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This application discloses a data processing method, apparatus, device, storage medium, and program product, relating to the field of data processing technology. The method includes generating a privacy vector and a public key vector based on anonymity query rule data and public parameters, where the public parameters are jointly determined by the data queryer and the data provider; sending an anonymity request to the data provider, the anonymity request carrying the public key vector, the anonymity request being used by the data provider to generate a secret vector and a secret number, the secret vector being a vector in which the data provider encrypts and hides the entire original data using a random mask and an error vector, and the secret number being a secret number associated with the public key vector and the random mask, encrypted and hidden using random error; receiving data feedback information sent by the data provider, the data feedback information including the secret vector and the secret number; and determining the request result corresponding to the anonymity request from the data feedback information based on the privacy vector. This approach can resist quantum computing attacks and prevent data leakage.

This invention relates to the field of quadcopter unmanned aerial vehicle (UAV) control technology, and more particularly to an adjustable predetermined performance control method for a quadcopter UAV with actuator saturation. The method includes: acquiring the physical parameters of the quadcopter UAV; constructing a mathematical model of the quadcopter UAV system based on the physical parameters, the mathematical model considering time-varying mass, actuator saturation, and external disturbances; adjusting the initial performance index range based on the saturation deviation of the actuator input and the limit value; performing state transformation on the error variables of the quadcopter UAV according to the adjusted performance index range; designing an adjustable preset performance controller for the transformed error variables; and applying the adjustable preset performance controller to the mathematical model to ensure the stability and preset performance of the quadcopter UAV system when the actuator is saturated. This invention improves the reliability of the system.