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https://github.com/veracrypt/VeraCrypt.git
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51 lines
1.8 KiB
C++
51 lines
1.8 KiB
C++
/*
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Copyright (c) 2008 TrueCrypt Developers Association. All rights reserved.
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Governed by the TrueCrypt License 3.0 the full text of which is contained in
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the file License.txt included in TrueCrypt binary and source code distribution
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packages.
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*/
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#ifndef TC_HEADER_Encryption_EncryptionModeLRW
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#define TC_HEADER_Encryption_EncryptionModeLRW
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#include "Platform/Platform.h"
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#include "EncryptionMode.h"
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namespace VeraCrypt
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{
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class EncryptionModeLRW : public EncryptionMode
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{
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public:
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EncryptionModeLRW () { }
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virtual ~EncryptionModeLRW () { }
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virtual void Decrypt (byte *data, uint64 length) const;
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virtual void DecryptSectorsCurrentThread (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const;
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virtual void Encrypt (byte *data, uint64 length) const;
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virtual void EncryptSectorsCurrentThread (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const;
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virtual const SecureBuffer &GetKey () const { return Key; }
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virtual size_t GetKeySize () const { return 16; };
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virtual wstring GetName () const { return L"LRW"; };
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virtual shared_ptr <EncryptionMode> GetNew () const { return shared_ptr <EncryptionMode> (new EncryptionModeLRW); }
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virtual void SetKey (const ConstBufferPtr &key);
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protected:
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void DecryptBuffer (byte *plainText, uint64 length, uint64 blockIndex) const;
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void EncryptBuffer (byte *plainText, uint64 length, uint64 blockIndex) const;
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void IncrementBlockIndex (byte *index) const;
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uint64 SectorToBlockIndex (uint64 sectorIndex) const;
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void Xor64 (uint64 *a, const uint64 *b) const;
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void Xor128 (uint64 *a, const uint64 *b) const;
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SecureBuffer GfContext;
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SecureBuffer Key;
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private:
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EncryptionModeLRW (const EncryptionModeLRW &);
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EncryptionModeLRW &operator= (const EncryptionModeLRW &);
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};
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}
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#endif // TC_HEADER_Encryption_EncryptionModeLRW
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