5G Authentication

5g security architecture

Lets get in the 5G authentication :

The purpose of the primary authentication and key agreement procedures is to enable mutual authentication between the UE and the network and provide keying material that can be used between the UE and the serving network in subsequent security procedures. The keying material generated by the primary authentication and key agreement procedure results in an anchor key called the KSEAF provided by the AUSF of the home network to the SEAF of the serving network.

The good thing in the 5G is that the get the security keys for non 3GPP netwroks also there is no need to rerun the authentication process for the non-3GPP networks.

UE and serving network shall support EAP-AKA' and 5G AKA authentication methods.

Fig shows the overview :-

5G-AKA prcoess in defined in the 3748 and basic overview is given the below

for more details youcan reffer the  3GPP 33.501 Security architecture and procedures for 5G System