VeraCrypt
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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_Volume_EncryptionModeXTS
+#define TC_HEADER_Volume_EncryptionModeXTS
+
+#include "Platform/Platform.h"
+#include "EncryptionMode.h"
+
+namespace TrueCrypt
+{
+ class EncryptionModeXTS : public EncryptionMode
+ {
+ public:
+ EncryptionModeXTS () { }
+ virtual ~EncryptionModeXTS () { }
+
+ virtual void Decrypt (byte *data, uint64 length) const;
+ virtual void DecryptSectorsCurrentThread (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const;
+ virtual void Encrypt (byte *data, uint64 length) const;
+ virtual void EncryptSectorsCurrentThread (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const;
+ virtual const SecureBuffer &GetKey () const { return SecondaryKey; }
+ virtual size_t GetKeySize () const;
+ virtual wstring GetName () const { return L"XTS"; };
+ virtual shared_ptr <EncryptionMode> GetNew () const { return shared_ptr <EncryptionMode> (new EncryptionModeXTS); }
+ virtual void SetCiphers (const CipherList &ciphers);
+ virtual void SetKey (const ConstBufferPtr &key);
+
+ protected:
+ void DecryptBuffer (byte *data, uint64 length, uint64 startDataUnitNo) const;
+ void DecryptBufferXTS (const Cipher &cipher, const Cipher &secondaryCipher, byte *buffer, uint64 length, uint64 startDataUnitNo, unsigned int startCipherBlockNo) const;
+ void EncryptBuffer (byte *data, uint64 length, uint64 startDataUnitNo) const;
+ void EncryptBufferXTS (const Cipher &cipher, const Cipher &secondaryCipher, byte *buffer, uint64 length, uint64 startDataUnitNo, unsigned int startCipherBlockNo) const;
+ void SetSecondaryCipherKeys ();
+
+ SecureBuffer SecondaryKey;
+ CipherList SecondaryCiphers;
+
+ private:
+ EncryptionModeXTS (const EncryptionModeXTS &);
+ EncryptionModeXTS &operator= (const EncryptionModeXTS &);
+ };
+}
+
+#endif // TC_HEADER_Volume_EncryptionModeXTS