A Secure Trust Method for Multi-Agent System in Smart Grids Using Blockchain

This paper proposes a blockchain based trust management method for agents in multi-agent system (MAS). In this work, three objectives are achieved: trust, cooperation and privacy. The of depends on the credibility evaluators, which is verified using proposed methods distortion, consistency reliability. To enhance between agents, tit-3-for-tat (T3FT) repeated game strategy developed. more forgiving than existing tit-for-tat (TFT) strategy. It encourages cheating to re-establish their by cooperating consecutive rounds play. Also, proof-of-cooperation consensus protocol improve agents' while creating validating blocks. privacy preserved work publicly verifiable secret sharing mechanism. implemented MATLAB R2018a MAS simulated Java Agent DEvelopment framework (JADE). Simulation results validate effectiveness work. From simulation results, outperforms an fuzzy logic terms detecting behavior system. Besides, T3FT effective as compared tit-for-2-tat TFT strategies literature. Moreover, security analysis performed. shows that safe from bad-mouthing on-off related attacks.