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DocMan_8247
Participant
September 30, 2024
Question

Green DYNAMIC check mark to pdf signature

  • September 30, 2024
  • 2 replies
  • 2277 views

How to show green dynamic check mark on digitally signed PDF?
I know there is usual answer to this question is to 'Add to Trusted Certificates'. But this does not give green dynamic check mark to the signature. The signature gets verified, but no check mark at all.
There are some pdf files which gets orange question mark before adding it into trusted certificates and becomes green check mark when added to trusted certificates. This dynamic behavior of the signature I am expecting.

I am attaching both the sample pdfs here where, dynamic signature which shows green check mark is given and in another, my own sample signed pdf where even after adding it into trusted certificates, NO green check mark shows.

2 replies

MikelKlink
MikelKlink
Participating Frequently
October 21, 2024

The green, in-document checkmark as indication of signature validity has been deprecated since 2008 (with the release of Adobe Acrobat 9) and forbidden since 2017 (in ISO 32000-2), see this stack overflow article for details.

 

Unfortunately Acrobat has not yet caught up with the specification and still shows such in-document signature state indicators for legacy signature appearances. This surely will be fixed any decade now.

Meenakshi Negi
Community Manager
Meenakshi NegiCommunity Manager
Community Manager
October 1, 2024

Hi DocMan_8247,

 

Thank you for reaching out.

 

We did check both files and were able to validate both signatures. However, as you mentioned, the check mark appears only on one. However, if you check the right-hand panel, you can see the signature is validated. For more information on validating the signature, refer to the following help document: https://adobe.ly/4evfeY4. 

 

The difference might appear due to how the document was signed. Could you please confirm how the first document that shows the green check mark was signed? Did the signer use Adobe or alternate applications to sign the document?

We will also check with the team for more information on this behavior.

 

Thanks,

Meenakshi

 

 

 

D
DocMan_8247Author
Participant
October 3, 2024

Thank you Meenakshi for the reply. 

The first document is found on public internet. (to be more specific, it's sample document for freetsa timestamped pdf). The similer pdf can be found as the India's Aadhar PDF ducument. So, I can't comment how the pdf is signed. 

 

Generally, very few people refers the checkmarks shown in sidebar of the Acrobat reader. Most of them will refer only at the signature itself. Further, many of them might be using other pdf reader which may not have that sidebar. 

 

There must be something which I am missing that will trigger intended dynamic behaviour of the signature. Is there anything in Acrobat's KBs (pdf standard, perticularly) where this point is documented? 

 

    D
    DocMan_8247Author
    Participant
    October 3, 2024

    there is another example of dynamic signature. The signed pdf generated by Tally software. 

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