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Annotation of truecrypt/volume/encryptionmodecbc.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  Copyright (c) 2008 TrueCrypt Foundation. All rights reserved.
                      3: 
                      4:  Governed by the TrueCrypt License 2.4 the full text of which is contained
                      5:  in the file License.txt included in TrueCrypt binary and source code
                      6:  distribution packages.
                      7: */
                      8: 
                      9: #ifndef TC_HEADER_Encryption_EncryptionModeCBC
                     10: #define TC_HEADER_Encryption_EncryptionModeCBC
                     11: 
                     12: #include "Platform/Platform.h"
                     13: #include "EncryptionMode.h"
                     14: 
                     15: namespace TrueCrypt
                     16: {
                     17:        class EncryptionModeCBC : public EncryptionMode
                     18:        {
                     19:        public:
                     20:                EncryptionModeCBC () { }
                     21:                virtual ~EncryptionModeCBC () { }
                     22: 
                     23:                virtual void Decrypt (byte *data, uint64 length) const;
                     24:                virtual void DecryptSectors (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const;
                     25:                virtual void Encrypt (byte *data, uint64 length) const;
                     26:                virtual void EncryptSectors (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const;
                     27:                virtual size_t GetKeySize () const { return 32; };
                     28:                virtual wstring GetName () const { return L"CBC"; };
                     29:                virtual shared_ptr <EncryptionMode> GetNew () const { return shared_ptr <EncryptionMode> (new EncryptionModeCBC); }
                     30:                virtual void SetKey (const ConstBufferPtr &key);
                     31: 
                     32:        protected:
                     33:                void DecryptBuffer (byte *data, uint64 length, const CipherList &ciphers, const uint32 *iv, const uint32 *whitening) const;
                     34:                void EncryptBuffer (byte *data, uint64 length, const CipherList &ciphers, const uint32 *iv, const uint32 *whitening) const;
                     35:                void InitSectorIVAndWhitening (uint64 sectorIndex, size_t blockSize, const uint64 *ivSeed, uint32 *iv, uint32 *whitening) const;
                     36:                bool IsOuterCBC (const CipherList &ciphers) const;
                     37: 
                     38:                SecureBuffer IV;
                     39:                static const int WhiteningIVOffset = 8;
                     40: 
                     41:        private:
                     42:                EncryptionModeCBC (const EncryptionModeCBC &);
                     43:                EncryptionModeCBC &operator= (const EncryptionModeCBC &);
                     44:        };
                     45: }
                     46: 
                     47: #endif // TC_HEADER_Encryption_EncryptionModeCBC

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