Re: Unconditional quantum bit commitment

2000-06-29 Thread R. Hirschfeld
According to a source in the area who I consider to be reliable, Dominic Mayers's impossibility theorem applies, and this result is therefore incorrect. I'd thus encourage people to check the paper thoroughly before relying on its results. I haven't done so myself because I suspect much of the q

Re: Extracting Entropy?

2000-06-29 Thread John Kelsey
-BEGIN PGP SIGNED MESSAGE- At 07:24 PM 6/27/00 +0100, Paul Crowley wrote: >John Kelsey <[EMAIL PROTECTED]> writes: ... >> A generalization of this idea is: >> >> S(K,len) is stream cipher output with key K and length of output >> len. hash(X) is hash function output of same size as K. K