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Pan5E1E
Participant
June 7, 2022
Question

Where to download Digital Signature Appearances specification?

  • June 7, 2022
  • 1 reply
  • 756 views

Hi,

I can't find Adobe Systems Incorporated (October 2006): Digital Signature Appearances, which should be at www.adobe.com/devnet/acrobat/pdfs/PPKAppearances.pdf
This link no longer appears to be valid. Does anyone please have this document and could share it somewhere?

 

Thank you very much.

Jirka

    This topic has been closed for replies.

    1 reply

    MikelKlink
    MikelKlink
    Participating Frequently
    June 7, 2022

    Consider using the wayback machine:

    https://web.archive.org/web/20090619222719/http://www.adobe.com/devnet/acrobat/pdfs/PPKAppearances.pdf

    Be aware, though, the document is of interest for hardly anything but historical reasons.

     

    P
    Pan5E1EAuthor
    Participant
    June 8, 2022

    Thanks Mikel.

    What do you mean by "the document is of interest for hardly anything but historical reasons" ? It means this specification of signature appearance is not valid anymore? I created a signed document in adobe pro and the structure inside of the pdf looks exactly how it is described in "PPKAppearances.pdf".

    MikelKlink
    MikelKlink
    Participating Frequently
    June 8, 2022

    The appearance structure explained in that document indeed is what Adobe Acrobat currently still creates. But it is neither required in general for signature appearances nor is Adobe required to keep using it.

    Thus, appearances generated by other software often are constructed differently, and Adobe Acrobat may start generating appearances differently in the next update.

    That why it's foremost of historical interest. 

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