Re: AES: basic question on SBoxes

From: Mok-Kong Shen (mok-kong.shen_at_t-online.de)
Date: 11/23/03 

Date: Sun, 23 Nov 2003 20:17:44 +0100

Daniel wrote:
>
[snip]
> If I was to change the contents of the SBox and fill it up with 256
> unique numbers in a different order, would it change the strength of
> the cipher? Why is it filled up this way? What is the theory behind
> all this? Where can I find more info on this?

Changing the S-box surely has substantial impact on
a cipher. You can find about the design of AES in the
book by its autors Daemen and Rijmen: The Design of
Rijndael. Springer, 2002.

M. K. Shen

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