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From: magik@chinet.UUCP (Ben Liberman)
Newsgroups: net.crypt
Subject: Re: Naieve Inquiry: Streaming Cyphers (?)
Message-ID: <431@chinet.UUCP>
Date: Sat, 19-Jul-86 04:53:21 EDT
Article-I.D.: chinet.431
Posted: Sat Jul 19 04:53:21 1986
Date-Received: Sun, 20-Jul-86 06:10:36 EDT
References: <1065@ogcvax.UUCP> <430@chinet.UUCP> <1443@well.UUCP>
Reply-To: magik@chinet.UUCP (Ben Liberman)
Distribution: net
Organization: chi-net, Public Access UN*X, Chicago IL
Lines: 9

>>you could constantly ship blocks padded out with random data.
>Is there a good way, then, of indicating where the random data ends and the
>real data begins? 

One way would be to terminate the real data with a prearanged bit pattern flag
(remember, all of this gets encoded before transmission) and then pad it out
with random data.  All of the block then gets encoded and the program on the
other end, after deciphering the block, throws away everything in the block that
follows the terminator flag.