01: /*
02: * @(#)RSAKeyGenParameterSpec.java 1.11 06/10/10
03: *
04: * Copyright 1990-2006 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:
28: package java.security.spec;
29:
30: import java.math.BigInteger;
31: import java.security.spec.AlgorithmParameterSpec;
32:
33: /**
34: * This class specifies the set of parameters used to generate an RSA
35: * key pair.
36: *
37: * @author Jan Luehe
38: * @version 1.5 02/02/00
39: *
40: * @see java.security.KeyPairGenerator#initialize(java.security.spec.AlgorithmParameterSpec)
41: *
42: * @since 1.3
43: */
44:
45: public class RSAKeyGenParameterSpec implements AlgorithmParameterSpec {
46:
47: private int keysize;
48: private BigInteger publicExponent;
49:
50: /**
51: * The public-exponent value F0 = 3.
52: */
53: public static final BigInteger F0 = BigInteger.valueOf(3);
54:
55: /**
56: * The public exponent-value F4 = 65537.
57: */
58: public static final BigInteger F4 = BigInteger.valueOf(65537);
59:
60: /**
61: * Constructs a new <code>RSAParameterSpec</code> object from the
62: * given keysize and public-exponent value.
63: *
64: * @param keysize the modulus size (specified in number of bits)
65: * @param publicExponent the public exponent
66: */
67: public RSAKeyGenParameterSpec(int keysize, BigInteger publicExponent) {
68: this .keysize = keysize;
69: this .publicExponent = publicExponent;
70: }
71:
72: /**
73: * Returns the keysize.
74: *
75: * @return the keysize.
76: */
77: public int getKeysize() {
78: return keysize;
79: }
80:
81: /**
82: * Returns the public-exponent value.
83: *
84: * @return the public-exponent value.
85: */
86: public BigInteger getPublicExponent() {
87: return publicExponent;
88: }
89: }
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