Re: [TLS] WGLC for draft-ietf-tls-cross-sni-resumption

Stephen Farrell <stephen.farrell@cs.tcd.ie> Mon, 19 July 2021 16:38 UTC

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To: David Benjamin <davidben@chromium.org>
Cc: Ryan Sleevi <ryan-ietftls@sleevi.com>, "Salz, Rich" <rsalz=40akamai.com@dmarc.ietf.org>, "TLS@ietf.org" <tls@ietf.org>
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From: Stephen Farrell <stephen.farrell@cs.tcd.ie>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/tls/Gb-DkoDEa2Kfe_oyFY2VtnPQXTE>
Subject: Re: [TLS] WGLC for draft-ietf-tls-cross-sni-resumption
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Hiya,

On 19/07/2021 17:35, David Benjamin wrote:
> We need to*both*  not add new tracking vectors*and*  mitigate the existing
> ones. Doing either one on its own is not useful. That means if the existing
> mitigation for the existing vector applies just as well to this new
> feature, we have not added a new vector.

I think that clarifies where we disagree, thanks - i'm
not convinced that our existing mitigations for tracking
via the web, or otherwise, are anywhere near sufficient.

S.