Re: [TLS] Consensus for AEAD IV

Yoav Nir <ynir.ietf@gmail.com> Sun, 17 May 2015 13:41 UTC

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From: Yoav Nir <ynir.ietf@gmail.com>
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Date: Sun, 17 May 2015 16:41:44 +0300
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To: Eric Rescorla <ekr@rtfm.com>
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Subject: Re: [TLS] Consensus for AEAD IV
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> On May 17, 2015, at 4:27 PM, Eric Rescorla <ekr@rtfm.com> wrote:

<snip />

> Note 2: Should the ChaCha draft adopt this change as well, since it's
> already incompatible with the encoding TLS 1.2 uses for GCM?

IMO ChaCha should do the same as GCM in TLS 1.2, and do the new thing in TLS 1.3.  ChaCha20-Poly1305 has experimental running code and should be ready and deployable far earlier than TLS 1.3.  

IOW ChaCha should do like GCM in both versions.

Yoav