Re: [TLS] Status of Cha-Cha/Poly Cipher Suites?

Yoav Nir <ynir.ietf@gmail.com> Sat, 16 May 2015 22:02 UTC

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From: Yoav Nir <ynir.ietf@gmail.com>
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Date: Sun, 17 May 2015 01:02:23 +0300
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Subject: Re: [TLS] Status of Cha-Cha/Poly Cipher Suites?
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Hi, Jeffrey

The algorithm document has just been published: https

What remains for the TLS working group to do is to adopt a draft for ChaCha20-Poly1305 in TLS. There already is a candidate:
https://tools.ietf.org/html/draft-mavrogiannopoulos-chacha-tls-05

Once that’s done, the document can both progress and if needed, people can request early assignment of identifiers. The ciphersuite registry has a “specification required” policy. Strictly speaking, the private draft could be enough - we don’t have to have an RFC, but practically speaking, this document will only get assignment after it is adopted by the WG.

This is a similar procedure to that followed by the IPsecME working group, which has just finished WGLC on the IPsec version of this draft.

Yoav


> On May 17, 2015, at 12:24 AM, Jeffrey Walton <noloader@gmail.com> wrote:
> 
> What is the status of cipher suite values for the CHA-CHA/Poly Cipher suites?
> 
> The Chrome browser is now warning when either AES/GCM or CHA-CHA/Poly
> Cipher suites are not used.
> 
> Lack of the cipher suite values is holding up OpenSSL's implementation. [1]
> 
> If the IETF considers Chrome (26% market share [2]) and Apache/OpenSSL
> based servers (52% market share [3]), then it appears, then the cipher
> suite values are long overdue.
> 
> Assigning the cipher suite values (whether the TLS WG approves of them
> or not) appear to be consistent with RFC 3935:
> 
>   In attempting to resolve the question of the IETF's scope, perhaps
>   the fairest balance is struck by this formulation: "protocols and
>   practices for which secure and scalable implementations are expected
>   to have wide deployment and interoperation on the Internet, or to
>   form part of the infrastructure of the Internet."
> 
> The cipher suites already affects millions to billions of users and devices.
> 
> [1] https://mta.openssl.org/pipermail/openssl-users/2015-March/000866.html
> [2] https://www.netmarketshare.com/browser-market-share.aspx?qprid=0&qpcustomd=0
> [3] http://news.netcraft.com/archives/2014/04/02/april-2014-web-server-survey.html
> 
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