Decentralised Authentication Protocol for Devices & Users to Access Private Network Services Using Blockchain

With recent advancements in the Internet of things, challenges to secure devices and data related to devices have increased. Adversaries using different threats manage to clone/hack/tamper devices by hacking credentials stored in centralised databases. In this work, a decentralised approach using blockchain is proposed to check the authenticity of the device/user trying to access the services of the service provider network. The proposed method uses public and private blockchain networks and Physical Unclonable Function (PUF) to authenticate the device/user and to store their credentials. The decentralised application runs on Hyperledger Fabric, an open-source platform for building blockchain networks. The proposed protocol is tested and implemented in the physical testbed containing Raspberry Pi and Arduino Mega's.