1 files changed, 50 insertions, 0 deletions
diff --git a/src/Volume/EncryptionModeLRW.h b/src/Volume/EncryptionModeLRW.h
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+++ b/src/Volume/EncryptionModeLRW.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_EncryptionModeLRW
+#define TC_HEADER_Encryption_EncryptionModeLRW
+
+#include "Platform/Platform.h"
+#include "EncryptionMode.h"
+
+namespace TrueCrypt
+{
+	class EncryptionModeLRW : public EncryptionMode
+	{
+	public:
+		EncryptionModeLRW () { }
+		virtual ~EncryptionModeLRW () { }
+
+		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 Key; }
+		virtual size_t GetKeySize () const { return 16; };
+		virtual wstring GetName () const { return L"LRW"; };
+		virtual shared_ptr <EncryptionMode> GetNew () const { return shared_ptr <EncryptionMode> (new EncryptionModeLRW); }
+		virtual void SetKey (const ConstBufferPtr &key);
+
+	protected:
+		void DecryptBuffer (byte *plainText, uint64 length, uint64 blockIndex) const;
+		void EncryptBuffer (byte *plainText, uint64 length, uint64 blockIndex) const;
+		void IncrementBlockIndex (byte *index) const;
+		uint64 SectorToBlockIndex (uint64 sectorIndex) const;
+		void Xor64 (uint64 *a, const uint64 *b) const;
+		void Xor128 (uint64 *a, const uint64 *b) const;
+
+		SecureBuffer GfContext;
+		SecureBuffer Key;
+
+	private:
+		EncryptionModeLRW (const EncryptionModeLRW &);
+		EncryptionModeLRW &operator= (const EncryptionModeLRW &);
+	};
+}
+
+#endif // TC_HEADER_Encryption_EncryptionModeLRW