Energy data security dynamic authentication method and system based on smart contract

The invention relates to the technical field of data security authentication, in particular to an energy data security dynamic authentication method and system based on a smart contract, and the method comprises the steps: collecting an energy data sequence; acquiring a neighbor energy data sequence and a neighbor energy change sequence of each data point in the energy data sequence; constructing a neighbor discretization index and a plaintext information variation fluctuation index of each data point in the energy data sequence, and calculating a transverse neighbor byte difference index of each column of bytes and a longitudinal neighbor byte difference index of each row of bytes of the plaintext section matrix; and obtaining the plaintext node change matrix, further obtaining each plaintext information block, extracting an information abstract of the energy information based on the plaintext information block by using an MD5 information abstract algorithm, and taking the information abstract as an authenti