This sample shows how to add a digital signature to an already signed PDF document.
Docotic.Pdf library can sign PDFs without invalidating signatures already applied to the file. It does not matter who and how signed the document before.
This sample shows how to add a digital signature to an already signed PDF document.
Docotic.Pdf library can sign PDFs without invalidating signatures already applied to the file. It does not matter who and how signed the document before.