Provable Secure Authentication Protocol in Fog-Enabled Smart Home Environment

People can access and obtain services from smart home devices conveniently through fog-enabled environments. The security privacy-preserving authentication protocol play an important role. However, many proposed protocols have one or more flaws. In particular, almost all the existing for cannot resist gateway compromised attacks. adversary not only know user’s identity but also launch impersonation Designing a provable secure that avoids known attacks on homes is challenging. Recently Guo et al. scheme based symmetric polynomials in environment. we found their suffers attack, desynchronization mobile device loss/stolen has no untraceability perfect forward secrecy. Therefore, adopt Physical Unclonable Function (PUF) to Elliptic Curve Diffie–Hellman (ECDH) key exchange achieve secrecy, propose protocol, which provably under random oracle model. According comparisons with some related protocols, better transmission efficiency same computation cost level.