I just saw in another topic here in forum about existence of certifying and normal signing of pdf documents.
Can you please describe difference between two concepts?
Thank you!
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A certifying signature is a concept in PDF signing where the document can be locked for further modifications (for instance by the author). You can only certify a PDF once and then you can also set PDF permissions that prevents modifications or allows some modifications like filling in forms or applying additional signatures. Some PDF readers might also display a certifying signature differently (i.e. in Adobe Acrobat/Reader with a blue ribbon instead of green).
Hello,
I just saw in another topic here in forum about existence of certifying and normal signing of pdf documents.
Can you please describe difference between two concepts?
Thank you!
Hi Serhii,
A certifying signature is a concept in PDF signing where the document can be locked for further modifications (for instance by the author). You can only certify a PDF once and then you can also set PDF permissions that prevents modifications or allows some modifications like filling in forms or applying additional signatures. Some PDF readers might also display a certifying signature differently (i.e. in Adobe Acrobat/Reader with a blue ribbon instead of green).
By default SignServer will create a normal signature but to instead create a certifying signature set the CERTIFICATION_LEVEL worker property. See the available worker properties:
https://doc.primekey.com/signserver520/signserver-reference/signserver-workers/signserver-signers/pdf-signer#PDFSigner-WorkerProperties
Cheers,
Markus