Section: 5.13 Requirements on NSSAAF
Content: The Network slice specific and SNPN authentication and authorization function (NSSAAF) shall handle the Network Slice Specific Authentication requests from the serving AMF as specified in clause 16.The NSSAAF shall also support functionality for access to SNPN using credentials from Credentials Holder using AAA Server as specified in clause I.2.2.2. The NSSAAF is responsible to send the NSSAA requests to the appropriate AAA-S. The NSSAAF shall support AAA-S triggered Network Slice-Specific Re-authentication and Re-authorization and Slice-Specific Authorization Revocation and translate any AAA protocol into a Service Based format. NSSAAF shall translate the Service based messages from the serving AMF or AUSF to AAA protocols towards AAA-P/AAA-S.