Re: Weakness in AES found



On 11-08-19 10:00 AM, biject wrote:

One question I have to ask about this. Is that if this was written
and not suppressed during the AES contest itself. Would a different
cipher have been chosen or blessed?

I strongly suspect that something else (or modified) would be chosen.

Maybe its time to take another look at some of the other possible
candidates

I talked about this in another post in this thread, but we don't yet
know what other AES finalists are also subject to this attack. The
authors have already shown that some hash algorithms are subject to the
same sort of attack, so it isn't clear how unique to Rijndael this is. I
strongly suspect that there are loads of graduate students working on
biclique attacks against those right now.

after all it is kind of foolish to put all the eggs in one basket.

There are software suites out there that incorporate all of the AES
finalists. So for many things, it is easy to swap out Rijndael for
something else. Indeed, various network protocols such as TLS have
"negotiation of which ciphers to use" as part of the protocol.

Where it isn't so easy is where there is hardware support. Many chips
are built with hardware support for AES. Because that is a very capital
intensive business, switching is hard.

Cheers,

-j


--
Jeffrey Goldberg http://goldmark.org/jeff/
I rarely read HTML or poorly quoting posts
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