122 lines
3.7 KiB
Java
122 lines
3.7 KiB
Java
/*
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* Copyright (c) 2001, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package java.security.spec;
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import java.math.BigInteger;
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/**
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* This class represents the triplet (prime, exponent, and coefficient)
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* inside RSA's OtherPrimeInfo structure, as defined in the
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* <a href="https://tools.ietf.org/rfc/rfc8017.txt">PKCS#1 v2.2</a> standard.
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* The ASN.1 syntax of RSA's OtherPrimeInfo is as follows:
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*
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* <pre>
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* OtherPrimeInfo ::= SEQUENCE {
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* prime INTEGER,
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* exponent INTEGER,
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* coefficient INTEGER
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* }
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*
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* </pre>
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*
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* @author Valerie Peng
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*
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*
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* @see RSAPrivateCrtKeySpec
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* @see java.security.interfaces.RSAMultiPrimePrivateCrtKey
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*
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* @since 1.4
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*/
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public class RSAOtherPrimeInfo {
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private BigInteger prime;
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private BigInteger primeExponent;
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private BigInteger crtCoefficient;
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/**
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* Creates a new {@code RSAOtherPrimeInfo}
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* given the prime, primeExponent, and
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* crtCoefficient as defined in PKCS#1.
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*
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* @param prime the prime factor of n.
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* @param primeExponent the exponent.
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* @param crtCoefficient the Chinese Remainder Theorem
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* coefficient.
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* @throws NullPointerException if any of the parameters, i.e.
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* {@code prime}, {@code primeExponent},
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* {@code crtCoefficient}, is null.
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*
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*/
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public RSAOtherPrimeInfo(BigInteger prime,
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BigInteger primeExponent,
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BigInteger crtCoefficient) {
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if (prime == null) {
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throw new NullPointerException("the prime parameter must be " +
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"non-null");
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}
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if (primeExponent == null) {
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throw new NullPointerException("the primeExponent parameter " +
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"must be non-null");
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}
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if (crtCoefficient == null) {
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throw new NullPointerException("the crtCoefficient parameter " +
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"must be non-null");
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}
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this.prime = prime;
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this.primeExponent = primeExponent;
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this.crtCoefficient = crtCoefficient;
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}
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/**
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* Returns the prime.
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*
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* @return the prime.
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*/
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public final BigInteger getPrime() {
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return this.prime;
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}
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/**
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* Returns the prime's exponent.
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*
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* @return the primeExponent.
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*/
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public final BigInteger getExponent() {
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return this.primeExponent;
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}
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/**
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* Returns the prime's crtCoefficient.
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*
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* @return the crtCoefficient.
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*/
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public final BigInteger getCrtCoefficient() {
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return this.crtCoefficient;
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}
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}
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