[noise] Comments on revision 29

[Jason A. Donenfeld]

On Fri, May 20, 2016 at 11:01 PM, Klaus Hartke <hartke at tzi.org> wrote:
> * I'm using libsodium which provides keyed and non-keyed Blake2b,
> SHA-256, SHA-512, HMAC-SHA-256 and HMAC-SHA-512 but not HMAC-Blake2b.
> Could keyed Blake2b be used instead of HMAC-Blake2b?

I imagine this is a question that will be coming up frequently, since
indeed HMAC-Blake2 implementations in high-level libraries are a bit
unusual while Keyed-Blake2 is more common...