I am using Reader DC to add digital signatures to PDFs. I have activated the option that verification information is added to the PDF at the time point of signing. However, when I chose Add verification information from the menu linked to the signature on the left of the application, the PDF still further increases in size. My understanding is that the option and the manual function do the same. Am I wrong?
How can I check if all verification information has been added to a signature to assure long term validity?
I think my problem is a different one or I misunderstood your answer.
My Reader is configured to use the CAdES equivalent signature format and to include verification information when saving a signed document.
When I create a new signature the extended signature properties dialog says it is "PAdES Level B-T" (note that I have German Reader so translation may vary slightly). Shouldn't it be immediately Level "B-LT", because the verification information was said to be added to the PDF?
Now if I reopen the same signed document and select add validation information from the signature menu and save the document again:
it becomes "B-LT".
Why isn't the signature immediately level B-LT after its initial creation?