公开(公告)号：EP4447511A1

公开(公告)日：2024-10-16

申请号：EP23745905.2

申请日：2023-01-09

申请人： Huawei Technologies Co., Ltd.

发明人： XI, Yan ,  YAN, Xueqiang ,  ZHAO, Mingyu ,  WANG, Yang

IPC分类号： H04W12/033

摘要： This application provides a method for processing data that is in a random access procedure. The method includes: A terminal device sends a first message to an access network device, where the first message includes a first public key of the terminal device, and the first public key is used by the access network device to encrypt a second message that is sent to the terminal device and that is in the random access procedure; and the terminal device receives the second message sent by the access network device. The first public key is a public key in a first public-private key pair of the terminal device, the first public-private key pair further includes a first private key, and the first private key is stored in the terminal device to decrypt the second message. The terminal device sends the first public key of the terminal device to the access network device, so that the access network device can encrypt the second message that is sent to the terminal device and that is in the random access procedure. In this way, network security performance is improved.

公开(公告)号：EP4228202A1

公开(公告)日：2023-08-16

申请号：EP20959157.7

申请日：2020-10-29

申请人： Huawei Technologies Co., Ltd.

发明人： XI, Yan ,  XIONG, Xiaochun

IPC分类号： H04L9/40

摘要： This application provides a man-in-the-middle detection method and apparatus. The method includes: A base station receives, in a first physical frame, a first radio resource control RRC message from user equipment UE; the base station receives a second RRC message from the UE, where the second RRC message includes frame information of a second physical frame, and security protection is performed on the first RRC message and the second RRC message by using an access stratum AS security context established by the UE and the base station; and the base station determines whether the first physical frame matches the second physical frame. According to the man-in-the-middle detection method in embodiments of this application, whether a man-in-the-middle exists in air interface communication is determined by determining whether a physical frame in which the UE sends an uplink message matches a physical frame in which the base station receives the uplink message, to prevent the man-in-the-middle from bypassing detection through a mechanism of the man-in-the-middle and improve a man-in-the-middle detection rate.