ExternalSignatureCallback

16 Dec 20251 minute to read

A callback function used for external signing of a PDF document with extended options.
If public certificates are provided before signing, data will be a 256-byte hash
that should be signed using the certificate’s private key.
If no public certificates are provided, data will be the full PDF content,
and the function should compute the hash using the given algorithm and standard.

Paramter Name	Type
data	Uint8Array
options	Object