Question: Where does the de-concealment of SUPI from SUCI take place?
Option 1: At the UE
Option 2: At the UDM
Option 3: At the gNB
Option 4: At the AMF
Explanation: The de-concealment of SUPI from SUCI takes place at the Unified Data Management (UDM) function, which is responsible for storing and managing subscriber data. This is because the UDM has access to the Home Network Private Key that is securely stored in the home operator's network, allowing it to decrypt the SUCI and retrieve the SUPI.