Re: Enigma machine strenght using a computer


Ignacio aecbi wrote:

The analog these days is point of sales authentication. You can limit
the amount of time an intruder has to steal or break the
authenticating key that secures the transaction.

Maybe, but I'm talking about the algorithm in itself. If fine tuned,
I'm certain it could be fairly efficient and secure.

I like the nostalgic concept and it does scale. These days the
initial rotor positions would probably have to be set using time
stamps or operating system serial numbers to authenticate the sender.
Back in WW2 the keyspace of a 4 rotor enigma was adequate to insure
that a generals order was not mixed up since there were not many
enigma machines out in the field. If a general ordered more tanks
using his key he would not expect a truck load of llamas.

That is also why I partly like the idea :). It is appealing to me. Hmmm
possibly for OS SN or timestamp, I guess I didn't give much though to
considerations other than the algorithm itself.

For higher security needs solutions like IPV6 and modern methods like
closed loop quantum cryptography give better security.

But aren't we talking about an idea for an algorithm versus a whole
security scheme here? I'm talking about the specifics of an algorithm
and you broadened the scope by bringing up a communication protocol and
(as far as I know), a cutting edge cloud shoveling method?

Yes there is a paradigm shift in security these days. Quantum
cryptography likely evolved from some old line of sight granny top
gun system used during the Eisenhower administration to rekey
satellites.

It's somewhat funny to me that it's named Quantum cryptography because
it makes it look like they were able to achieve something special
through QED. It should really be named something like Photonic CMIMC
(Counter man in the middle communication) protocol since there is no
actual cryptography involved; we're talking about a communication
protocol.

Regards
Jean-Francois Michaud

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