A data sharing method and device

Abstract

The invention provides a data sharing method. The method comprises following steps: a first sharing module randomly generates a first random private key and a first random public key, and sends the first random public key to a second sharing module such that the second sharing module adopts a pre-set key negotiation algorithm to calculate the first random public key and a second private key as well as identity information of the first sharing module and obtains a second median; the first sharing module receives the second median sent by the second sharing module and calculates a first median and compares the first median with the second median; the first sharing module calculates the first random public key and the second public key as well as the first median if the first median is the same as the second median in order to obtain a sharing key.The data sharing method and device have following beneficial effects: on the condition that data security of a big data platform is ensured, a safe and replaceable sharing key at any time can be provided.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a data sharing method and device. Background technique [0002] With the continuous increase of data volume, structured data, semi-structured data and unstructured data are showing an exponential growth trend, and the existing storage methods can no longer meet the needs of users. Based on big data clusters, through the deployment of encryption modules and key centers, distributed storage and processing of massive data can be realized to ensure data security and prevent users' personal information from being mined through correlation analysis of massive data. [0003] Traditional storage and computing make the query and analysis of distributed stored big data slower and more difficult. Although the traditional encryption method based on public key algorithm can realize data encryption, decryption and digital signature, it consumes The time cost is high, the computin...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a data sharing method and device for the above-mentioned defects in the prior art to solve the problem of how the data in the big data platform existing in the prior art can be changed safely and at any time Shared key, the problem of realizing data sharing

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