Re: Computing Rijndael's S-Box?
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Re: Computing Rijndael's S-Box?

From: <contini@matmail.com>
Date: Mon Aug 29 2005 - 02:25:19 CEST



You should read about finite fields.


One way to compute an inverse in this field is raise the element to the


254th power -- but that assumes you know how to multiply in the field.


There are faster ways of computing the inverse, but they would take


more


time to explain, and I am impatient.



Scott


Received on Thu Sep 29 21:51:25 2005