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- /* ====================================================================
- Licensed to the Apache Software Foundation (ASF) under one or more
- contributor license agreements. See the NOTICE file distributed with
- this work for additional information regarding copyright ownership.
- The ASF licenses this file to You under the Apache License, Version 2.0
- (the "License"); you may not use this file except in compliance with
- the License. You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
- ==================================================================== */
- package org.apache.poi.poifs.crypt;
-
- import org.apache.poi.poifs.filesystem.DocumentInputStream;
- import org.apache.poi.poifs.filesystem.POIFSFileSystem;
-
- import java.io.IOException;
-
- /**
- * @author Maxim Valyanskiy
- */
- public class EncryptionInfo {
- private final int versionMajor;
- private final int versionMinor;
- private final int encryptionFlags;
-
- private final EncryptionHeader header;
- private final EncryptionVerifier verifier;
-
- public EncryptionInfo(POIFSFileSystem fs) throws IOException {
- DocumentInputStream dis = fs.createDocumentInputStream("EncryptionInfo");
-
- versionMajor = dis.readShort();
- versionMinor = dis.readShort();
- encryptionFlags = dis.readInt();
-
- int hSize = dis.readInt();
-
- header = new EncryptionHeader(dis);
-
- if (header.getAlgorithm()==EncryptionHeader.ALGORITHM_RC4) {
- verifier = new EncryptionVerifier(dis, 20);
- } else {
- verifier = new EncryptionVerifier(dis, 32);
- }
- }
-
- public int getVersionMajor() {
- return versionMajor;
- }
-
- public int getVersionMinor() {
- return versionMinor;
- }
-
- public int getEncryptionFlags() {
- return encryptionFlags;
- }
-
- public EncryptionHeader getHeader() {
- return header;
- }
-
- public EncryptionVerifier getVerifier() {
- return verifier;
- }
- }
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