From 69fe21d6e2262d6fb2b14278b7a20364468cbdcf Mon Sep 17 00:00:00 2001 From: Vadim Dashevskiy Date: Fri, 12 Oct 2012 09:56:01 +0000 Subject: Dbx_tree: folders restructurization git-svn-id: http://svn.miranda-ng.org/main/trunk@1883 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c --- plugins/Dbx_tree/encryption/ARC4/src/ARC4.cpp | 129 ++++++++++++++++++++++++++ plugins/Dbx_tree/encryption/ARC4/src/ARC4.h | 65 +++++++++++++ 2 files changed, 194 insertions(+) create mode 100644 plugins/Dbx_tree/encryption/ARC4/src/ARC4.cpp create mode 100644 plugins/Dbx_tree/encryption/ARC4/src/ARC4.h (limited to 'plugins/Dbx_tree/encryption/ARC4/src') diff --git a/plugins/Dbx_tree/encryption/ARC4/src/ARC4.cpp b/plugins/Dbx_tree/encryption/ARC4/src/ARC4.cpp new file mode 100644 index 0000000000..7f3780e6a2 --- /dev/null +++ b/plugins/Dbx_tree/encryption/ARC4/src/ARC4.cpp @@ -0,0 +1,129 @@ +/* + +dbx_tree: tree database driver for Miranda IM + +Copyright 2007-2008 Michael "Protogenes" Kunz, + +This program is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License +as published by the Free Software Foundation; either version 2 +of the License, or (at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +*/ + +#include "ARC4.h" +#include + +const wchar_t * ARC4::Name() +{ + return cName; +} +const wchar_t * ARC4::Description() +{ + return cDescription; +} +const uint32_t ARC4::BlockSizeBytes() +{ + return cBlockSizeBytes; +} +const bool ARC4::IsStreamCipher() +{ + return cIsStreamCipher; +} + +ARC4::ARC4() +{ + +} +ARC4::~ARC4() +{ + +} + +CCipher::TCipherInterface* ARC4::Create() +{ + return (new ARC4())->m_Interface; +} + +void ARC4::SetKey(void* Key, uint32_t KeyLength) +{ + uint8_t swapbyte; + uint8_t index1; + uint8_t index2; + unsigned int i; + + uint8_t * k = (uint8_t *) Key; + + for (i = 0; i < 256; ++i) + State[i] = i; + + x = 0; + y = 0; + index1 = 0; + index2 = 0; + for (i = 0; i < 256; ++i) + { + index2 = (k[index1] + State[i] + index2) & 0xff; + swapbyte = State[i]; + State[i] = State[index2]; + State[index2] = swapbyte; + index1 = (index1 + 1) % KeyLength; + } + + for (i = 0; i < 3742; ++i) + Stream(); + + Backx = x; + Backy = y; + memcpy(BackState, State, sizeof(State)); +} + +inline uint8_t ARC4::Stream() +{ + uint8_t swapbyte; + + x = (x + 1) & 0xff; + y = (State[x] + y) & 0xff; + + swapbyte = State[x]; + State[x] = State[y]; + State[y] = swapbyte; + + return State[ (State[x] + State[y]) & 0xff ]; +} + +void ARC4::Encrypt(void* Data, uint32_t Size, uint32_t Nonce, uint32_t StartByte) +{ + uint8_t * dat = (uint8_t *) Data; + x = Backx; + y = Backy; + memcpy(State, BackState, sizeof(State)); + + for (unsigned int i = (Nonce + (Nonce >> 8) + (Nonce >> 16) + (Nonce >> 24)) & 0x1ff; i > 0; --i) + Stream(); + + while (Size > 0) + { + (*dat) = (*dat) ^ Stream(); + --Size; + ++dat; + } +} +void ARC4::Decrypt(void* Data, uint32_t Size, uint32_t Nonce, uint32_t StartByte) +{ + Encrypt(Data, Size, Nonce, StartByte); +} + +extern "C" __declspec(dllexport) const TCipherInfo* CipherInfo(void * Reserved) +{ + return &ARC4::cCipherInfo; +} diff --git a/plugins/Dbx_tree/encryption/ARC4/src/ARC4.h b/plugins/Dbx_tree/encryption/ARC4/src/ARC4.h new file mode 100644 index 0000000000..48fdc35312 --- /dev/null +++ b/plugins/Dbx_tree/encryption/ARC4/src/ARC4.h @@ -0,0 +1,65 @@ +/* + +dbx_tree: tree database driver for Miranda IM + +Copyright 2007-2008 Michael "Protogenes" Kunz, + +This program is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License +as published by the Free Software Foundation; either version 2 +of the License, or (at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +*/ + +#pragma once + +#include "Cipher.h" + +class ARC4 : public CCipher +{ +private: + uint8_t x; + uint8_t y; + uint8_t State[256]; + + uint8_t Backx; + uint8_t Backy; + uint8_t BackState[256]; + + uint8_t Stream(); + + static const wchar_t* cName; + static const wchar_t* cDescription; + static const uint32_t cBlockSizeBytes = 1; + static const bool cIsStreamCipher = true; + +public: + const wchar_t * __cdecl Name(); + const wchar_t * __cdecl Description(); + const uint32_t __cdecl BlockSizeBytes(); + const bool __cdecl IsStreamCipher(); + + static const TCipherInfo cCipherInfo; + + ARC4(); + ~ARC4(); + static CCipher::TCipherInterface* __cdecl Create(); + + void __cdecl SetKey(void* Key, uint32_t KeyLength); + void __cdecl Encrypt(void* Data, uint32_t Size, uint32_t Nonce, uint32_t StartByte); + void __cdecl Decrypt(void* Data, uint32_t Size, uint32_t Nonce, uint32_t StartByte); + +}; + +const wchar_t* ARC4::cName = L"ARC4"; +const wchar_t* ARC4::cDescription = L"Streamcipher - 8bit step, fast, Ron Rivest 1987"; +const TCipherInfo ARC4::cCipherInfo = {sizeof(TCipherInfo), 'ARC4', cName, cDescription, &ARC4::Create}; -- cgit v1.2.3