Arnaud Taddei <arnaud.taddei=40broadcom....@dmarc.ietf.org>writes:

>There is a big difference between
>
>patching an endpoint to a variation of TLS1.2 which is meant to work in a ’
>TLS1.2 designed environment”
>
>Vs
>
>patching an endpoint to TLS1.3 in an environment that was ’TLS1.2 designed
>environment’

Yup, and that's the intent of the draft, since some industries are going to be
living in a TLS 1.2 environment for some time (as well as TLS 1.0, but I'm not
touching that one), this will try and make it the least problematic TLS 1.2
environment, i.e. it addresses well-known problem areas without making any
significant changes - it was explicitly written not to include anything new 
(new algorithms, new signature types, new hashes, whatever), it's all existing
algorithms that have been around forever, just with minor tweaks like sending
the full domain parameters to allow verification of the DH values, which have
been a problem in the past because of the PKCS #3-based origins of SSLv2 where
this came from.

Peter.

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