1 /*
2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * 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 javax.crypto.spec;
27
28 import java.math.BigInteger;
29 import java.security.spec.AlgorithmParameterSpec;
30
31 /**
32 * This class specifies the set of parameters used with password-based
33 * encryption (PBE), as defined in the
34 * <a href="http://www.ietf.org/rfc/rfc2898.txt">PKCS #5</a>
35 * standard.
36 *
37 * @author Jan Luehe
38 *
39 * @since 1.4
40 */
41 public class PBEParameterSpec implements AlgorithmParameterSpec {
42
43 private byte[] salt;
44 private int iterationCount;
45
46 /**
47 * Constructs a parameter set for password-based encryption as defined in
48 * the PKCS #5 standard.
49 *
50 * @param salt the salt. The contents of <code>salt</code> are copied
51 * to protect against subsequent modification.
52 * @param iterationCount the iteration count.
53 * @exception NullPointerException if <code>salt</code> is null.
54 */
55 public PBEParameterSpec(byte[] salt, int iterationCount) {
56 this.salt = (byte[])salt.clone();
57 this.iterationCount = iterationCount;
58 }
59
60 /**
61 * Returns the salt.
62 *
63 * @return the salt. Returns a new array
64 * each time this method is called.
65 */
66 public byte[] getSalt() {
67 return (byte[])this.salt.clone();
68 }
69
70 /**
71 * Returns the iteration count.
72 *
73 * @return the iteration count
74 */
75 public int getIterationCount() {
76 return this.iterationCount;
77 }
78 }
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