Ian Goldberg and Dave Wagner have a paper on an implementation of something related to Ross Anderson's paper at: http://www.cs.berkeley.edu/~daw/cs268/ People interested in eternity service protocols etc, might find it interesting. The rewebber is a kind of chaining encrypting web proxy. Web proxies normally accept urls like so: http://http://somewhere.com/blah/ There paper allows you to have http://1231324adefgga1324324adefgga1324324adefgga1324 where 1231324adefgga1324324adefgga1324324adefgga1324 is an encrypted form of "http://somewhere.com/blah/". You can chain this. I didn't notice their paper announced here at the time they wrote it. They have an implementation, but source is not available directly due to export crapola. I guess you'll have to send them email if you want to try it out. They have a sample server up, and the TAZ server seems to work, but the rewebber seemed to be dead when I used it. It looks to me that you could combine eternity servers with rewebbers. Create a rewebber chain pointing at an article in an eternity server. Adam -- Have *you* exported RSA today? --> http://www.dcs.ex.ac.uk/~aba/rsa/ print pack"C*",split/\D+/,`echo "16iII*o\U@{$/=$z;[(pop,pop,unpack"H*",<> )]}\EsMsKsN0[lN*1lK[d2%Sa2/d0<X+d*lMLa^*lN%0]dsXx++lMlN/dsM0<J]dsJxp"|dc`