A !ai (or any typed message) from a trusted, federated node was denied when
it arrived over the radio. The radio half of a node that is also a federation
peer carried no archipelago identity (identity adverts are no longer broadcast
on the public channel), so the trusted_only gate and signature verification
had no key to check the asker against — and the same node showed up as two
contacts (a radio twin + a federation twin).
- bind_federation_twins(): correlate a radio contact with its federation twin
by exact, case-insensitive advert_name and copy the federation peer's
arch_pubkey_hex/did/x25519 onto the radio record. Called from
upsert_federation_peer and refresh_contacts. Ambiguous names (held by >1
federation peer) are skipped. This is only a CANDIDATE key — security is
unchanged: the inbound envelope signature must still verify against it.
- send_message now signs the typed Text envelope (new_signed) so a radio !ai
authenticates against the bound key. A meshcore node merely named like a
trusted node cannot forge the signature, so it is still denied.
Receiver-side verification (handle_typed_envelope_direct) and federation-trust
matching (is_sender_allowed) already existed; this supplies the missing key
binding and signature. Also resolves the radio/federation duplicate-contact
display for same-named nodes.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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