package y2016.d05;

import org.apache.commons.codec.binary.Hex;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

public class Part1 {

private static String input = "ffykfhsq";

private static int zerolength = 5;

private static MessageDigest md5;

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

md5 = MessageDigest.getInstance("MD5");

String hash = "1234567980";

int count = 0;

StringBuilder password = new StringBuilder();

while (password.length() < 8) {

while (!"00000".equals(hash.substring(0, zerolength))) {

++count;

hash = getMd5Hex(input + count);

}

password.append(hash.substring(zerolength, zerolength+1));

System.out.println(password);

hash = "3472628347623847624";

}

System.out.println(password);

}

private static String getMd5Hex(String input) {

byte[] hashInBytes = md5.digest(input.getBytes());

return Hex.encodeHexString(hashInBytes);

}

}