On Wed, 2013-09-25 at 10:11 -0400, John Young wrote: > [Answer to the question:] "Does there exist an unbreakable cipher" > would be this, "Every cipher is breakable, given enough traffic, and > every cipher is unbreakable, if the traffic volume is restricted > enough." > > [End quote] > > Is this conclusion still valid? If so, what could be done to restrict > traffic volume to assure unbreakablility? And how to sufficiently test > that. Presuming that NSA and cohorts have investigated this effect.
Sure it is. XTS-AES must be rekeyed after each terabyte; WEP was limited by a 24-bit initialization vector; etc. There are always limits, but sometimes they are literally astronomical. _______________________________________________ cryptography mailing list cryptography@randombit.net http://lists.randombit.net/mailman/listinfo/cryptography
