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    1   /*
    2    * Copyright (c) 1998, 2003, 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 specifies an RSA private key, as defined in the PKCS#1
   32    * standard, using the Chinese Remainder Theorem (CRT) information values for
   33    * efficiency.
   34    *
   35    * @author Jan Luehe
   36    *
   37    *
   38    * @see java.security.Key
   39    * @see java.security.KeyFactory
   40    * @see KeySpec
   41    * @see PKCS8EncodedKeySpec
   42    * @see RSAPrivateKeySpec
   43    * @see RSAPublicKeySpec
   44    */
   45   
   46   public class RSAPrivateCrtKeySpec extends RSAPrivateKeySpec {
   47   
   48       private final BigInteger publicExponent;
   49       private final BigInteger primeP;
   50       private final BigInteger primeQ;
   51       private final BigInteger primeExponentP;
   52       private final BigInteger primeExponentQ;
   53       private final BigInteger crtCoefficient;
   54   
   55   
   56   
   57      /**
   58       * Creates a new <code>RSAPrivateCrtKeySpec</code>
   59       * given the modulus, publicExponent, privateExponent,
   60       * primeP, primeQ, primeExponentP, primeExponentQ, and
   61       * crtCoefficient as defined in PKCS#1.
   62       *
   63       * @param modulus the modulus n
   64       * @param publicExponent the public exponent e
   65       * @param privateExponent the private exponent d
   66       * @param primeP the prime factor p of n
   67       * @param primeQ the prime factor q of n
   68       * @param primeExponentP this is d mod (p-1)
   69       * @param primeExponentQ this is d mod (q-1)
   70       * @param crtCoefficient the Chinese Remainder Theorem
   71       * coefficient q-1 mod p
   72       */
   73       public RSAPrivateCrtKeySpec(BigInteger modulus,
   74                                   BigInteger publicExponent,
   75                                   BigInteger privateExponent,
   76                                   BigInteger primeP,
   77                                   BigInteger primeQ,
   78                                   BigInteger primeExponentP,
   79                                   BigInteger primeExponentQ,
   80                                   BigInteger crtCoefficient) {
   81           super(modulus, privateExponent);
   82           this.publicExponent = publicExponent;
   83           this.primeP = primeP;
   84           this.primeQ = primeQ;
   85           this.primeExponentP = primeExponentP;
   86           this.primeExponentQ = primeExponentQ;
   87           this.crtCoefficient = crtCoefficient;
   88       }
   89   
   90       /**
   91        * Returns the public exponent.
   92        *
   93        * @return the public exponent
   94        */
   95       public BigInteger getPublicExponent() {
   96           return this.publicExponent;
   97       }
   98   
   99       /**
  100        * Returns the primeP.
  101   
  102        * @return the primeP
  103        */
  104       public BigInteger getPrimeP() {
  105           return this.primeP;
  106       }
  107   
  108       /**
  109        * Returns the primeQ.
  110        *
  111        * @return the primeQ
  112        */
  113       public BigInteger getPrimeQ() {
  114           return this.primeQ;
  115       }
  116   
  117       /**
  118        * Returns the primeExponentP.
  119        *
  120        * @return the primeExponentP
  121        */
  122       public BigInteger getPrimeExponentP() {
  123           return this.primeExponentP;
  124       }
  125   
  126       /**
  127        * Returns the primeExponentQ.
  128        *
  129        * @return the primeExponentQ
  130        */
  131       public BigInteger getPrimeExponentQ() {
  132           return this.primeExponentQ;
  133       }
  134   
  135       /**
  136        * Returns the crtCoefficient.
  137        *
  138        * @return the crtCoefficient
  139        */
  140       public BigInteger getCrtCoefficient() {
  141           return this.crtCoefficient;
  142       }
  143   }

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