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Re: [TLS] consensus on backwards compatibility changes

Dave Garrett <davemgarrett@gmail.com> Thu, 12 February 2015 22:15 UTC

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From: Dave Garrett <davemgarrett@gmail.com>
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Date: Thu, 12 Feb 2015 17:14:53 -0500
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Subject: Re: [TLS] consensus on backwards compatibility changes
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PR#107 rebased. I believe all comments have all been addressed.

https://github.com/tlswg/tls13-spec/pull/107/files

To recap the changes:
* ClientHello record layer version fixed to {3,1}
* other record layer versions explicitly required to be negotiated version
* note some security considerations & other suggestions from Brian
* some editorial fixups
* cite RC4 prohibition draft in backwards compatibility
* explicitly forbid ciphers <112 bits for backwards compatibility
* added the line:
"If an implementation negotiates usage of TLS 1.2, then negotiation of cipher
suites also supported by TLS 1.3 SHOULD be preferred, if available."


Dave


On Thursday, February 12, 2015 02:42:52 pm Eric Rescorla wrote:
> I have merged PR#105. I am awaiting chair guidance on PR#107.
> 
> -Ekr

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