At 10:18 AM -0700 5/13/97, Paul Bradley wrote:
The proxies idea however can be extended to censor usenet, usenet traffic, although pretty huge, is not yet too large to be grep`d for keywords (currently around 600mb of traffic a day passes through the newsgroups) before being proxied, so a government can run a server which first checks to ensure the usenet article is not encrypted (this can be done crudely by checking for occurances of common words or by checking the redundancy of the text by attempting to compress it) and if it is encrypted junks it, if it is plaintext, greps it for keywords like "assasination", "anarchy", "porn" etc... then kills the articles that have these words in them, the other articles the government does not want to censor are put on a main server like news.fourth-reich.de and access blocked to all the other news servers.
Obviously you need to stego your message in a post that passes the automatic censor. The important question is what is the minimum data expansion you can get away with? I see an "arms race" in the making. ------------------------------------------------------------------------- Bill Frantz | God could make the world | Periwinkle -- Consulting (408)356-8506 | in six days because he did | 16345 Englewood Ave. frantz@netcom.com | not have an installed base.| Los Gatos, CA 95032, USA