docs: update SMP protocol (#1900)

Co-authored-by: Evgeny @ SimpleX Chat <259188159+evgeny-simplex@users.noreply.github.com>
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Evgeny
2026-09-30 08:10:35 +01:00
committed by GitHub
co-authored by Evgeny @ SimpleX Chat
parent 267e2e0727
commit e2df2e1b7c
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@@ -1120,6 +1120,8 @@ When the client receives PKEY response it MUST validate that:
- the fingerprint of the received certificate matches fingerprint in the router address - it mitigates MITM attack by proxy.
- the router session key is correctly signed with the received certificate.
`smpVersionRange` in `PKEY` is not signed.
The proxy router may respond with error response in case the destination router is not available or in case it has an earlier version that does not support proxied commands.
#### Send command via proxy