Re: Are DES restriction even logically sound?

Article View: sci.crypt

Article #746

#746

From: William Unruh
Date: Tue, 08 Sep 1992 02:02

12 lines
1303 bytes

who@gandalf.UMCS.Maine.EDU (William H. Owen) writes:


>	There is a nice version of DES in pascal included in "Computer Networks"
>by Andrew S. Tanenbaum. Anyone have a version of DES with a 128 bit key size? Or
>alternative choices for S-boxes? Or just maybe the NSA doesn't want you to crypt
>something that the gov't can't uncrypt.
Uh, read your first line. You have the source- change the Sboxes to your
heart's content. Double, triple, qudruple encrypt with different keys,
and different permutations. If NSA had really wanted to make sure you
couldn't use anything but their weak(???) DES, they would never have
agreed to release the details of DES for you to change them.

Technical Details

Message-ID: <unruh.715917768@physics.ubc.ca>

Path: arc1-ca.pugleaf.net!sparky!uunet!olivea!spool.mu.edu!wupost!gumby!destroyer!ubc-cs!unixg.ubc.ca!physics.ubc.ca!unruh

References: <1992Sep5.164646.21443@uwm.edu> <Bu5597.3x4@sneaky.lonestar.org> <1992Sep7.225615.18289@gandalf.UMCS.Maine.EDU>

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!sparky!uunet!olivea!spool.mu.edu!wupost!gumby!destroyer!ubc-cs!unixg.ubc.ca!physics.ubc.ca!unruh
From: unruh@physics.ubc.ca (William Unruh)
Newsgroups: sci.crypt,alt.security
Subject: Re: Are DES restriction even logically sound?
Message-ID: <unruh.715917768@physics.ubc.ca>
Date: 8 Sep 92 02:02:48 GMT
References: <1992Sep5.164646.21443@uwm.edu> <Bu5597.3x4@sneaky.lonestar.org> <1992Sep7.225615.18289@gandalf.UMCS.Maine.EDU>
Sender: news@unixg.ubc.ca (Usenet News Maintenance)
Organization: University of British Columbia, Vancouver, B.C., Canada
Lines: 12
Nntp-Posting-Host: physics.ubc.ca

Reply to Parent Message