Source for java.security.spec.RSAOtherPrimeInfo

   1: /* RSAOtherPrimeInfo.java --
   2:    Copyright (C) 2003, Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: package java.security.spec;
  39: 
  40: import java.math.BigInteger;
  41: 
  42: /**
  43:  * This class represents the triplet (prime, exponent, and coefficient) inside
  44:  * RSA's OtherPrimeInfo structure, as defined in the PKCS#1 v2.1. The ASN.1
  45:  * syntax of RSA's OtherPrimeInfo is as follows:
  46:  *
  47:  * <pre>
  48:  *  OtherPrimeInfo ::= SEQUENCE {
  49:  *    prime INTEGER,
  50:  *    exponent INTEGER,
  51:  *    coefficient INTEGER
  52:  *  }
  53:  * </pre>
  54:  *
  55:  * @since 1.4
  56:  * @see RSAPrivateCrtKeySpec
  57:  * @see java.security.interfaces.RSAMultiPrimePrivateCrtKey
  58:  */
  59: public class RSAOtherPrimeInfo
  60: {
  61:   // Constants and fields
  62:   // --------------------------------------------------------------------------
  63: 
  64:   private BigInteger prime;
  65:   private BigInteger primeExponent;
  66:   private BigInteger crtCoefficient;
  67: 
  68:   // Constructor(s)
  69:   // --------------------------------------------------------------------------
  70: 
  71:   /**
  72:    * Creates a new <code>RSAOtherPrimeInfo</code> given the prime,
  73:    * primeExponent, and crtCoefficient as defined in PKCS#1.
  74:    *
  75:    * @param prime the prime factor of n.
  76:    * @param primeExponent the exponent.
  77:    * @param crtCoefficient the Chinese Remainder Theorem coefficient.
  78:    * @throws NullPointerException if any of the parameters, i.e. prime,
  79:    * primeExponent, crtCoefficient, is <code>null</code>.
  80:    */
  81:   public RSAOtherPrimeInfo(BigInteger prime, BigInteger primeExponent,
  82:                            BigInteger crtCoefficient)
  83:   {
  84:     super();
  85: 
  86:     if (prime == null)
  87:       throw new NullPointerException("prime");
  88:     if (primeExponent == null)
  89:       throw new NullPointerException("primeExponent");
  90:     if (crtCoefficient == null)
  91:       throw new NullPointerException("crtCoefficient");
  92: 
  93:     this.prime = prime;
  94:     this.primeExponent = primeExponent;
  95:     this.crtCoefficient = crtCoefficient;
  96:   }
  97: 
  98:   // Class methods
  99:   // --------------------------------------------------------------------------
 100: 
 101:   // Instance methods
 102:   // --------------------------------------------------------------------------
 103: 
 104:   /**
 105:    * Returns the prime.
 106:    *
 107:    * @return the prime.
 108:    */
 109:   public final BigInteger getPrime()
 110:   {
 111:     return this.prime;
 112:   }
 113: 
 114:   /**
 115:    * Returns the prime's exponent.
 116:    *
 117:    * @return the primeExponent.
 118:    */
 119:   public final BigInteger getExponent()
 120:   {
 121:     return this.primeExponent;
 122:   }
 123: 
 124:   /**
 125:    * Returns the prime's crtCoefficient.
 126:    *
 127:    * @return the crtCoefficient.
 128:    */
 129:   public final BigInteger getCrtCoefficient()
 130:   {
 131:     return this.crtCoefficient;
 132:   }
 133: }