package fr.xephi.authme.security.crypts;

import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import fr.xephi.authme.AuthMe;

public class SALTEDSHA512 implements EncryptionMethod {

	private static String getSHA512(String message) throws NoSuchAlgorithmException {
		MessageDigest sha512 = MessageDigest.getInstance("SHA-512");
		sha512.reset();
		sha512.update(message.getBytes());
		byte[] digest = sha512.digest();
		return String.format("%0" + (digest.length << 1) + "x", new BigInteger(1, digest));
	}

	@Override
	public boolean comparePassword(String hash, String password, String playerName) throws NoSuchAlgorithmException {
		String salt = AuthMe.getInstance().database.getAuth(playerName).getSalt();
		return hash.equals(getHash(password, salt, ""));
	}

	@Override
	public String getHash(String password, String salt, String name) throws NoSuchAlgorithmException {
		return getSHA512(password + salt);
	}
}