| Wireless sensor network is a new research direction of information awareness and information collection and transmission. In recent years, wireless sensor network has become a new research direction in communication engineering, computer science and automation, but wireless sensor network has the characteristics of flexible network topology,computing speed and storage space, which can not guarantee the integrity, authenticity and confidentiality. The security mechanism of the network is studied and analyzed, and the implementation scheme of the ZigBee application layer message security and effective transmission can be searched.The main points of the paper are as follows:(1)for wireless sensor networks, the security of ZigBee protocol is proposed, and a modified Diffie-Hellman group key agreement scheme is proposed to guarantee the security of network key transmission and the flexibility of the security of message transmission and topology changes.(2)for the existing ZigBee network,the ZigBee security scheme is proposed by using RSA algorithm, which is based on the algorithm, which is used to obtain the key, the network key and the public key, which can be used to obtain the target node’s public key. The key is to receive the message. At this time,the target node only needs to keep a decryption key, reduce the communication delay of the search key, and reduce the occupancy of the wireless resource, and improve the network utilization.Finally, this paper builds the ZigBee network simulation platform using CC2530 communication suite, to verify the application layer message transmission scheme is put forward. Through monitoring from the serial port and packet sniffer intercepted data analysis,proved the feasibility of the proposed information security transmission scheme. |
