A Programmable 6T SRAM-Based PUF with Dynamic Stability Data Masking
Lu Lu, Tony Tae-Hyoung Kim · 2021 IEEE Asian Solid-State Circuits Conference (A-SSCC) · 2021
SRAM-based physically unclonable function (SPUF) generates a random code by utilizing deep submicron variations in the fabricating process. It offers a mature and practical security module which widely adopted in commercial products. Advantages of SPUF (as shown in Fig. 1) are that no data are kept when the power is off, and it can generate the secret key by reusing the SRAM structure in the system with a minimum area overhead and least effort on integration. Therefore, SPUF should support both the SRAM mode and the PUF mode without significant performance degradation and area overhead.