Comprehensive evaluation method for Internet of Things key negotiation scheme

The invention relates to a comprehensive evaluation method for an Internet of Things key negotiation scheme. The method is technically characterized by comprising the following steps: calculating Internet of Things key negotiation efficiency; calculating Internet of Things key interaction time delay; calculating the calculation time delay in the Internet of Things key negotiation process; calculating a comprehensive negotiation efficiency index of the current Internet of Things key negotiation scheme by integrating the Internet of Things key negotiation efficiency, the Internet of Things key interaction time delay and the calculation time delay in the Internet of Things key negotiation process; selecting the scheme with the highest efficiency to perform key negotiation. Aiming at the condition that only the negotiation success rate and the information leakage rate are considered in the current key negotiation efficiency evaluation, the method is advantageous in that the time delay caused by multiple interacti