crypto splitting program

[David Mandelberg]

Does anybody know of a program that can split a file into n files such that to
recreate the original file, m parts are necessary?

This is done in crypto using the concept that you have a  y = f(x) graph where
the original file is the y intercept and the degree is m - 1. Each separate file
is one point on the function, and once you have m points (files), the y
intercept (original file) can be computed. until m -1 files are useless however,
because the y intercept could still be anywhere.

The math behind that, while possible to do by hand, is difficult, and apt-cache
search didn't show anything that would do that.

-- 
-----BEGIN GEEK CODE BLOCK-----
Version: 3.1
GAT/CM$/CS>$/CC/IT$/M/S/O/U dpu s+:++ !a C++$>C+++$
UB+++>++++$L++++$*-- P+>++$ L+++(++++)$ E-(---) W+++>$ N(+) o? K-
w--(---) O? M V? PS++@ PE-@ Y+@ PGP++(+++)>$ t? 5? X? R tv--(-)
b++(+++)@ DI? D? G e->++++ h* r? z*
------END GEEK CODE BLOCK------

David Mandelberg
mandelbergd at eth0.is-a-geek.org
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 256 bytes
Desc: OpenPGP digital signature
URL: <https://lists.ubuntu.com/archives/ubuntu-users/attachments/20050111/e3aa3d7d/attachment.sig>