Attribute-based keyword search encryption scheme for IoT edge environment

This study is committed to solving the problem of high computational volume in the Internet of Things environment of most current searchable encryption schemes, and proposes a lightweight attribute-based searchable encryption scheme. Firstly, by dividing the encryption stage into online and offline parts, the ciphertext can be generated only by performing limited calculations in the online stage. Secondly, outsourcing the decryption computing to the edge server significantly reduces the computing and storage burden of IoT terminal devices and improves the overall performance of the system. At the same time, multi-keyword query is introduced to improve the efficiency of ciphertext retrieval while ensuring data security and privacy. Simulation experiments verify the lightness and feasibility of the proposed scheme, which provides an effective solution for achieving efficient and secure searchable encryption in the Internet of Things environment.