Files
esp32-hacking/get-started/csi_recv_router/main
user 476a9beb3b fix: Harden HMAC auth, sanitize inputs, throttle NVS writes
- Constant-time HMAC comparison (prevents timing side-channel)
- Add timestamp to HMAC scheme for replay protection (30s window)
  New format: HMAC:<16hex>:<uptime_s>:<cmd>
- Validate HOSTNAME against [a-z0-9-] to prevent UDP stream injection
- Sanitize probe request SSIDs (strip non-printable chars and commas)
- Redact HMAC token from serial log output
- NVS write throttle: max 20 writes per 10s to prevent flash wear
2026-02-14 18:41:21 +01:00
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