001/*
002 * acme4j - Java ACME client
003 *
004 * Copyright (C) 2018 Richard "Shred" K├Ârber
005 *   http://acme4j.shredzone.org
006 *
007 * Licensed under the Apache License, Version 2.0 (the "License");
008 * you may not use this file except in compliance with the License.
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.
013 */
014package org.shredzone.acme4j.challenge;
015
016import static org.shredzone.acme4j.toolbox.AcmeUtils.sha256hash;
017
018import org.shredzone.acme4j.Login;
019import org.shredzone.acme4j.toolbox.JSON;
020
021/**
022 * Implements the {@value TYPE} challenge.
023 *
024 * @since 2.1
025 */
026public class TlsAlpn01Challenge extends TokenChallenge {
027    private static final long serialVersionUID = -5590351078176091228L;
028
029    /**
030     * Challenge type name: {@value}
031     */
032    public static final String TYPE = "tls-alpn-01";
033
034    /**
035     * OID of the {@code acmeValidation} extension.
036     */
037    public static final String ACME_VALIDATION_OID = "1.3.6.1.5.5.7.1.31";
038
039    /**
040     * {@code acme-tls/1} protocol.
041     */
042    public static final String ACME_TLS_1_PROTOCOL = "acme-tls/1";
043
044    /**
045     * Creates a new generic {@link TlsAlpn01Challenge} object.
046     *
047     * @param login
048     *            {@link Login} the resource is bound with
049     * @param data
050     *            {@link JSON} challenge data
051     */
052    public TlsAlpn01Challenge(Login login, JSON data) {
053        super(login, data);
054    }
055
056    /**
057     * Returns the value that is to be used as {@code acmeValidation} extension in
058     * the test certificate.
059     */
060    public byte[] getAcmeValidation() {
061        return sha256hash(getAuthorization());
062    }
063
064    @Override
065    protected boolean acceptable(String type) {
066        return TYPE.equals(type);
067    }
068
069}