1 /*
2 * Copyright 2007-2008 Volker Fritzsch
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package motej;
17
18 /**
19 *
20 * <p>
21 * @author <a href="mailto:vfritzsch@users.sourceforge.net">Volker Fritzsch</a>
22 */
23 public abstract class AbstractExtension implements Extension {
24
25 protected void decrypt(byte[] data) {
26 for (int i = 0; i < data.length; i++) {
27 data[i] = (byte) (((byte) data[i] ^ (byte) 0x17) + (byte) 0x17);
28 }
29 }
30
31 }