name: PRUK
full_form: Prose Remote User Key
context: message to the relay. UE includes PRUK ID of its PRUK, Nonce_1 (a random number) and a DKSI (this gives the values of the Key Set Identifier for a security context created from the PRUK). It also calculates PRK using PRUK and the Relay ID. 4. Relay sends the received PRUK ID and its Relay ID to the PKMF. 5: If the PKMF does not recognize the PRUK ID, it sends an error message to the Relay indicating that the PRUK ID is unknown. The Relay conveys the message to the UE. 6: When the UE receives the error message, it tries to fetch a new PRUK from the PKMF. If this is successful, the UE starts over from step 3 with the new PRUK ID. 7: If fetching a new PRUK is not successful (e.g. the UE is out of coverage), the UE sends the Direct Communication Request with UE identity, e.g. IMSI instead of the PRUK ID. The message also includes Nonce_1 and DKSI. 8.The Relay sends a message to get ProSe Relay Key to the PKMF but now with the UE identity, e.g. IMSI. 9: When the PKMF receives the "" it
description: PRUK (Prose Remote User Key) is a parameter used in ProSe (Proximity Services) for secure communication between a UE and a Relay. It is utilized to derive a PRK (ProSe Relay Key) and is associated with a specific security context, identified by a DKSI (Key Set Identifier).
explanation: The provided text explicitly describes PRUK as a parameter used in ProSe for secure communication. It details its function in deriving another key (PRK) and its association with a specific security context, confirming its role as a parameter within the system.
section_title: 8.1.7.2.2	Procedure when PRUK is not recognized at PKMF
biotag_Context: O,O,O,O,B-Device,O,B-Parameter,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,I-Parameter,I-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,B-Parameter,B-Parameter,O,O,O,B-Parameter,O,O,O,O,O,O,B-Network Function,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,B-Device,O,O,O,O,O,B-Device,O,O,B-Message,I-Message,I-Message,O,B-Device,O,O,B-Parameter,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Service,O,O,O,O,B-Network Function,O,O,O,O,B-Device,O,O,O,O,O,O,B-Network Function,O,O,O,O
biotag_Description: B-Parameter,O,O,O,O,O,O,O,O,O,B-Service,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O