Re: pdf security

Subject: Re: pdf security
From: <holmegm -at- tds -dot- net>
To: "TECHWR-L" <techwr-l -at- lists -dot- raycomm -dot- com>
Date: Thu, 13 May 2004 10:06:20 +0000

"bryan johnson" wrote:

>I need to come up with a security pop-up for a pdf document
>similar to the "I agree" screens on most software
>installations. This would simply prevent the pdf from being
>opened unless the viewer agreed to relinquish us from any
>legal liabilities.
>Does Acrobat Professional have this capabilities?

I'll stick my neck out on this question again, and point
out that PDF is a published format, and there exists a
multitude of programs that can read and display it
(including various previewers and graphics programs).

Any "security" that doesn't involve the actual *contents*
being encrypted (IOW, you have to enter a password to even
see the words in _any way_) is fake, and consists of a
little flag asking the software "please don't let the user
modify, copy, or print" or whatever the *supposed*
restriction is.

So, does some flavor of Acrobat honor a little flag
requesting "please make the user click OK on a dialog box
before showing them the document"? Maybe, and given the
other "security" features available, probably :) But I'd
personally be very leery of relying upon such a mechanism.

Greg Holmes


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