Test.java

import java.math.BigInteger;

public class Test {
    public static void main(String[] args) {
        try {
            SRP_Client client = new SRP_Client();
            SRP_Server server = new SRP_Server();

            String password = "Password";
            // Generating User
            String username = "Alex";
            BigInteger salt = server.genSalt();
            BigInteger verifier = server.genVerifier(salt, password);

            // Server will contain {username, salt, verifier} and compute public private
            // value
            server.setUser(username, salt, verifier);
            server.computePublicPrivatePair();

            // Client will enter {username, passwoord} and compute public private value
            client.setUser(username, password);
            client.computePublicPrivatePair();

            // Client will send username and public value to server
            server.setClientPublic(client.A);

            // Server in response will send salt and it's public value
            client.setSalt(server.salt);
            client.setServerPublic(server.B);

            // Both will now compute their sessionKey.
            server.computeSessionKey();
            client.computeSessionKey();

            // Both client and server will compute key verifier
            client.computeSessionKeyVerifier();
            server.computeSessionKeyVerifier();

            // Client will send his key verifier to Server
            boolean server_response = server.verifySessionKey(client.M);
            if (server_response) {
                // Server will send his key verifer to Client
                boolean client_response = client.verifySessionKey(server.M);
                if (client_response) {
                    System.out.println("Client and Server are mutually authenticated.");
                } else {
                    System.out
                            .println("Client found Server's proof to be incorrect. Client will reject authentication.");
                }
            } else {
                System.out.println(" Server found Client's proof to be incorrect. Server will reject authentication.");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}