A book by Peter Wayner (pcw@access.digex.com), of interest to cypherpunks. (OK, cypherpunks mailing list subscribers then) There is more info at Peter's home page: http://www.access.digex.net/~pcw/pcwpage.html but I couldn't get to it when I tried just now. I got my copy from Border's in Houston on Sunday. He describes mimic functions, a particular interest of mine. He also covers basic encryption, error correction, secret sharing, compression, context free grammers, anonymous remailers, reversible computing, etc. There is an evaluation of several stego packages, and an inclusive (there isn't enough published about steganography to call it extensive) bibliography. The presentation is at an introductory, but not trivial level. I wish there had been more technical explanations, but I suppose the author would have lost a sizable fraction of an already tiny audience. By the way, "the people who participate on the cypherpunks mailing list" get a nice "thankyou" in the preface. Rick F. Hoselton (who doesn't claim to present opinions for others)