1 /*

     2  * Copyright (c) 1998, 2013, 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}

    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 }