On Dec 21, 2007, at 11:15 AM, zooko wrote: > On Dec 19, 2007, at 5:28 PM, David Barrett wrote: > [...] >> "There is no way to know who uploads a file, nor who downloads it," a >> spokesperson says. > > Unfortunately, the above claim is almost certainly untrue. I would > be interested in hearing why this anonymous spokesperson thought that > this claim was true.
Yeah, but reading about this "new" idea must have given you a nice feeling of deja vu, right? :) For the sake of completeness, it is possible to do this but I have serious doubts that this is really what is happening. Private publication is pretty easy, using something not too far removed from a simple mix network to push data blocks out and then once they reach the end of the mix chain the final node forwards the blocsk on to their proper place within the DHT. For the download side you need to use private information retrieval: create PIR request tickets and send them out to the data storage nodes, with the data being combined on the client side. For bonus points, there is even a way to do this that only requires the downloader to pull down 1X of the data file but still prevent all but a complete collusion among the data servers from being able to know what was actually downloaded. Jim _______________________________________________ p2p-hackers mailing list [email protected] http://lists.zooko.com/mailman/listinfo/p2p-hackers
