Add timestamp token from external service

[bjovanovic]

Hi MichaelL,

Can you please confirm if you are using WebViewer? If so, which version (I saw Product Version: latest, just need to confirm).

You might want to check the following forum posts:

How to add unsignedAttrs to a custom signature?

Question: When signing our digest of signedAttrs our Signature Provider returns a Timestamp Token (since they are also our Time Stamp Authority). According to the RFC-5652 and RFC-3161 standards the TimeStamp token must be added as an Unsigned Attribute in the unsignedAttrs field of the SignerInfo. How can we accomplish this? Answer: You do not need to add generic unsigned attributes in order to embed a timestamp token. Please note that generally speaking, unsigned attributes can and should…

and

How do I create and sign a digital signature with LTV?

Question: I want to be able to add a Digital Signature to a PDF and sign it using Time Stamp, using a Time Stamp Authority (TSA) server, and enable Long Term Validation (LTV). How can I do that? Answer: The attached C# code shows how to accomplish this. DigitalSignaturesTest.cs.txt (5.6 KB)