Abstract

Authentication is one of the most fundamental problems in computer security. Implementation of any authentication and authorization protocol requires the solution of several sub-problems, such as secret sharing, key generation, key storage, and secret verification. With the widespread employment of the Internet of Things (IoT), authentication becomes a central concern in the security of resource constraint internet-connected systems. Interconnected elements of IoT devices typically contain sensors, actuators, relays, and processing and control equipment that are designed with a limited budget on power, cost, and area. As a result, incorporating security protocols in these IoT components can be rather challenging. To address this issue, in this chapter, we discuss hardware-oriented security applications for the authentication of users, devices, and data. These applications illustrate the use of physical properties of computing hardware such as main memory, computing units, and clocks for authentication applications in low power on the IoT devices and systems.

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