mirror of
https://github.com/veracrypt/VeraCrypt
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67 lines
2.5 KiB
C++
67 lines
2.5 KiB
C++
/*
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Derived from source code of TrueCrypt 7.1a, which is
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Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed
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by the TrueCrypt License 3.0.
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Modifications and additions to the original source code (contained in this file)
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and all other portions of this file are Copyright (c) 2013-2015 IDRIX
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and are governed by the Apache License 2.0 the full text of which is
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contained in the file License.txt included in VeraCrypt binary and source
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code distribution packages.
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*/
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#ifndef TC_HEADER_Encryption_EncryptionMode
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#define TC_HEADER_Encryption_EncryptionMode
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#include "Platform/Platform.h"
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#include "Common/Crypto.h"
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#include "Cipher.h"
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namespace VeraCrypt
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{
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class EncryptionMode;
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typedef list < shared_ptr <EncryptionMode> > EncryptionModeList;
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class EncryptionMode
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{
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public:
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virtual ~EncryptionMode ();
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virtual void Decrypt (byte *data, uint64 length) const = 0;
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virtual void DecryptSectors (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const;
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virtual void DecryptSectorsCurrentThread (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const = 0;
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virtual void Encrypt (byte *data, uint64 length) const = 0;
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virtual void EncryptSectors (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const;
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virtual void EncryptSectorsCurrentThread (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const = 0;
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static EncryptionModeList GetAvailableModes ();
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virtual const SecureBuffer &GetKey () const { throw NotApplicable (SRC_POS); }
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virtual size_t GetKeySize () const = 0;
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virtual wstring GetName () const = 0;
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virtual shared_ptr <EncryptionMode> GetNew () const = 0;
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virtual uint64 GetSectorOffset () const { return SectorOffset; }
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virtual bool IsKeySet () const { return KeySet; }
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virtual void SetKey (const ConstBufferPtr &key) = 0;
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virtual void SetCiphers (const CipherList &ciphers) { Ciphers = ciphers; }
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virtual void SetSectorOffset (int64 offset) { SectorOffset = offset; }
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protected:
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EncryptionMode ();
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virtual void ValidateState () const;
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void ValidateParameters (byte *data, uint64 length) const;
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virtual void ValidateParameters (byte *data, uint64 sectorCount, size_t sectorSize) const;
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static const size_t EncryptionDataUnitSize = ENCRYPTION_DATA_UNIT_SIZE;
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CipherList Ciphers;
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bool KeySet;
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uint64 SectorOffset;
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private:
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EncryptionMode (const EncryptionMode &);
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EncryptionMode &operator= (const EncryptionMode &);
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};
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}
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#endif // TC_HEADER_Encryption_EncryptionMode
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