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Re: [TLS] ChaCha and IVs

Adam Langley <agl@google.com> Tue, 04 March 2014 23:19 UTC

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References: <53160513.20703@bbn.com> <1393955839.20861.20.camel@dhcp-2-127.brq.redhat.com> <53161BA7.3070405@drh-consultancy.co.uk> <CAL9PXLzMiq-WsaAO8Q=kWqbQ3taw-xtuNw_ffuZxjFUXCEEG9A@mail.gmail.com> <2A0EFB9C05D0164E98F19BB0AF3708C711EFC395B0@USMBX1.msg.corp.akamai.com>
From: Adam Langley <agl@google.com>
Date: Tue, 04 Mar 2014 18:18:56 -0500
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To: "Salz, Rich" <rsalz@akamai.com>
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Subject: Re: [TLS] ChaCha and IVs
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On Tue, Mar 4, 2014 at 6:11 PM, Salz, Rich <rsalz@akamai.com> wrote:
> For eight bytes.  Shrug, okay, your battle (if, in fact, it is; Wan-Teh could be rightr).

8 bytes is ~0.6% of bandwidth assuming that one is sizing records to
packets. It's not huge, but it's not trivial.

> Your company may not care about FIPS, but many TLS users/providers do.

I understand, but I'm quite happy to apply pressure to FIPS to be
reasonable here.


Cheers

AGL

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