MRAM Devices to Design Ternary Addressable Physically Unclonable Functions

Manuel Aguilar Rios, Mahafujul Alam, Bertrand Cambou

Research output: Contribution to journalArticlepeer-review


We introduce a novel approach to constructing ternary addressable physically unclonable functions (TAPUFs) using magnetoresistive random-access memory (MRAM) devices. TAPUFs use three states (1, 0, and X) to track unstable cells. The proposed TAPUF leverages the resistance properties of MRAM cells to produce unique digital fingerprints that can be effectively utilized in cryptographic protocols. We exploit the cell-to-cell variations in resistance values to generate reliable cryptographic keys and true random numbers, which can add protection against certain attacks. To evaluate the performance of the TAPUF, various tests were conducted, including assessments of inter-cell to intra-cell variation, inter-distance, bit error rate (BER), and temperature variation. These experiments were conducted using a low-power client device to replicate practical scenarios. The obtained results demonstrate that the proposed TAPUF exhibits exceptional scalability, energy efficiency, and reliability.

Original languageEnglish (US)
Article number3308
JournalElectronics (Switzerland)
Issue number15
StatePublished - Aug 2023


  • authentication
  • cryptographic schemes
  • low power
  • magnetoresistive random access memory (MRAM)
  • memory array components
  • non-volatile
  • physically unclonable function (PUF)
  • ternary states

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Signal Processing
  • Hardware and Architecture
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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