Re: Secdir early review of draft-ietf-babel-dtls-03

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Hi Juliusz,

TLS 1.3 changed the handshake, making false start irrelevant.
In 1.3, the first flight of server-client packets contains the Finished message,
so there is no opportunity to start early as there is in 1.2.

https://tools.ietf.org/html/rfc6347#section-4.2.4
https://tools.ietf.org/html/draft-ietf-tls-dtls13-30#section-5.6

David

On Sat, Feb 2, 2019 at 10:17 AM Juliusz Chroboczek <jch@xxxxxxx> wrote:
>     6) AppA - I think you might need to tweak the last sentence in light 1.3?

> Unfortunately DTLS 1.3 hasn't been published yet,

May I most humbly request an explanation?  Is that about TLS False Start
being made obsolete by TLS 1.3?

(Note that I'm not particularly convinced about this paragraph, since
I don't think that paying one extra RTT at neighbour acquisition is at all
prohibitive.)

-- Juliusz

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