A 45.4x∼221.2x latency Improvement of SRP-5 Cryptographic Engine for Smart Grid Network

In a smart grid network, smart meters transmit user’s real-time data to the power management center, while the users receive time-based pricing information from the power management center. As shown in Fig. 1, a secure two-way communication is needed to be implemented for mutual authentication with key management between the power management center and smart meters. Since the prior work [1] adopting SRP-3 as the authentication steps of the smart grid network will be limited in RSA execution for resource constraint devices, a new SRP-5 [2] cryptographic engine featured in supporting Elliptic Curve Cryptography (ECC), and hardware/software co-design is presented in this paper.