[2172] in cryptography@c2.net mail archive
RE: TEA encryption
daemon@ATHENA.MIT.EDU (Trei, Peter)
Tue Feb 24 12:46:19 1998
From: "Trei, Peter" <ptrei@securitydynamics.com>
To: "'Harry Hawk'" <habs@finepoint.com>, cryptography@c2.net
Date: Tue, 24 Feb 1998 10:39:17 -0500
TEA is an acronym for Tiny Encryption Algorithm. A description may be
found at
http://www.io.com/~paulhart/game/algorithms/tea.html
http://webcontrol.otc.net/crypto/Docs/algorithms.html notes:
Tiny Encryption Algorithm (TEA)
The cryptographers from Counterpane Systems have discovered three
related-key attacks
on TEA, the best of which requires only 223 chosen plaintexts and one
related key query.
The problems arise from the overly simple key schedule. Each TEA key can
be found to
have three other equivalent keys, as described in a paper by David
Wagner, John Kelsey,
and Bruce Schneier.
The papers may be found at:
http://www.cs.berkeley.edu/~daw/keysched-icics97.ps - key
equivalency problem
http://www.cs.berkeley.edu/~daw/keysched-crypto96.ps -
related-key attacks
Peter Trei
ptrei@securitydynamics.com
> -----Original Message-----
> From: Harry Hawk [SMTP:habs@finepoint.com]
> Sent: Tuesday, February 24, 1998 10:56 AM
> To: cryptography@c2.net
> Subject: TEA encryption
>
> The firm I am working with is considering using some software that
> used encryption based on something called TEA. The company indicated
> it is somewhat well known, but none of my Crypto-wise friends had
> heard of it. I'm hoping someone here has.
>
> If anyone has any thoughts, pointers or links, you can send them to me
> at habs@finepoint.com . I will summarize to the list if there is
> anything substance noted.
>
> Thanks!
>
> /hawk
>
> --
> Harry S. Hawk habs@finepoint.com
> Fine Point Technologies, Inc.
> http://www.finepoint.com/totalinternet
> Leveling the Playing Field...
