Buyuk, Oguzhan Oktay; Camurcu, Ali Yilmaz2021-03-142021-03-141.01.2018978-1-5386-4478-22630-6158http://hdl.handle.net/20.500.12645/28544The purpose of this paper was to develop a novel actual time cyber security approach to smart grids. The developed way securely backed the smart meters among smart grids against external attacks in a distribution substation. Security is provided using Message Passing Interface (MPI). Newly configured Floyd-Warshall Algorithm was applied to MPI so as to represent a distribution of key pairs which was generated by Homomorphic Encryption. Simulation case studies were conducted on Raspberry Pi 2 Model B in order to illustrate how the mentioned approach can be built to execute the cyber security essentials via parallel programming techniques and Valgrind tools on a virtual distributed mechanism. Simulation results which use real world attack data demonstrated that the developed way is capable of accomplishing cyber security against outer attacks accurately, quickly and real time based sorting of the key pairs into each smart meter node in the demanded area.enCyber Security; Message Passing; Parallel Programming; Smart Grid Communication; System VerificationProceedings PaperWOS:0005188008000242651-2823