com.github.bloodshura.x.cryptography.impl.hash.Md4 Maven / Gradle / Ivy

Go to download
/*
 * Copyright (c) 2013-2018, João Vitor Verona Biazibetti - All Rights Reserved
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see .
 *
 * https://www.github.com/BloodShura
 */

package com.github.bloodshura.x.cryptography.impl.hash;

import com.github.bloodshura.x.cryptography.AbstractDigest;
import com.github.bloodshura.x.cryptography.exception.CryptoException;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.Provider;

public class Md4 extends AbstractDigest {
	private static MessageDigest INSTANCE;

	public Md4() throws CryptoException {
		super(getInstance());
	}

	private static MessageDigest getInstance() throws CryptoException {
		if (INSTANCE != null) {
			return INSTANCE;
		}

		try {
			return INSTANCE = MessageDigest.getInstance("MD4", new MD4Provider());
		}
		catch (NoSuchAlgorithmException exception) {
			throw new CryptoException(exception);
		}
	}

	private static class MD4Provider extends Provider {
		public MD4Provider() {
			super("MD4Provider", 1.0D, "MD4 MessageDigest");
			put("MessageDigest.MD4", "sun.security.provider.MD4");
		}
	}
}