Operations 702 and 704 could include generating a first time stamp indicating a time when the first security key is generated and associating the first time stamp with the first safety key. In yet another embodiment, different AUSF instances could also be utilized in the HPLMN to run major authentication for different access sorts. FIG. 5 is a block diagram illustrating elements of a public land cellular network PLMN node (e.g., an AUSF node 600) of a communication network configured to provide cellular communication according to embodiments of inventive concepts. FIG. Four is a block diagram illustrating components of an electronic device four hundred (additionally referred to as a terminal, a cellular terminal, a mobile communication terminal, a wireless communication device, a wireless terminal, a wireless device, a wireless communication terminal, a wired device, person tools, UE, a person equipment node/terminal/device, and so on.) configured to provide communication according to embodiments of inventive concepts. FIG. 5 is a block diagram illustrating elements of an AMF configured to present communication in accordance to embodiments of inventive concepts. Operations of the digital device 400 (implemented utilizing the structure of the block diagram of FIG. 4) will now be mentioned with reference to the movement chart of FIG. Eight according to some embodiments of inventive concepts.

Operations of an AUSF node 600 (applied utilizing the construction of FIG. 6) will now be mentioned with reference to the circulation chart of FIG. 7 according to some embodiments of inventive concepts. In some unspecified time in the future in time, the UDM 300 in the home PLMN might resolve to use the SoR characteristic to ship a new or up to date PLMN most well-liked list to the digital device 400. The UDM 300 might send a message protection request (e.g., a SoR protection request or a UPU safety request, etc.) to the AUSF 600 in the house PLMN. Returning to FIG. 7, in operation 716, processing circuitry 603 may use the newest security key to protect the message in the message safety request. As previously indicated, the UDM 300 in the home PLMN might decide to use the SoR function to deliver a new or updated PLMN preferred list to the digital device 400. The UDM 300 might ship a message protection request (e.g., a SoR safety request or a UPU protection request, and many others.) to the AUSF node 600. In operation 712, the processing circuitry 603 could receive, by way of the network interface 607, a message protection request. In operation 704, the processing circuitry 603 might store the first safety key.

The processing circuitry in operation 702 may generate a first safety key (i.e., a KAUSF key). The electronic device 400 may include a network interface 401 coupled to processing circuitry 4033 and configured to provide communications with a base station(s) and will embrace different interfaces (such as a user interface) coupled with processing circuitry 403, to talk with and/or digital device may be integrated in a car. When the electronic device four hundred is a wireless device, the wireless device could also be provided, for example, as mentioned beneath with respect to wireless device 4110 of FIG. 12.) As proven, when the electronic device four hundred is a wireless electronic device, the wireless digital device might include an antenna 409 (e.g., corresponding to antenna 4111 of FIG. 12), and transceiver circuitry 407 (also referred to as a transceiver, e.g., corresponding to interface 4114 of FIG. 12) including a transmitter and a receiver configured to present uplink and downlink radio communications with a base station(s) (e.g., corresponding to network node 4160 of FIG. 12) of a radio entry network. As mentioned herein, operations of the AMF could also be carried out by processor 503 and/or network interface 507. Modules could also be stored in reminiscence 505, and these modules could present instructions in order that when directions of a module are executed by processor 503, processor 503 performs respective operations (e.g., operations mentioned beneath with respect to Example Embodiments).

The resolution to such a situation may be implementation particular because the AUSF node 600 is in control of both procedures (SoR and Major Authentication), and therefore might for instance stall some procedures so as to reduce the threat of mismatch of the KAUSF key between the electronic device 400 and the home PLMN. In the scenario illustrated in FIG. 2, there is a threat of race situation and KAUSF desynchronization should each the visited PLMN1 and visited PLMN2 trigger a Major Authentication procedure at a close or overlapping time interval. Moreover, while the parts of network node 4160 are depicted as single boxes located within a larger box, or nested inside multiple boxes, in apply, a network node might comprise a number of different bodily components that make up a single illustrated part (e.g., device readable medium 4180 could comprise multiple separate arduous drives in addition to multiple RAM modules). In operation 700, processing circuitry 603 might obtain, through network interface 607, a first registration and authentication request from a first PLMN to register and authenticate the digital device 400. The processing circuitry 603 may authenticate the digital device 400 based mostly on the SUPI (subscriber everlasting identifier) of the digital device 400 in the first registration and authentication request.

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