01: /*
02: *
03: *
04: * Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
05: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License version
09: * 2 only, as published by the Free Software Foundation.
10: *
11: * This program is distributed in the hope that it will be useful, but
12: * WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * General Public License version 2 for more details (a copy is
15: * included at /legal/license.txt).
16: *
17: * You should have received a copy of the GNU General Public License
18: * version 2 along with this work; if not, write to the Free Software
19: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA
21: *
22: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
23: * Clara, CA 95054 or visit www.sun.com if you need additional
24: * information or have any questions.
25: */
26:
27: package com.sun.midp.crypto;
28:
29: /**
30: * DES EDE (Triple DES)cipher implementation.
31: */
32: public class DESEDE extends DES {
33: /**
34: * Called by the factory method to set the mode and padding parameters.
35: * Need because Class.newInstance does not take args.
36: *
37: * @param mode the mode parsed from the transformation parameter of
38: * getInstance
39: * @param padding the paddinge parsed from the transformation parameter of
40: * getInstance
41: *
42: * @exception NoSuchPaddingException if <code>transformation</code>
43: * contains a padding scheme that is not available.
44: */
45: protected void setChainingModeAndPadding(String mode, String padding)
46: throws NoSuchPaddingException {
47: if (mode.equals("ECB") || mode.equals("")) {
48: cipher = new DES_ECB(true);
49: } else if (mode.equals("CBC")) {
50: cipher = new DES_CBC(true);
51: } else {
52: throw new IllegalArgumentException();
53: }
54:
55: cipher.setChainingModeAndPadding(mode, padding);
56: }
57: }
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