Java tutorial
/* * HashSlotManager.java * This file is part of Freemail, copyright (C) 2006 Dave Baker * * 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. */ package freemail; import org.archive.util.Base32; import org.bouncycastle.crypto.digests.SHA256Digest; public class HashSlotManager extends SlotManager { HashSlotManager(SlotSaveCallback cb, Object userdata, String slotlist) { super(cb, userdata, slotlist); } @Override protected String incSlot(String slot) { byte[] buf = Base32.decode(slot); SHA256Digest sha256 = new SHA256Digest(); sha256.update(buf, 0, buf.length); sha256.doFinal(buf, 0); return Base32.encode(buf); } }