A sliding hash chain, a hash chain-based smart meter electricity degree code storage and evidence method and a verification method

Abstract

A sliding hash chain, a hash chain-based smart meter electricity consumption coding and verification method are disclosed. The sliding hash chain utilizes a sliding window mechanism to determine the earliest record currently stored in the circular buffer as the new logical starting point, solving the chain breakage problem of traditional hash chains in circular overlay scenarios. Applying the sliding hash chain to the smart meter electricity consumption coding and verification method transforms discrete electricity consumption coding events into a continuous sliding hash chain. A global root signature is generated through the smart meter's built-in ESAM module, and the evidence storage metadata block is encapsulated and stored in an interface class for batch verification by the host computer. This achieves the equivalent of verifying all records with a single global root signature verification, significantly reducing the communication overhead and time consumption of host computer verification. Simultaneously, it considers the security, traceability, and management convenience of data evidence storage, adapting to the green electricity traceability and authentication requirements of the power system.

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