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IX509SignatureInformation::get_HashAlgorithm method (certenroll.h)

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The HashAlgorithm property specifies and retrieves an object identifier (OID) for the hashing algorithm used in the GetSignatureAlgorithm method.

This property is read/write.

Syntax

HRESULT get_HashAlgorithm(
  IObjectId **ppValue
);

Parameters

ppValue

Return value

None

Remarks

You must set this property before calling the GetSignatureAlgorithm method. You must also set the PublicKeyAlgorithm property unless you are retrieving a signature algorithm for a null-signed certificate request. You can also set the NullSigned, AlternateSignatureAlgorithm, and Parameters properties.

The HashAlgorithm property validates whether the OID you specify represents a hashing algorithm. If the OID is valid, the property also clears the signature property cache.

Requirements

Requirement Value
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 [desktop apps only]
Target Platform Windows
Header certenroll.h
DLL CertEnroll.dll

See also

IX509SignatureInformation