com.perimeterx.utils.PRF Maven / Gradle / Ivy
/*
* A free Java implementation of Password Based Key Derivation Function 2 as
* defined by RFC 2898. Copyright 2007, 2014, Matthias Gärtner
*
* This 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.
*
* This software 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package com.perimeterx.utils;
/**
* Interface to Pseudorandom Function.
*
* @author Matthias Gärtner
* @see RFC 2898
*/
public interface PRF {
/**
* Initialize this instance with the user-supplied password.
*
* @param P The password supplied as array of bytes. It is the caller's
* task to convert String passwords to bytes as appropriate.
*/
public void init(byte[] P);
/**
* Pseudo Random Function
*
* @param M Input data/message etc. Together with any data supplied during
* initilization.
* @return Random bytes of hLen length.
*/
public byte[] doFinal(byte[] M);
/**
* Query block size of underlying algorithm/mechanism.
*
* @return block size
*/
public int getHLen();
}