01: /*
02: * Copyright 2004-2005 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun in the LICENSE file that accompanied this code.
10: *
11: * This code is distributed in the hope that it will be useful, but WITHOUT
12: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14: * version 2 for more details (a copy is included in the LICENSE file that
15: * accompanied this code).
16: *
17: * You should have received a copy of the GNU General Public License version
18: * 2 along with this work; if not, write to the Free Software Foundation,
19: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20: *
21: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: package sun.security.krb5.internal.crypto;
27:
28: import sun.security.krb5.internal.crypto.dk.AesDkCrypto;
29: import sun.security.krb5.KrbCryptoException;
30: import java.security.GeneralSecurityException;
31:
32: /**
33: * Class with static methods for doing AES operations.
34: *
35: * @author Seema Malkani
36: * @version 1.8, 05/05/07
37: */
38:
39: public class Aes128 {
40: private static final AesDkCrypto CRYPTO = new AesDkCrypto(128);
41:
42: private Aes128() {
43: }
44:
45: public static byte[] stringToKey(char[] password, String salt,
46: byte[] params) throws GeneralSecurityException {
47: return CRYPTO.stringToKey(password, salt, params);
48: }
49:
50: // in bytes
51: public static int getChecksumLength() {
52: return CRYPTO.getChecksumLength();
53: }
54:
55: public static byte[] calculateChecksum(byte[] baseKey, int usage,
56: byte[] input, int start, int len)
57: throws GeneralSecurityException {
58: return CRYPTO.calculateChecksum(baseKey, usage, input, start,
59: len);
60: }
61:
62: public static byte[] encrypt(byte[] baseKey, int usage,
63: byte[] ivec, byte[] plaintext, int start, int len)
64: throws GeneralSecurityException, KrbCryptoException {
65: return CRYPTO.encrypt(baseKey, usage, ivec,
66: null /* new_ivec */, plaintext, start, len);
67: }
68:
69: /* Encrypt plaintext; do not add confounder, or checksum */
70: public static byte[] encryptRaw(byte[] baseKey, int usage,
71: byte[] ivec, byte[] plaintext, int start, int len)
72: throws GeneralSecurityException, KrbCryptoException {
73: return CRYPTO.encryptRaw(baseKey, usage, ivec, plaintext,
74: start, len);
75: }
76:
77: public static byte[] decrypt(byte[] baseKey, int usage,
78: byte[] ivec, byte[] ciphertext, int start, int len)
79: throws GeneralSecurityException {
80: return CRYPTO.decrypt(baseKey, usage, ivec, ciphertext, start,
81: len);
82: }
83:
84: /* Decrypt ciphertext; do not remove confounder, or check checksum */
85: public static byte[] decryptRaw(byte[] baseKey, int usage,
86: byte[] ivec, byte[] ciphertext, int start, int len)
87: throws GeneralSecurityException {
88: return CRYPTO.decryptRaw(baseKey, usage, ivec, ciphertext,
89: start, len);
90: }
91: };
|