Re: Someone said 256 bits is not enough

Times ago there were some recurring posts about this calculation.
Depending on various criteria the span was in the range of some
decades, assuming an highest profile attacker (many thousands of
machines working for one year, a sort of), obviously home-brewed
attacker would take quite some more years to get there, and even more
years would be required before a time-fashoned attch (lasting few
hour) could take place.
It was a very conservative exteem, and it's quite coherent with NIST
evaluation of AES selection process, which don't qualifies 128 bit
encryption for top secret documents (which should be kept secret for
many decades, I don't exactly reacall if 50 or 70 years).
However, needless to say, any exteem about what may happen some
decades in the future in information technology filed should be taken
as higly uncertain, this was implicit in my post!
.

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