Nano Meets Security: Exploring Nanoelectronic Devices for Security Applications Among the components that can fortify computer security there is a relatively new entrant known as the memristor (contraction of memory resistor).

Information security has emerged as an important system and application metric. Classical security solutions use algorithmic mechanisms that address a small subset of emerg- ing security requirements, often at high-energy and perfor- mance overhead. Further, emerging side-channel and physical attacks can compromise classical security solutions. Hardware security solutions overcome many of these limitations with less energy and performance overhead. Nanoelectronics-based hardware security preserves these advantages while enabling conceptually new security primitives and applications. This tu- torial paper shows how one can develop hardware security primitives by exploiting the unique characteristics such as complex device and system models, bidirectional operation, and nonvolatility of emerging nanoelectronic devices. This pa- per then explains the security capabilities of several emerging nanoelectronic devices: memristors, resistive random-access memory, contact-resistive random-access memory, phase change memories, spin torque-transfer random-access memory, orthogonal spin transfer random access memory, graphene, carbon nanotubes, silicon nanowire field-effect tran- sistors, and nanoelectronic mechanical switches. Further, the paper describes hardware security primitives for authentica-