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- Path: sparky!uunet!ogicse!emory!wupost!spool.mu.edu!news.nd.edu!mentor.cc.purdue.edu!hrubin
- From: hrubin@mentor.cc.purdue.edu (Herman Rubin)
- Newsgroups: sci.math
- Subject: Re: Cryptography and P=NP
- Message-ID: <BxsD57.5MH@mentor.cc.purdue.edu>
- Date: 16 Nov 92 01:51:05 GMT
- Article-I.D.: mentor.BxsD57.5MH
- References: <1e6hraINNdui@manuel.anu.edu.au>
- Organization: Purdue University Statistics Department
- Lines: 15
-
- In article <1e6hraINNdui@manuel.anu.edu.au> des@thrain.anu.edu.au (David Stewart 249-4502 room 134) writes:
- >
- >If P=NP then **every** public key cryptosystem is in trouble!
- >
- >(Computing the private key given the public key is in NP -- given the private key
- >the point is that the public key is easy to compute, but not vice-versa.)
-
- Not necessarily. Numerical integration formulas of the type used in one
- dimension extend polynomially to any number of dimensions. But this makes
- them so expensive that they are not even used too often in 3 dimensions.
- --
- Herman Rubin, Dept. of Statistics, Purdue Univ., West Lafayette IN47907-1399
- Phone: (317)494-6054
- hrubin@snap.stat.purdue.edu (Internet, bitnet)
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