Evaluation and Improvement of Pseudo-Random Number Generator for EPC Gen2

RFID enable applications are ubiquitous in our society, especially become more and more important as IoT management rises. Meanwhile, the concern of security and privacy of RFID is also increasing. The pseudorandom number generator is one of the core primitives to implement RFID security. Therefore, it is necessary to design and implement a secure and robust pseudo-random number generator (PRNG) for current RFID tag. In this paper, we study the security of light-weight PRNGs for EPC Gen2 RFID tag which is an EPC Global standard. Based on our analysis, we propose an new scheme which outperform the existing PRNGs for EPC Gen2 RFID tag. We build our PRNG with a combination of NLFSR and DLFSR, and achieve more efficiency and security. We also show that our proposed PRNG has good randomness and passed the NIST randomness test. we also shows that it is resistant to identification attacks and GD attacks.