On Thursday 17 September 2015 03:27:22 Peter Gutmann wrote:
> Viktor Dukhovni <ietf-d...@dukhovni.org> writes:
> >Explicit profiles make some sense.  They need not be defined by the
> >TLS WG per-se, it might be enough for the TLS specification to
> >reference an IANA profile registry, with the TLS-WG defining a
> >"base" profile.  Then other WGs (including the[ TLS WG) can define
> >additional profiles.
> That would be good, so the base spec could contain text like "This
> document describes every possible option that the protocol can
> support.  It is not expected that TLS applications implement every
> one of these options, since many will be inappropriate or unnecessary
> in many situations.  Profiles for specific situations like web
> browsing, secure tunnels, IoT, embedded devices, and SCADA use can be
> found  at ...".

You can count on one hand the Mandatory-to-Implement ciphersuites.

It's quite obvious that if you don't support anything but non-export RSA 
key exchange, you don't need to be able to parse Server Key Exchange 
messages...
-- 
Regards,
Hubert Kario
Quality Engineer, QE BaseOS Security team
Web: www.cz.redhat.com
Red Hat Czech s.r.o., Purkyňova 99/71, 612 45, Brno, Czech Republic

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