THPDFCSCSignatureProvider.GetCertificateChain Method
function GetCertificateChain: THPDFCSCCertificateChain;Returns a defensive copy of the cached credential certificate chain as DER-encoded byte arrays
The chain is populated by RefreshCredentialInfo or by the first signing operation, and the array is empty until credential information has been loaded
Because each entry is an independent copy, callers can hand the result directly to the CMS certificate input without sharing storage with the provider's internal cache