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-rw-r--r--Volume/EncryptionAlgorithm.h93
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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_EncryptionAlgorithm
+#define TC_HEADER_Encryption_EncryptionAlgorithm
+
+#include "Platform/Platform.h"
+#include "Cipher.h"
+#include "EncryptionMode.h"
+
+namespace TrueCrypt
+{
+ class EncryptionAlgorithm;
+ typedef list < shared_ptr <EncryptionAlgorithm> > EncryptionAlgorithmList;
+
+ class EncryptionAlgorithm
+ {
+ public:
+ virtual ~EncryptionAlgorithm ();
+
+ virtual void Decrypt (byte *data, uint64 length) const;
+ virtual void Decrypt (const BufferPtr &data) const;
+ virtual void DecryptSectors (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const;
+ virtual void Encrypt (byte *data, uint64 length) const;
+ virtual void Encrypt (const BufferPtr &data) const;
+ virtual void EncryptSectors (byte *data, uint64 sectorIndex, uint64 sectorCount, size_t sectorSize) const;
+ static EncryptionAlgorithmList GetAvailableAlgorithms ();
+ virtual const CipherList &GetCiphers () const { return Ciphers; }
+ virtual shared_ptr <EncryptionAlgorithm> GetNew () const = 0;
+ virtual size_t GetMaxBlockSize () const;
+ virtual size_t GetMinBlockSize () const;
+ static size_t GetLargestKeySize (const EncryptionAlgorithmList &algorithms);
+ virtual size_t GetKeySize () const;
+ virtual shared_ptr <EncryptionMode> GetMode () const;
+ virtual wstring GetName () const;
+ bool IsDeprecated () const { return Deprecated; }
+ virtual bool IsModeSupported (const EncryptionMode &mode) const;
+ virtual bool IsModeSupported (const shared_ptr <EncryptionMode> mode) const;
+ virtual void SetKey (const ConstBufferPtr &key);
+ virtual void SetMode (shared_ptr <EncryptionMode> mode);
+
+ protected:
+ EncryptionAlgorithm ();
+
+ void ValidateState () const;
+
+ CipherList Ciphers;
+ bool Deprecated;
+ shared_ptr <EncryptionMode> Mode;
+ EncryptionModeList SupportedModes;
+
+ private:
+ EncryptionAlgorithm (const EncryptionAlgorithm &);
+ EncryptionAlgorithm &operator= (const EncryptionAlgorithm &);
+ };
+
+#define TC_ENCRYPTION_ALGORITHM(NAME) \
+ class NAME : public EncryptionAlgorithm \
+ { \
+ public: \
+ NAME (); \
+ virtual ~NAME () { } \
+\
+ virtual shared_ptr <EncryptionAlgorithm> GetNew () const { return shared_ptr <EncryptionAlgorithm> (new NAME()); } \
+\
+ private: \
+ NAME (const NAME &); \
+ NAME &operator= (const NAME &); \
+ }
+
+ TC_ENCRYPTION_ALGORITHM (AES);
+ TC_ENCRYPTION_ALGORITHM (AESBlowfish);
+ TC_ENCRYPTION_ALGORITHM (AESBlowfishSerpent);
+ TC_ENCRYPTION_ALGORITHM (AESTwofish);
+ TC_ENCRYPTION_ALGORITHM (AESTwofishSerpent);
+ TC_ENCRYPTION_ALGORITHM (Blowfish);
+ TC_ENCRYPTION_ALGORITHM (Cast5);
+ TC_ENCRYPTION_ALGORITHM (Serpent);
+ TC_ENCRYPTION_ALGORITHM (SerpentAES);
+ TC_ENCRYPTION_ALGORITHM (TripleDES);
+ TC_ENCRYPTION_ALGORITHM (Twofish);
+ TC_ENCRYPTION_ALGORITHM (TwofishSerpent);
+ TC_ENCRYPTION_ALGORITHM (SerpentTwofishAES);
+
+#undef TC_ENCRYPTION_ALGORITHM
+}
+
+#endif // TC_HEADER_Encryption_EncryptionAlgorithm