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| 1 | +/* | |
| 2 | + * Copyright (c) 2001, 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 | |
| 23 | + * 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 | +} | |