3GPP 24.501 v20.0.0 — the document's own text
8.2.3.1 Message definition
Taught in 4. Inside TS 24.501, the document at the centre (CT1 — the group that writes what your phone says, overview).
The AUTHENTICATION RESULT message is sent by the AMF to the UE to provide result of EAP authentication of the UE identity. See table 8.2.3.1.1.
Message type: AUTHENTICATION RESULT
Significance: dual
Direction: network to UE
Table 8.2.3.1.1: AUTHENTICATION RESULT message content
| IEI | Information Element | Type/Reference | Presence | Format | Length |
|---|---|---|---|---|---|
| Extended protocol discriminator | Extended protocol discriminator9.2 | M | V | 1 | |
| Security header type | Security header type9.3 | M | V | 1/2 | |
| Spare half octet | Spare half octet9.5 | M | V | 1/2 | |
| Authentication result message identity | Message type9.7 | M | V | 1 | |
| ngKSI | NAS key set identifier9.11.3.32 | M | V | 1/2 | |
| Spare half octet | Spare half octet9.5 | M | V | 1/2 | |
| EAP message | EAP message9.11.2.2 | M | LV-E | 6-1502 | |
| 38 | ABBA | ABBA9.11.3.10 | O | TLV | 4-n |
| 55 | AUN3 device security key | AUN3 device security key9.11.3.107 | O | TLV | 36-n |
NOTE: It is possible for AMFs compliant with version 18.3.0 or 18.3.1 of this specification to send the AUN3 device security key IE with a fixed length of 66 octets.