142 lines
4.4 KiB
Java
142 lines
4.4 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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/**
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* Reads and processes OOXML Encryption Headers
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* The constants are largely based on ZIP constants.
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*/
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public abstract class EncryptionHeader implements Cloneable {
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public static final int ALGORITHM_RC4 = CipherAlgorithm.rc4.ecmaId;
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public static final int ALGORITHM_AES_128 = CipherAlgorithm.aes128.ecmaId;
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public static final int ALGORITHM_AES_192 = CipherAlgorithm.aes192.ecmaId;
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public static final int ALGORITHM_AES_256 = CipherAlgorithm.aes256.ecmaId;
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public static final int HASH_NONE = HashAlgorithm.none.ecmaId;
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public static final int HASH_SHA1 = HashAlgorithm.sha1.ecmaId;
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public static final int HASH_SHA256 = HashAlgorithm.sha256.ecmaId;
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public static final int HASH_SHA384 = HashAlgorithm.sha384.ecmaId;
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public static final int HASH_SHA512 = HashAlgorithm.sha512.ecmaId;
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public static final int PROVIDER_RC4 = CipherProvider.rc4.ecmaId;
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public static final int PROVIDER_AES = CipherProvider.aes.ecmaId;
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public static final int MODE_ECB = ChainingMode.ecb.ecmaId;
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public static final int MODE_CBC = ChainingMode.cbc.ecmaId;
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public static final int MODE_CFB = ChainingMode.cfb.ecmaId;
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private int flags;
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private int sizeExtra;
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private CipherAlgorithm cipherAlgorithm;
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private HashAlgorithm hashAlgorithm;
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private int keyBits;
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private int blockSize;
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private CipherProvider providerType;
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private ChainingMode chainingMode;
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private byte[] keySalt;
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private String cspName;
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protected EncryptionHeader() {}
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public ChainingMode getChainingMode() {
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return chainingMode;
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}
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protected void setChainingMode(ChainingMode chainingMode) {
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this.chainingMode = chainingMode;
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}
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public int getFlags() {
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return flags;
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}
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protected void setFlags(int flags) {
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this.flags = flags;
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}
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public int getSizeExtra() {
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return sizeExtra;
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}
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protected void setSizeExtra(int sizeExtra) {
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this.sizeExtra = sizeExtra;
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}
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public CipherAlgorithm getCipherAlgorithm() {
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return cipherAlgorithm;
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}
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protected void setCipherAlgorithm(CipherAlgorithm cipherAlgorithm) {
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this.cipherAlgorithm = cipherAlgorithm;
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}
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public HashAlgorithm getHashAlgorithmEx() {
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return hashAlgorithm;
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}
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protected void setHashAlgorithm(HashAlgorithm hashAlgorithm) {
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this.hashAlgorithm = hashAlgorithm;
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}
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public int getKeySize() {
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return keyBits;
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}
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protected void setKeySize(int keyBits) {
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this.keyBits = keyBits;
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}
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public int getBlockSize() {
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return blockSize;
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}
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protected void setBlockSize(int blockSize) {
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this.blockSize = blockSize;
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}
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public byte[] getKeySalt() {
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return keySalt;
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}
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protected void setKeySalt(byte salt[]) {
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this.keySalt = (salt == null) ? null : salt.clone();
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}
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public CipherProvider getCipherProvider() {
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return providerType;
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}
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protected void setCipherProvider(CipherProvider providerType) {
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this.providerType = providerType;
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}
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public String getCspName() {
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return cspName;
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}
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protected void setCspName(String cspName) {
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this.cspName = cspName;
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}
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@Override
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public EncryptionHeader clone() throws CloneNotSupportedException {
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EncryptionHeader other = (EncryptionHeader)super.clone();
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other.keySalt = (keySalt == null) ? null : keySalt.clone();
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return other;
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}
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}
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