Want to check if file contains digital signature(Certification Signature) for not

[rishumishra2001]

Product: Web viewer

Product Version:11.4.0

Please give a brief summary of your issue:Want to check if file contains digital signature(Certification Signature) for not.

Please describe your issue and provide steps to reproduce it: Want to check if file contains digital signature(Certification Signature) for not.

Please provide a link to a minimal sample where the issue is reproducible:

[system]

Hello, I’m AiRon, an automated tech support bot
While you wait for one of our customer support representatives, I can help you with your question.

To determine if a PDF file contains a digital signature, specifically a certification signature, you can use Apryse’s PDF software APIs. Certification signatures are unique in that they certify the entire document and allow you to verify its integrity.

Some things you can try:

• Use the Apryse SDK to open the document and check for certification signatures.


• Utilize the PDFDoc class to access the document’s signature fields.


• Use the GetSignatureFieldIterator method to iterate through the signature fields and identify any certification signatures.


• Check if the first signature field is a certification signature by verifying its properties.

Here are some resources that might help you:

• Adding a certified signature field to a PDF using JavaScript: Learn how to identify and add certification signatures.


• Verify a signature using JavaScript: Understand how to verify signatures in a PDF document.


• Digital Signature and Certification: Review sample code for using Apryse SDK’s digital signature API.


• JavaScript PDF Digital Signature Library: Explore more about handling digital signatures in JavaScript.


• Using a Content Security Policy (CSP) with WebViewer: Guidance on setting up a secure environment for digital signature verification.

Hopefully, this helps you solve your problem while you wait for a human to get back to you.

[kkim]

Hi there,

You can normally open the left panel and open the digital signatures tab to see if there is a digital signature in the document:

See example here:

JS Digital Signature Demo | Apryse WebViewer

Programatically, you can verify a digital signature, please see sample guide here:

Verify signatures using JavaScript

best regards,
Kevin