METHOD AND DEVICE FOR SECURITY PROVISION Russian patent published in 2022 - IPC H04W12/106 H04W12/108 H04W12/33 H04W12/431 H04W12/122 

FIELD: data protection.

SUBSTANCE: invention relates to means for providing security of a non-access stratum (hereinafter – NAS) message. A value of the first parameter indicating an access technology used for the transmission of NAS message is determined using a device. The first parameter is an input parameter used, when security provision for the transmission of NAS message is performed. Security provision for NAS message is performed using the device based on the first parameter, NAS key and NAS COUNT corresponding to the access technology used for the transmission of NAS message, wherein the specified device is a terminal device, a microcircuit in the terminal device or a base network device.

EFFECT: increase in data security during the transmission via NAS line of the connection between a terminal device and AMF node.

27 cl, 16 dwg