Is this correct, do I need to worry about this message? I understand that Adobe does not trust identities by default, which can be resolved by manually trusting the identities, but this needs to be applied to the user's computer.
However, several documents I have read say that say this does not mean the signature is invalid, it just hasn't been trusted. I've had concerns with the form that I created displaying 'At least one signatures has a problem' and when clicking on signature field 'Signature validity is unknown'. The other departments don't lock after they are signed (for now at least) but I do not think flattening the PDF is necessary, am I correct? How can I explain that 'refrying' is not good practice? I kind of understand but I really need help expaining it.ĭigital signatures have been difficult to wrap my head around, however I think I have a pretty good idea how it works after researching everything I can find to death. As far as I understand, the final digital signature is enough by locking it so it can't be tampered with. The other departments are still saving the document by refrying. However, I've added a script on my particular form so it locks when the last signature is applied by the manager, which is how I save now. Several digital signatures are applied to the document but can still be editted after they are applied. We work with Acrobat so even Optimizing seems like a better alternative, although, I don't think either is necessary.
The reason we were instructed to 'refry' was so the document could not be tampered with after we save it. I was taught to save our documents by Printing to Adobe and told that was flattening, which I've learned now it is also referred to as 'refrying', not a practice supported by Adobe.
Can someone explain to me what exactly is 'flattening' a PDF ? Is it done so a document can't be tampered with? Why would you need to flatten a PDF? For printing?
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