Re: Explicit measurability in the QUIC wire image (was Re: Packet number encryption)

[Kazuho Oku <[e-mail]>]

2018-02-06 23:54 GMT+09:00 Mikkel Fahnøe Jørgensen <[e-mail]>:
> This idea can be taken further: You can modulate the signal so you use
> multiple packets to encode a zero or a one for half the wave duration. For
> example 1 could be encoded as 0101 over four packets and zero could be
> encoded as 0011 over four packets.
> If there is any reordering, it would show up as an unexpected value in the
> pulse.

That's definitely an option.

Actually, I considered using sin wave (that distributes the error
among 1-bit samples) as an example instead of the square wave.

The primary reason behind my preference to using a square wave is that
it is easier to implement; in fact, emitting a square wave with the
length of 512 packets is as easy as just taking the 9th bit (counting
from LSB) of the packet number (if we forget about the gaps for a
moment).


-- 
Kazuho Oku