MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.Security;

public class MainClass {
    public KeyPair generateKeyPair(long seed) throws Exception {
        Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
        KeyPairGenerator keyGenerator = KeyPairGenerator.getInstance("DSA");
        SecureRandom rng = SecureRandom.getInstance("SHA1PRNG", "SUN");
        rng.setSeed(seed);
        keyGenerator.initialize(1024, rng);

        return (keyGenerator.generateKeyPair());
    }

    public static void main(String args[]) throws Exception {
        MainClass kpge = new MainClass();
        KeyPair kp = kpge.generateKeyPair(999);
        System.out.println("-- Public Key ----");
        PublicKey pubKey = kp.getPublic();
        System.out.println("   Algorithm=" + pubKey.getAlgorithm());
        System.out.println("   Encoded=" + pubKey.getEncoded());
        System.out.println("   Format=" + pubKey.getFormat());
    }
}