Acrobat slow opening files with Digital IDs

hi! I was hoping others were having this issue. I have a client that has over a dozen Digital ID Signatures stored on our network drive.
When she tries to open a file with multiple Digital ID Signatures, Acrobat takes forever verifying the Signatures. I can disable the security end, but that's not an option because of the people we are sending these files to.
Is there anyway to speed up the performance? Or will they just have to accept it?
Thanks for everyone's time.
Alvin

Hi Alvin,
Sadly, there's not a whole lot that can be done to mitigate the problem. Even without a lot of digital IDs installed on the system any time you open a file with that many signatures it takes a long time to validate. Part of the problem is a design flaw where signature 1 gets validated, then when Acrobat moves onto signature 2 it validates signature 1 again because each signature creates a roll-back version of the PDF (View Signed Version) and each rollback version is validated independently. When you extrapolate that out to 20 signatures you can see how much signature validation is going on. We are working on streamlining this process for future versions of Acrobat, but for now it's a liability that you can't get around.
The number of digital IDs is a separate issue where Acrobat does all of the chain building at the front end (it's no longer on app open like it used to be, but as soon as Acrobat has to iterate the list of digital IDs). You don't have to open a signed file to trigger this, but that is one of the triggers. Acrobat has to test each signature to see if it has access to the private key in order to allow the user to clear the signature. It's access to the private key in the digital ID that enables the "Clear signature" menu item.
Sorry for the bad news,
Steve

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Acrobat slow opening files with Digital IDs

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