mirror of
https://github.com/ONLYOFFICE/core.git
synced 2026-04-07 13:55:33 +08:00
117 lines
4.6 KiB
C++
117 lines
4.6 KiB
C++
/*
|
|
* (c) Copyright Ascensio System SIA 2010-2017
|
|
*
|
|
* 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 Lubanas st. 125a-25, Riga, Latvia,
|
|
* EU, LV-1021.
|
|
*
|
|
* 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
|
|
*
|
|
*/
|
|
|
|
|
|
#include "RC4Crypt.h"
|
|
|
|
#include <boost/scoped_array.hpp>
|
|
|
|
namespace CRYPT
|
|
{
|
|
|
|
RC4Crypt::RC4Crypt(CRYPT::_rc4CryptData & data, std::wstring password)
|
|
{
|
|
m_VerifyPassword = false;
|
|
|
|
CopyDWORDs2Bytes(data.Salt.b1, data.Salt.b2, data.Salt.b3, data.Salt.b4, pnSalt);
|
|
CopyDWORDs2Bytes(data.EncryptedVerifier.b1 , data.EncryptedVerifier.b2, data.EncryptedVerifier.b3, data.EncryptedVerifier.b4, pnVerifier);
|
|
CopyDWORDs2Bytes(data.EncryptedVerifierHash.b1, data.EncryptedVerifierHash.b2, data.EncryptedVerifierHash.b3, data.EncryptedVerifierHash.b4, pnVerifierHash);
|
|
|
|
mxDecoder.reset(new BiffDecoder_RCF(pnSalt, pnVerifier, pnVerifierHash));
|
|
|
|
m_VerifyPassword = mxDecoder->verifyPassword(password);
|
|
}
|
|
|
|
|
|
bool RC4Crypt::IsVerify()
|
|
{
|
|
return m_VerifyPassword;
|
|
}
|
|
|
|
void RC4Crypt::CopyDWORDs2Bytes(const unsigned int b1, const unsigned int b2, const unsigned int b3, const unsigned int b4, unsigned char* byte_array)
|
|
{
|
|
byte_array[0] = static_cast<unsigned char>((b1 & 0x000000ff) >> 0);
|
|
byte_array[1] = static_cast<unsigned char>((b1 & 0x0000ff00) >> 8);
|
|
byte_array[2] = static_cast<unsigned char>((b1 & 0x00ff0000) >> 16);
|
|
byte_array[3] = static_cast<unsigned char>((b1 & 0xff000000) >> 24);
|
|
|
|
byte_array[4] = static_cast<unsigned char>((b2 & 0x000000ff) >> 0);
|
|
byte_array[5] = static_cast<unsigned char>((b2 & 0x0000ff00) >> 8);
|
|
byte_array[6] = static_cast<unsigned char>((b2 & 0x00ff0000) >> 16);
|
|
byte_array[7] = static_cast<unsigned char>((b2 & 0xff000000) >> 24);
|
|
|
|
byte_array[8] = static_cast<unsigned char>((b3 & 0x000000ff) >> 0);
|
|
byte_array[9] = static_cast<unsigned char>((b3 & 0x0000ff00) >> 8);
|
|
byte_array[10] = static_cast<unsigned char>((b3 & 0x00ff0000) >> 16);
|
|
byte_array[11] = static_cast<unsigned char>((b3 & 0xff000000) >> 24);
|
|
|
|
byte_array[12] = static_cast<unsigned char>((b4 & 0x000000ff) >> 0);
|
|
byte_array[13] = static_cast<unsigned char>((b4 & 0x0000ff00) >> 8);
|
|
byte_array[14] = static_cast<unsigned char>((b4 & 0x00ff0000) >> 16);
|
|
byte_array[15] = static_cast<unsigned char>((b4 & 0xff000000) >> 24);
|
|
}
|
|
|
|
void RC4Crypt::Decrypt(char* data, const size_t size, const unsigned long block_index)
|
|
{
|
|
if(size <= 256)
|
|
{
|
|
static unsigned char quick_buf[256];
|
|
mxDecoder->decode( quick_buf, reinterpret_cast<unsigned char*>(data), size, block_index );
|
|
memcpy(data, quick_buf, size);
|
|
}
|
|
else
|
|
{
|
|
boost::scoped_array<unsigned char> out_data(new unsigned char[size]);
|
|
mxDecoder->decode( out_data.get(), reinterpret_cast<unsigned char*>(data), size, block_index );
|
|
memcpy(data, out_data.get(), size);
|
|
}
|
|
}
|
|
void RC4Crypt::Decrypt(char* data, const size_t size, const unsigned long stream_pos, const size_t block_size)
|
|
{
|
|
if(size <= 256)
|
|
{
|
|
static unsigned char quick_buf[256];
|
|
mxDecoder->decode( quick_buf, reinterpret_cast<unsigned char*>(data), size, stream_pos, block_size );
|
|
memcpy(data, quick_buf, size);
|
|
}
|
|
else
|
|
{
|
|
boost::scoped_array<unsigned char> out_data(new unsigned char[size]);
|
|
mxDecoder->decode( out_data.get(), reinterpret_cast<unsigned char*>(data), size, stream_pos, block_size );
|
|
memcpy(data, out_data.get(), size);
|
|
}
|
|
}
|
|
|
|
};
|
|
|
|
|