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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
#ifndef INCLUDED_OOX_CRYPTO_CRYPTTOOLS_HXX
#define INCLUDED_OOX_CRYPTO_CRYPTTOOLS_HXX
#include <oox/dllapi.h>
#include <sal/types.h>
#include <vector>
#include <memory>
namespace oox::crypto {
/** Rounds up the input to the nearest multiple
*
* For example:
* input 1, multiple 16 = 16
* input 16, multiple 16 = 16
* input 17, multiple 16 = 32
* input 31, multiple 16 = 32
*/
template<typename T>
T roundUp(T input, T multiple)
{
if (input % multiple == 0)
return input;
return ((input / multiple) * multiple) + multiple;
}
enum class CryptoHashType
{
SHA1,
SHA256,
SHA384,
SHA512
};
struct CryptoImpl;
class OOX_DLLPUBLIC Crypto
{
public:
enum CryptoType
{
UNKNOWN,
AES_128_ECB,
AES_128_CBC,
AES_256_CBC,
};
protected:
std::unique_ptr<CryptoImpl> mpImpl;
protected:
Crypto();
public:
virtual ~Crypto();
};
class Decrypt final : public Crypto
{
public:
Decrypt(std::vector<sal_uInt8>& key, std::vector<sal_uInt8>& iv, CryptoType type);
sal_uInt32 update(
std::vector<sal_uInt8>& output,
std::vector<sal_uInt8>& input,
sal_uInt32 inputLength = 0);
static sal_uInt32 aes128ecb(
std::vector<sal_uInt8>& output,
std::vector<sal_uInt8>& input,
std::vector<sal_uInt8>& key );
};
class Encrypt final : public Crypto
{
public:
Encrypt(std::vector<sal_uInt8>& key, std::vector<sal_uInt8>& iv, CryptoType type);
sal_uInt32 update(
std::vector<sal_uInt8>& output,
std::vector<sal_uInt8>& input,
sal_uInt32 inputLength = 0);
};
class OOX_DLLPUBLIC CryptoHash final : public Crypto
{
sal_Int32 mnHashSize;
public:
CryptoHash(std::vector<sal_uInt8>& rKey, CryptoHashType eType);
bool update(std::vector<sal_uInt8>& rInput, sal_uInt32 nInputLength = 0);
std::vector<sal_uInt8> finalize();
};
} // namespace oox::crypto
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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