Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.security.*;

import java.util.Arrays;

public class Main {
    public static byte[] getMsgKeyHash(byte[] data) {
        byte[] msgKey = Arrays.copyOfRange(getSHA1hash(data), 4, 20);
        return msgKey;
    }

    public static byte[] getSHA1hash(byte[] dataByte) {
        MessageDigest md = null;
        byte[] sha1hash = new byte[20];
        try {
            md = MessageDigest.getInstance("SHA-1");
            md.update(dataByte, 0, dataByte.length);
            sha1hash = md.digest();
            return sha1hash;
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
        }
        return null;
    }
}