Improvement and Cryptanalysis of a Physically Unclonable Functions Based Authentication Scheme for Smart Grids

Authentication protocols are often used in smart grids to deliver the necessary level of security. A huge number clients such a system, however, provides attacker with ability clone them, for example. Device fingerprints, or Physically Unclonable Functions (PUF), have been investigated as an authentication feature thwart attacks. In order accomplish security grid neighborhood area network communications and prevent unwanted physical access meters, former study designed lightweight system this way. The suggested protocol uses PUFs reduce As consequence, server/meter impersonation attack is one many assaults that thought be secure against. On other hand, it generally acknowledged no solution should trusted unless its has verified by independent researchers. result, paper assesses against typical adversary who influences over messages carried public channel. This demonstrates simply capable impersonating server meter vice versa. addition, attacks desynchronize making only interacting role legal rather than latter. Each proposed extremely effective, their success probability almost 1. Finally, modification successfully fixes protocol’s weaknesses. proof improved done through Scyther tool. computational cost comparison shows overhead compared scheme 4.85%, while withstands various attacks, including traceability, desynchronization, impersonation, man-in-the-middle, secret disclosure