spread spectrum; secret sharing

[Marc.Ringuette at GS80.SP.CS.CMU.EDU]

I'd like to find a brief tutorial on spread spectrum communications.

I'd also like to become familiar with a decent secret sharing protocol
(say, to share a secret among N people so that any K of them can obtain
the secret but no K-1 of them can).

Anyone have anything to offer me?


-- Marc Ringuette (mnr at cs.cmu.edu)