocket.accept();
logger.debug("Get client request!"); Runnable job = new Job(socket);
executor.execute(job);
}catch(Exception e){
logger.error("server run exception");
try {
socket.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
} public static void main(String[] args) {
Server server;
try{
server = new Server();
server.service();
}catch(Exception e){
e.printStackTrace();
logger.error("server socket establish error!");
}
}
}
服务器业务执行线程：
package com.test.server.business; import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.Socket;
import java.util.Properties; import org.apache.log4j.Logger; import com.test.server.config.Configuration;
import com.test.tools.SocketIO; public class Job implements Runnable {
static Logger logger = Logger.getLogger(Job.class);
private Socket socket; public Job(Socket socket){
this.socket = socket;
} public void run() {
Properties p = Configuration.getConfig();
String encoding = p.getProperty("socketStreamEncoding"); DataInputStream input = null;
DataOutputStream output = null;
try{
input = SocketIO.getDataInput(socket); short length = input.readShort();
byte[] bytes = new byte[length];
input.read(bytes);
String user = new String(bytes,encoding);
short pwd = input.readShort(); String result = null;
if(null != user && !user.equals("") && user.equals("name") && pwd == 123){
result = "login success";
}else{
result = "login failed";
}
logger.info("request user:"+user);
logger.info("request pwd:"+pwd); output = SocketIO.getDataOutput(socket); bytes = result.getBytes(encoding);
length = (short)bytes.length;
output.writeShort(length);
output.write(bytes); logger.info("response info:"+result);
}catch(Exception e){
e.printStackTrace();
logger.error("business thread run exception");
}finally{
try {
socket.close();
} catch (IOException e) {
e.printStackTrace();
logger.error("server socket close error");
}
}
}
}
配置文件类：
package com.test.server.config; import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.Properties; import org.apache.log4j.Logger; public class Configuration {
private static Properties config; static Logger logger = Logger.getLogger(Configuration.class); public static Properties getConfig(){
try{
if(null == config){
File configFile = new File("./conf/conf.properties");
if(configFile.exists() && configFile.isFile()
&& configFile.canRead()){
InputStream input = new FileInputStream(configFile);
config = new Properties();
config.load(input);
}
}
}catch(Exception e){
//default set
config = new Properties();
config.setProperty("protocol", "TLSV1");
config.setProperty("serverCertificateFile", "./certificate/server_rsa.key");
config.setProperty("serverCertificatePwd", "123456");
config.setProperty("serverMainPwd", "654321");
config.setProperty("clientCertificateFile", "./certificate/client_rsa.key");
config.setProperty("clientCertificatePwd", "123456");
config.setProperty("clientMainPwd", "654321");
config.setProperty("serverListenPort", "10000");
config.setProperty("serverThreadPoolSize", "5");
config.setProperty("serverRequestQueueSize", "10");
config.setProperty("socketStreamEncoding", "UTF-8");
}
return config;
}
}
接口工具类：
package com.test.tools; import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.Socket; public class SocketIO{
public static DataInputStream getDataInput(Socket socket) throws IOException{
DataInputStream input = new DataInputStream(socket.getInputStream());
return input;
} public static DataOutputStream getDataOutput(Socket socket) throws IOException{
DataOutputStream out = new DataOutputStream(socket.getOutputStream());
return out;
}
}
配置文件：
#1：单向认证，只有服务器端需证明其身份
#2：双向认证，服务器端和客户端都需证明其身份
authority=2
#通信协议
protocol=TLSV1
#服务器证书
serverCertificateFile=./certificate/server_rsa.key
#服务器证书密码
serverCertificatePwd=123456
#服务器证书主密码
serverMainPwd=654321
#客户端证书，如果为双向认证，则必须填写
clientCertificateFile=./certificate/client_rsa.key
#客户端证书密码
clientCertificatePwd=123456
#客户端证书主密码
clientMainPwd=654321
#服务器监听端口,注意root权限
serverListenPort=10000
#服务器线程池线程数(2*核数+1)
serverThreadPoolSize=5
#服务器Socket请求队列长度
serverRequestQueueSize=10
#字节流编码
socketStreamEncoding=GBK
日志文件：
log4j.rootLogger=debug,logOutput,fileLogOutput log console out put
log4j.appender.logOutput=org.apache.log4j.ConsoleAppender
log4j.appender.logOutput.layout=org.apache.log4j.PatternLayout
log4j.appender.logOutput.layout.ConversionPattern=%p%d{[yy-MM-dd HH:mm:ss]}[%c] -> %m%n #log file out put
log4j.appender.fileLogOutput=org.apache.log4j.RollingFileAppender
log4j.appender.fileLogOutput.File=./log/server.log
log4j.appender.fileLogOutput.MaxFileSize=1000KB
log4j.appender.fileLogOutput.MaxBackupIndex=3
log4j.appender.fileLogOutput.layout=org.apache.log4j.PatternLayout
log4j.appender.fileLogOutput.layout.ConversionPattern=%p%d{[yy-MM-dd HH:mm:ss]}[%c] -> %m%n
运行后的结果：
客户端：
INFO[13-10-08 09:33:39][com.test.client.Client] -> request result:login success
服务端：
INFO[13-10-08 09:33:34][com.test.server.Server] -> Server start up!
INFO[13-10-08 09:33:34][com.test.server.Server] -> server port is:10000
DEBUG[13-10-08 09:33:34][com.test.server.Server] -> Wait for client request!
DEBUG[13-10-08 09:33:39][com.test.server.Server] -> Get client request!
DEBUG[13-10-08 09:33:39][com.test.server.Server] -> Wait for client request!
INFO[13-10-08 09:33:39][com.test.server.business.Job] -> request user:name
INFO[13-10-08 09:33:39][com.test.server.business.Job] -> request pwd:123
INFO[13-10-08 09:33:39][com.test.server.business.Job] -> response info:login success
PS:
1，不能随意的使用close()方法关闭socket输入输出流，使用close()方法关闭socket输入输出流会导致socket本身被关闭
2，字符串必须按照指定的编码转换为字节数组，字节数组也必须通过相同的编码转换为字符串，否则将会出现乱码
String[] pwdsuits = socket.getSupportedCipherSuites();
socket.setEnabledCipherSuites(pwdsuits);
加密套件（ciphersuits）包括一组加密参数，这些参数指定了加密算法、密钥长度等加密等信息。
[SSL_RSA_WITH_RC4_128_MD5, SSL_RSA_WITH_RC4_128_SHA, TLS_RSA_WITH_AES_128_CBC_SHA, ...
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