On Sun, 30 Sep 2001, John Chambers wrote: > Richard Robinson writes: > | On Sat, 29 Sep 2001, Laurie Griffiths wrote: > | > | > %This is more subtle - Message 5 is encoded in the line breaks of the > | > source. > | > G | ABcd | e \ > | > fg > | > > | > I think I'll stop before the CIA try to extradite me. > | > | Well, yes. I was browsing around the "Munitions" website > | (cryptography-related :- for no particular reason - someone posted a url > | so I had a look, as one does) and saw a reference to a steganographic > | prgram which does more or less that - hides a message in spurious > | whitespace at the ends of lines in an ascii file. :-) > > Oops! Look what I started ... > > It does occur to me that if you want to do this, there's an even > better way, which would be familiar to anyone trying to deal with the > garbage HTML that is generated by a lot of software. Just send an > HTML doc with a lot of spurious <font>...</font> or <dir>...</dir> > tags. Nobody would ever expect this to contain hidden text, because > there is so much of this sort of junk around already. You could also > add a whole lot of unnecessary chars here and there. Just put > a spurious <META...FrontPage...> tag at the beginning, and nobody > would be able to convict you of anything.
There was another program mentioned on the same site, that hides a message in "small, hardly-noticeable changes" to an ascii file. Which would be an interesting way of coming up with variants of a tune. The message could then be delivered by playing the tune, and the recipient would transcribe it to recover the message ... I don't think I'd want to rely on "what people expect", though. I'd imagine the Echelon mob just throw CPUs at the full text of anything they're interested in. > You wouldn't even have to worry about inserting the tags in legal > spots, since FrontPage doesn't. In fact, it'd be better if you could > arrange for a few extra </font> and </dir> tags now and then, to make > it look like real FrontPage output. > > The CIA doesn't stand a chance with Microsoft helping us like this. > > (Bash, bash ... ;-) Ooo ! -- Richard Robinson "The whole plan hinged upon the natural curiosity of potatoes" - S. Lem To subscribe/unsubscribe, point your browser to: http://www.tullochgorm.com/lists.html
