IWSDSignaturePropery::GetKeyInfo method

Gets the subject key ID of the certificate for a signed message.

Syntax

c++

HRESULT GetKeyInfo(
  [out]     BYTE  *pbKeyInfo,
  [in, out] DWORD *pdwKeyInfoSize
);

pbKeyInfo [out]
A pointer to a buffer that will be filled with the subject key ID for the certificate that signed the message.
pdwKeyInfoSize [in, out]
On input, the size of pbKeyInfo in bytes. On output, pdwKeyInfoSize contains the actual size of the buffer that was written.

Possible return values include, but are not limited to, the following.

Return code	Description
S_OK	Method succeeded.
E_NOTAVAIL	The message is not signed.
HRESULT_FROM_WIN32(ERROR_MORE_DATA)	pbKeyInfo is not large enough to hold the information. pdwKeyInfoSize now specifies the required buffer size.

The subject key ID is a hash of the certificate's public key and is used to uniquely identify a certificate.

If NULL is passed to pbKeyInfo, then GetKeyInfo will return the size of the buffer to allocate in the pdwKeyInfoSize parameter.

Minimum supported client	Windows 7 [desktop apps only]
Minimum supported server	Windows Server 2008 R2 [desktop apps only]
Header	Wsdbase.h (include Wsdapi.h)
IDL	Wsdbase.idl
DLL	Wsdapi.dll