001/* 002 * nimbus-jose-jwt 003 * 004 * Copyright 2012-2016, Connect2id Ltd. 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; 019 020 021import com.nimbusds.jose.util.Base64URL; 022 023 024/** 025 * JSON Web Encryption (JWE) decrypter. 026 * 027 * @author Vladimir Dzhuvinov 028 * @version 2015-04-21 029 */ 030public interface JWEDecrypter extends JWEProvider { 031 032 033 /** 034 * Decrypts the specified cipher text of a {@link JWEObject JWE Object}. 035 * 036 * @param header The JSON Web Encryption (JWE) header. Must 037 * specify a supported JWE algorithm and method. 038 * Must not be {@code null}. 039 * @param encryptedKey The encrypted key, {@code null} if not required 040 * by the JWE algorithm. 041 * @param iv The initialisation vector, {@code null} if not 042 * required by the JWE algorithm. 043 * @param cipherText The cipher text to decrypt. Must not be 044 * {@code null}. 045 * @param authTag The authentication tag, {@code null} if not 046 * required. 047 * 048 * @return The clear text. 049 * 050 * @throws JOSEException If the JWE algorithm or method is not 051 * supported, if a critical header parameter is 052 * not supported or marked for deferral to the 053 * application, or if decryption failed for some 054 * other reason. 055 */ 056 byte[] decrypt(final JWEHeader header, 057 final Base64URL encryptedKey, 058 final Base64URL iv, 059 final Base64URL cipherText, 060 final Base64URL authTag) 061 throws JOSEException; 062}