Abstract
The IoT era necessitated the need for hardware-based security devices due to their strong resistance to hacking compared to software-based systems, which are limited by CPU usage and performance. Hardware-based systems are more unpredictable due to their unique and non-discernible external properties. This research focused on developing a security device based on lead-free metal oxide CaTiO3 perovskite material with irregular electrical characteristics, known as physical unclonable functions. These irregularities were created by increasing the number of grain boundaries on the device surface through high-temperature annealing, resulting in greater adsorbed oxygen. The outcome was a highly random and unique security key using irregular electrical characteristics with 49.53% uniformity and a 46.55% inter-Hamming distance.
Original language | English |
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Article number | 172329 |
Journal | Journal of Alloys and Compounds |
Volume | 969 |
DOIs | |
State | Published - 25 Dec 2023 |
Keywords
- Grain boundary
- Hardware-based security system
- Metal oxide
- Perovskite
- Physical Unclonable Function