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The following archive was created by hippie-mail 7.98617-22 on Sat Apr 10 1999 - 01:15:21
Anonymous (nobody@replay.com)
Sat, 10 Oct 1998 05:13:17 +0200
I think he's talking about how much you can strip down the function before
it loses its avalanche properties.
In response to Keith's original post:
I really don't think this is a good way to evaluate an algorithm. It's
more of an intelligent way to count an algorithm's rounds than a new
measure of its security.
It's already a common practice to look at the security of stripped-down
versions of algorithms, which is much more useful than just looking at the
avalanche; it's trivial to make a hash function with very "deep" avalanche
which cryptographers would immediately find weak. In addition, defining
the metric itself can become tricky when the function's structure doesn't
allow a simple stripping-down.
If you're looking for something to guide your choice of hash function,
listen to some experts' opinions or get the all the info necessary to take
a good, deep look at the question yourself. Metrics like that just don't
work for measuring algorithm security.
The following archive was created by hippie-mail 7.98617-22 on Sat Apr 10 1999 - 01:15:21