Safe subscription publishing system and method based on wireless sensor network and cloud computing

The invention discloses a safe subscription publishing system and method based on a wireless sensor network and cloud computing. A PHY_A authentication module is arranged at the end of the wireless sensor network, and a physical layer auxiliary authentication technology is used for guaranteeing the safety of sensing data. A data encryption module is arranged on an infrastructural facility, namely a server of a cloud, and the data encryption module encrypts received important published information by using a homomorphic encryption technology. A decoding module is arranged on a user terminal and is used for decoding the obtained published information. According to the safe subscription publishing system and method, when arriving at the cloud, the published information has already been authenticated based on the physical layer auxiliary authentication technology, therefore, the correctness and the safety of the published information are guaranteed, the transmitting efficiency of the published information is improved, and the real-time performance of information transmission is enhanced; the data encryption module based on the homomorphic encryption technology guarantees that data content of the cloud can not be watched stealthily or tampered, the safety of cloud information is improved, searchability is achieved, and users can directly retrieve encryption content on the cloud.