A Blockchain-based Three-factor Mutual Authentication System for IoT using PUFs and Group Signatures

The widespread adoption of Internet Things has brought many benefits to society, such as increased efficiency and convenience in various aspects daily life. However, this also led a rise security threats. Moreover, resource-constrained feature IoT devices makes them vulnerable attacks that compromise the user's privacy sensitive information confidentiality. It is therefore essential address concerns ensure their reliable secure operation. This paper proposes blockchain-based three-factor mutual authentication system for using Elliptic Curve Cryptography, physical unclonable functions group signatures. main purpose achieve among different involved entities while providing anonymous member auditing. AVISPA tool utilized formally prove proposed satisfies requirements.