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Re: Two AES encryption modes?

To: Michael Richardson <mcr@sandelman.ottawa.on.ca>
Subject: Re: Two AES encryption modes?
From: Dan McDonald <danmcd@east.sun.com>
Date: Thu, 25 Jul 2002 12:18:01 -0400 (EDT)
CC: ipsec@lists.tislabs.com
In-Reply-To: <200207251527.g6PFRZB6006042@marajade.sandelman.ottawa.on.ca> fromMichael Richardson at "Jul 25, 2002 11:27:33 am"
Organization: Sun Microsystems, Inc. - Solaris Internet Engineering
Sender: owner-ipsec@lists.tislabs.com

>   Uh, they are really two different ciphers and should be treated like that.

I agree here w.r.t. AES-CBC vs. AES-Counter.

OTOH...

>   I'm pretty sure that we already decided that SOI would treat AES-128 and
> AES-256 as two entirely different ciphers as well.
>   No argument about combinatorics.

WHAT!?!  We already have Blowfish, which is variable key-sized, even though
2451 says its default is 128.  We shouldn't need to break existing semantics
for AES!

Dan

Follow-Ups:
- Re: Two AES encryption modes?
  - From: Michael Richardson <mcr@sandelman.ottawa.on.ca>
- Re: Two AES encryption modes?
  - From: Bill Sommerfeld <sommerfeld@east.sun.com>

References:
- Re: Two AES encryption modes?
  - From: Michael Richardson <mcr@sandelman.ottawa.on.ca>

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