io.jsync.utils.CryptoUtils Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jsync.io Show documentation

jsync.io is a non-blocking, event-driven networking framework for Java

There is a newer version: 1.10.13

/*
 * Copyright (c) 2011-2013 The original author or authors
 * ------------------------------------------------------
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Apache License v2.0 which accompanies this distribution.
 *
 *     The Eclipse Public License is available at
 *     http://www.eclipse.org/legal/epl-v10.html
 *
 *     The Apache License v2.0 is available at
 *     http://www.opensource.org/licenses/apache2.0.php
 *
 * You may elect to redistribute this code under either of these licenses.
 */
package io.jsync.utils;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.util.Formatter;

public class CryptoUtils {

    private CryptoUtils() {
    }

    private static String toHexString(byte[] bytes) {
        Formatter formatter = new Formatter();
        for (byte b : bytes) {
            formatter.format("%02x", b);
        }
        return formatter.toString();
    }

    public static String calculateHmacSHA1(String data, String key) {
        SecretKeySpec signingKey = new SecretKeySpec(key.getBytes(), "HmacSHA1");
        Mac mac = null;
        try {
            mac = Mac.getInstance("HmacSHA1");
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        try {
            mac.init(signingKey);
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        }

        return toHexString(mac.doFinal(data.getBytes()));
    }

}