1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/*
* Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package java.security.spec;
import java.math.BigInteger;
/**
* This class represents the triplet (prime, exponent, and coefficient)
* inside RSA's OtherPrimeInfo structure, as defined in the PKCS#1 v2.1.
* The ASN.1 syntax of RSA's OtherPrimeInfo is as follows:
*
* <pre>
* OtherPrimeInfo ::= SEQUENCE {
* prime INTEGER,
* exponent INTEGER,
* coefficient INTEGER
* }
*
* </pre>
*
* @author Valerie Peng
*
*
* @see RSAPrivateCrtKeySpec
* @see java.security.interfaces.RSAMultiPrimePrivateCrtKey
*
* @since 1.4
*/
public class RSAOtherPrimeInfo {
private BigInteger prime;
private BigInteger primeExponent;
private BigInteger crtCoefficient;
/**
* Creates a new {@code RSAOtherPrimeInfo}
* given the prime, primeExponent, and
* crtCoefficient as defined in PKCS#1.
*
* @param prime the prime factor of n.
* @param primeExponent the exponent.
* @param crtCoefficient the Chinese Remainder Theorem
* coefficient.
* @exception NullPointerException if any of the parameters, i.e.
* {@code prime}, {@code primeExponent},
* {@code crtCoefficient}, is null.
*
*/
public RSAOtherPrimeInfo(BigInteger prime,
BigInteger primeExponent,
BigInteger crtCoefficient) {
if (prime == null) {
throw new NullPointerException("the prime parameter must be " +
"non-null");
}
if (primeExponent == null) {
throw new NullPointerException("the primeExponent parameter " +
"must be non-null");
}
if (crtCoefficient == null) {
throw new NullPointerException("the crtCoefficient parameter " +
"must be non-null");
}
this.prime = prime;
this.primeExponent = primeExponent;
this.crtCoefficient = crtCoefficient;
}
/**
* Returns the prime.
*
* @return the prime.
*/
public final BigInteger getPrime() {
return this.prime;
}
/**
* Returns the prime's exponent.
*
* @return the primeExponent.
*/
public final BigInteger getExponent() {
return this.primeExponent;
}
/**
* Returns the prime's crtCoefficient.
*
* @return the crtCoefficient.
*/
public final BigInteger getCrtCoefficient() {
return this.crtCoefficient;
}
}
|