org.apache.poi.poifs.crypt.EncryptionVerifier Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of poi Show documentation
Apache POI - Java API To Access Microsoft Format Files
There is a newer version: 5.3.0
/* ====================================================================
   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;


/**
 * Used when checking if a key is valid for a document 
 */
public abstract class EncryptionVerifier {
    private byte[] salt;
    private byte[] encryptedVerifier;
    private byte[] encryptedVerifierHash;
    private byte[] encryptedKey;
    // protected int verifierHashSize;
    private int spinCount;
    private CipherAlgorithm cipherAlgorithm;
    private ChainingMode chainingMode;
    private HashAlgorithm hashAlgorithm;
    
    protected EncryptionVerifier() {}

    public byte[] getSalt() {
        return salt;
    }

    /**
     * The method name is misleading - you'll get the encrypted verifier, not the plain verifier
     * @deprecated use getEncryptedVerifier()
     */
    @Deprecated
    public byte[] getVerifier() {
        return encryptedVerifier;
    }

    public byte[] getEncryptedVerifier() {
        return encryptedVerifier;
    }    
    
    /**
     * The method name is misleading - you'll get the encrypted verifier hash, not the plain verifier hash
     * @deprecated use getEnryptedVerifierHash
     */
    @Deprecated
    public byte[] getVerifierHash() {
        return encryptedVerifierHash;
    }

    public byte[] getEncryptedVerifierHash() {
        return encryptedVerifierHash;
    }    
    
    public int getSpinCount() {
        return spinCount;
    }

    public int getCipherMode() {
        return chainingMode.ecmaId;
    }

    public int getAlgorithm() {
        return cipherAlgorithm.ecmaId;
    }

    /**
     * @deprecated use getCipherAlgorithm().jceId
     */
    @Deprecated
    public String getAlgorithmName() {
        return cipherAlgorithm.jceId;
    }

    public byte[] getEncryptedKey() {
        return encryptedKey;
    }
    
    public CipherAlgorithm getCipherAlgorithm() {
        return cipherAlgorithm;
    }
    
    public HashAlgorithm getHashAlgorithm() {
        return hashAlgorithm;
    }
    
    public ChainingMode getChainingMode() {
        return chainingMode;
    }

    protected void setSalt(byte[] salt) {
        this.salt = (salt == null) ? null : salt.clone();
    }

    protected void setEncryptedVerifier(byte[] encryptedVerifier) {
        this.encryptedVerifier = (encryptedVerifier == null) ? null : encryptedVerifier.clone();
    }

    protected void setEncryptedVerifierHash(byte[] encryptedVerifierHash) {
        this.encryptedVerifierHash = (encryptedVerifierHash == null) ? null : encryptedVerifierHash.clone();
    }

    protected void setEncryptedKey(byte[] encryptedKey) {
        this.encryptedKey = (encryptedKey == null) ? null : encryptedKey.clone();
    }

    protected void setSpinCount(int spinCount) {
        this.spinCount = spinCount;
    }

    protected void setCipherAlgorithm(CipherAlgorithm cipherAlgorithm) {
        this.cipherAlgorithm = cipherAlgorithm;
    }

    protected void setChainingMode(ChainingMode chainingMode) {
        this.chainingMode = chainingMode;
    }

    protected void setHashAlgorithm(HashAlgorithm hashAlgorithm) {
        this.hashAlgorithm = hashAlgorithm;
    }
    
    
}