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- Newsgroups: sci.crypt
- Path: sparky!uunet!think.com!linus!linus.mitre.org!gauss!bs
- From: bs@gauss.mitre.org (Robert D. Silverman)
- Subject: Re: Fraction part of squareroots as one time pads ?
- Message-ID: <1993Jan12.152310.12781@linus.mitre.org>
- Sender: news@linus.mitre.org (News Service)
- Nntp-Posting-Host: gauss.mitre.org
- Organization: Research Computer Facility, MITRE Corporation, Bedford, MA
- References: <1993Jan11.223532.13477@ryn.mro4.dec.com>
- Date: Tue, 12 Jan 1993 15:23:10 GMT
- Lines: 37
-
- In article <1993Jan11.223532.13477@ryn.mro4.dec.com> roth@3d.enet.dec.com (Jim Roth) writes:
- :
- :In article <1993Jan11.143125.24040@linus.mitre.org>, bs@gauss.mitre.org (Robert D. Silverman) writes...
- :>In article <1993Jan11.111351.7777@hsr.no> frank@hsr.no (Frank A Stevenson) writes:
- :>: question about using irrational root as a "one time pad"...
- :
- :>Your last point might be questioned. There are some good integer relation
- :>finding algorithms (Ferguson & Forcade, for example and improvements)
- :>that allow one to very quickly determine that the number is the root of
- :>an integer, based upon just the first few digits. Once that is determined,
- :>finding the rest of the key is trivial.
- :
- :>The same would be true for any ALGEBRAIC irrational.
- :
- :I know how to do this using a lattice basis reduction algorithm, (such
- :as LLL) but don't know the Ferguson & Forcade refrence - can you post a
-
- Yep. L^3 would work as well.
-
- See the following:
-
- :citation? (I think the "first few digits" would have to be on the
-
- See D. Bailey, H. Ferguson
- Numerical results on relations between fundamental constants
- using a new algorithm.
- Math. Comp. v. 53 p. 649 (1989)
-
- :order of the height of the underlying minimal polynomial, but that's still
- :not much info...)
-
- Yep.
- --
- Bob Silverman
- These are my opinions and not MITRE's.
- Mitre Corporation, Bedford, MA 01730
- "You can lead a horse's ass to knowledge, but you can't make him think"
-