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| author | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2014-05-31 18:44:53 +0200 |
|---|---|---|
| committer | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2014-11-08 23:18:59 +0100 |
| commit | 7ffce028d04a6b13ef762e2b89c34b688e8ca59d (patch) | |
| tree | eefedb6e94de5b26fa963675969490c641c29077 /src/Volume/Crc32.h | |
| parent | 97011f179cfd3dcd12446ef4ccb6964c8e52c3db (diff) | |
| download | VeraCrypt-7ffce028d04a6b13ef762e2b89c34b688e8ca59d.tar.gz VeraCrypt-7ffce028d04a6b13ef762e2b89c34b688e8ca59d.zip | |
Add TrueCrypt 7.1a MacOSX/Linux specific source files.
Diffstat (limited to 'src/Volume/Crc32.h')
| -rw-r--r-- | src/Volume/Crc32.h | 44 |
1 files changed, 44 insertions, 0 deletions
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<byte *> (buffer.Get()), static_cast<int> (buffer.Size())); + } + + protected: + uint32 CrcValue; + + private: + Crc32 (const Crc32 &); + Crc32 &operator= (const Crc32 &); + }; +} + +#endif // TC_HEADER_Encryption_Crc32 |