| Issue | Likely Cause | Solution | |--------|----------------|-----------| | Code expired | Took too long to exchange | Re-initiate pairing flow | | Code already used | Replay attempt | Always generate fresh code | | Wrong client ID | Code issued for different app | Verify client registration | | Incorrect redirect URI | Mismatch with registered URI | Check URI exact match |
| Attribute | Detail | |-----------|--------| | | Authorize new controllers or renew keys | | Generated by | Already-paired controller | | Validated by | HAP accessory | | Lifespan | 5 minutes, single use | | Transmission | TLS (HTTP/2) over TCP port 44323 | | Key size | 256-bit (ECDH) | hap 5.1 authorization code
: The codes are often time-sensitive, meaning they expire after a short period. This feature significantly reduces the risk associated with code interception or theft, as the code becomes obsolete shortly after its generation. | Issue | Likely Cause | Solution |
Do not photograph the label containing your HAP 5.1 authorization code and save it to a public cloud album. If an attacker gains access to that image and is within Bluetooth/Wi-Fi range of your accessory, they can pair their own device and take control of your lock/camera. If an attacker gains access to that image