From 7ffce028d04a6b13ef762e2b89c34b688e8ca59d Mon Sep 17 00:00:00 2001 From: Mounir IDRASSI Date: Sat, 31 May 2014 18:44:53 +0200 Subject: Add TrueCrypt 7.1a MacOSX/Linux specific source files. --- src/Volume/Crc32.h | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 src/Volume/Crc32.h (limited to 'src/Volume/Crc32.h') diff --git a/src/Volume/Crc32.h b/src/Volume/Crc32.h new file mode 100644 index 00000000..d4392275 --- /dev/null +++ b/src/Volume/Crc32.h @@ -0,0 +1,44 @@ +/* + 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_Crc32 +#define TC_HEADER_Encryption_Crc32 + +#include "Platform/Platform.h" +#include "Common/Crc.h" + +namespace TrueCrypt +{ + class Crc32 + { + public: + Crc32 () : CrcValue (0xffffFFFF) { }; + virtual ~Crc32 () { }; + + uint32 Get () const { return CrcValue ^ 0xffffFFFF; } + + uint32 Process (byte data) + { + return CrcValue = crc_32_tab[(byte) (CrcValue ^ data)] ^ (CrcValue >> 8); + } + + static uint32 ProcessBuffer (const ConstBufferPtr &buffer) + { + return ::GetCrc32 (const_cast (buffer.Get()), static_cast (buffer.Size())); + } + + protected: + uint32 CrcValue; + + private: + Crc32 (const Crc32 &); + Crc32 &operator= (const Crc32 &); + }; +} + +#endif // TC_HEADER_Encryption_Crc32 -- cgit v1.2.3