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Re: [TLS] Include Speck block cipher?

Eric Rescorla <ekr@rtfm.com> Fri, 18 March 2016 02:47 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Thu, 17 Mar 2016 19:47:04 -0700
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To: Martin Thomson <martin.thomson@gmail.com>
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Cc: klimn@di.uoa.gr, Efthymios Iosifides <iosifidise@gmail.com>, "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] Include Speck block cipher?
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Piling on, I can't see why we would want to do this

-Ekr


On Thu, Mar 17, 2016 at 7:09 PM, Martin Thomson <martin.thomson@gmail.com>
wrote:

> On 18 March 2016 at 12:37, Mike Hamburg <mike@shiftleft.org> wrote:
> > No.  The goal should be to remove ciphers, not add new ones, unless we
> have
> > a really compelling reason.
>
> A necessary, but sufficient set of reasons might include:
>
> 1. thorough cryptanalysis
> 2. advantages over existing ciphers on important metrics like security
> and speed, though this would likely need to be significant at this
> point
> 3. interest in implementation
>
> Speck is 0 from 3.
>
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