package org.jboss.seam.security.crypto;

/**
 * Copied from Matthias Gartner's PKCS#5 implementation - see
 * http://rtner.de/software/PBKDF2.html
 * 
 * <p>
 * A free Java implementation of Password Based Key Derivation Function 2 as
 * defined by RFC 2898. Copyright (c) 2007 Matthias G&auml;rtner
 * </p>
 * <p>
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 * </p>
 * <p>
 * This library 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 Lesser General Public License for more
 * details.
 * </p>
 * <p>
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 * </p>
 * <p>
 * For Details, see <a
 * href="http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html">http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html</a>.
 * </p>
 * 
 * @author Matthias G&auml;rtner
 * @version 1.0
 */
public interface PBKDF2Formatter
{
    /**
     * Convert parameters to String.
     * 
     * @param p
     *            Parameters object to output.
     * @return String representation
     */
    public abstract String toString(PBKDF2Parameters p);

    /**
     * Convert String to parameters. Depending on actual implementation, it may
     * be required to set further fields externally.
     * 
     * @param s
     *            String representation of parameters to decode.
     * @return <code>false</code> syntax OK, <code>true</code> some syntax
     *         issue.
     */
    public abstract boolean fromString(PBKDF2Parameters p, String s);
}