Re: Packet Number Encryption outside of AEAD

Ian Swett <ianswett@google.com> Thu, 26 July 2018 16:52 UTC

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From: Ian Swett <ianswett@google.com>
Date: Thu, 26 Jul 2018 12:52:32 -0400
Message-ID: <CAKcm_gP2nmP1_xAd9zobPHKmmAxqisCx2sr5+1jgXQC=3XZQbw@mail.gmail.com>
Subject: Re: Packet Number Encryption outside of AEAD
To: =?UTF-8?Q?Mikkel_Fahn=C3=B8e_J=C3=B8rgensen?= <mikkelfj@gmail.com>
Cc: IETF QUIC WG <quic@ietf.org>, "Deval, Manasi" <manasi.deval@intel.com>, borisp@mellanox.com
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That seems like a reasonable suggestion to me.

Adding Boris and Manasi to see if they also think it'll make hardware
offload easier?

On Thu, Jul 26, 2018 at 2:22 AM Mikkel Fahnøe Jørgensen <mikkelfj@gmail.com>
wrote:

> I created the following issue a while ago but go no response, so perhaps
> it should have been discussed on this list:
>
> https://github.com/quicwg/base-drafts/issues/1578
>
> The issues covers the point, but in summary:
>
> If the packet format is kept as it is today, but the packet number is not
> included in the authenticated data when computing the AEAD tag, then the
> decoder need not modify the received packet buffer when decoding the packet
> number. This can lead to more efficient hardware implementations and make
> multi-processor buffer sharing more effective.
>
> Mikkel
>