Research On Light-weight Secure Access Technology Of IOT Devices

The Internet of Things is an information carrier based on the Internet,traditional telecommunication networks,etc.,enabling all ordinary objects that can perform independent functions to realize interconnection.Compared with Internet devices,IoT devices have the characteristics of small size,low power consumption and limited resources.The security of the Internet of Things is different from that of the traditional Internet.Due to its limited resources,IoT devices cannot deploy more complex security policies.In the IoT security,it is challenging to study secure access solutions that take into account security and availability.For the research on the security access problem of IoT devices,this master thesis takes wireless sensor networks as the research object,and starts with the characteristics,applications and security threats of wireless sensor networks,and summarizes the research status of wireless sensor network authentication technologies at home and abroad.The analysis results show that the more complex security access technology is difficult to practically apply in wireless sensor networks.In view of the above problems,Based on the previous work,combined with the identity-based public key mechanism and certificate-based secure access mechanism,the key generation method of elliptic curve discrete logarithm cipher algorithm is improved,and a more suitable wireless sensor network is designed and constructed.The light-weight security access method combines the light-weight architecture to construct the authentication architecture,replaces the certificate in the traditional authentication mechanism with the slavery public key,and implements light-weight security access with a security mechanism without certificate management.The design is completed from the structural role of the solution,initialization and two-way authentication protocol,and the formalization method is used to complete the analysis of the security of the two-way authentication protocol.Through the simulation experiment of communication overhead and network connectivity,and constructing the attack mode for theoretical analysis,the experimental and analytical results show that the light-weight security access technology designed in this master thetis guarantees the security of wireless sensor networks.To some extent,a light-weight improvement has been achieved.