Safe and reliable communication method based on group authentication in smart home environment

Abstract

The invention discloses a safe and reliable communication method based on group authentication in a smart home environment. An authentication process is divided into three stages, in the equipment initialization and registration stage, newly added gateway equipment initialization work and registration work of a group of smart home equipment are completed, in the authentication and key negotiationstage, mutual identity authentication of the gateway and the same group of smart equipment is completed, and a session key is generated between each piece of smart equipment and the gateway and used for encrypting and decrypting transmission data. According to the method provided by the invention, simultaneous identity authentication of a group of intelligent equipment can be realized, and the overhead of computing resources is reduced by utilizing operations with relatively low overhead, such as hash operation, linear polynomial calculation, number addition calculation and exclusive-OR operation.

Description

technical field [0001] The present invention relates to the technical field of computer software, in particular to a safe and reliable communication method based on group authentication in a smart home environment. Background technique [0002] The Internet of Things connects devices to the Internet to communicate with RFID, infrared sensors, and global positioning systems for intelligent identification and positioning. Among them, the smart home system is an important application environment of the Internet of Things. A smart home is a technological environment that combines various subsystems with information sensing devices to connect to a network to monitor and control home appliances. Smart home combines construction equipment, network communication technology and information equipment to provide individuals with an efficient, comfortable, safe and convenient living environment. Smart home can realize all-round information exchange and optimize personal lifestyle and ...

AI Technical Summary

Problems solved by technology

Each smart device needs to be authenticated one-to-one with the home gateway. When a large number of smart devices request authentication from the home gateway at the same time in a short period of time, authentication delays will occur

[0008]2) The calculation overhead and communication overhead of the scheme are relatively large

Most of the existing schemes use public key encryption operations, dot multiplication or exponential calculation in the addition group, and the calculation cost is relatively large

[0009]3) The confidentiality of communication data is weak

In a smart home system, user data (such as electricity consumption records, behavior information, etc.) is collected by smart devices and sent to the home gateway. Due to the openness of wireless communication channels, these sensitive data are easily leaked

[0010]4) Leakage of identity and privacy of smart devices

If the identity information of the smart device is transmitted in an unencrypted form in an insecure communication channel, malicious attackers in the channel may eavesdrop, intercept or tamper with the identity information, further perform simulated attacks, and obtain the gateway's private information and user's private data, thereby compromising the entire system

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