Strong Physical Uncloneable Functions using Arrays of Resonant Tunnelling Diodes
Benjamin Astbury · Lancaster EPrints (Lancaster University) · 2017
A modern world of interconnected devices requires truly unique authentication. Secure authentication has been shown through the use of physically unique objects. One such object is the resonant tunnelling diode which is unique in its creation and outputs a signal which is difficult to reproduce due to its uncontrollable creation. The electrical device, used previously as a single response system, can be used in conjunction to create arrays of devices composing a system. The array can be composed in numerous ways which allow for varying response set sizes and susceptibility to attack. By keeping a consistent number of devices per response allows information leakage of the system to be kept to a minimum while retaining a large set of responses. The system, depending on its controlling method and initial design, can respond an exponentially increasing number of times. This property increases system uses while leaving it no less susceptible to attacks from nefarious parties. The system shows inherent uniqueness and reliability while allowing the system to be expanded for larger sets of responses and increased security.