Fatemeh Najafi - Department of Electrical Engineering Iran University of Science and Technology
Masoud Kaveh - Department of Electrical Engineering Iran University of Science and Technology
Mohammad Reza Mosavi - Department of Electrical Engineering Iran University of Science and Technology

Physical Unclonable Functions (PUFs) are low-cost and robust hardware primitives that address many privacy and security challenges. Stable and unique features based on variations in manufacturing processes are the basis of different PUF technologies. So far, many PUF-based constructions have been proposed, which have provided device authentication and key generation services. However, the existing mechanisms have some disadvantages that make them vulnerable to various attacks. In this paper, the new structures of memory-based PUFs and their characteristics are studied. Then, a new design is proposed, which employs both SRAM and DRAM PUFs and uses their advantages to provide a secure and robust authentication method. Furthermore, we propose a novel authentication protocol based on the proposed PUF structure. The proposed scheme not only provides proper features of PUF-based services and significantly increases the security level but also enhances the performance of the system in terms of computational cost and communication overhead.

DRAM PUF, SRAM PUF, True random number generation, Efficient authentication