pdf documents are digitally signed and sometimes you want to get printouts of same with valid digital signature.
So, how it can be done:
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Open the (signed) pdf document.
Click on the signature with "yellow question mark"
It opens up signature validation status.
There is "signature properties" , click on it.
Click "show certificate" here.
There is "Trust" tab in "show certificate". click on "Add to trusted identities".
-> OK.
Now, you click on "validate signature".
The "yellow question mark" becomes "green tick mark".
Now, your printout will reflect the "green tick mark".
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