MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.security.SecureRandom;
import sun.misc.*;

public class MainClass {

    public static void main(String[] args) throws Exception {

        SecureRandom random = new SecureRandom();
        byte[] keyBytes = new byte[20];
        random.nextBytes(keyBytes);
        SecretKeySpec key = new SecretKeySpec(keyBytes, "HMACSHA1");

        System.out.println("Key:" + new BASE64Encoder().encode(key.getEncoded()));

        Mac mac = Mac.getInstance("HmacSHA1");
        mac.init(key);

        mac.update("test".getBytes("UTF8"));
        byte[] result = mac.doFinal();

        System.out.println("MAC: " + new BASE64Encoder().encode(result));
    }
}