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Article #1800

Re: Cryptography and P=NP

#1800
From: annan
Date: Mon, 16 Nov 1992 08:45
23 lines
1734 bytes
In article <1e7fvdINN87s@iskut.ucs.ubc.ca>, ramsay@math.ubc.ca (Keith Ramsay) writes:
> In article <PHR.92Nov15203840@napa.telebit.com> phr@telebit.com 
> (Paul Rubin) writes:
>>It is true that if P=NP then all cryptography everywhere (not just RSA)
>>is dead; but at this point I wouldn't take Swart's claims seriously
>>without seeing some consensus among complexity efforts that unlike
>>his previous attempts, his latest effort is free of bugs.
> 
> Mathematics would also be placed in a surprising position by P=NP.
> P=NP implies that there is an algorithm which, given a theorem
> expressed formally in ZF, say, and a number n, either gives a formal
> proof of the theorem of length at most n, or shows that there is none,
> and which would take time bounded by some polynomial in n. It wouldn't
> *necessarily* put us all out of the math research business, but....

And remember, proving P=NP doesn't necessarily mean finding such an algorithm,
merely proving it exists.

-- 
James Annan.
                [--------------------------------------]
                [  "The only good Tory is a lavatory"  ]
                [--------------------------------------]
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References: <1992Nov15.110945.19939@ringer.cs.utsa.edu> <PHR.92Nov15203840@napa.telebit.com> <1e7fvdINN87s@iskut.ucs.ubc.ca>

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From: annan@vax.oxford.ac.uk
Newsgroups: sci.crypt,sci.math,comp.theory
Subject: Re: Cryptography and P=NP
Message-ID: <1992Nov16.084503.10141@vax.oxford.ac.uk>
Date: 16 Nov 92 08:45:03 GMT
References: <1992Nov15.110945.19939@ringer.cs.utsa.edu> <PHR.92Nov15203840@napa.telebit.com> <1e7fvdINN87s@iskut.ucs.ubc.ca>
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