import java.io.*;
import java.security.*;

class genDSAKeys {
    public static void main(String[] args) {

		try {
			KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA", "SUN");
			SecureRandom random = SecureRandom.getInstance("SHA1PRNG", "SUN");
			keyGen.initialize(1024, random);
			KeyPair pair = keyGen.generateKeyPair();
			PrivateKey priv = pair.getPrivate();
			PublicKey pub = pair.getPublic();		
		
	        // SAVE PUBLIC/PRIVATE KEYS
	        byte[] encodedKeySpec = priv.getEncoded();
	        FileOutputStream eksos = new FileOutputStream("private_DSA.key");
	        eksos.write( encodedKeySpec );
	        eksos.close();
			
	        byte[] encodedKeySpec1 = pub.getEncoded();
	        FileOutputStream eksos1 = new FileOutputStream("public_DSA.key");
	        eksos1.write( encodedKeySpec1 );
	        eksos1.close();
		}
		catch (Exception e) {
			System.out.println(e.toString());
		}

	}
}