Secure database storage system based on secret sharing

Abstract

The invention provides a secure database storage system based on secret sharing, and a client comprises the following steps: encrypting a plaintext according to an initial segmentation scheme code to obtain encrypted data; sending the current segmentation scheme code as a signature of a target operation behavior instruction to a server side; the server side comprises the following steps: carrying out N times of segmentation on the encrypted data in parallel by adopting a Shamir threshold secret sharing algorithm to obtain N groups of secret segmentation schemes; respectively storing shares in the N groups of secret segmentation schemes into different databases, endowing each group of secret segmentation schemes with a segmentation scheme code, and initializing a current segmentation scheme identifier; and performing matching verification on the signature and the current segmentation scheme identifier, if the verification is passed, analyzing the target operation behavior instruction, performing corresponding operation on the stored data, and feeding back an execution result to the client. The problem of low security of traditional data storage can be effectively solved.

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