Neohope的网络笔记

1、使用环境变量，最基本的SSLSocket Server

package com.ats.ssl.socket;

import javax.net.ssl.SSLPeerUnverifiedException;
import javax.net.ssl.SSLServerSocket;
import javax.net.ssl.SSLServerSocketFactory;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;

public class Server {

	static String delimiter = "=========================================================";

	public static void startListen(String keyStorePath, String keyStorePwd, int port) throws IOException {
		System.setProperty("javax.net.ssl.keyStore", keyStorePath);
		System.setProperty("javax.net.ssl.keyStorePassword", keyStorePwd);

		SSLServerSocketFactory sslserversocketfactory = (SSLServerSocketFactory) SSLServerSocketFactory.getDefault();
		SSLServerSocket sslserversocket = (SSLServerSocket) sslserversocketfactory.createServerSocket(port);

		while (true) {
			SSLSocket sslsocket = (SSLSocket) sslserversocket.accept();

			String protocols[] = { "TLSv1" };
			// String protocols[] = {"SSLv2Hello","TLSv1","SSLv3"};
			// String protocols[] = {"SSLv3"};
			sslsocket.setEnabledProtocols(protocols);

			DisplaySecurityLevel(sslsocket);
			DisplayCertificateInformation(sslsocket);

			try {
				InputStream inputstream = sslsocket.getInputStream();
				InputStreamReader inputstreamreader = new InputStreamReader(inputstream);
				BufferedReader bufferedreader = new BufferedReader(inputstreamreader);

				System.out.println(delimiter);
				String string = null;
				while ((string = bufferedreader.readLine()) != null) {
					System.out.println(string);
					System.out.flush();
				}
				System.out.println(delimiter);
			} catch (Exception ex) {
				ex.printStackTrace();
			} finally {
				sslsocket.close();
			}
		}
	}

	static void DisplaySecurityLevel(SSLSocket sslsocket) {
		System.out.println(delimiter);
		SSLSession session = sslsocket.getSession();
		System.out.println("通讯协议: " + session.getProtocol());
		System.out.println("加密方式: "+session.getCipherSuite());
		System.out.println(delimiter);
	}

	static void DisplayCertificateInformation(SSLSocket sslsocket) {
		System.out.println(delimiter);
		Certificate[] localCertificates = sslsocket.getSession().getLocalCertificates();
		if (localCertificates == null || localCertificates.length == 0) {
			System.out.println("本地证书为空");
		} else {
			Certificate cert = localCertificates[0];
			System.out.println("本地证书类型: " + cert.getType());
			if (cert.getType().equals("X.509")) {
				X509Certificate x509 = (X509Certificate) cert;
				System.out.println("本地证书签发者: " + x509.getIssuerDN());
				System.out.println("本地证书有效期: " + x509.getNotBefore() + "至" + x509.getNotAfter());
			}
		}

		try {
			Certificate[] peerCertificates = sslsocket.getSession().getPeerCertificates();

			if (peerCertificates == null || peerCertificates.length == 0) {
				System.out.println("远程证书为空");
			} else {
				Certificate cert = peerCertificates[0];
				System.out.println("远程证书类型: " + cert.getType());
				if (cert.getType().equals("X.509")) {
					X509Certificate x509 = (X509Certificate) cert;
					System.out.println("远程证书签发者: " + x509.getIssuerDN());
					System.out.println("远程证书有效期: " + x509.getNotBefore() + "至" + x509.getNotAfter());
				}
			}
		} catch (SSLPeerUnverifiedException e) {
			// e.printStackTrace();
			System.out.println("远程证书为空");
		}

		System.out.println(delimiter);
	}

	public static void main(String[] arstring) {
		try {
			URL url = Server.class.getClassLoader().getResource("myKeyStore.jks");
			String jks = url.getFile();
			startListen(jks, "sslTestPwd", 9999);

		} catch (Exception exception) {
			exception.printStackTrace();
		}
	}
}

2、相应的，使用环境变量进行设置的，SSLSocket Client

package com.ats.ssl.socket;

import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import java.io.*;
import java.net.URL;

public class Client {
	public static void connectAndSend(String trustStorePath,
			String trustStorePwd, String ip, int port, String msg)
			throws IOException {
		System.setProperty("javax.net.ssl.trustStore", trustStorePath);
		System.setProperty("javax.net.ssl.trustStorePassword", trustStorePwd);

		SSLSocketFactory sslsocketfactory = (SSLSocketFactory) SSLSocketFactory
				.getDefault();
		SSLSocket sslsocket = (SSLSocket) sslsocketfactory.createSocket(
				"localhost", 9999);

		//String protocols[] = {"TLSv1"};
		String protocols[] = {"SSLv2Hello","TLSv1","SSLv3"};
		//String protocols[] = {"SSLv3"};
		sslsocket.setEnabledProtocols(protocols);

		try {
			OutputStream outputstream = sslsocket.getOutputStream();
			OutputStreamWriter outputstreamwriter = new OutputStreamWriter(
					outputstream);
			BufferedWriter bufferedwriter = new BufferedWriter(
					outputstreamwriter);

			bufferedwriter.write(msg);
			bufferedwriter.flush();
		} catch (Exception ex) {
			ex.printStackTrace();
		} finally {
			sslsocket.close();
		}
	}

	public static void main(String[] arstring) {
		try {
			URL url = Server.class.getClassLoader().getResource(
					"myTrustStore.jks");
			String jks = url.getFile();

			connectAndSend(jks, "sslTestPwd", "127.0.0.1", 9999,
					"This msg is from Java SSL Client :)");

		} catch (Exception exception) {
			exception.printStackTrace();
		}
	}
}