Files
amethyst/commons/src
Claude d06b1c7f2c feat(nip46): rate-limit flooding clients + clean up on logout
Follow-ups to the audit:

- Abuse protection: the signer service now bounds its event queue
  (DROP_LATEST) and rate-limits per author BEFORE decrypting — decryption can
  be an external-signer (NIP-55) IPC round-trip, so a looping or hostile client
  can no longer force one per event or grow the queue without limit. Fixed
  window (default 40 requests / 10s per author, oldest authors evicted). The
  limiter is touched only by the single consumer coroutine, so it needs no
  locking. Covered by a headless test.
- logout now clears the client's persisted metadata/relays too (not just the
  ledger grant), so a disconnected app stops being listened for after restart.

Not changed: get_public_key/ping stay ungated — gating them behind a prior
connect risks breaking clients that discover the pubkey at connect time, and
the pubkey is already public, so the enumeration leak is negligible.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015FHr2mu5SiHwYNR7evYUuF
2026-07-17 15:18:25 +00:00
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