Expressway networking monitoring data encryption transmission method and system

The invention provides a method and a system for encrypted transmission of highway networking monitoring data. The system comprises a coding specification module for coding and standardizing a monitoring data structure and networking monitoring facility equipment, and a communication handshake module for performing authentication management on a lower-level monitoring unit accessed to a networking monitoring platform, the data encryption and decryption module is used for encrypting and decrypting all communication data packets of the networking monitoring platform and the subordinate monitoring unit in the link session; the Kafka cluster is established to receive monitoring data of different session themes in the subordinate monitoring unit; and the message center module manages and receives a control instruction issued by the service system. According to the invention, a data transmission specification of highway networking monitoring facilities and equipment is established, and on the basis, encryption proc