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State Hash



On Wed, Oct 08, 2014 at 11:48:20AM -0400, Riad S. Wahby wrote:
> Georgi Guninski <[email protected]> wrote:
> > second, it is not known even if P â?  NP, can a sufficiently
> > powerful quantum computer solve SAT efficiently? -- if the 
> > answer is ``yes'' djb & co fail.
> 
> And yet a quantum computer efficiently solving SAT would be
> substantially more surprising than P=NP!
> 
> Quantum computation is not magic; the limits of quantum mechanics
> already imply relatively strong lower bounds for quantum hash
> collision search.
> 
> -=rsw

Are the limits of quantum mechanics known at all?

As I wrote it might turn out that classic computer might
break SAT efficiently, though this doesn't appear on man
pages of broken warez ;)