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Re: STARTTLS & EHLO

Tony Finch <dot@dotat.at> Wed, 28 January 2009 14:41 UTC

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Date: Wed, 28 Jan 2009 14:40:57 +0000
From: Tony Finch <dot@dotat.at>
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To: Tony Hansen <tony@att.com>
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Subject: Re: STARTTLS & EHLO
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On Tue, 27 Jan 2009, Tony Hansen wrote:
>
> Ahhh, there's where the difference in interpretation lays. One
> interpretation is that the remote side is required to forget the value
> that was passed with the original EHLO command. Another interpretation
> is that it further must forget that an EHLO command was issued at all.
>
> I guess I can see either interpretation of the STARTTLS spec.

As far as I can see it is clear. "The server MUST discard any knowledge
obtained from the client [...] which was not obtained from the TLS
negotiation itself. The client MUST discard any knowledge obtained from
the server [...] which was not obtained from the TLS negotiation itself."

The parts which I have elided are just examples, because they start "such
as".

Tony.
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