Hello.
I have a problem with encrypting signed pdf. Currently we store signed pdf
in our database and need to sent encrypted version over the net, but
encrypting it using PDFReader  and PdfStamper seems to break certificates
existing(adobe reader says they are not valid).
Is there some workaround for that?
I also tried to sign those pdfs again during encryption but i end with pdf
with 2 certificates. The new one which is valid and old one which is
broken(maybe there is some way to delete this one?)



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