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Example of Digital Signature in ASP.NET Core PDF Control

This sample demonstrates how a PDF document can be secured with certificates and signed with either standard or author signatures. Now added the support for Elliptic Curve Digital Signature Algorithm (ECDSA) to sign the PDF document.
DEMO
SOURCE
Click the button to view a PDF document generated by Essential PDF. Please note that Adobe Reader or its equivalent is required to view the resultant document.

Signature Settings


Sign new PDF document


Sign existing PDF document
Source

Certificate

Password
Reason
Contact
Location
It is also possible to digitally sign with timestamp. More information about the digital signature and timestamp can be found in this documentation section.