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DocumentServer-v-9.2.0/core/OfficeCryptReader/source/CryptTransform.h
Yajbir Singh f1b860b25c
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updated
2025-12-11 19:03:17 +05:30

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/*
* (c) Copyright Ascensio System SIA 2010-2023
*
* This program is a free software product. You can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License (AGPL)
* version 3 as published by the Free Software Foundation. In accordance with
* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
* that Ascensio System SIA expressly excludes the warranty of non-infringement
* of any third-party rights.
*
* This program is distributed WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
*
* You can contact Ascensio System SIA at 20A-6 Ernesta Birznieka-Upish
* street, Riga, Latvia, EU, LV-1050.
*
* The interactive user interfaces in modified source and object code versions
* of the Program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU AGPL version 3.
*
* Pursuant to Section 7(b) of the License you must retain the original Product
* logo when distributing the program. Pursuant to Section 7(e) we decline to
* grant you any rights under trademark law for use of our trademarks.
*
* All the Product's GUI elements, including illustrations and icon sets, as
* well as technical writing content are licensed under the terms of the
* Creative Commons Attribution-ShareAlike 4.0 International. See the License
* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
*
*/
#pragma once
#include <string>
#include <vector>
#include <boost/shared_ptr.hpp>
namespace CRYPT_METHOD
{
enum _hashAlgorithm
{
None,
MD5,
SHA1,
SHA224,
SHA256,
SHA384,
SHA512,
PBKDF2
};
enum _cipherAlgorithm
{
XOR,
RC4,
AES_CBC,
AES_CFB,
AES_ECB,
Blowfish_CFB,
DES_CBC,
DES_ECB
};
}
namespace CRYPT
{
class Decryptor
{
public:
virtual void Decrypt(char* data, const size_t size, const unsigned long stream_pos, const size_t block_size) = 0;
virtual void Decrypt(char* data, const size_t size, const unsigned long block_index) = 0;
virtual bool SetPassword(std::wstring password) = 0;
virtual void Init(const unsigned long val) = 0;
virtual bool IsVerify() = 0;
};
typedef boost::shared_ptr<Decryptor> DecryptorPtr;
struct _ecmaWriteProtectData
{
CRYPT_METHOD::_hashAlgorithm hashAlgorithm = CRYPT_METHOD::SHA512;
int spinCount = 100000;
std::string saltValue;
std::string hashValue;
};
typedef _ecmaWriteProtectData _odfWriteProtectData;
struct _ecmaCryptData
{
//default ms2010
//_ecmaCryptData() : cipherAlgorithm(), hashAlgorithm(), spinCount(100000),
// keySize(0x10), hashSize(), blockSize(0x10), saltSize(0x10), bAgile(true)
//default ms2013/ms2016
//_cryptData(): cipherAlgorithm(CRYPT_METHOD::AES_CBC), hashAlgorithm(CRYPT_METHOD::SHA256), spinCount(100000),
// keySize(0x20), hashSize(0x40), blockSize(0x10), saltSize(0x10), bAgile(true)
//{
//}
CRYPT_METHOD::_cipherAlgorithm cipherAlgorithm = CRYPT_METHOD::AES_CBC;
CRYPT_METHOD::_hashAlgorithm hashAlgorithm = CRYPT_METHOD::SHA1;
int spinCount = 100000;
int keySize = 0x10;
int hashSize = 0x14;
int blockSize = 0x10;
int saltSize = 0x10;
std::string saltValue;
std::string encryptedKeyValue;
std::string encryptedVerifierInput;
std::string encryptedVerifierValue;
std::string encryptedHmacKey;
std::string encryptedHmacValue;
//---------------------------------------------------------------------------------------------
CRYPT_METHOD::_hashAlgorithm dataHashAlgorithm = CRYPT_METHOD::SHA1;
CRYPT_METHOD::_cipherAlgorithm dataCipherAlgorithm = CRYPT_METHOD::AES_CBC;
std::string dataSaltValue;
int dataKeySize = 0x10;
int dataHashSize = 0x14;
int dataBlockSize = 0x10;
int dataSaltSize = 0x10;
bool bAgile = true;
//..........
bool fDocProps = true;
};
struct _odfCryptData
{
CRYPT_METHOD::_cipherAlgorithm cipherAlgorithm = CRYPT_METHOD::AES_CBC;
CRYPT_METHOD::_hashAlgorithm start_hashAlgorithm = CRYPT_METHOD::SHA1;
int start_hashSize = 20;
int spinCount = 1024;
int keySize = 16;
std::string saltValue;
std::string initializationVector;
std::string checksum;
int checksum_size = 1024;
CRYPT_METHOD::_hashAlgorithm checksum_hashAlgorithm = CRYPT_METHOD::SHA1;
};
//---------------------------------------------------------------------------------------------------
class ECMAWriteProtect
{
public:
ECMAWriteProtect(){}
virtual ~ECMAWriteProtect(){}
void SetPassword (const std::wstring &password);
void SetCryptData(_ecmaWriteProtectData &data);
void GetCryptData(_ecmaWriteProtectData &data);
void Generate();
bool Verify();
bool VerifyWrike();
private:
std::wstring password;
_ecmaWriteProtectData data;
};
//---------------------------------------------------------------------------------------------------
class ODFWriteProtect
{
public:
ODFWriteProtect(){}
virtual ~ODFWriteProtect(){}
void SetPassword (const std::wstring &password);
void SetCryptData(_odfWriteProtectData &data);
void GetCryptData(_odfWriteProtectData &data);
void Generate();
bool Verify();
private:
std::wstring password;
_odfWriteProtectData data;
};
//---------------------------------------------------------------------------------------------------
class ECMAEncryptor
{
public:
ECMAEncryptor();
virtual ~ECMAEncryptor(){}
void SetPassword (std::wstring password);
void SetCryptData(_ecmaCryptData &data);
void GetCryptData(_ecmaCryptData &data);
int Encrypt (unsigned char* data, int size, unsigned char*& data_out);
void UpdateDataIntegrity(unsigned char* data, int size);
private:
std::wstring password;
_ecmaCryptData cryptData;
};
class ECMADecryptor : public Decryptor
{
public:
ECMADecryptor();
virtual ~ECMADecryptor();
virtual void Init(const unsigned long val) {}
virtual void Decrypt (char* data, const size_t size, const unsigned long stream_pos, const size_t block_size);
virtual void Decrypt (char* data, const size_t size, const unsigned long start_iv_block);
virtual bool SetPassword (std::wstring password);
virtual bool IsVerify();
bool CheckDataIntegrity(unsigned char* data, int size);
void SetCryptData(_ecmaCryptData &data);
void Decrypt (unsigned char* data, int size, unsigned char*& data_out, unsigned long start_iv_block);
private:
std::wstring password;
_ecmaCryptData cryptData;
bool bVerify;
};
class ODFDecryptor
{
public:
ODFDecryptor();
virtual ~ODFDecryptor(){}
void SetCryptData(_odfCryptData &data);
bool Decrypt (const std::wstring &wpassword, unsigned char* data_inp, int size_inp, unsigned char*& data_out, int &size_out);
private:
_odfCryptData cryptData;
bool bVerify;
};
class ODFEncryptor
{
public:
ODFEncryptor(){}
virtual ~ODFEncryptor(){}
void SetCryptData(_odfCryptData &data);
void GetCryptData(_odfCryptData &data);
int Encrypt (const std::wstring &password, unsigned char* data, int size, unsigned char*& data_out);
private:
_odfCryptData cryptData;
};
}