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- From: roth@3d.enet.dec.com (Jim Roth)
- Subject: Re: Fraction part of squareroots as one time pads ?
- Message-ID: <1993Jan11.223532.13477@ryn.mro4.dec.com>
- Sender: news@ryn.mro4.dec.com (USENET News System)
- Organization: Digital Equipment Corporation
- Date: 11 JAN 93 17:35:53
- Lines: 24
-
-
- 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
- citation? (I think the "first few digits" would have to be on the
- order of the height of the underlying minimal polynomial, but that's still
- not much info...)
-
- (I asked publically since others may be interested as well.)
-
- Thanks,
-
- - Jim
-