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Re: Multipath (was: Re: Re-chartering for extension work)

Olivier Bonaventure <olivier.bonaventure@tessares.net> Mon, 16 December 2019 17:29 UTC

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From: Olivier Bonaventure <olivier.bonaventure@tessares.net>
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Subject: Re: Multipath (was: Re: Re-chartering for extension work)
Date: Mon, 16 Dec 2019 18:29:26 +0100
In-Reply-To: <CAN1APdfNyMBzeWKVRQojo4W_mgxXSSwj4X4EvFC9Pfz4bZ+Pdg@mail.gmail.com>
Cc: Lars Eggert <lars@eggert.org>, IETF QUIC WG <quic@ietf.org>, quentin.deconinck@uclouvain.be, Mark Nottingham <mnot@mnot.net>
To: Mikkel Fahnøe Jørgensen <mikkelfj@gmail.com>
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Mikkel,

> On 16 Dec 2019, at 16:42, Mikkel Fahnøe Jørgensen <mikkelfj@gmail.com> wrote:
> 
> ACK across paths could lead to privacy leaks, no?
> 

Since all QUIC packets are encrypted, a passive observer cannot easily determine that acks are exchanged over a specific path. If the size of the acks is a concern, then it is possible to pad QUIC frames to hide the fact that such acks are exchanged.

Olivier


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