Expand description
AppID assigner based on name and credential check metadata.
This assigns a short ID where the most significant four bits are from the credential checking metadata and the remaining bits are a CRC of the name.
32 28 0 bits
+----------+------------------------+
| metadata | CRC(name) |
+----------+------------------------+
The intention is that the CRC makes the short ID generally unique, and the 4-bit metadata indicates the key that was used to verify the app’s signing credential.