Section: 28.7.11 NAI format for CP-PRUK ID
Content: The NAI format for CP-PRUK ID shall have the form username@realm as specified in clause 2.2 of IETF RFC 7542 [126]. The realm part shall be in the form: "prose-cp.5gc.mnc<MNC>.mcc<MCC>.3gppnetwork.org" The username part of the NAI shall take one of the following forms: "rid<routing indicator>.pid<CP-PRUK ID*>" - the <routing indicator> part is the "Routing Indicator" as specified in clause 2.2B. - the <CP-PRUK ID*> part is the hexadecimal representation of the CP-PRUK ID* specified in clause A.3 of 3GPP TS 33.503[ Security Aspects of Proximity based Services (ProSe) in the 5G System (5GS) ]  [142]. The maximum length of a CP-PRUK ID in NAI format is 254 octets.