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Multiple Signatures Slow Verification Process

New Here ,
Feb 26, 2019

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I have a document that contains over 25 certificate signatures. The first few signatures behave fine, but the last few take a minute or more for each one since all signatures are verified each time. How can I make it verify only with the final signature or save of the document?

Edited with Acrobat DC, filled with DC Reader, signed with Topaz USB signature pad.

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Correct answer by try67 | Most Valuable Participant

Each time you sign a document it creates a full copy of it and embeds it in itself, so it can be verified against the current version.

If you do that 24 times the size of the file will balloon exponentially and verifying it will become longer and longer with each signature.

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Security digital signatures and esignatures, Windows

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Multiple Signatures Slow Verification Process

New Here ,
Feb 26, 2019

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I have a document that contains over 25 certificate signatures. The first few signatures behave fine, but the last few take a minute or more for each one since all signatures are verified each time. How can I make it verify only with the final signature or save of the document?

Edited with Acrobat DC, filled with DC Reader, signed with Topaz USB signature pad.

Most Valuable Participant
Correct answer by try67 | Most Valuable Participant

Each time you sign a document it creates a full copy of it and embeds it in itself, so it can be verified against the current version.

If you do that 24 times the size of the file will balloon exponentially and verifying it will become longer and longer with each signature.

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Security digital signatures and esignatures, Windows

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2.3K

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Most Valuable Participant ,
Feb 26, 2019

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You can't do that, but you can tell it not to verify any of them at all.

To do that go to Edit - Preferences - Signatures - Verification and tick off the box next to "Verify signatures when the document is opened".

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New Here ,
Feb 26, 2019

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I had seen that as a suggested solution. I am guessing that the wording of that option applies to all verifications. Can I turn it on before the final save to verify from that point forward?

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Most Valuable Participant ,
Feb 26, 2019

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No, that's not how it works.

Why are you signing the same file multiple times in the first place, though?

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New Here ,
Feb 26, 2019

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Multiple documents in one pack. One of those documents has six signatures since it touches three areas and has employee/hr signatures. 24 pages total for the complete packet.

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Most Valuable Participant ,
Feb 26, 2019

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Each time you sign a document it creates a full copy of it and embeds it in itself, so it can be verified against the current version.

If you do that 24 times the size of the file will balloon exponentially and verifying it will become longer and longer with each signature.

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Engaged ,
Jun 01, 2020

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Not quite true. Each signature is an incremental save section appended to the document. The underlying document is not copied. However, verifying the signatures turns out to be an N^2 process, since verifying each signature requires checking all of the previous signatures.

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New Here ,
Feb 26, 2019

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The solution to this problem is the following:

If you do not want the document to be verified every time it is signed then follow this solution:

* Sign the document wait until the message "Verifying all the signature" appears, then press and hold the escape key until "Verifying all signatures" closes.

* You can do this for all the following signatures. keeping in mind that the last signature must be validated so that all the signatures in the document are valid and verified.

* Once you have finished with all the signatures you can also validate the signature by clicking on Signature Panel and then clicking Validate All.

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New Here ,
Feb 26, 2019

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I like this idea for a technical user or guided data entry. I believe that they want to leave the employee alone to fill out the documents (boat manufacturing new hire) and the HR rep will come in at the end and sign their lines. Good option, though.

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New Here ,
Jun 01, 2020

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