> The simple(-minded) idea is that everybody receives everybody's email, but > can only read their own. Since everybody gets everything, the metadata is > uninteresting and traffic analysis is largely fruitless.
Some traffic analysis is still possible based on just message originator. If I see a message from A, and then soon see messages from B and C, then I can perhaps assume they are collaborating. If I A's message is significantly larger then the other two, then perhaps they're taking some kind of vote. So while it's a neat hack, I think the claims are overstated. /r$ -- Principal Security Engineer Akamai Technology Cambridge, MA _______________________________________________ The cryptography mailing list email@example.com http://www.metzdowd.com/mailman/listinfo/cryptography