001/* RSAOtherPrimeInfo.java --
002   Copyright (C) 2003, Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038package java.security.spec;
039
040import 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 */
050public 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}