io.hops.hopsworks.common.dao.user.security.ua.SecurityUtils.java Source code

Introduction

Here is the source code for io.hops.hopsworks.common.dao.user.security.ua.SecurityUtils.java

Source

/*
 * Changes to this file committed after and not including commit-id: ccc0d2c5f9a5ac661e60e6eaf138de7889928b8b
 * are released under the following license:
 *
 * This file is part of Hopsworks
 * Copyright (C) 2018, Logical Clocks AB. All rights reserved
 *
 * Hopsworks 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.
 *
 * Hopsworks 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.gnu.org/licenses/>.
 *
 * Changes to this file committed before and including commit-id: ccc0d2c5f9a5ac661e60e6eaf138de7889928b8b
 * are released under the following license:
 *
 * Copyright (C) 2013 - 2018, Logical Clocks AB and RISE SICS AB. All rights reserved
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this
 * software and associated documentation files (the "Software"), to deal in the Software
 * without restriction, including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, sublicense, and/or sell copies of the Software, and to permit
 * persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or
 * substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package io.hops.hopsworks.common.dao.user.security.ua;

import java.security.NoSuchAlgorithmException;
import org.apache.commons.codec.binary.Base32;
import java.security.SecureRandom;
import java.util.UUID;

public class SecurityUtils {

    /**
     * Generate the secrete key for mobile devices.
     *
     * @return
     */
    public static String calculateSecretKey() throws NoSuchAlgorithmException {
        byte[] secretKey = new byte[10];
        SecureRandom sha1Prng = SecureRandom.getInstance("SHA1PRNG");
        sha1Prng.nextBytes(secretKey);
        Base32 codec = new Base32();
        byte[] encodedKey = codec.encode(secretKey);
        return new String(encodedKey);
    }

    /**
     * Generate a random password to be sent to the user
     *
     * @param length
     * @return
     */
    public static String getRandomPassword(int length) {

        String randomStr = UUID.randomUUID().toString();
        while (randomStr.length() < length) {
            randomStr += UUID.randomUUID().toString();
        }
        return randomStr.substring(0, length);
    }
}