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Memristive crypto primitive for building highly secure physical unclonable functions.

Yansong Gao1, Damith C Ranasinghe2, Said F Al-Sarawi3

  • 11] School of Electrical and Electronic Engineering, The University of Adelaide, SA 5005, Australia [2] Auto-ID Labs, School of Comupter Science, The University of Adelaide, SA 5005, Australia.

Scientific Reports
|August 5, 2015
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Summary

This study introduces a novel memristive device-based strong Physical Unclonable Function (PUF) using nanocrossbar architectures. This reconfigurable PUF (rPUF) offers enhanced security and key management for electronic devices.

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Area of Science:

  • Nanoelectronics
  • Cybersecurity
  • Materials Science

Background:

  • Physical unclonable functions (PUFs) leverage unique physical properties for secure key generation, outperforming traditional cryptography.
  • Existing PUF designs primarily utilize Complementary Metal Oxide Semiconductor (CMOS) technology, facing scaling limitations.
  • Memristor-based nanoelectronic devices exhibit significant process variations, offering potential for high-density information storage and security applications.

Purpose of the Study:

  • To develop a novel on-chip memristive device-based strong PUF (mrSPUF) utilizing nanocrossbar architectures.
  • To exploit the high information density and resistance variations of memristors for enhanced security.
  • To create a reconfigurable PUF (rPUF) without additional hardware for flexible key management.

Main Methods:

  • Designed a memristive device-based strong PUF (mrSPUF) architecture.
  • Utilized nanocrossbar arrays to exploit memristor resistance variations and information density.
  • Evaluated the PUF's uniqueness, reliability, and number of challenge-response pairs (CRPs).

Main Results:

  • The proposed mrSPUF architecture demonstrates high uniqueness and reliability.
  • Achieved a large number of challenge-response pairs (CRPs), characteristic of strong PUFs.
  • The memristive PUF functions as a reconfigurable PUF (rPUF) without extra hardware.

Conclusions:

  • Memristor-based nanocrossbar architectures are suitable for developing high-security Physical Unclonable Functions.
  • The developed mrSPUF offers superior security features and reconfigurability for advanced applications.
  • This approach provides a promising solution for secure key generation and management in future electronic systems.