A data processing method, a ciphertext computing platform, and a plain-ciphertext hybrid computing system

Abstract

Embodiments of the present invention provide a data processing method, a ciphertext computing platform, and a plain-ciphertext hybrid computing system, which are used to aggregate attribute arrays corresponding to the sample sets according to the binning arrays corresponding to the sample sets. Holding the binning array, the second data party holds the attribute array, the method can be applied to a ciphertext computing platform, and the method includes: receiving a sorting vector uploaded by the first data party in the form of ciphertext, and The position vector uploaded in plaintext; the sorting vector and the position vector are obtained by the first data party sorting the binning array based on the binning corresponding to each element in the binning array; the attribute uploaded by the second data party in ciphertext form Array; based on the sorting vector and the position vector, perform a safe calculation on the attribute array to obtain an aggregated result array. The embodiments of the present invention can reduce the computational overhead of ciphertext computation and improve the efficiency of multi-party aggregation computation on the basis of ensuring data privacy and security.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a data processing method, a ciphertext computing platform and a plain-ciphertext hybrid computing system. Background technique [0002] Data binning is a commonly used data preprocessing method. "Binning" is actually a sub-interval divided according to the attribute value of a certain attribute corresponding to the data, such as a sub-interval divided by age, a sub-interval divided by height, etc. If the attribute value of a data is within a certain subinterval, the data is divided into the bins represented by the subinterval. [0003] For example, for a sample set, after binning according to a certain attribute value of the sample set, the binning array corresponding to the sample set can be obtained, such as bins=[0,1,1,2,0,2], Each element in the bins array represents the bin to which the corresponding sample belongs. In this example, the first element in bins is 0, indica...

AI Technical Summary

Problems solved by technology

If aggregation is based on plaintext data, it will lead to data leakage on the data side. If aggregation is based on ciphertext data on the ciphertext computing platform, it is necessary to perform ciphertext comparison operations on binning, which will result in high computational complexity and low computational efficiency.

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