1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 */ 19 package org.apache.commons.compress.archivers.zip; 20 21 /** 22 * PKCS#7 Encryption Recipient Certificate List (0x0019). 23 * 24 * <p> 25 * This field MAY contain information about each of the certificates used in encryption processing and it can be used to identify who is allowed to decrypt 26 * encrypted files. This field should only appear in the archive extra data record. This field is not required and serves only to aid archive modifications by 27 * preserving public encryption key data. Individual security requirements may dictate that this data be omitted to deter information exposure. 28 * </p> 29 * 30 * <p> 31 * Note: all fields stored in Intel low-byte/high-byte order. 32 * </p> 33 * 34 * <pre> 35 * Value Size Description 36 * ----- ---- ----------- 37 * (CStore) 0x0019 2 bytes Tag for this "extra" block type 38 * TSize 2 bytes Size of the store data 39 * Version 2 bytes Format version number - must 0x0001 at this time 40 * CStore (var) PKCS#7 data blob 41 * </pre> 42 * 43 * <p> 44 * <b>See the section describing the Strong Encryption Specification for details. Refer to the section in this document entitled "Incorporating PKWARE 45 * Proprietary Technology into Your Product" for more information.</b> 46 * </p> 47 * 48 * @NotThreadSafe 49 * @since 1.11 50 */ 51 public class X0019_EncryptionRecipientCertificateList extends PKWareExtraHeader { 52 53 static final ZipShort HEADER_ID = new ZipShort(0x0019); 54 55 public X0019_EncryptionRecipientCertificateList() { 56 super(HEADER_ID); 57 } 58 59 }