FIELD: wireless communication equipment.
SUBSTANCE: invention relates to wireless communication. First network device (MME) of first communication network receives request (RAND), generates the first PFS parameter (PFS1), receives the first verification code (VC1A) for the first PFS parameter (PFS1), and sends request (RAND), the first PFS parameter (PFS1) and first verification code (VC1A) per communication device (ME), which in its turn receives request (RAND), first PFS parameter (PFS1) and first verification code (VC1A), redirects request or its derived element to identification module (USIM), receives at least one resulting parameter (CK/IK, RES) from module (USIM) identification as response, determines, based on resulting parameter (CK/IK, RES), whether first PFS parameter (PFS1) is genuine, and if determination is successful, generates and sends second PFS parameter (PFS2) to the first network device, which in turn checks second PFS parameter (PFS2).
EFFECT: technical result is to improve security of communication between communication device and communication network.
40 cl, 16 dwg
