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Diffstat (limited to 'Volume/EncryptionModeCBC.h')
| -rw-r--r-- | Volume/EncryptionModeCBC.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/Volume/EncryptionModeCBC.h b/Volume/EncryptionModeCBC.h new file mode 100644 index 0000000..3e1094a --- /dev/null +++ b/Volume/EncryptionModeCBC.h @@ -0,0 +1,47 @@ +/* + 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_EncryptionModeCBC +#define TC_HEADER_Encryption_EncryptionModeCBC + +#include "Platform/Platform.h" +#include "EncryptionMode.h" + +namespace TrueCrypt +{ + class EncryptionModeCBC : public EncryptionMode + { + public: + EncryptionModeCBC () { } + virtual ~EncryptionModeCBC () { } + + 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 size_t GetKeySize () const { return 32; }; + virtual wstring GetName () const { return L"CBC"; }; + virtual shared_ptr <EncryptionMode> GetNew () const { return shared_ptr <EncryptionMode> (new EncryptionModeCBC); } + virtual void SetKey (const ConstBufferPtr &key); + + protected: + void DecryptBuffer (byte *data, uint64 length, const CipherList &ciphers, const uint32 *iv, const uint32 *whitening) const; + void EncryptBuffer (byte *data, uint64 length, const CipherList &ciphers, const uint32 *iv, const uint32 *whitening) const; + void InitSectorIVAndWhitening (uint64 sectorIndex, size_t blockSize, const uint64 *ivSeed, uint32 *iv, uint32 *whitening) const; + bool IsOuterCBC (const CipherList &ciphers) const; + + SecureBuffer IV; + static const int WhiteningIVOffset = 8; + + private: + EncryptionModeCBC (const EncryptionModeCBC &); + EncryptionModeCBC &operator= (const EncryptionModeCBC &); + }; +} + +#endif // TC_HEADER_Encryption_EncryptionModeCBC |