Blockchain-Based Traceable Anonymous Authentication For Smart Grids
Low latency and real-time synchronization of information are currently two challenges faced by smart grids.Most existing smart grid identity authentication schemes suffer from high computational and communication costs,making them unsuitable for smart devices with limit-ed computing resources in smart grids.A traceable anonymous authentication scheme for smart grids based on blockchain is proposed.This scheme can achieve edge server authentication of legitimate smart meters under the condition of anonymity of smart meters.At the same time,the authentication process does not require the participation of the power service registration authorization center.In order to solve the efficien-cy problem,this scheme constructs a chameleon hash algorithm that can significantly improve the efficiency of subsequent authentication after the fist authentication.Security analysis shows that this scheme has indistinguishability,anonymity,conditional traceability,and can resist simulation attacks and replay attacks.Performance analysis shows that this scheme can meet the requirements of low latency and efficiency in smart grid environments.
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