In last few decades, smart-grid architecture has evolved as a new power service provider that can accomplish regulations of power generation with significant capabilities to monitor power consumption behaviour of the consumers and help in stabilization of the power system. With the huge progress of the delay sensitive smart grid network, it has to encounter various challenges. One of them is cyber-threats to the transmitted messages, control information of the smart-grid, and privacy-preservation of the consumers over smart-grid environment that leave annihilate consequences in real word. One of the key solutions of these cyber-threats is mutual authentication and setting up safe communication between the consumer and the utility-provider. In this paper, we have addressed novel mutual authentication scheme between consumer and substations formed on elliptic curve cryptography with trifling operations for smart-grid environment that is robust against all possible security threats. This scheme also provides a session key negotiation phase to provide secure communication with significantly less communication and computation overheads. The mathematical security testingand formal security testing using broadly-accepted BAN-logic has established that our scheme is robust against all relevant security threats. Further, the simulation result of the proposed schemethrough well-known AVISPA confirms that our scheme is well secure.Finally, to validate the practical ability, the proposed scheme is evaluated using well-accepted network simulator tool NS-2, that shows the proposed scheme is efficient to be implemented in realistic scenario.

在过去的几十年中，智能电网体系结构已经发展成为一种新的电力服务提供商，它可以完成发电规则，并具有监视用户的电力消耗行为并帮助稳定电力系统的重要功能。随着时延敏感型智能电网的巨大进步，它不得不面对各种挑战。其中之一是对已传输消息的网络威胁，智能电网的控制信息以及在智能电网环境中保护消费者的隐私，这些都会在真实的世界中造成毁灭性后果。这些网络威胁的关键解决方案之一是相互身份验证以及在用户和公用事业提供商之间建立安全的通信。在本文中，我们已经解决了在用户和变电站之间形成的新颖的相互认证方案，该方案基于椭圆曲线密码学，通过对智能电网环境进行微不足道的操作来应对所有可能的安全威胁。该方案还提供了会话密钥协商阶段，以提供安全的通信，而通信和计算开销却大大减少。使用广泛接受的BAN-logic进行数学安全性测试和正式的安全性测试已确定，我们的方案可抵抗所有相关的安全威胁。进一步，该方案通过著名的AVISPA的仿真结果证实了该方案的安全性。最后，为验证其实用能力，使用公认的网络模拟器工具NS-2对方案进行了评估，