-----BEGIN PGP SIGNED MESSAGE----- JonWienke@aol.com wrote:

Another thing--just a wild idea--test the randomness of encrypted data storing it in an 8-bit mono .WAV (your choice of sample rates) file and listening to it. Any correlations or patterns in the data should show the playback as hums, clicks, squeals, or something. It may even be to determine the algorithm by the sound patterns--a sort of "audio cryptanalysis." Has anyone tried this? Are there any .WAV stego out there?

s-tools is an audio stego utility(s), but I've not used it. As for testing methods, noise spheres are an interesting graphical method for testing randomness (check the archives from late Dec/early Jan, I posted a short Turbo Pascal program that implements them). I'm not entirely sure if noise spheres will capture any crypto-relevant correlations, but it seems worth investigating. The reference to the article on noise spheres and other graphical methods for testing PRNGs is: Pickover, Clifford A. 1995. "Random number generators: pretty good ones are easy to find." The Visual Computer (1995) 11:369-377. - --Rob - --- [This message has been signed by an auto-signing service. A valid signature means only that it has been received at the address corresponding to the signature and forwarded.] -----BEGIN PGP SIGNATURE----- Version: 2.6.2 Comment: Gratis auto-signing service iQBFAwUBMTwF5ioZzwIn1bdtAQG/ogF5AdudaHeEb+b2eOWs/XA3ZCIYGKrW1alg abs4UNS5OC2jjqr5UPfrVq5LB8lMwLS7 =OjB4 -----END PGP SIGNATURE-----