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

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 * 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

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package javax.crypto.spec;

import java.math.BigInteger;

import java.security.spec.AlgorithmParameterSpec;

/**

 * This class specifies the set of parameters used for generating

 * Diffie-Hellman (system) parameters for use in Diffie-Hellman key

 * agreement. This is typically done by a central

 * authority.

 *

 * <p> The central authority, after computing the parameters, must send this

 * information to the parties looking to agree on a secret key.

 *

 * @author Jan Luehe

 *

 * @see DHParameterSpec

 * @since 1.4

 */

public class DHGenParameterSpec implements AlgorithmParameterSpec {

    // The size in bits of the prime modulus

    private int primeSize;

    // The size in bits of the random exponent (private value)

    private int exponentSize;

    /**

     * Constructs a parameter set for the generation of Diffie-Hellman

     * (system) parameters. The constructed parameter set can be used to

     * initialize an

     * {@link java.security.AlgorithmParameterGenerator AlgorithmParameterGenerator}

     * object for the generation of Diffie-Hellman parameters.

     *

     * @param primeSize the size (in bits) of the prime modulus.

     * @param exponentSize the size (in bits) of the random exponent.

     */

    public DHGenParameterSpec(int primeSize, int exponentSize) {

        this.primeSize = primeSize;

        this.exponentSize = exponentSize;

    }

    /**

     * Returns the size in bits of the prime modulus.

     *

     * @return the size in bits of the prime modulus

     */

    public int getPrimeSize() {

        return this.primeSize;

    }

    /**

     * Returns the size in bits of the random exponent (private value).

     *

     * @return the size in bits of the random exponent (private value)

     */

    public int getExponentSize() {

        return this.exponentSize;

    }

}