Message-Id: <9305211830(_dot_)AA21619(_at_)TIS(_dot_)COM>
Subject: Re: TIS/PEM will probably have exprimental support for EDE
Date: Fri, 21 May 93 14:30:36 -0400
From: Stephen D Crocker <crocker(_at_)TIS(_dot_)COM>
Steve,
you wrote:
It's highly preferable to avoid unnecessary proliferation. If EDE2
and EDE3 are both defined, anyone who can *receive* both is in good
shape, but if you want to be sure your intended recipient can handle
what you're sending, you pretty have to choose EDE2.
I understand. However, even a person with only an EDE2 chip can receive
all modes. That's one reason EDE was chosen -- so that it knew how to
operate as a single E.
Therefore, there is no reason for the sender to choose EDE2 unless he
has a request from some recipient to do so for performance reasons.
I would expect that to be extremely unlikely. If a recipient has DES
hardware, he's already far ahead of me in performance. If he's receiving
something very large, I would expect (from netiquette) that large thing to
have a very small distribution list. In that case, the recipients are known
and presumably their performance preferences are also.
- Carl