/*

 * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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 */

package javax.crypto.spec;

import java.math.BigInteger;

/**

 * This class specifies a Diffie-Hellman public key with its associated

 * parameters.

 *

 * <p>Note that this class does not perform any validation on specified

 * parameters. Thus, the specified values are returned directly even

 * if they are null.

 *

 * @author Jan Luehe

 *

 * @see DHPrivateKeySpec

 * @since 1.4

 */

public class DHPublicKeySpec implements java.security.spec.KeySpec {

    // The public value

    private BigInteger y;

    // The prime modulus

    private BigInteger p;

    // The base generator

    private BigInteger g;

    /**

     * Constructor that takes a public value <code>y</code>, a prime

     * modulus <code>p</code>, and a base generator <code>g</code>.

     * @param y  public value y

     * @param p  prime modulus p

     * @param g  base generator g

     */

    public DHPublicKeySpec(BigInteger y, BigInteger p, BigInteger g) {

        this.y = y;

        this.p = p;

        this.g = g;

    }

    /**

     * Returns the public value <code>y</code>.

     *

     * @return the public value <code>y</code>

     */

    public BigInteger getY() {

        return this.y;

    }

    /**

     * Returns the prime modulus <code>p</code>.

     *

     * @return the prime modulus <code>p</code>

     */

    public BigInteger getP() {

        return this.p;

    }

    /**

     * Returns the base generator <code>g</code>.

     *

     * @return the base generator <code>g</code>

     */

    public BigInteger getG() {

        return this.g;

    }

}