A.3 CK’ and IK’ derivation function

33.5013GPPRelease 18Security architecture and procedures for 5G SystemTS

When deriving CK’ and IK’ then the KDF of TS 33.402 [11] clause A.2 shall be used with the following exception: the serving network name (specified in clause 6.1.1.4) shall be used as the value of access network identity (P0).