001/*
002 * nimbus-jose-jwt
003 *
004 * Copyright 2012-2016, Connect2id Ltd and contributors.
005 *
006 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use
007 * this file except in compliance with the License. You may obtain a copy of the
008 * License at
009 *
010 *    http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software distributed
013 * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
014 * CONDITIONS OF ANY KIND, either express or implied. See the License for the
015 * specific language governing permissions and limitations under the License.
016 */
017
018package com.nimbusds.jose.crypto.impl;
019
020
021import net.jcip.annotations.Immutable;
022
023
024/**
025 * Authenticated cipher text. This class is immutable.
026 *
027 * @author Vladimir Dzhuvinov
028 * @version 2013-05-06
029 */
030@Immutable
031public final class AuthenticatedCipherText {
032
033
034        /**
035         * The cipher text.
036         */
037        private final byte[] cipherText;
038
039
040        /**
041         * The authentication tag.
042         */
043        private final byte[] authenticationTag;
044
045
046        /**
047         * Creates a new authenticated cipher text.
048         *
049         * @param cipherText        The cipher text. Must not be {@code null}.
050         * @param authenticationTag The authentication tag. Must not be
051         *                          {@code null}.
052         */
053        public AuthenticatedCipherText(final byte[] cipherText, final byte[] authenticationTag) {
054
055                if (cipherText == null)
056                        throw new IllegalArgumentException("The cipher text must not be null");
057
058                this.cipherText = cipherText;
059
060
061                if (authenticationTag == null)
062                        throw new IllegalArgumentException("The authentication tag must not be null");
063
064                this.authenticationTag = authenticationTag;
065        }
066
067
068        /**
069         * Gets the cipher text.
070         *
071         * @return The cipher text.
072         */
073        public byte[] getCipherText() {
074
075                return cipherText;
076        }
077
078
079        /**
080         * Gets the authentication tag.
081         *
082         * @return The authentication tag.
083         */
084        public byte[] getAuthenticationTag() {
085
086                return authenticationTag;
087        }
088}