001    /* RSAOtherPrimeInfo.java --
002       Copyright (C) 2003, Free Software Foundation, Inc.
003    
004    This file is part of GNU Classpath.
005    
006    GNU Classpath is free software; you can redistribute it and/or modify
007    it under the terms of the GNU General Public License as published by
008    the Free Software Foundation; either version 2, or (at your option)
009    any later version.
010    
011    GNU Classpath is distributed in the hope that it will be useful, but
012    WITHOUT ANY WARRANTY; without even the implied warranty of
013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014    General Public License for more details.
015    
016    You should have received a copy of the GNU General Public License
017    along with GNU Classpath; see the file COPYING.  If not, write to the
018    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019    02110-1301 USA.
020    
021    Linking this library statically or dynamically with other modules is
022    making a combined work based on this library.  Thus, the terms and
023    conditions of the GNU General Public License cover the whole
024    combination.
025    
026    As a special exception, the copyright holders of this library give you
027    permission to link this library with independent modules to produce an
028    executable, regardless of the license terms of these independent
029    modules, and to copy and distribute the resulting executable under
030    terms of your choice, provided that you also meet, for each linked
031    independent module, the terms and conditions of the license of that
032    module.  An independent module is a module which is not derived from
033    or based on this library.  If you modify this library, you may extend
034    this exception to your version of the library, but you are not
035    obligated to do so.  If you do not wish to do so, delete this
036    exception statement from your version. */
037    
038    package java.security.spec;
039    
040    import java.math.BigInteger;
041    
042    /**
043     * An in-memory representation of the RSA triplet (prime, exponent, and
044     * coefficient) inside a PKCS#1 v2.1 <i>OtherPrimeInfo</i> structure.
045     *
046     * @since 1.4
047     * @see RSAPrivateCrtKeySpec
048     * @see java.security.interfaces.RSAMultiPrimePrivateCrtKey
049     */
050    public class RSAOtherPrimeInfo
051    {
052      // Constants and fields
053      // --------------------------------------------------------------------------
054    
055      private BigInteger prime;
056      private BigInteger primeExponent;
057      private BigInteger crtCoefficient;
058    
059      // Constructor(s)
060      // --------------------------------------------------------------------------
061    
062      /**
063       * Constructs a new <code>RSAOtherPrimeInfo</code> given the PKCS#1 MPIs.
064       * 
065       * @param prime
066       *          the prime factor of n.
067       * @param primeExponent
068       *          the exponent.
069       * @param crtCoefficient
070       *          the Chinese Remainder Theorem coefficient.
071       * @throws NullPointerException
072       *           if any of the parameters is <code>null</code>.
073       */
074      public RSAOtherPrimeInfo(BigInteger prime, BigInteger primeExponent,
075                               BigInteger crtCoefficient)
076      {
077        super();
078    
079        if (prime == null)
080          throw new NullPointerException("prime");
081        if (primeExponent == null)
082          throw new NullPointerException("primeExponent");
083        if (crtCoefficient == null)
084          throw new NullPointerException("crtCoefficient");
085    
086        this.prime = prime;
087        this.primeExponent = primeExponent;
088        this.crtCoefficient = crtCoefficient;
089      }
090    
091      // Class methods
092      // --------------------------------------------------------------------------
093    
094      // Instance methods
095      // --------------------------------------------------------------------------
096    
097      /**
098       * Returns the prime.
099       *
100       * @return the prime.
101       */
102      public final BigInteger getPrime()
103      {
104        return this.prime;
105      }
106    
107      /**
108       * Returns the prime's exponent.
109       *
110       * @return the primeExponent.
111       */
112      public final BigInteger getExponent()
113      {
114        return this.primeExponent;
115      }
116    
117      /**
118       * Returns the CRT Coefficient.
119       *
120       * @return the CRT Coefficient.
121       */
122      public final BigInteger getCrtCoefficient()
123      {
124        return this.crtCoefficient;
125      }
126    }