A cloud data security sharing method based on a block chain

Abstract

The invention discloses a cloud data security sharing method based on a block chain. The method comprises the steps that 1, a trusted certificate authorization center provides a unique global identityID and a digital certificate according to identity information submitted by a user or an attribute authorization center; the attribute authorization center assigns attribute public and private key pairs for each attribute and distributes attributes for legal users; 2, encrypting and uploading the user data; 3, downloading data by the user; and 4, data decryption: the attribute key set of the usermeets the access strategy of the data, and a decryption key can be obtained through an attribute-based decryption algorithm, so that the data to be accessed can be decrypted. The method has the advantages that the data sharing safety and the data sharing efficiency are improved in an untrusted environment, and the compliance of entity behaviors is supervised.

Description

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AI Technical Summary

Benefits of technology

This invention relates to improving secure storage for sensitive or valuable digital content (such as music). It involves creation of an authenticated file system where each piece has its unique attributes such as accessing it's right based on certain rules like how many people are allowed into this space without being able to see what they belong behind them. Users also pay attention when adding new files onto these systems but cannot be seen unless encrypted correctly. Additionally, there may exist methods called BlockChain Technologies used during collaboration between different companies involved in providing services over networks. These technical improvements help protect against unauthorized copying of copyrighted material stored within servers connected across computer networks.

Problems solved by technology

Cloud storage systems have become increasing popular due to its ability to store more digital assets securely without compromising them or requiring expensive infrastructure like virtual machines (VM). While these advancements make upgrades easier than ever before, there may still exist concerns about how confidentiality protected individuals cannot freely exchange important data over internet connections. Additionally, some companies require strict regulations regarding what types of data should remain secret even during offline operations where servers actively participate. These issues impede efficient use of cloud stores despite being able to hide any type of data within certain boundaries.

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