update Method

Updates a signature.

Syntax

def update() -> None: ...

Remarks

PDF signature may be updated from time to time by embedding newer/missing revocation information. The update approach is typically used to extend validity of an LTV signature.

Updating is typically accompanied with a document timestamping operation. Set timestamp_server to have the class obtain and embed a document timestamp for you.

Before calling this method, provide the signed document via input_file (or input_stream) property. The updated document will be saved to output_file (or output_stream).