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-rw-r--r--Volume/EncryptionMode.h62
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diff --git a/Volume/EncryptionMode.h b/Volume/EncryptionMode.h
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+/*
+ Copyright (c) 2008 TrueCrypt Developers Association. All rights reserved.
+
+ Governed by the TrueCrypt License 3.0 the full text of which is contained in
+ the file License.txt included in TrueCrypt binary and source code distribution
+ packages.
+*/
+
+#ifndef TC_HEADER_Encryption_EncryptionMode
+#define TC_HEADER_Encryption_EncryptionMode
+
+#include "Platform/Platform.h"
+#include "Common/Crypto.h"
+#include "Cipher.h"
+
+namespace TrueCrypt
+{
+ class EncryptionMode;
+ typedef list < shared_ptr <EncryptionMode> > EncryptionModeList;
+
+ class EncryptionMode
+ {
+ public:
+ virtual ~EncryptionMode ();
+
+ virtual void Decrypt (byte *data, uint64 length) const = 0;
+ virtual void DecryptSectors (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const;
+ virtual void DecryptSectorsCurrentThread (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const = 0;
+ virtual void Encrypt (byte *data, uint64 length) const = 0;
+ virtual void EncryptSectors (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const;
+ virtual void EncryptSectorsCurrentThread (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const = 0;
+ static EncryptionModeList GetAvailableModes ();
+ virtual const SecureBuffer &GetKey () const { throw NotApplicable (SRC_POS); }
+ virtual size_t GetKeySize () const = 0;
+ virtual wstring GetName () const = 0;
+ virtual shared_ptr <EncryptionMode> GetNew () const = 0;
+ virtual uint64 GetSectorOffset () const { return SectorOffset; }
+ virtual bool IsKeySet () const { return KeySet; }
+ virtual void SetKey (const ConstBufferPtr &key) = 0;
+ virtual void SetCiphers (const CipherList &ciphers) { Ciphers = ciphers; }
+ virtual void SetSectorOffset (int64 offset) { SectorOffset = offset; }
+
+ protected:
+ EncryptionMode ();
+
+ virtual void ValidateState () const;
+ void ValidateParameters (byte *data, uint64 length) const;
+ virtual void ValidateParameters (byte *data, uint64 sectorCount, size_t sectorSize) const;
+
+ static const size_t EncryptionDataUnitSize = ENCRYPTION_DATA_UNIT_SIZE;
+
+ CipherList Ciphers;
+ bool KeySet;
+ uint64 SectorOffset;
+
+ private:
+ EncryptionMode (const EncryptionMode &);
+ EncryptionMode &operator= (const EncryptionMode &);
+ };
+}
+
+#endif // TC_HEADER_Encryption_EncryptionMode