Re: [tor-talk] secure and simple network time (hack)

[Gregory Disney <gregory.disney@xxxxxxxxx>]

It's related to Linux NTP and SRTP.


On Fri, Apr 5, 2013 at 4:26 PM, intrigeri <intrigeri@xxxxxxxx> wrote:

> Hi,
>
> Jacob Appelbaum wrote (19 Jul 2012 23:48:48 GMT) :
> > intrigeri:
> >> So, Jake tells me that ChromeOS will use tlsdate by default, and that
> >> this should solve the fingerprinting issue. Therefore, I assume this
> >> implicitly answer the (half-rhetorical, I admit) question I asked in
> >> March, and I assume there is indeed some fingerprinting issue. So, in
> >> the following I'll assume it's relatively easy, for a close network
> >> adversary (say, my ISP) to detect that I'm using tlsdate.
> >>
>
> > It isn't shipping yet, so we'll see what happens.
>
> I'm told ChromeOS ships it nowadays, so I'm excited at the idea to
> learn more about it, so that we can move forward a bit about the
> fingerprinting issue.
>
> I was not able to find any authoritative information about how they
> run it. Their time sources [1] design doc is quite clearly outdated.
> Where can I find up-to-date information on this topic? I assume one of
> the dozens of Chromius Git repositories [2], but which one?
>
> [1] http://www.chromium.org/developers/design-documents/time-sources
> [2] http://git.chromium.org/gitweb/
>
> Cheers,
> --
>   intrigeri
>   | GnuPG key @ https://gaffer.ptitcanardnoir.org/intrigeri/intrigeri.asc
>   | OTR fingerprint @ https://gaffer.ptitcanardnoir.org/intrigeri/otr.asc
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