Showing posts with label javax.net.ssl. Show all posts
Showing posts with label javax.net.ssl. Show all posts

Wednesday, 22 January 2014

Implementing 2-way SSL in Java using TLS and Self Signed Certificates part3

Step 3: The Client (Get the complete code here)

The client also requires the Keystore/Trustore created in Part-1

Again in the client we have to do a couple of things similar to the server:

The first is to specify the Java Keystore/Trustore we created in  Part-1 of this article:

System.setProperty("javax.net.ssl.keyStore","mysystem.jks");
System.setProperty("javax.net.ssl.keyStorePassword","welcome");

System.setProperty("javax.net.ssl.trustStore","mysystem.jks");
System.setProperty("javax.net.ssl.trustStorePassword","welcome");

Similarly with the server side described in Part-2, we have to create the client socket as an SSLSocket:

SSLSocketFactory factory = (SSLSocketFactory) SSLSocketFactory.getDefault();    
SSLSocket sslSock = (SSLSocket) factory.createSocket("localhost",8095);

The entire code of the client can be downloaded here.

Next article, Part-4, of this Blog series will assist you to debug the SSL/TLS client/server communication.

Implementing 2-way SSL in Java using TLS and Self Signed Certificates part2

Step 2: The server (Get the complete server code here)

Requires the Trustore/Keystore created in Step-1.

To write the server process in Java is pretty simple. You just have to do a couple of steps:
Specify a couple of properties so that the Trustore/Keystore can be loaded like the following code fragment shows:

System.setProperty("javax.net.ssl.keyStore","mysystem.jks");
System.setProperty("javax.net.ssl.keyStorePassword","welcome");

System.setProperty("javax.net.ssl.trustStore","mysystem.jks");
System.setProperty("javax.net.ssl.trustStorePassword","welcome");

Create the ServerSocket as anSSLServerSocketlike the following code fragment shows:
 
char ksPass[] = "welcome".toCharArray();
char ctPass[] = "welcome".toCharArray();

//Create and load the Keystore
KeyStore ks = KeyStore.getInstance("JKS");
ks.load(new FileInputStream("ianalyzer.jks"), ksPass);
KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
kmf.init(ks, ctPass);

//Create the ServerSocket as an SSLServerSocket
SSLContext secureSocket = SSLContext.getInstance("TLS");
secureSocket.init(kmf.getKeyManagers(), null, null);
SSLServerSocketFactory ssf = secureSocket.getServerSocketFactory();
ssocket = (SSLServerSocket) ssf.createServerSocket(8095);
SSLServerSocket ss = (SSLServerSocket) ssocket;

//This explicitly states TLS with 2-way authentication
ss.setNeedClientAuth(true); 

The entire code for server implementation can be downloaded here.