We are solving question, how to sign with digital certificate whole PDF portfolio. This portfolio has included more documents, which have digital signed .
We want keep existing signatures on sub-documents, but when we merge this documents to one portfolio, we want to guarantee, that this portfolio is original and any documents wasn´t changed.
Is some feature in adobe acrobat pro (i tried 15.017.20050) or some feature, how to use digital sign (with cerificate) for whole portfolio ?
Thanks, Martin