An Efficient Cryptographic Accelerators for IoT System Based on Elliptic Curve Digital Signature

Given the importance of security requirements in today’s Internet of Things (IoT) landscape, this study focuses on enhancing the security of IoT systems through encryption algorithms implemented on the SoC-FPGA platform. Specifically, this paper presents the development of a hardware system that generates public keys and performs digital signature generation and verification using the Elliptic Curve Digital Signature Algorithm (ECDSA) based on the SECP256K1 curve. The ECDSA encryption hardware functions as a co-processor and demonstrates a maximum operating frequency of 30 MHz. In terms of performance, the ECDSA IP achieves efficient processing speeds, taking approximately 17 ms to generate a public key and produce a digital signature and nearly 30 ms to verify the digital signature. These results showcase a well-balanced design that enables a trade-off between speed, area, and power dissipation in the proposed system.