cmsGetSigDataDigest
Extract the message digest from a signed-data CMS object file and verify the signature.
Syntax
[VBA]
Public Function cmsGetSigDataDigest ( _
szFileIn As String, _
Optional szCertFile As String = "", _
Optional nOptions As Long = 0 _
) As String
Parameters
- szFileIn
- Name of signed-data CMS object file or the data as a base64 or PEM string.
- szCertFile
- An (optional) X.509 certificate file to be used to identify the signer.
- nOptions
- For future use.
Return Value
String: Hash value in hex format or an empty string on error.
Remarks
If no certificate is given, it will use the first valid SignerInfo and certificate pair it finds in the SignedData.
RSASSA-PKCS1V1_5 only.