Save This Page
Home » openjdk-7 » java » security » spec » [javadoc | source]
    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   }

Save This Page
Home » openjdk-7 » java » security » spec » [javadoc | source]