[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
Re: a solution on the horizon to counteract detecting temperature through clock skew (on Tor Hidden Services)?
- To: or-talk@xxxxxxxxxxxxx
- Subject: Re: a solution on the horizon to counteract detecting temperature through clock skew (on Tor Hidden Services)?
- From: coderman <coderman@xxxxxxxxx>
- Date: Fri, 18 May 2007 13:50:34 -0700
- Delivered-to: archiver@seul.org
- Delivered-to: or-talk-outgoing@seul.org
- Delivered-to: or-talk@seul.org
- Delivery-date: Fri, 18 May 2007 16:50:46 -0400
- Dkim-signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=UG6WQBKotSeYA8yBdN+PlYp7rwUF31QckgIs2i6DWUc8lYCx+scL4girPDcDRnr1tx7rAELe2rscAcdyda/MjSJq0zkGFAAihPSyWC9bTIrTDyuItx97wKYBdkjWPdCsmO86lCQFMo/QvaFYysjPvDQ+Wx+E4uzHa8J3J4xWXpc=
- Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=pL53Ea3WEtakSp4rQUaGCF/fr3b8L+WvKYZwq+7S6F+ogI1BFssqM8EOTEo1gx2f2Q/wOqxKwAAPV+eD8PNANh8Gjf2q4KsCWieUAkWJ4C2sMtNyQeIODLlJl4a4+YL/bgeUxZCHmwsxGef/ImgQc9BPVtMqvA3T7KQq94XKCnw=
- In-reply-to: <4648CC63.2020904@felter.org>
- References: <20070513231823.0AF6A364E66@nepuweb4.net-publics.de> <4648CC63.2020904@felter.org>
- Reply-to: or-talk@xxxxxxxxxxxxx
- Sender: owner-or-talk@xxxxxxxxxxxxx
On 5/14/07, Wes Felter <wesley@xxxxxxxxxx> 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,