What is AUSF (Authentication Server Function)?

AUSF is an Authentication server function and it is in the home network and performs authentication of the users in the 5G network. AUSF is used for the 5G Authentication process.5G uses three types of Authentication: 5G AKA ( 5G Authentication and key agreement ), EAP AKA ( Extensible Authentication protocol AKA), and EAP TLS ( EAP - transport layer security ). AUSF authenticates UE’s and stores authentication keys.