1 /*
2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
26 package java.security.spec;
27
28 import java.math.BigInteger;
29 import java.security.spec.AlgorithmParameterSpec;
30
31 /**
32 * This class specifies the set of parameters used to generate an RSA
33 * key pair.
34 *
35 * @author Jan Luehe
36 *
37 * @see java.security.KeyPairGenerator#initialize(java.security.spec.AlgorithmParameterSpec)
38 *
39 * @since 1.3
40 */
41
42 public class RSAKeyGenParameterSpec implements AlgorithmParameterSpec {
43
44 private int keysize;
45 private BigInteger publicExponent;
46
47 /**
48 * The public-exponent value F0 = 3.
49 */
50 public static final BigInteger F0 = BigInteger.valueOf(3);
51
52 /**
53 * The public exponent-value F4 = 65537.
54 */
55 public static final BigInteger F4 = BigInteger.valueOf(65537);
56
57 /**
58 * Constructs a new {@code RSAParameterSpec} object from the
59 * given keysize and public-exponent value.
60 *
61 * @param keysize the modulus size (specified in number of bits)
62 * @param publicExponent the public exponent
63 */
64 public RSAKeyGenParameterSpec(int keysize, BigInteger publicExponent) {
65 this.keysize = keysize;
66 this.publicExponent = publicExponent;
67 }
68
69 /**
70 * Returns the keysize.
71 *
72 * @return the keysize.
73 */
74 public int getKeysize() {
75 return keysize;
76 }
77
78 /**
79 * Returns the public-exponent value.
80 *
81 * @return the public-exponent value.
82 */
83 public BigInteger getPublicExponent() {
84 return publicExponent;
85 }
86 }
|
1 /*
2 * Copyright (c) 1999, 2018, Oracle and/or its affiliates. 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
26 package java.security.spec;
27
28 import java.math.BigInteger;
29 import java.security.spec.AlgorithmParameterSpec;
30
31 /**
32 * This class specifies the set of parameters used to generate an RSA
33 * key pair.
34 *
35 * @author Jan Luehe
36 *
37 * @see java.security.KeyPairGenerator#initialize(java.security.spec.AlgorithmParameterSpec)
38 *
39 * @since 1.3
40 */
41
42 public class RSAKeyGenParameterSpec implements AlgorithmParameterSpec {
43
44 private int keysize;
45 private BigInteger publicExponent;
46 private AlgorithmParameterSpec keyParams;
47
48 /**
49 * The public-exponent value F0 = 3.
50 */
51 public static final BigInteger F0 = BigInteger.valueOf(3);
52
53 /**
54 * The public exponent-value F4 = 65537.
55 */
56 public static final BigInteger F4 = BigInteger.valueOf(65537);
57
58 /**
59 * Constructs a new {@code RSAKeyGenParameterSpec} object from the
60 * given keysize, public-exponent value, and no key parameters.
61 *
62 * @param keysize the modulus size (specified in number of bits)
63 * @param publicExponent the public exponent
64 */
65 public RSAKeyGenParameterSpec(int keysize, BigInteger publicExponent) {
66 this(keysize, publicExponent, null);
67 }
68
69 /**
70 * Constructs a new {@code RSAKeyGenParameterSpec} object from the
71 * given keysize, public-exponent value, and key parameters.
72 *
73 * @param keysize the modulus size (specified in number of bits)
74 * @param publicExponent the public exponent
75 * @param keyParams the key parameters
76 * @since 11
77 */
78 public RSAKeyGenParameterSpec(int keysize, BigInteger publicExponent,
79 AlgorithmParameterSpec keyParams) {
80 this.keysize = keysize;
81 this.publicExponent = publicExponent;
82 this.keyParams = keyParams;
83 }
84
85 /**
86 * Returns the keysize.
87 *
88 * @return the keysize.
89 */
90 public int getKeysize() {
91 return keysize;
92 }
93
94 /**
95 * Returns the public-exponent value.
96 *
97 * @return the public-exponent value.
98 */
99 public BigInteger getPublicExponent() {
100 return publicExponent;
101 }
102
103 /**
104 * Returns the parameters to be associated with key.
105 *
106 * @return the associated parameters, may be null if
107 * not present
108 * @since 11
109 */
110 public AlgorithmParameterSpec getKeyParams() {
111 return keyParams;
112 }
113 }
|