001/*
002 * jPOS Project [http://jpos.org]
003 * Copyright (C) 2000-2026 jPOS Software SRL
004 *
005 * This program is free software: you can redistribute it and/or modify
006 * it under the terms of the GNU Affero General Public License as
007 * published by the Free Software Foundation, either version 3 of the
008 * License, or (at your option) any later version.
009 *
010 * This program is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
013 * GNU Affero General Public License for more details.
014 *
015 * You should have received a copy of the GNU Affero General Public License
016 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
017 */
018
019package org.jpos.security;
020
021/**
022 * Indicate method for the derivation by the issuer of a 16-byte
023 * ICC Master Key used for Application Cryptogram generation,
024 * issuer authentication, and secure messaging.
025 * <br>
026 * These methods take as input the PAN and PAN Sequence Number,
027 * plus a 16-byte Issuer Master Key IMK,
028 * and produce the 16-byte ICC Master Key MK
029 * <br>
030 * Described in EMV v4.2 Book 2, Annex A1.4 Master Key Derivation
031 *
032 * @author Robert Demski
033 * @version $Revision$ $Date$
034 */
035public enum MKDMethod {
036
037   /**
038    * Uses PAN, PAN Sequence Number, IMK, Triple DES
039    * Described in EMV v4.2 Book 2, Annex A1.4.1
040    */
041   OPTION_A
042
043   /**
044    * Uses PAN, PAN Sequence Number, IMK, Triple DES and SHA-1
045    * and decimalisation of hex digits.
046    * Described in EMV v4.2 Book 2, Annex A1.4.2
047    * NOTE: For PAN with length less or equals 16 it works as {@code OPTION_A}
048    */
049  ,OPTION_B
050
051}