a solution on the horizon to counteract detecting temperature through clock skew (on Tor Hidden Services)?

coderman coderman at gmail.com
Fri May 18 20:50:34 UTC 2007


On 5/14/07, Wes Felter <wesley at felter.org> wrote:
> ... Power analysis is not the
> same thing as temperature-induced clock skew.

i've wondered about using a frequent ntpdate to reduce skew, and if
that is not sufficient, what about a modified client that uses
adjtime() or settimeofday() with random offsets (+/- within some
tolerance) to gently randomize on a few minute schedule?

is there a public tool to analyze clock skew like that mentioned in
the attacks to determine if such workarounds are effective?

best regards,



More information about the tor-talk mailing list