/* Ara - capture species and specimen data
 *
 * Copyright (C) 2009  INBio ( Instituto Nacional de Biodiversidad )
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.inbio.ara.util;

import java.io.Serializable;
import java.security.*;

/**
 *
 * @author roaguilar
 */
public class MD5Encrypter implements Serializable{

    public MD5Encrypter() {
    }

    public String Encrypt(String data) {
        String md5val = "";
        MessageDigest algorythm = null;
        byte[] defaultBytes;
        byte[] messageDigest;
        StringBuffer hexString = new StringBuffer();

        //Get the MD5 digester
        try {
            algorythm = MessageDigest.getInstance("MD5");
        } catch (NoSuchAlgorithmException e ){
            return null;
        }

        //Digest the given string
        defaultBytes = data.getBytes();
        algorythm.reset();
        algorythm.update(defaultBytes);
        messageDigest = algorythm.digest();
        for (int i =0; i< messageDigest.length; i++) {
            String hex = Integer.toHexString(0xFF & messageDigest[i]);
            if (hex.length() == 1) {
                hexString.append('0');
            }
            hexString.append(hex);
        }
        md5val = hexString.toString();
        return md5val;
    }

    public boolean equalToEncryptedValue(String data, String encrypted) {
        boolean equal = false;
        String md5val = this.Encrypt(data);
        if (md5val.equals(encrypted)) equal = true;
        return equal;
    }
}