[Cryptography] List of Proven Secure Ciphers / Hashes

Bill Frantz frantz at pwpconsult.com
Tue Sep 9 17:39:53 EDT 2014


On 9/9/14 at 9:49 PM, pgut001 at cs.auckland.ac.nz (Peter Gutmann) wrote:

>Same here, but the reasoning is much simpler.  Let's say aliens land tomorrow
>and announce "There was another gunman on the grassy knoll, we were
>responsible for the Mary Celeste (sorry about that), oh, and also P = NP.  See
>you in another billion years".

Well, first, why do we believe the aliens? Assuming we do and 
ignoring the first two, if they offer evidence for the statement 
that P = NP, then that evidence may offer useful hints for 
developing attacks. The same comment applies if we develop that 
evidence without space aliens.

However, I don't expect to wake up one day with no warning to 
find I can download a RSA/ECC breaker. (Unless the math is 
developed in NSA/GCHQ/KGB/etc. and the break is developed in 
secret.) If the math is public, it will take some time to 
develop breaks. However, that time may be shorter than the eons 
it takes to update SSL/TLS. (Look at the number of sites still 
vulnerable to Heartbeat.)

Cheers - Bill

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