Re: [TLS] channel id and oob

Bodo Moeller <> Mon, 21 October 2013 23:27 UTC

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Date: Mon, 21 Oct 2013 19:27:14 -0400
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From: Bodo Moeller <>
To: Dirk Balfanz <>
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Subject: Re: [TLS] channel id and oob
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> We actually don't say anything about keeping the key in session state nor
>> about session resumption. I consider those aspects implementation and
>> configuration issues.
> That's interesting. I was looking for the part in the TLS spec that says
> "thou shall make client certs part of the session state", and indeed
> couldn't find it. But in practice, of course that is what people are doing,
> right? If your TLS terminators didn't make a client cert part of the
> session state, how could you ever resume a session with them and still be
> considered authenticated with that client cert?

In very basic usage of client certificates, a server might be configured to
only ever allow authenticated clients with certificates from a particular
CA to start sessions -- e.g., letting them access intranet content without
having to know which particular client each access is coming from.  In
simple cases like that, there's no need to keep certificate details around
in session state.