One ask triggering another : How do you do a timing attack ? What are the necessary steps to be successfull in such a thing ? Where can i find some documented timing attack scenario ?
2013/4/4 Alexandre Guillioud <guillioud.alexan...@gmail.com> > My guess is that the Key size is configured right into the node's source > code. > If you apply multiple key size accross the network, you're exposed with > the smallest encryption key of the circuit. > Except for one thing : if somebody can break one of the circuit's key, > depending of the node number into the circuit, he can be able to read your > message. But without a timing attack or an attack on all the circuit's keys > (destination/from adresses datas are encapsulated one into another), he > can't know the entry, exit node or target adresses at the same time. > > I'm a begginer here, don't take my words for truth ;) > > > Le jeudi 4 avril 2013, Bernard Tyers a écrit : > >> That's what I was thinking, I just didn't know if there was another >> reasons. >> >> I guess the key size is configured on the Tor node? I haven't found it >> anywhere in the configuration (I'm using TBB on OS X). >> >> Is it possible to increase the size of the key, if say I've got a big >> server running as a node? >> >> If there are nodes using different length keys, is the security relying >> on the node with the smallest key length? >> >> Thanks. >> >> Bernard >> >> ---- >> Written on my small electric gadget. Please excuse brevity and (possible) >> misspelling. >> >> Alexandre Guillioud <guillioud.alexan...@gmail.com> wrote: >> >> >The bigger the key is, the longer (cpu cycle) it take to encrypt/decrypt >> ? >> > >> >Le jeudi 4 avril 2013, Bernard Tyers a écrit : >> > >> >> Hi, >> >> >> >> Is there a reason 1024 bit keys, instead of something higher is not >> used? >> >> Do higher bit keys affect host performance, or network latency? >> >> >> >> >> >> Thanks, >> >> Bernard >> >> >> >> >> >> ---- >> >> Written on my small electric gadget. Please excuse brevity and >> (probable) >> >> misspelling. >> >> >> >> George Torwell <bpmcont...@gmail.com <javascript:;>> wrote: >> >> >> >> a second guess would be going after 1024 bit keys. >> >> there is also a video on youtube from a recent con about the >> feasibility of >> >> factoring them, <"fast hacks" or something like that> at the end, jacob >> >> applebaum asks about it and they advise him to use longer keys or >> elliptic >> >> curves crypto. >> >> >> >> _______________________________________________ >> >> tor-talk mailing list >> >> tor-talk@lists.torproject.org <javascript:;> >> >> https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-talk >> >> >> >_______________________________________________ >> >tor-talk mailing list >> >tor-talk@lists.torproject.org >> >https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-talk >> _______________________________________________ >> tor-talk mailing list >> tor-talk@lists.torproject.org >> https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-talk >> > _______________________________________________ tor-talk mailing list tor-talk@lists.torproject.org https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-talk
