/* DHPublicKeySpec.java -- Wrapper for Diffie-Hellman public keys.
   Copyright (C) 2004  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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any later version.

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

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02111-1307 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
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combination.

As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
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package javax.crypto.spec;

import java.math.BigInteger;
import java.security.spec.KeySpec;

/**
 * A wrapper for Diffie-Hellman public key data.
 *
 * @author Casey Marshall (csm@gnu.org)
 * @since 1.4
 * @see DHPrivateKeySpec
 */
public class DHPublicKeySpec implements KeySpec
{

  // Variables.
  // ------------------------------------------------------------------------

  /** The base generator. */
  private BigInteger g;

  /** The prime modulus. */
  private BigInteger p;

  /** The public value. */
  private BigInteger y;

  // Constructors.
  // ------------------------------------------------------------------------

  /**
   * Create a new Diffie-Hellman public key spec.
   *
   * @param y The public value.
   * @param p The prime modulus.
   * @param g The base generator.
   */
  public DHPublicKeySpec(BigInteger y, BigInteger p, BigInteger g)
  {
    this.y = y;
    this.p = p;
    this.g = g;
  }

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

  /**
   * Get the base generator.
   *
   * @return The base generator.
   */
  public BigInteger getG()
  {
    return g;
  }

  /**
   * Get the prime modulus.
   *
   * @return The prime modulus.
   */
  public BigInteger getP()
  {
    return p;
  }

  /**
   * Get the public value.
   *
   * @return The public value.
   */
  public BigInteger getY()
  {
    return y;
  }
}
