The certificate (PEM/base64 encoded).
When SigningCertEncoded is set, a search is initiated in the current SigningCertStore for the private key of the certificate. If the key is found, SigningCertSubject is updated to reflect the full subject of the selected certificate, otherwise SigningCertSubject is set to empty string.
To read or write binary data to the property, a Variant (Byte Array) version is provided in .SigningCertEncodedB.
This property is not available at design time.