Simulation of Power System Sampling Data Encryption under Fourier Transform
Power system sampling data are usually collected by sensors,meters and other equipment with voltage,current,frequency and other signal data with obvious time series characteristics.This type of data format does not match the data format processed by many encryption algorithms,therefore,it is impossible to encrypt it directly.In or-der to analyze and process the signals in the power system efficiently while guaranteeing the security of power system sampling data,an encryption method based on Fourier transform is proposed for power system sampling data.The dis-crete Fourier transform algorithm is used to extract the discrete signal frequency value of the power system sampling data,which is converted into encrypted data;the signal frequency value of the power system sampling data is encrypted by attribute base encryption;in order to further ensure the security of the data,on the basis of the attribute base encryption of the data,the second encryption is carried out by the elliptic curve encryption algorithm on the at-tribute base encryption results,so as to realize the encryption of the power system sampling data.Simulation results show that the data encryption using this method effectively transforms the power system sampling data,and the encryp-tion effect of the transformed power system sampling data is better and the risk of leakage is significantly reduced.
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