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Re: [TLS] Server time

Martin Thomson <martin.thomson@gmail.com> Mon, 06 April 2015 16:14 UTC

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Date: Mon, 06 Apr 2015 09:13:58 -0700
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From: Martin Thomson <martin.thomson@gmail.com>
To: Peter Gutmann <pgut001@cs.auckland.ac.nz>
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Subject: Re: [TLS] Server time
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On 6 April 2015 at 05:45, Peter Gutmann <pgut001@cs.auckland.ac.nz> wrote:
> Using TLS as a pseudo-NTP source makes about as much sense as using HTTP as a
> pseudo-NTP source, which has happened a number of times in the past.  TLS is a
> means of building a secure tunnel from A to B, not a kludgy way of avoiding
> use of NTP.


Yes, this is right.  There's nothing inherently wrong with using a
HTTP server that you trust to have good time for a little sanity
checking.  That said, it doesn't make any sense to use arbitrary
servers.

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