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Re: Adobe Acrobat encryption details

To: [email protected]
Subject: Re: Adobe Acrobat encryption details
From: [email protected]
Date: Mon, 17 Aug 1998 11:41:49 -0500
Cc: Fade <[email protected]>
In-reply-to: Your message of "Mon, 17 Aug 1998 10:57:24 CDT." <[email protected]>
Sender: [email protected]

In message <[email protected]>, you write:
> 
> Hi all,
> 
> I was hoping someone might be able to point me to details on .PDF file
> encryption.  I'm specifically interested in key-generation (which hash is
> used?) and if there is consistant known-plaintext in .PDF file headers.
> 
> I've searched around, and all I can find is that Acrobat uses rc4, which
> isn't very helpful...

I don't have any info on this sort of thing, but you can check out the
latest versions of Ghostscript (at least the 4.01 version I've got
installed), it has ps2pdf conversion utils, might give you an idea on
how they encode 'em.

--
Michael Parson
Systems Administrator
IXC Communications, Inc.
The Data Place - Austin

References:
- Adobe Acrobat encryption details
  - From: Fade <[email protected]>

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