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Asymmetric cryptography enabled by TaOx-based complementary memristors with tunable pulse dynamics.
Yunlai Zhu1, Xiaoling Wu1, Junjie Zhang1
1School of Integrated Circuits, Anhui University, Hefei, Anhui, 230601, China. wuzuheng@ahu.edu.cn.
Nanoscale
|February 10, 2026
Summary
This study presents a new hardware encryption method using TaOx-based memristors for secure communication. This approach enhances security and efficiency in resource-limited systems.
Area of Science:
- Materials Science
- Computer Science
- Electrical Engineering
Background:
- Traditional encryption faces challenges in secure, low-power environments.
- Key management and energy efficiency are critical for IoT and embedded systems.
Purpose of the Study:
- To develop a hardware-based asymmetric encryption framework using TaOx-based complementary memristors.
- To address limitations in key management and energy efficiency for secure communication.
Main Methods:
- Utilized tunable conductance modulation in complementary resistive switching (CRS) devices.
- Implemented long-term potentiation (LTP) and long-term depression (LTD) for key generation.
- Employed a 2 × 4 CRS crossbar array for data encryption/decryption and integrated SHA-256 for authentication.
Main Results:
- Achieved reliable and reversible encryption/decryption directly in memory.
- Demonstrated high encryption fidelity and distinct key separation.
- Showcased strong resistance to unauthorized access.
Conclusions:
- TaOx-based complementary memristors offer a promising solution for secure cryptographic applications.
- The framework is suitable for next-generation IoT and embedded systems requiring enhanced security and efficiency.
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