A Security Enhanced Authentication Protocol

Internet of Things (IoT) have gained popularity in recent times. With an increase in the number of IoT devices, security and privacy vulnerabilities are also increasing. For sensitive domains like healthcare and industrial sectors, such vulnerabilities can cause havoc. Thus, authentication is an important aspect for establishing a secure communication between various participants. In this paper, two recent authentication and key exchange protocols are studied. It is demonstrated that these protocols are susceptible to replay attacks, modification attacks, and technical correctness issues. Possible improvements to address these vulnerabilities are also presented. The enhancements are designed to preserve the performance of the original protocols.