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Re: [TLS] Pull Request: Removing the AEAD explicit IV

Colm MacCárthaigh <colm@allcosts.net> Thu, 19 March 2015 04:24 UTC

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Date: Wed, 18 Mar 2015 21:24:20 -0700
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From: Colm MacCárthaigh <colm@allcosts.net>
To: Watson Ladd <watsonbladd@gmail.com>
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Subject: Re: [TLS] Pull Request: Removing the AEAD explicit IV
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Why would the extension break?

On Wed, Mar 18, 2015 at 9:21 PM, Watson Ladd <watsonbladd@gmail.com> wrote:
> I'm afraid that by radically changing the record layer we may be
> working ourselves into a corner. If we're going to make a change this
> radical, why not make equally radical changes to simplify the protocol
> further if that's possible? I'm also not sure what we're supposed to
> be gaining from this change: while it's true that we don't need to
> send the explicit nonce, I don't know that we are losing anything from
> having it. Yes, I know the ChaCha draft does it a seemingly more
> sensible way, but the last thing we need is to further increase the
> codesize of TLS implementations.
>
> I do know that a recently implemented extension to FreeBSD won't work
> anymore without some changes. (see
> http://2015.asiabsdcon.org/timetable.html.en#P7A for an abstract)
>
> Sincerely,
> Watson Ladd



-- 
Colm

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