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Researchers developed a novel reconfigurable strong physical unclonable function (PUF) using resistive random-access memory (RRAM) for enhanced Radio Frequency Identification (RFID) security. This RRAM PUF offers robust protection against various attacks, improving RFID tag security.

Keywords:
physical unclonable function (PUF)radio frequency identification technology (RFID)reconfigurabilityresistive random access memory (RRAM)security authentication protocol

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Area of Science:

  • Electrical Engineering
  • Computer Science
  • Cybersecurity

Background:

  • Existing lightweight RFID encryption schemes offer limited information protection.
  • Physical unclonable functions (PUFs) provide hardware-based security solutions.
  • Resistive random-access memory (RRAM) offers unique properties for PUF implementation.

Purpose of the Study:

  • To propose a new high-efficiency, reconfigurable strong PUF circuit structure using RRAM.
  • To develop and implement a lightweight RFID authentication protocol based on the RRAM PUF.
  • To enhance the security and resistance against various attacks in RFID systems.

Main Methods:

  • Designed and implemented a reconfigurable strong PUF circuit utilizing RRAM.
  • Developed a lightweight RFID authentication protocol replacing One-way Hash Function with a response chain mutual encryption algorithm.
  • Evaluated PUF performance using inter-chip and intra-chip Hamming distance (HD) and bit error rate (BER).

Main Results:

  • The proposed RRAM PUF demonstrated near-ideal inter-chip HD (µ/σ = 0.5001/0.0340) and near-ideal intra-chip HD (close to 0).
  • Achieved a low bit error rate (BER) of 3.8×10-6 over one million challenges.
  • The RRAM PUF-based RFID authentication protocol effectively resisted physical, replay, tracking, and asynchronous attacks with good stability.

Conclusions:

  • The RRAM PUF offers excellent randomness and stability for secure RFID applications.
  • The proposed lightweight RFID authentication protocol provides robust security against multiple threats.
  • The reconfigurable nature of the RRAM PUF enhances security for RFID tags.