Re: [quicwg/base-drafts] Change Packet Number Gap to Packet Number Offset (#1307)

MikkelFJ <notifications@github.com> Fri, 20 April 2018 20:34 UTC

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Subject: Re: [quicwg/base-drafts] Change Packet Number Gap to Packet Number Offset (#1307)
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> You would be better off leaving the PN in clear text.
That was also my original intend, but it does offer privacy because it is unique per CID and there is no visible gap to be compared across CID's (modulo NAT rebinding). As to obfuscation, if seeded with an unguessable value, and filtered for the zero case, it would not be unbreakable, but neither would it be very trivial to make use of in a busy switch. So it comes down to how much you wan't to harden against ossification - if the answer is "very" then full PNE is the only way.

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