[noise] Extensions for forward secrecy and New Hope

[Rhys Weatherley]

I'm working on the updates.  A small terminology question:

On Wed, Aug 31, 2016 at 4:09 PM, Trevor Perrin <trevp at trevp.net> wrote:

>  * extra -> hybrid in a few places
>

The "hybrid" forward secrecy occurs when the two DH algorithms are
combined, but how do we refer to the algorithms themselves in isolation?

A lot of the instances of "extra forward secrecy" in the text are referring
specifically to *_F operations and key values.  It doesn't seem right to
call these "hybrid" as they are one component of the hybrid, not the hybrid
itself.

I've been using "regular"/"extra" or "first"/"second", but neither are very
elegant.  "Classical"/"post-quantum" doesn't really work either because
"25519+448" involves nothing post-quantum, and something like
"SIDHp751+448" would reverse the roles.

Any suggestions?

Cheers,

Rhys.
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