Re: [TLS] WGLC for draft-ietf-tls-ticketrequests

Eric Rescorla <ekr@rtfm.com> Mon, 03 February 2020 04:43 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Sun, 2 Feb 2020 20:42:55 -0800
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To: Nico Williams <nico@cryptonector.com>
Cc: "<tls@ietf.org>" <tls@ietf.org>
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Subject: Re: [TLS] WGLC for draft-ietf-tls-ticketrequests
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On Sun, Feb 2, 2020 at 11:04 AM Nico Williams <nico@cryptonector.com> wrote:

> On Sun, Feb 02, 2020 at 09:08:17AM -0800, Eric Rescorla wrote:
> > I'm sorry to say that I'm not that sympathetic to this position. I
> > appreciate that it's inconvenient for Postfix to have frequent writes
> > to the ticket cache, but what you propose to do is hoist this
> > implementation idiosyncracy into the specification, and I don't think
> > that that's a good tradeoff, both for complexity and because the
>
> We've done this a lot though, haven't we.  For example, we've striven to
> avoid reconnects because SChannel can't really handle them.
>

When we designed TLS 1.3, we paid a lot of attention to it being a drop-in
replacement for TLS 1.2. This required some tradeoffs. Given that this
issue already existed in TLS 1.2, I don't really see that that rationale
applies here.

-Ekr