Smart grid-oriented untraceable blind signature method and system

Abstract

The invention discloses an untraceable blind signature method and system for a smart power grid. The method comprises the following steps: initializing system parameters of the smart power grid; according to the system parameters, generating a private key and a public key of a signer for calculating a blind signature for the smart grid related data of the user; based on the private key and the public key of the signer, enabling the user and the signer to carry out information interaction, after a blind signature is obtained, finally obtaining a message signature pair through blind removing operation, wherein the message refers to related data of the smart power grid; verifying the message signature pair: if the verification is passed, considering that the user smart power grid related data is authentic, i.e., actually determining that the data is authorized by a signer, otherwise, considering that the data is unauthorized. According to the method, the blind factor is added in the blind signature calculation process, so the malicious signer cannot associate the blind signature from the public signature list, the method has untraceability, the privacy protection capability of the smart power grid application can be enhanced, and the wide application of the blind signature technology in the smart power grid is promoted.

Description

technical field [0001] The invention belongs to the technical field of information security, and relates to a smart grid-oriented non-traceable blind signature method and system. Background technique [0002] A smart grid is a modern power delivery system that relies heavily on two-way communication, information and software for optimal control and advanced grid functionality. Although the smart grid can provide fine-grained consumption monitoring and promote many residential power generation sites to participate in distributed energy transactions, there are privacy leakage problems such as identity information and grid data, which restrict the development of the smart grid. [0003] As a special digital signature, blind signature can ensure that the signer generates the correct digital signature without knowing the message, thus supporting the data privacy protection of smart grid and other similar application scenarios. Although the existing blind signature schemes are co...

AI Technical Summary

Problems solved by technology

Although the existing blind signature schemes are complete, unforgeable, and blind, and can provide certain privacy protection capabilities, most blind signature schemes are difficult to support untraceability, that is, malicious signers can use public message signatures to successfully The original message corresponding to the blind signature is traced, causing the blind signature to still face the risk of privacy leakage during the application process

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