1998-08-17 - Adobe Acrobat encryption details

Header Data

From: Fade <fade@mail1.i1.net>
To: cypherpunks@toad.com
Message Hash: 03fa01aabf2b5d537fac1bfd4b75fa090f108c723300acf945e329c897570e22
Message ID: <Pine.BSI.3.95.980817105445.1266A-100000@mail1.i1.net>
Reply To: N/A
UTC Datetime: 1998-08-17 15:55:12 UTC
Raw Date: Mon, 17 Aug 1998 08:55:12 -0700 (PDT)

Raw message

From: Fade <fade@mail1.i1.net>
Date: Mon, 17 Aug 1998 08:55:12 -0700 (PDT)
To: cypherpunks@toad.com
Subject: Adobe Acrobat encryption details
Message-ID: <Pine.BSI.3.95.980817105445.1266A-100000@mail1.i1.net>
MIME-Version: 1.0
Content-Type: text/plain

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...