Path: cactus.org!milano!cs.utexas.edu!torn!utcsri!newsflash.concordia.ca! + sifon!thunder.mcrcim.mcgill.edu!sobeco!zap!unimtl!elevia!alain From: alain@elevia.uniforum.qc.ca (W.A.Simon) Newsgroups: sci.crypt Subject: A One-Time Way to Thwart Key Registration... Message-ID: <14059@elevia.uniforum.qc.ca> References:Date: 05 Nov 92 08:29:16 EST Lines: 27 In pcw@access.digex.com (Peter Wayner) sneaks one on the Feds: > [ ... ] > Actually, my favorite solution to this criminal problem is to use > a one-time pad. Then it is possible to come up with two keys. One > that decrypts the conversation into a benign one and one that decrypts > it into the real message. > [ ... ] > So the criminals send key #1 to their cohorts and register > key # 2 with the Federal Key Exchange Registry. When > the cops bug the line all they hear about is the stories > about their trip to Hershey PA. > [ ... ] the Braid allows any number of messages to be hidden within the ciphertext. A convenient choice of key will allow to decode any one of them while leaving all others encrypted. Of course, this presupposes that one accepts the Braid as a valid method of encryption... -{smiley}- -- Alain [ ... usual disclaimer... ]