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Annotation of truecrypt/volume/crc32.h, 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: #ifndef TC_HEADER_Encryption_Crc32
        !            10: #define TC_HEADER_Encryption_Crc32
        !            11: 
        !            12: #include "Platform/Platform.h"
        !            13: #include "Common/Crc.h"
        !            14: 
        !            15: namespace TrueCrypt
        !            16: {
        !            17:        class Crc32
        !            18:        {
        !            19:        public:
        !            20:                Crc32 () : CrcValue (0xffffFFFF) { };
        !            21:                virtual ~Crc32 () { };
        !            22: 
        !            23:                uint32 Get () const { return CrcValue ^ 0xffffFFFF; }
        !            24: 
        !            25:                uint32 Process (byte data)
        !            26:                {
        !            27:                        return CrcValue = crc_32_tab[(byte) (CrcValue ^ data)] ^ (CrcValue >> 8);
        !            28:                }
        !            29: 
        !            30:                static uint32 ProcessBuffer (const ConstBufferPtr &buffer)
        !            31:                {
        !            32:                        return ::GetCrc32 (const_cast<byte *> (buffer.Get()), static_cast<int> (buffer.Size()));
        !            33:                }
        !            34: 
        !            35:        protected:
        !            36:                uint32 CrcValue;
        !            37: 
        !            38:        private:
        !            39:                Crc32 (const Crc32 &);
        !            40:                Crc32 &operator= (const Crc32 &);
        !            41:        };
        !            42: }
        !            43: 
        !            44: #endif // TC_HEADER_Encryption_Crc32

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