DATA PROCESSING

Embodiments of this specification provide data processing methods and apparatuses, applied to a system including a data provider and N secure multi-party computation MPC computation parties. N is an integer greater than 3. In the method in the embodiments, each MPC computation party obtains a data message sent by the data provider, and obtains a first data component by using the data message; performs arithmetic sharing processing by using the first data component, to obtain a second data component, so as to perform MPC processing. N data messages received by the N MPC computation parties include: a data message sent after the data provider splits private data into M data components, and M data messages each are used to carry one data component, where M is greater than 1 and is less than or equal to N, and M is a positive integer.