IX509CertificateRequestCmc::get_NullSigned method (certenroll.h)
The NullSigned property retrieves a Boolean value that specifies whether the primary signature on the certificate request is null-signed.
This property is read-only.
HRESULT get_NullSigned( VARIANT_BOOL *pValue );
A null-signed certificate request is not really signed. That is, the request can be digested by using a digest algorithm such as SHA-1, but it is not encrypted with a public key algorithm such as RSA. This can be used when a private key is not available as is often the case when certification authorities are being cross-certified.
You must initialize the CMC request object before calling this property. For more information, see the following topics:
|Minimum supported client||Windows Vista [desktop apps only]|
|Minimum supported server||Windows Server 2008 [desktop apps only]|