Lightweight data encryption method for intelligent lamp post system

The invention provides a lightweight data encryption method for an intelligent lamp post system, the encryption method is based on the intelligent lamp post system, and the intelligent lamp post system comprises an intelligent lamp post terminal accessed to a cloud platform through an edge authentication platform. The smart lamp post system performs hash operation by using a timestamp to generate a unique SM4 key to ensure forward confidentiality and backward confidentiality of an encryption algorithm, data collected by the smart lamp post terminal is encrypted by using the SM4 algorithm based on the key, and the generated encrypted data comprises original data and a hash value thereof to verify data integrity; in the intelligent lamp pole system, encrypted data are transmitted through a lightweight transmission protocol and are decrypted and verified at a receiving end; according to the invention, the data security and communication efficiency of the intelligent lamp post system can be improved. 本发明提出一种面向智慧灯