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Re: [TLS] Comments on EndOfEarlyData

Eric Rescorla <ekr@rtfm.com> Tue, 16 May 2017 19:10 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Tue, 16 May 2017 12:04:57 -0700
Message-ID: <CABcZeBPGMK005HTVhQOujPheXUvZKfOQdz5MwyQs1o80mvArzQ@mail.gmail.com>
To: Nico Williams <nico@cryptonector.com>
Cc: Richard Barnes <rlb@ipv.sx>, "<tls@ietf.org>" <tls@ietf.org>, Britta Hale <britta.hale@item.ntnu.no>
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Subject: Re: [TLS] Comments on EndOfEarlyData
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On Tue, May 16, 2017 at 11:30 AM, Nico Williams <nico@cryptonector.com>
wrote:

> On Tue, May 16, 2017 at 01:43:32PM -0400, Richard Barnes wrote:
> > As has been pointed out elsewhere, other key changes are signaled with a
> > handshake message (KeyUpdate), so using a handshake message seems more
> > natural from a protocol point of view.
>
> And as long as the record type goes in the clear, sending these sorts of
> messages all with the same record type (handshake) seems best from a
> traffic analysis p.o.v.
>

Actually at this point in the handshake the record type is encrypted.

-Ekr


> Nico
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