Power load data encryption method and system based on adaptive chaotic mapping

By using an adaptive chaotic mapping method, an appropriate chaotic system is selected based on the column-level characteristics of power load data to generate a key stream. This solves the problem of insufficient adaptability of existing encryption algorithms in power load data processing and achieves efficient and flexible data encryption and decryption.

CN121967036APending Publication Date: 2026-05-01BENGBU POWER SUPPLY COMPANY STATE GRID ANHUI ELECTRIC POWER +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BENGBU POWER SUPPLY COMPANY STATE GRID ANHUI ELECTRIC POWER
Filing Date
2026-02-04
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing encryption algorithms cannot effectively utilize the column-level characteristics of power load data, resulting in poor support for mixed data types, insufficient adaptability, and difficulty in achieving a balance between performance and security in engineering practice.

Method used

An adaptive chaotic mapping method is adopted. By quantifying the complexity of each column of data, a one-dimensional sine mapping or a two-dimensional coupled sine-tent mapping is selected to generate a chaotic key stream. Combined with the column name-driven parameter derivation mechanism, column-level encryption is achieved.

Benefits of technology

It improves the targeting and flexibility of encryption, increases the difficulty of protecting against attackers, and maintains the consistency and reversibility of data structure, making it suitable for secure storage and sharing in power companies.

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Abstract

The invention relates to a power load data encryption method and system based on adaptive chaotic mapping in the technical field of power system information security. The power load data encryption method comprises the following steps: converting a to-be-encrypted column into a floating-point number form, mapping each column into a byte stream through byte re-explanation, measuring column complexity by using statistical entropy, adaptively selecting chaotic mapping of different dimensions to generate a key stream, and encrypting the key stream to obtain the power load data. And performing bitwise XOR operation on the plaintext bytes and the key bytes on the byte level to obtain a ciphertext. According to the method, the complexity of each column of data is quantitatively evaluated, one-dimensional sine mapping or two-dimensional coupling sine-tent mapping is automatically selected to generate a chaotic key stream, and a parameter derivation mechanism jointly driven by a master key and a column name is adopted, so that unified encryption of a time column and a value column at a column level is realized, and the encryption efficiency is improved. According to the invention, too complex encryption calculation on the simple column is avoided, and the safety protection on the complex column is improved.
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