/* Derived from source code of TrueCrypt 7.1a, which is Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed by the TrueCrypt License 3.0. Modifications and additions to the original source code (contained in this file) and all other portions of this file are Copyright (c) 2013-2017 IDRIX and are governed by the Apache License 2.0 the full text of which is contained in the file License.txt included in VeraCrypt binary and source code distribution packages. */ #ifndef TC_HEADER_Platform_Mutex #define TC_HEADER_Platform_Mutex #ifdef TC_WINDOWS # include "System.h" #else # include #endif #include "PlatformBase.h" namespace VeraCrypt { class Mutex { #ifdef TC_WINDOWS typedef CRITICAL_SECTION SystemMutex_t; #else typedef pthread_mutex_t SystemMutex_t; #endif public: Mutex (); ~Mutex (); SystemMutex_t *GetSystemHandle () { return &SystemMutex; } void Lock (); void Unlock (); protected: bool Initialized; SystemMutex_t SystemMutex; private: Mutex (const Mutex &); Mutex &operator= (const Mutex &); }; class ScopeLock { public: ScopeLock (Mutex &mutex) : ScopeMutex (mutex) { mutex.Lock(); } ~ScopeLock () { ScopeMutex.Unlock(); } protected: Mutex &ScopeMutex; private: ScopeLock (const ScopeLock &); ScopeLock &operator= (const ScopeLock &); }; } #endif // TC_HEADER_Platform_Mutex d='cgit'>
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path: root/src/Volume/EncryptionMode.cpp
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/*
 Derived from source code of TrueCrypt 7.1a, which is
 Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed
 by the TrueCrypt License 3.0.

 Modifications and additions to the original source code (contained in this file)
 and all other portions of this file are Copyright (c) 2013-2016 IDRIX
 and are governed by the Apache License 2.0 the full text of which is
 contained in the file License.txt included in VeraCrypt binary and source
 code distribution packages.
*/

#include "EncryptionMode.h"
#include "EncryptionModeXTS.h"
#include "EncryptionThreadPool.h"

namespace VeraCrypt
{
	EncryptionMode::EncryptionMode () : KeySet (false), SectorOffset (0)
	{
	}

	EncryptionMode::~EncryptionMode ()
	{
	}

	void EncryptionMode::DecryptSectors (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const
	{
		EncryptionThreadPool::DoWork (EncryptionThreadPool::WorkType::DecryptDataUnits, this, data, sectorIndex, sectorCount, sectorSize);
	}

	void EncryptionMode::EncryptSectors (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const
	{
		EncryptionThreadPool::DoWork (EncryptionThreadPool::WorkType::EncryptDataUnits, this, data, sectorIndex, sectorCount, sectorSize);
	}

	EncryptionModeList EncryptionMode::GetAvailableModes ()
	{
		EncryptionModeList l;

		l.push_back (shared_ptr <EncryptionMode> (new EncryptionModeXTS ()));

		return l;
	}

	void EncryptionMode::ValidateState () const
	{
		if (!KeySet || Ciphers.size() < 1)
			throw NotInitialized (SRC_POS);
	}

	void EncryptionMode::ValidateParameters (byte *data, uint64 length) const
	{
		if ((Ciphers.size() > 0 && (length % Ciphers.front()->GetBlockSize()) != 0))
			throw ParameterIncorrect (SRC_POS);
	}

	void EncryptionMode::ValidateParameters (byte *data, uint64 sectorCount, size_t sectorSize) const
	{
		if (sectorCount == 0 || sectorSize == 0 || (sectorSize % EncryptionDataUnitSize) != 0)
			throw ParameterIncorrect (SRC_POS);
	}
}