| /* |
| * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| import java.security.*; |
| |
| class DigestBase extends MessageDigestSpi { |
| |
| private MessageDigest digest = null; |
| |
| public DigestBase(String alg, String provider) throws Exception { |
| digest = MessageDigest.getInstance(alg, provider); |
| } |
| |
| @Override |
| protected void engineUpdate(byte input) { |
| digest.update(input); |
| } |
| |
| @Override |
| protected void engineUpdate(byte[] input, int offset, int len) { |
| digest.update(input, offset, len); |
| } |
| |
| @Override |
| protected byte[] engineDigest() { |
| return digest.digest(); |
| } |
| |
| @Override |
| protected void engineReset() { |
| digest.reset(); |
| } |
| |
| public static final class MD5 extends DigestBase { |
| public MD5() throws Exception { |
| super("MD5", "SUN"); |
| } |
| } |
| |
| public static final class SHA extends DigestBase { |
| public SHA() throws Exception { |
| super("SHA", "SUN"); |
| } |
| } |
| |
| public static final class SHA256 extends DigestBase { |
| public SHA256() throws Exception { |
| super("SHA-256", "SUN"); |
| } |
| } |
| } |