/*
 * Copyright (c) 1996, 2013, 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.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package java.security.interfaces;

import java.math.BigInteger;

/**
 * Interface to a DSA-specific set of key parameters, which defines a
 * DSA <em>key family</em>. DSA (Digital Signature Algorithm) is defined
 * in NIST's FIPS-186.
 *
 * @see DSAKey
 * @see java.security.Key
 * @see java.security.Signature
 *
 * @author Benjamin Renaud
 * @author Josh Bloch
 */
public interface DSAParams {

    /**
     * Returns the prime, {@code p}.
     *
     * @return the prime, {@code p}.
     */
    public BigInteger getP();

    /**
     * Returns the subprime, {@code q}.
     *
     * @return the subprime, {@code q}.
     */
    public BigInteger getQ();

    /**
     * Returns the base, {@code g}.
     *
     * @return the base, {@code g}.
     */
    public BigInteger getG();
}
