jshm.util.Crypto.java Source code

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Here is the source code for jshm.util.Crypto.java

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/*
 * -----LICENSE START-----
 * JSHManager - A Java-based tool for managing one's ScoreHero account.
 * Copyright (C) 2008 Tim Mullin
 * 
 * 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 2 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, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 * -----LICENSE END-----
 */
package jshm.util;

import java.util.Scanner;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.apache.commons.codec.binary.Base64;

/**
 * By "encryption" I actually mean Base64 encoding... 
 * javax.crypto.* wasn't working on Linux.
 * @author Tim Mullin
 *
 */
public class Crypto {
    static final Logger LOG = Logger.getLogger(Crypto.class.getName());

    public static String encrypt(String clearText) {
        LOG.finest("entered Crypto.encrypt()");

        LOG.finer("Base64 encoding clearText");
        clearText = new String(Base64.encodeBase64(clearText.getBytes()));

        LOG.finest("exiting Crypto.encrypt()");
        return clearText;
    }

    public static String decrypt(String cipherText) {
        LOG.finest("entered Crypto.decrypt()");

        LOG.finer("Base64 decoding cipherText");

        try {
            cipherText = new String(Base64.decodeBase64(cipherText.getBytes()));
        } catch (ArrayIndexOutOfBoundsException e) {
            // this is only necessary to deal with passwords that were
            // previously encoded via the old javax.crypto.* method

            LOG.info("Clearing password to handle new storage mechanism");
            LOG.log(Level.FINER, "Exception from old password", e);
            cipherText = "";
        }

        LOG.finest("exiting Crypto.decrypt()");
        return cipherText;
    }

    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        String in = s.nextLine();

        System.out.println(args.length > 0 && args[0].toLowerCase().startsWith("d") ? decrypt(in) : encrypt(in));
    }
}