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

[MikkelFJ <[e-mail]>]

@nibanks this looks a bit like my segmented packet numbers proposal but not that this proposal has a fixed offset per connection ID and that a connection ID is replaced before that offset is exhausted.

This avoids any linkage other than NAT rebinding.

https://github.com/quicwg/base-drafts/issues/1105

You can further mutilate the clean packet number sequence with a reversible permutation

http://stackoverflow.com/a/12996028
```
   uint32_t x;

    x = ((uint32_t)(size_t)key) ^ (uint32_t)(MY_SEED);

    x = ((x >> 16) ^ x) * 0x45d9f3bUL;
    x = ((x >> 16) ^ x) * 0x45d9f3bUL;
    x = ((x >> 16) ^ x);
    return x;
```

And you can further encrypt that permuation using simple XOR magic - apparently IPSec style.

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