org.apache.poi.poifs.crypt.binaryrc4.BinaryRC4EncryptionInfoBuilder Maven / Gradle / Ivy
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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
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http://www.apache.org/licenses/LICENSE-2.0
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distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.poi.poifs.crypt.binaryrc4;
import java.io.IOException;
import org.apache.poi.poifs.crypt.*;
import org.apache.poi.util.LittleEndianInput;
public class BinaryRC4EncryptionInfoBuilder implements EncryptionInfoBuilder {
EncryptionInfo info;
BinaryRC4EncryptionHeader header;
BinaryRC4EncryptionVerifier verifier;
BinaryRC4Decryptor decryptor;
BinaryRC4Encryptor encryptor;
public BinaryRC4EncryptionInfoBuilder() {
}
public void initialize(EncryptionInfo info, LittleEndianInput dis)
throws IOException {
this.info = info;
int vMajor = info.getVersionMajor();
int vMinor = info.getVersionMinor();
assert (vMajor == 1 && vMinor == 1);
header = new BinaryRC4EncryptionHeader();
verifier = new BinaryRC4EncryptionVerifier(dis);
decryptor = new BinaryRC4Decryptor(this);
encryptor = new BinaryRC4Encryptor(this);
}
public void initialize(EncryptionInfo info,
CipherAlgorithm cipherAlgorithm, HashAlgorithm hashAlgorithm,
int keyBits, int blockSize, ChainingMode chainingMode) {
this.info = info;
header = new BinaryRC4EncryptionHeader();
verifier = new BinaryRC4EncryptionVerifier();
decryptor = new BinaryRC4Decryptor(this);
encryptor = new BinaryRC4Encryptor(this);
}
public BinaryRC4EncryptionHeader getHeader() {
return header;
}
public BinaryRC4EncryptionVerifier getVerifier() {
return verifier;
}
public BinaryRC4Decryptor getDecryptor() {
return decryptor;
}
public BinaryRC4Encryptor getEncryptor() {
return encryptor;
}
public EncryptionInfo getEncryptionInfo() {
return info;
}
}