公开(公告)号：US20240406722A1

公开(公告)日：2024-12-05

申请号：US18807052

申请日：2024-08-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yinghui Li ,  Weiyu Jiang ,  Bingyang Liu ,  Fei Yang ,  Xinyi Song ,  Xinggui Wu

IPC: H04W12/043 ,  H04W12/041 ,  H04W80/02 ,  H04W84/12

Abstract: Disclosed are a communication system. All nodes in the communication system belong to a same layer 2 network. Well-known information of the layer 2 network can be obtained by the node. The node obtains the well-known information and forms a well-known key based on the well-known information and a preset key derivation algorithm; obtains a local MAC address of a first node and forms a first random number; forms first plaintext data based on the local MAC address and the first random number; and encrypts the first plaintext data based on the well-known key and a symmetric encryption algorithm, to form a first network layer address. Each node forms the well-known key based on the well-known information and the key derivation algorithm, and forms the network layer address based on the well-known key, the local MAC address, and the symmetric encryption algorithm.