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Make Wi-Fi peer rebinding atomic

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jack
2026-07-12 11:15:09 -04:00
parent 338c487ef9
commit b87239cc86
4 changed files with 151 additions and 23 deletions
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docs/NOISE_PEER_ID_BINDING.md
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@@ -18,7 +18,10 @@ validation succeeds. A Wi-Fi discovery identity is not destructively rebound
from a self-signed announce. A direct announce may start the canonical
handshake, but the alias is promoted only when the exact, still-active socket
delivers the Noise frame that completes bound authentication. A peer-ID-only
or stale-socket callback cannot authorize that rebind.
or stale-socket callback cannot authorize that rebind; the final
expected-socket comparison and alias mutation are atomic with socket replacement.
Promotion also refuses to displace a different live socket already authenticated
under the canonical peer ID.
Leave packets use the existing signed wire format and are accepted only when
the signature matches the key learned from a verified announcement. Invalid or