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// Sha256Reg.cpp
#include "StdAfx.h"
#include "../../C/Sha256.h"
#include "../Common/MyBuffer2.h"
#include "../Common/MyCom.h"
#include "../7zip/Common/RegisterCodec.h"
Z7_CLASS_IMP_COM_2(
CSha256Hasher
, IHasher
, ICompressSetCoderProperties
)
CAlignedBuffer1 _buf;
public:
Byte _mtDummy[1 << 7];
CSha256 *Sha() { return (CSha256 *)(void *)(Byte *)_buf; }
public:
CSha256Hasher():
_buf(sizeof(CSha256))
{
Sha256_SetFunction(Sha(), 0);
Sha256_InitState(Sha());
}
};
Z7_COM7F_IMF2(void, CSha256Hasher::Init())
{
Sha256_InitState(Sha());
}
Z7_COM7F_IMF2(void, CSha256Hasher::Update(const void *data, UInt32 size))
{
Sha256_Update(Sha(), (const Byte *)data, size);
}
Z7_COM7F_IMF2(void, CSha256Hasher::Final(Byte *digest))
{
Sha256_Final(Sha(), digest);
}
Z7_COM7F_IMF(CSha256Hasher::SetCoderProperties(const PROPID *propIDs, const PROPVARIANT *coderProps, UInt32 numProps))
{
unsigned algo = 0;
for (UInt32 i = 0; i < numProps; i++)
{
if (propIDs[i] == NCoderPropID::kDefaultProp)
{
const PROPVARIANT &prop = coderProps[i];
if (prop.vt != VT_UI4)
return E_INVALIDARG;
if (prop.ulVal > 2)
return E_NOTIMPL;
algo = (unsigned)prop.ulVal;
}
}
if (!Sha256_SetFunction(Sha(), algo))
return E_NOTIMPL;
return S_OK;
}
REGISTER_HASHER(CSha256Hasher, 0xA, "SHA256", SHA256_DIGEST_SIZE)
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