1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
// Sha1Reg.cpp
#include "StdAfx.h"
#include "../../C/Sha1.h"
#include "../Common/MyBuffer2.h"
#include "../Common/MyCom.h"
#include "../7zip/Common/RegisterCodec.h"
class CSha1Hasher:
public IHasher,
public ICompressSetCoderProperties,
public CMyUnknownImp
{
CAlignedBuffer _buf;
Byte mtDummy[1 << 7];
CSha1 *Sha() { return (CSha1 *)(void *)(Byte *)_buf; }
public:
CSha1Hasher():
_buf(sizeof(CSha1))
{
Sha1_SetFunction(Sha(), 0);
Sha1_InitState(Sha());
}
MY_UNKNOWN_IMP2(IHasher, ICompressSetCoderProperties)
INTERFACE_IHasher(;)
STDMETHOD(SetCoderProperties)(const PROPID *propIDs, const PROPVARIANT *props, UInt32 numProps);
};
STDMETHODIMP_(void) CSha1Hasher::Init() throw()
{
Sha1_InitState(Sha());
}
STDMETHODIMP_(void) CSha1Hasher::Update(const void *data, UInt32 size) throw()
{
Sha1_Update(Sha(), (const Byte *)data, size);
}
STDMETHODIMP_(void) CSha1Hasher::Final(Byte *digest) throw()
{
Sha1_Final(Sha(), digest);
}
STDMETHODIMP CSha1Hasher::SetCoderProperties(const PROPID *propIDs, const PROPVARIANT *coderProps, UInt32 numProps)
{
unsigned algo = 0;
for (UInt32 i = 0; i < numProps; i++)
{
const PROPVARIANT &prop = coderProps[i];
if (propIDs[i] == NCoderPropID::kDefaultProp)
{
if (prop.vt != VT_UI4)
return E_INVALIDARG;
if (prop.ulVal > 2)
return E_NOTIMPL;
algo = (unsigned)prop.ulVal;
}
}
if (!Sha1_SetFunction(Sha(), algo))
return E_NOTIMPL;
return S_OK;
}
REGISTER_HASHER(CSha1Hasher, 0x201, "SHA1", SHA1_DIGEST_SIZE)
|
