// 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)