/* RSAOtherPrimeInfo.java --
   Copyright (C) 2003, Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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Linking this library statically or dynamically with other modules is
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package java.security.spec;

import java.math.BigInteger;

/**
 * An in-memory representation of the RSA triplet (prime, exponent, and
 * coefficient) inside a PKCS#1 v2.1 <i>OtherPrimeInfo</i> structure.
 *
 * @since 1.4
 * @see RSAPrivateCrtKeySpec
 * @see java.security.interfaces.RSAMultiPrimePrivateCrtKey
 */
public class RSAOtherPrimeInfo
{
  // Constants and fields
  // --------------------------------------------------------------------------

  private BigInteger prime;
  private BigInteger primeExponent;
  private BigInteger crtCoefficient;

  // Constructor(s)
  // --------------------------------------------------------------------------

  /**
   * Constructs a new <code>RSAOtherPrimeInfo</code> given the PKCS#1 MPIs.
   * 
   * @param prime
   *          the prime factor of n.
   * @param primeExponent
   *          the exponent.
   * @param crtCoefficient
   *          the Chinese Remainder Theorem coefficient.
   * @throws NullPointerException
   *           if any of the parameters is <code>null</code>.
   */
  public RSAOtherPrimeInfo(BigInteger prime, BigInteger primeExponent,
                           BigInteger crtCoefficient)
  {
    super();

    if (prime == null)
      throw new NullPointerException("prime");
    if (primeExponent == null)
      throw new NullPointerException("primeExponent");
    if (crtCoefficient == null)
      throw new NullPointerException("crtCoefficient");

    this.prime = prime;
    this.primeExponent = primeExponent;
    this.crtCoefficient = crtCoefficient;
  }

  // Class methods
  // --------------------------------------------------------------------------

  // Instance methods
  // --------------------------------------------------------------------------

  /**
   * Returns the prime.
   *
   * @return the prime.
   */
  public final BigInteger getPrime()
  {
    return this.prime;
  }

  /**
   * Returns the prime's exponent.
   *
   * @return the primeExponent.
   */
  public final BigInteger getExponent()
  {
    return this.primeExponent;
  }

  /**
   * Returns the CRT Coefficient.
   *
   * @return the CRT Coefficient.
   */
  public final BigInteger getCrtCoefficient()
  {
    return this.crtCoefficient;
  }
}