So I say, "Damn! CRC Error! Must be a bad disk. Well, no point in keeping THIS sitting around."
Yeah, but remember, in the world we're heading to, presumption of innocence is worth even less, than President's word! Then it will be *your* responsibility to satisfy the Inquisitor, or he might not let you out from his building, where you were invited to explain yourself and your messages. (:-) (:-(
is how to produce on demand a causal explanation of data (which actually contains an encrypted message) that satisfies an investigator and doesn't reveal the encrypted message. Some simple scheme like, "Uh, it's the result of my new random number generation algorithm" isn't likely to be *satisfying* and is certain to produce the response, "OK, let's see the algorithm."
And the response to this will be: "Sure, here it is, this nice hardware implementation. You may have it, if you wish!" (:-) It's fool-proof, but still the Big Brother might dislike your desire to play with those bad random generators, and decide, that you better be kept in KZ-camp... Probably creating a GIF/TIFF/whatever file yourself, with normal consumer-grade equipment (noise-prone :-) and substituting it's LSB (or whatever certainly lies BELOW the noise floor) with bits of the message, does sound like the best choice today. Advantages: 1) Doesn't look suspicious, no more, than "traditional" sending photos of your house, family, yourself... 2) Has enough of bandwidth to communicate reasonably large personal messages (though a binary og PGP might not fit into a "normal" GIF file :-). 3) Requires only widely available consumer appliances (Camcoder, digitizer, .....). 4) The image doesn't have to be known to your correspondent in advance (a big one!). Disadvantages: 1) Somebody has to do it, to write code, to buy a Camcoder (:-). 2) May lead to outlawing of ALL the image and sound transmission via electronic media, if Big Brother gets really annoyed (:-). [Don't laugh, you! Look at the latest Scanner Bill! :-] Regards, Uri. ------------ <Disclaimer>