digital signature invalid after extraction of pages

[SugarKat]

Hello everybody,

I signed a document with Skribble.com with the highes security standard according to European legislation. Afterwards I had to separate the pages of the document to comply with internal rules. I did this with the page extraction function.

Now it tells me with the ARUBA PEC programm that the electronic signature is not valid.

In the one-piece document the signatures are all valid (several signatures on different pages).

How can I "slice" the document into the pieces I need without loosing the signatures, please?

Thank you in advance for your prescious support!

Best regards,
Kate

[Willy Van Nuffel]

A valid signature is the guarantee that no single character has been changed or moved in the document in its whole.

When you split the signed document, the signature becomes invalid because the document has been changed.

So, you will have to first split the document, and then sign the different documents that result.

Kind regards.

[SugarKat]

Dear Willy van Nuffel,

Thank you very much for the fast reply. So the process needs to be done again great. with all the management involved. Wanted to make it more easy and now it is more complicated...

Have a nice day!
Kate

[Willy Van Nuffel]

Maybe the signatures do not have to be valid for internal use ?
After splitting the original signed document, the signatures become invalid but their visibility is not lost.

[Daniel - PDF-XChange]

Hello,

Thanks again Willy for helping out here.
As willy says, "the signature is the guarantee that no single character has been changed or moved". To expand on this a bit, the Certificate in use is specifically tied, with a special token, to that specific document. Splitting, creates a new document and so it is impossible to translate the signature to a new one automatically. In all cases when such actions happen, the old signature is invalidated, and you will need to sign the document once again.

To expand on Willy's suggestion, if you do need to "lightly" validate files internally, you do also have the option to use our "signatures and initials" tool, which simply places and flattens a special "stamp" object in the file usually intended to be a signature graphic.

This does not include any of the security restrictions of a digital certificate, but if you trust the workers who are accessing the file not to meddle with each others content, it would be a viable solution.

Then when the file is finalized and no further changes need to be made, a single "certify" certificate could be applied to the file by yourself, or one of the others to validate the completed document, and restrict any further changes.

Kind regards,