001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019package org.apache.commons.compress.archivers.zip; 020 021/** 022 * X.509 Certificate ID and Signature for individual file (0x0015). 023 * 024 * <p>This field contains the information about which certificate in the PKCS#7 025 * store was used to sign a particular file. It also contains the signature 026 * data. This field can appear multiple times, but can only appear once per 027 * certificate.</p> 028 * 029 * <p>Note: all fields stored in Intel low-byte/high-byte order.</p> 030 * 031 * <pre> 032 * Value Size Description 033 * ----- ---- ----------- 034 * (CID) 0x0015 2 bytes Tag for this "extra" block type 035 * TSize 2 bytes Size of data that follows 036 * RCount 4 bytes Number of recipients. (inferred) 037 * HashAlg 2 bytes Hash algorithm identifier. (inferred) 038 * TData TSize Signature Data 039 * </pre> 040 * 041 * @NotThreadSafe 042 * @since 1.11 043 */ 044public class X0015_CertificateIdForFile extends PKWareExtraHeader { 045 046 public X0015_CertificateIdForFile() { 047 super(new ZipShort(0x0015)); 048 } 049 050 private int rcount; 051 private HashAlgorithm hashAlg; 052 053 /** 054 * Get record count. 055 * @return the record count 056 */ 057 public int getRecordCount() { 058 return rcount; 059 } 060 061 /** 062 * Get hash algorithm. 063 * @return the hash algorithm 064 */ 065 public HashAlgorithm getHashAlgorithm() { 066 return hashAlg; 067 } 068 069 @Override 070 public void parseFromCentralDirectoryData(final byte[] data, final int offset, final int length) { 071 super.parseFromCentralDirectoryData(data, offset, length); 072 this.rcount = ZipShort.getValue(data, offset); 073 this.hashAlg = HashAlgorithm.getAlgorithmByCode(ZipShort.getValue(data, offset + 2)); 074 } 075}