Hi,
i was reading pdf specification 1.7 about encryption and setting permissions
and i found this:
Note: Once the document has been opened and decrypted successfully, the
applica-
tion has access to the entire contents of the document. There is nothing
inherent in
PDF encryption that enforces the document permissions specified in the
encryption
dictionary. It is up to the implementors of PDF consumer applications to
respect the
intent of the document creator by restricting user access to an encrypted
PDF file ac-
cording to the permissions contained in the file.
If i understood correctly it's just an arbitrary choice of the viewer
software to respect permissions set on the document, is it true? I wrote an
utility using iText to set permissions on documents but perhaps i should add
some hint telling the user that if he sets "degraded print"=true he can't be
sure that the viewer will respect his wishes.
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