A secure Data Communication protocol between IoT smart devices or sensors and a Network gateway under Internet of Thing environment

摘要

In an IoT environment, as intelligence sensor collecting sensor data.When the place of The sends data to a gateway, solve penetralia insurance, the present invention relates to a structure and operation method of the CPU being connected in a gateway (or application processor) and a safety chip (eSE), in order to safely transmit data to a gateway in a light intelligence sensor and the safely ciphertext data in gateway present. In this structure, when sensor needs to transmit data by encrypting it, AP provides same time information to eSE and intelligence sensor, in order to independently generate the session key for encryption and the decoding together with sensor and eSE, by providing the unique ID (or pervious random number) of eSE and providing it for intelligence sensor, intelligence sensor and eSE have identical " time information+ID (or pervious random number) ". Based on this, eSE and intelligence sensor generate same session key, encrypt intelligence sensor, are calculated using symmetric key, transmit the information to gateway, and the AP of gateway transmits this data to eSE, return to the plain text of decryption to AP.The The present invention is safely wirelessly a kind of method in an IoT environment, and the pushed information for being delivered by an intelligence sensor simultaneously safely solves confidential information in a gateway.