J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2001 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 java.security.spec; |
| 27 | |
| 28 | import java.math.BigInteger; |
| 29 | |
| 30 | /** |
| 31 | * This class represents the triplet (prime, exponent, and coefficient) |
| 32 | * inside RSA's OtherPrimeInfo structure, as defined in the PKCS#1 v2.1. |
| 33 | * The ASN.1 syntax of RSA's OtherPrimeInfo is as follows: |
| 34 | * |
| 35 | * <pre> |
| 36 | * OtherPrimeInfo ::= SEQUENCE { |
| 37 | * prime INTEGER, |
| 38 | * exponent INTEGER, |
| 39 | * coefficient INTEGER |
| 40 | * } |
| 41 | * |
| 42 | * </pre> |
| 43 | * |
| 44 | * @author Valerie Peng |
| 45 | * |
| 46 | * |
| 47 | * @see RSAPrivateCrtKeySpec |
| 48 | * @see java.security.interfaces.RSAMultiPrimePrivateCrtKey |
| 49 | * |
| 50 | * @since 1.4 |
| 51 | */ |
| 52 | |
| 53 | public class RSAOtherPrimeInfo { |
| 54 | |
| 55 | private BigInteger prime; |
| 56 | private BigInteger primeExponent; |
| 57 | private BigInteger crtCoefficient; |
| 58 | |
| 59 | |
| 60 | /** |
| 61 | * Creates a new <code>RSAOtherPrimeInfo</code> |
| 62 | * given the prime, primeExponent, and |
| 63 | * crtCoefficient as defined in PKCS#1. |
| 64 | * |
| 65 | * @param prime the prime factor of n. |
| 66 | * @param primeExponent the exponent. |
| 67 | * @param crtCoefficient the Chinese Remainder Theorem |
| 68 | * coefficient. |
| 69 | * @exception NullPointerException if any of the parameters, i.e. |
| 70 | * <code>prime</code>, <code>primeExponent</code>, |
| 71 | * <code>crtCoefficient</code>, is null. |
| 72 | * |
| 73 | */ |
| 74 | public RSAOtherPrimeInfo(BigInteger prime, |
| 75 | BigInteger primeExponent, |
| 76 | BigInteger crtCoefficient) { |
| 77 | if (prime == null) { |
| 78 | throw new NullPointerException("the prime parameter must be " + |
| 79 | "non-null"); |
| 80 | } |
| 81 | if (primeExponent == null) { |
| 82 | throw new NullPointerException("the primeExponent parameter " + |
| 83 | "must be non-null"); |
| 84 | } |
| 85 | if (crtCoefficient == null) { |
| 86 | throw new NullPointerException("the crtCoefficient parameter " + |
| 87 | "must be non-null"); |
| 88 | } |
| 89 | this.prime = prime; |
| 90 | this.primeExponent = primeExponent; |
| 91 | this.crtCoefficient = crtCoefficient; |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * Returns the prime. |
| 96 | * |
| 97 | * @return the prime. |
| 98 | */ |
| 99 | public final BigInteger getPrime() { |
| 100 | return this.prime; |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * Returns the prime's exponent. |
| 105 | * |
| 106 | * @return the primeExponent. |
| 107 | */ |
| 108 | public final BigInteger getExponent() { |
| 109 | return this.primeExponent; |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * Returns the prime's crtCoefficient. |
| 114 | * |
| 115 | * @return the crtCoefficient. |
| 116 | */ |
| 117 | public final BigInteger getCrtCoefficient() { |
| 118 | return this.crtCoefficient; |
| 119 | } |
| 120 | } |