BouncyCastle Unleashed!

Bouncy Castle is a collection of cryptographic APIs for both Java  & C#. 

Installing the Java Cryptography Extension (JCE) Unlimited Strength Policy Files:

Download the archive jce_policy-6.zip from JavaSE Downloads page.
Copy the files local_policy.jar and US_export_policy.jar from the archive to the folder %JAVA_HOME%\jre\lib\security, overwriting the files already present in the directory.

Generating KeyPair

KeyPair caKeyPair = null;
        try {
            KeyPairGenerator  keyGen = KeyPairGenerator.getInstance("RSA");
            keyGen.initialize(1024);
            caKeyPair = keyGen.generateKeyPair();
        } catch (NoSuchAlgorithmException ex) {
            
        }