name: TNGF
full_form: Trusted Non-3GPP Gateway Function
context: key stored in UE, and with UNonce and TNonce. 9. The UE responds with a 5G-Challenge containing UNonce, TNonce and MAC2. 10. The TNGF derives an expected MAC2 (XMAC2) using TNGF and with UNonce and TNonce. Compares XMAC2 with the received MAC2. If they match, the UE is authenticated by TNGF. 11. The TNGF derives a fresh Reauth-ID for the UE, e.g. by using TNGF key stored in TNGF, TNGF-ID, TNonce and UNonce. In addition, the TNGF derives a new TNAP key by using the TNGF key stored in TNGF, the TNGF-ID, the TNonce and UNonce values. 12. The TNGF completes the EAP-5G session by sending an EAP-Success packet to UE and the new TNAP key to TNAP2. 13. The UE derives a new Reauth-ID by using the TNGF key stored in UE, TNGF-ID, TNonce and UNonce. If the UE and the TNGF share the same TNGF key, then the Reauth-ID derived independently in the UE and in the TNGF will be the same. In addition, the UE derives also a new TNAP key similarly to the TNGF (as in step 11). 14. The new TNAP key is applied
description: The Trusted Non-3GPP Gateway Function (TNGF) is a network function responsible for authenticating and managing user equipment (UE) access to the 5G core network. It handles key derivation, authentication, and session management, ensuring secure connections between the UE and the network.
explanation: The context describes TNGF's responsibilities in authentication, key management, and session control, which are core functions of a Network Function within telecommunications architectures.
section_title: 6.8.2	Solution details
biotag_Context: O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,B-Network Function,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,B-Network Function,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,B-Network Function,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,B-Device,O,O,O,B-Network Function,O,O,O,O,O,O,O,B-Device,O,O,O,O,B-Network Function,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,B-Network Function,O,O,O
biotag_Description: O,B-Network Function,I-Network Function,I-Network Function,I-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Technology,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O