A new fingerprint authentication coplanar scheme based on quantum-dot cellular automata

Abstract

A quantum-dot cellular automaton (QCA) is among the most ambitious nanotechnological advances to make nanoscale circuits. On the other hand, security is a critical function needed to safeguard sensitive data, and the fingerprint is a distinct feature that can be used to identify an individual. Biometrics can be used to recognize fingerprints; therefore, biometrics has become an essential aspect of user authentication. Also, because of QCA’s high density and inherent significant qualities, optimal cell utilization is an important topic to discuss in QCA when exploring and manufacturing quantum dots. Therefore, a new fingerprint authenticator based on QCA is proposed in this research to protect user's information. The results based on “Bistable Approximation” and “Coherence Vector” engines are identical, indicating that the proposed circuit architecture is accurate and more efficient. The proposed circuit contains 33 cells and occupies 0.03 m2 in total. In addition, as compared to the best-presented QCA fingerprint design, the coplanar design resulted in an 11% reduction in cell number.