KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DH");
				BigInteger p512 = new BigInteger(p, 16);
				BigInteger g512 = new BigInteger(g, 16);

				DHParameterSpec dhSpec = new DHParameterSpec(p512, g512);

				keyGen.initialize(dhSpec, new SecureRandom());

				KeyAgreement serverKeyAgree = KeyAgreement.getInstance("DH");
				KeyAgreement clientKeyAgree = KeyAgreement.getInstance("DH");

				keyGen = KeyPairGenerator.getInstance("DH"); // new instance, just incase.

				KeyPair serverKeyPair = keyGen.generateKeyPair();
				KeyPair clientKeyPair = keyGen.generateKeyPair();

				KeyFactory k = KeyFactory.getInstance("DH");
				serverKeyAgree.init(serverKeyPair.getPrivate());
				clientKeyAgree.init(clientKeyPair.getPrivate());