Re: [TLS] WG adoption + early code point assignment: draft-mavrogiannopoulos-chacha-tls

Ilari Liusvaara <ilari.liusvaara@elisanet.fi> Wed, 27 May 2015 09:10 UTC

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Date: Wed, 27 May 2015 12:10:05 +0300
From: Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
To: Sean Turner <turners@ieca.com>
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Subject: Re: [TLS] WG adoption + early code point assignment: draft-mavrogiannopoulos-chacha-tls
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On Tue, May 19, 2015 at 05:31:59PM -0400, Sean Turner wrote:
> All,
> 
> This message serves two purposes:
> 
> 1) It is the WG call for adoption of:
> 
> http://datatracker.ietf.org/doc/draft-mavrogiannopoulos-chacha-tls/
> 
> This draft specifies the use of the ChaCha stream cipher with Poly1305
> in the TLS and DTLS protocols.  The WG needs this draft to specify code
> points in support of the recent MTI consensus call (see 
> http://www.ietf.org/mail-archive/web/tls/current/msg16343.html).
> If you object to the adoption of this draft as a WG item, please respond
> to the list indicating why by 20150602.

Adopt.

> 2) It is a request for an early code point assignment:
> 
> We have a request for an early code point assignment for the cipher
> suites listed in the draft.  If you have a concern with an early code
> point assignment for the ciphers listed in this draft, please respond
> to the list indicating why by 20150602.  

I agree that the list of codepoints is bit broad for initial assignment.
Thomson's list (DHE_RSA, ECDHE_RSA, ECDHE_ECDSA, PSK, ECDHE_PSK) looks
reasonable. No concerns on early assignment on those.

Reading the Editor's Copy, the spec looks deployable. No concerns there.

Regarding nonce generation method, I did some programming experiments
with that, and I have no cocerns there.


-Ilari