On Sat, Oct 23, 2010 at 5:54 AM, Ilya Levin <[email protected]> wrote:
> On Wed, Oct 20, 2010 at 11:34 PM, [email protected] <[email protected]> wrote:
>>
>> Does anybody have a pointer to unencumbered C code written to be space
>> efficient? (All the AES code I have trades space for speed).
>
> There is a byte-oriented AES-256 implementation in C available at
> http://bit.ly/cnEU26
>
> It might be something that you are looking for.
>
That's great. I also just found
<http://sourceforge.net/projects/adv-aes-encrypt> which has a small
AES with lots of globals and a hard-coded key. It does do the
different sizes of AES, but only does it at compile time. So, I need
AES128 and I have to pick between these as starting points. Both of
these do key expansion which takes memory and isn't needed for
performance reasons if only encrypting things less than the expanded
key size - 176, 208, and 240 bytes for AES128,192,256 respectively
(which I think my project does).
----
Michael Heyman
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