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https://github.com/Xevion/easy7zip.git
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dddf507557
- added these variants: SHA3-256, SHA3-384, SHA3-512 - reordered also the hashing id's - added some notes about them in DOC/Hashes.txt Signed-off-by: Tino Reichardt <milky-7zip@mcmilk.de>
61 lines
1.0 KiB
C++
61 lines
1.0 KiB
C++
// CksumReg.cpp
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#include "StdAfx.h"
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#include "../../C/CpuArch.h"
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#include "../Common/MyCom.h"
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#include "../7zip/Common/RegisterCodec.h"
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#include "../7zip/Compress/BZip2Crc.h"
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class CCksumHasher:
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public IHasher,
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public CMyUnknownImp
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{
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CBZip2Crc _crc;
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UInt64 _size;
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Byte mtDummy[1 << 7];
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public:
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CCksumHasher()
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{
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_crc.Init(0);
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_size = 0;
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}
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MY_UNKNOWN_IMP1(IHasher)
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INTERFACE_IHasher(;)
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};
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STDMETHODIMP_(void) CCksumHasher::Init() throw()
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{
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_crc.Init(0);
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_size = 0;
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}
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STDMETHODIMP_(void) CCksumHasher::Update(const void *data, UInt32 size) throw()
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{
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_size += size;
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CBZip2Crc crc = _crc;
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for (UInt32 i = 0; i < size; i++)
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crc.UpdateByte(((const Byte *)data)[i]);
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_crc = crc;
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}
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STDMETHODIMP_(void) CCksumHasher::Final(Byte *digest) throw()
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{
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UInt64 size = _size;
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CBZip2Crc crc = _crc;
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while (size)
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{
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crc.UpdateByte((Byte)size);
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size >>= 8;
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}
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const UInt32 val = crc.GetDigest();
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SetUi32(digest, val);
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}
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REGISTER_HASHER(CCksumHasher, 0x202, "CKSUM", 4)
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