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Example of Digital Signature in ASP.NET Core PDF Library

This sample demonstrates how to digitally sign the PDF document with the PFX certificate file. It is possible to digitally sign with X509 certificates such as .pfx files with private keys and support for Hardware Security Module (HSM), Online Certificate Status Protocol (OCSP), Certificate Revocation List (CRL), and Windows Certificate Store to offer authenticity and integrity.

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

Cryptographic Standard: :

Digest Algorithm: :

Sign new PDF document

Standard Type: :

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.