The invention discloses an
Internet of Things intelligent meter safety
system and an implementation method. The problems that existing meter hardware and
software have security holes, communication
encryption and decryption security is not high, and the efficiency ratio is low are solved. The
system comprises a meter end and a cloud end which are in communication connection, the meter end comprises an MCU controller, the MCU controller comprises a safe world part and a non-safe world part, a trusted execution environment is deployed in the safe world part, and a non-safe environment is deployed in the non-safe world part. A
security kernel module, a startup loading module, an OTA upgrading module, a
security service module, a security driving module and a security API interface module arearranged in the trusted execution environment, and a user application CA module and a non-
security kernel module are arranged in the non-security environment. Information between the meter end and thecloud end is communicated in an asymmetric and symmetric
encryption and decryption combined mode. Safety protection is carried out on meter hardware,
software and communication, so that the hardwareis prevented from being controlled, the
software is prevented from being cracked, and information is prevented from being stolen.