53 lines
3.0 KiB
Java
53 lines
3.0 KiB
Java
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.poifs.crypt;
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import org.apache.poi.hssf.record.crypto.Biff8EncryptionKey;
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/**
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* Office supports various encryption modes.
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* The encryption is either based on the whole container ({@link #agile}, {@link #standard} or {@link #binaryRC4})
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* or record based ({@link #cryptoAPI}). The record based encryption can't be accessed directly, but will be
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* invoked by using the {@link Biff8EncryptionKey#setCurrentUserPassword(String)} before saving the document.
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*/
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public enum EncryptionMode {
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/* @see <a href="http://msdn.microsoft.com/en-us/library/dd907466(v=office.12).aspx">2.3.6 Office Binary Document RC4 Encryption</a> */
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binaryRC4("org.apache.poi.poifs.crypt.binaryrc4.BinaryRC4EncryptionInfoBuilder", 1, 1, 0x0),
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/* @see <a href="http://msdn.microsoft.com/en-us/library/dd905225(v=office.12).aspx">2.3.5 Office Binary Document RC4 CryptoAPI Encryption</a> */
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cryptoAPI("org.apache.poi.poifs.crypt.cryptoapi.CryptoAPIEncryptionInfoBuilder", 4, 2, 0x04),
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/* @see <a href="http://msdn.microsoft.com/en-us/library/dd906097(v=office.12).aspx">2.3.4.5 \EncryptionInfo Stream (Standard Encryption)</a> */
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standard("org.apache.poi.poifs.crypt.standard.StandardEncryptionInfoBuilder", 4, 2, 0x24),
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/* @see <a href="http://msdn.microsoft.com/en-us/library/dd925810(v=office.12).aspx">2.3.4.10 \EncryptionInfo Stream (Agile Encryption)</a> */
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agile("org.apache.poi.poifs.crypt.agile.AgileEncryptionInfoBuilder", 4, 4, 0x40),
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/* @see <a href="https://msdn.microsoft.com/en-us/library/dd907599(v=office.12).aspx">XOR Obfuscation</a> */
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xor("org.apache.poi.poifs.crypt.xor.XOREncryptionInfoBuilder", 0, 0, 0)
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;
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public final String builder;
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public final int versionMajor;
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public final int versionMinor;
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public final int encryptionFlags;
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EncryptionMode(String builder, int versionMajor, int versionMinor, int encryptionFlags) {
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this.builder = builder;
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this.versionMajor = versionMajor;
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this.versionMinor = versionMinor;
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this.encryptionFlags = encryptionFlags;
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}
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}
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