On Wednesday 23 January 2008 23:10, Michael Rogers wrote: > Matthew Toseland wrote: > >> But the samples for a weighted coin are independent, whereas with a hop > >> counter they're not, so given enough requests the attacker always learns > >> more from a weighted coin. > > > > Why are samples for a hop counter dependant? > > The hop counter is deterministic - all the originator's requests should > have the same HTL, so the attacker doesn't learn anything from > additional positive samples. But with a weighted coin every linkable > sample gives the attacker additional information.
Not in terms of predecessor samples afaics. The only new information we get is how many requests have survived this far. And beyond a certain distance that presumably just complicates the underlying signal (proportion of requests likely to come to me if X is the originator) ??? > > Cheers, > Michael
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