An RFID Lightweight Authentication Technology Based on PUF-RFID Structure Model

With the rapid development of radio frequency identification (RFID) technology, RFID devices are beginning to exist widely in our daily lives, and people are paying more and more attention to RFID security. Traditional RFIDbased encryption algorithms rely on expensive Hash function. Therefore, this paper proposes a lightweight RFID authentication protocol based on Physically Unclonable Functions (PUF), which uses the machine learning algorithm and string-matching algorithm, and presents a new mechanism of PUF challenge generation, which does not require expensive error correction code and fuzzy extractor. The implementation cost is lower. Through our security analysis, our identity authentication protocol can provide reliable security for low-cost RFID systems.