Providing a Distributed Cryptographic Method Based on Pairing in Order to Increase the Security of the Internet of Things
Elaheh Khamseh, Mahnaz Ahadzadeh Namin, Akram Reza · Research Square · 2022
Abstract The Internet of Things (IoT) is a necessary infrastructure for connecting thousands of electronic components to manage smart cities. One of the main challenges of the IoT is the computational constraints at end nodes due to power and storage restrictions. Therefore, the security, i.e. encryption and decryption, of data in transmission which demands high computational power is still a big challenge which has been a subject of debate in this area. To address the aforementioned challenge, computational outsourcing has been utilized by decentralized encryption schemes. The blockchain is a decentralized and autonomous implementation used as a distributed system for encryption. A promising approach to achieving fine-grained access control over IoT data outsourcing is a Ciphertext-policy attribute-based encryption (CP-ABE). To use attribute-based encryption, we must also define an access structure. In this paper, for secure data communication in the IoT network, we use attribute-based encryption with LSSS access structure on blockchain infrastructure. We propose Attribute-Based Encryption with Blockchain framework on the Internet of Things (ABEBIoT) where our approach focuses on the secure outsourcing of bilinear pairings and to increase the security and efficiency compare to Type-1 pairing, Type-3 pairing is used to generate cryptographic keys. Based on the evaluation criteria, this scheme is safe under the assumption of s-D-BDHE and costs further are acceptable.