diff options
author | Jedidiah Barber <contact@jedbarber.id.au> | 2021-07-14 11:27:03 +1200 |
---|---|---|
committer | Jedidiah Barber <contact@jedbarber.id.au> | 2021-07-14 11:27:03 +1200 |
commit | 3cb7fdea950dd2d0377f0d9ad8a88fcb7c48b842 (patch) | |
tree | cedbfc08a6bf0bd8cb6ec6c8d8dd94a4e715439b /Volume/EncryptionModeLRW.h |
Diffstat (limited to 'Volume/EncryptionModeLRW.h')
-rw-r--r-- | Volume/EncryptionModeLRW.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/Volume/EncryptionModeLRW.h b/Volume/EncryptionModeLRW.h new file mode 100644 index 0000000..97a8528 --- /dev/null +++ b/Volume/EncryptionModeLRW.h @@ -0,0 +1,50 @@ +/* + 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 |