package homework.pkg4;

import java.security.MessageDigest;
import java.util.Scanner;
import javax.xml.bind.DatatypeConverter;

public class Password {
	public static void main( String[] args ) throws Exception {
		Scanner keyboard = new Scanner(System.in);
		String un, pw, encrypt_psswrd;

		MessageDigest digest = MessageDigest.getInstance("SHA-256");
                
                System.out.print("Please create a username: ");
		un = keyboard.nextLine();

		System.out.print("Please create a password: ");
		pw = keyboard.nextLine();

		digest.update( pw.getBytes("UTF-8") );
		encrypt_psswrd = DatatypeConverter.printHexBinary( digest.digest() );
		
		//overwrites user's original input so it is not visible to hackers. 
		pw = "empty";

		System.out.println( "Your username is: " + un + ". Your password has been encryped for security purposes: " + encrypt_psswrd );
	}
}