001/**
002 * Copyright (C) 2014  Universidade de Aveiro, DETI/IEETA, Bioinformatics Group - http://bioinformatics.ua.pt/
003 *
004 * This file is part of Dicoogle/dicoogle.
005 *
006 * Dicoogle/dicoogle is free software: you can redistribute it and/or modify
007 * it under the terms of the GNU General Public License as published by
008 * the Free Software Foundation, either version 3 of the License, or
009 * (at your option) any later version.
010 *
011 * Dicoogle/dicoogle is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
014 * GNU General Public License for more details.
015 *
016 * You should have received a copy of the GNU General Public License
017 * along with Dicoogle.  If not, see <http://www.gnu.org/licenses/>.
018 */
019package pt.ua.dicoogle.server.users;
020
021import java.io.UnsupportedEncodingException;
022import java.nio.charset.Charset;
023import java.security.MessageDigest;
024import java.security.NoSuchAlgorithmException;
025
026import org.apache.commons.codec.binary.Base64;
027import org.slf4j.LoggerFactory;
028
029/**
030 * This class provides hashing service to passwords with SHA-1 algoritm
031 *
032 * @author Samuel Campos <samuelcampos@ua.pt>
033 */
034public class HashService {
035    /**
036     * Encrypt one password with SHA-1 algorithm
037     *
038     * @param plaintext
039     * @return the hash of the password
040     */
041    public static String getSHA1Hash(String plaintext) {
042        try {
043            MessageDigest md = MessageDigest.getInstance("SHA-1");
044            md.update(plaintext.getBytes("UTF-8"));
045            byte[] raw = md.digest();
046            byte[] asbase64 = Base64.encodeBase64(raw);
047            String hash = new String(asbase64, Charset.forName("UTF-8"));
048            return hash;
049
050        } catch (UnsupportedEncodingException|NoSuchAlgorithmException ex) {
051            LoggerFactory.getLogger(HashService.class).error("Failed to encode text", ex);
052        }
053
054        return null;
055    }
056
057}