[Seat] Re: Comments on draft-fossati-seat-early-attestation-03

[Nathanael Ritz <[e-mail]>]

Hello Usama,

To provide clarity to the WG, can you please cite the specific prose in the
language that proposes a change to the TLS key schedule. Simply copying the
math already present in the standard in order to derive a nonce would not
substantiate the claim you are making. Thanks.

-Nathanael

On Mon, Mar 16, 2026 at 8:09 PM Muhammad Usama Sardar <
[e-mail]> wrote:

> Hi,
>
> Without going into the attacks on this proposal, Section 5.1.1 [0]
> violates the SEAT charter (*emphasis* my own):
>
> The attested (D)TLS protocol extension will not modify the (D)TLS
> protocol itself. It may define (D)TLS extensions to support its goals
> but will *not* modify, add, or remove any existing protocol messages
> or *modify the key schedule*.
>
> Following the discussion in interim meeting, please bring the draft within
> the SEAT charter, or else please propose it in the TLS WG, where such
> changes are appropriate.
>
> Thanks.
>
> Best regards,
>
> -Usama
>
>
> [0]
> https://www.ietf.org/archive/id/draft-fossati-seat-early-attestation-03.html#section-5.1.1
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