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From: dewar@merv.cs.nyu.edu (Robert Dewar)
Subject: Re: Not intended for use in medical,
Date: 1997/05/08
Message-ID: <dewar.863148621@merv>#1/1
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References: <3.0.32.19970423164855.00746db8@mail.4dcomm.com>
 <5kmek2$9re@bcrkh13.bnr.ca> <E9rMuy.Hs0@world.std.com> <dewar.863062734@merv>
 <5ktldo$2pp@bcrkh13.bnr.ca>
Organization: New York University
Newsgroups: comp.lang.ada
Date: 1997-05-08T00:00:00+00:00
List-Id: <comp.lang.ada>


Kaz said

<<I can't think of a reasonable name to give to the two intermediate
cipher blocks other than 'a' and 'b'>>

Whenever you cannot think of a reasonable name to give to a variable, that
is a priori suspicious, it suggests that the expression of the algorithm
involving the variables is not as clear as it might be. Sure, short names
are appropriate sometime, but you should always be able to give a very
clear description of a variable. Essentially this desription is an invariant
that describes the meaning of the value of the variable

"Intermediate value" is not a very useful invariant!