Arbiter Physical Unclonable Functions with Asymmetric Pairs of Paths

The methods of constructing physical unclonable functions (PUF), which are the basis cryptography, analyzed. broad applicability Arbiter PUF, based on analysis delays signal transmitted along two paths, is noted. It shown that randomness explained by technological variations in manufacturing process PUF and their dependence use homogeneous repeating elements ensure symmetry paths. As an alternative to existing solutions, article proposes a new approach for asymmetric sources as logical element investigated. Their diversity distinctive characteristics depending number inputs active supplied values at other inputs. A technique balancing set pairs paths proposed, lays regulating duration impulse test four types path asymmetry. New structures with proposed. Experimental studies confirm possibility using various form delays.