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Annotation of truecrypt/volume/encryptionmode.cpp, revision 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: #include "EncryptionMode.h"
        !            10: #include "EncryptionModeCBC.h"
        !            11: #include "EncryptionModeLRW.h"
        !            12: #include "EncryptionModeXTS.h"
        !            13: 
        !            14: namespace TrueCrypt
        !            15: {
        !            16:        EncryptionMode::EncryptionMode () : KeySet (false), SectorOffset (0)
        !            17:        {
        !            18:        }
        !            19: 
        !            20:        EncryptionMode::~EncryptionMode ()
        !            21:        {
        !            22:        }
        !            23: 
        !            24:        EncryptionModeList EncryptionMode::GetAvailableModes ()
        !            25:        {
        !            26:                EncryptionModeList l;
        !            27: 
        !            28:                l.push_back (shared_ptr <EncryptionMode> (new EncryptionModeXTS ()));
        !            29:                l.push_back (shared_ptr <EncryptionMode> (new EncryptionModeLRW ()));
        !            30:                l.push_back (shared_ptr <EncryptionMode> (new EncryptionModeCBC ()));
        !            31: 
        !            32:                return l;
        !            33:        }
        !            34: 
        !            35:        void EncryptionMode::ValidateState () const
        !            36:        {
        !            37:                if (!KeySet || Ciphers.size() < 1)
        !            38:                        throw NotInitialized (SRC_POS);
        !            39:        }
        !            40: 
        !            41:        void EncryptionMode::ValidateParameters (byte *data, uint64 length) const
        !            42:        {
        !            43:                if ((Ciphers.size() > 0 && (length % Ciphers.front()->GetBlockSize()) != 0))
        !            44:                        throw ParameterIncorrect (SRC_POS);
        !            45:        }
        !            46: 
        !            47:        void EncryptionMode::ValidateParameters (byte *data, uint64 sectorCount, size_t sectorSize) const
        !            48:        {
        !            49:                if (sectorCount == 0 || sectorSize == 0 || (sectorSize % EncryptionDataUnitSize) != 0)
        !            50:                        throw ParameterIncorrect (SRC_POS);
        !            51:        }
        !            52: }

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