Block chain-based big data privacy sharing security protection system and method

Abstract

The invention discloses a big data privacy sharing security protection system and method based on a block chain, and belongs to the technical field of data security. The method comprises the following steps: 1, taking a data storage party, a data sharing party and a data application party as connection nodes on a block chain network, and performing privacy encryption processing on dynamic data of the data storage party; 2, the data application party sends a data sharing request, the blockchain network authenticates the identity of the data application party, and the data sharing party determines whether to share data according to an authentication result; 3, during data sharing, the shared data is transmitted to the data application party from the data storage party through the block chain network, and the data application party decrypts the shared data according to the key transmitted by the data sharing party through the block chain network. Therefore, other people cannot obtain complete information through the fragment, and the risk of personal information leakage is reduced.

Description

technical field [0001] The invention relates to the technical field of data security, in particular to a blockchain-based big data privacy sharing security protection system and method. Background technique [0002] Blockchain is a shared database. The data or information stored in it has the characteristics of "unforgeable", "retaining traces throughout the process", "traceable", "open and transparent", and "collective maintenance". Compared with blockchain, big data Languages ​​are vulnerable to abnormal traffic attacks, there are security risks in data transmission, and the overall security is low. [0003] When the existing big data privacy sharing security protection system transmits and shares data, most of the privacy protection technologies used have a better effect on static data, but the current big data volume is dynamically increased during the application process, so , there are security risks in the transmission and sharing of big data, which reduces the priva...

AI Technical Summary

Problems solved by technology

[0002] Blockchain is a shared database. The data or information stored in it has the characteristics of "unforgeable", "retaining traces throughout the process", "traceable", "open and transparent", and "collective maintenance". Compared with blockchain, big data The language is vulnerable to abnormal traffic attacks, there are security risks in data transmission, and the overall security is low

[0003] When the existing big data privacy sharing security protection system transmits and shares data, most of the privacy protection technologies used have a better effect on static data, but the current big data volume is dynamically increased during the application process, so , there are security risks in the transmission and sharing of big data, which reduces the privacy of big data, and when big data is transmitted, due to the characteristics of heterogeneity, multi-source, and association of big data transmission, even if multiple data sets are desensitized separately , the data set still has the risk of personal information leakage due to correlation analysis, which reduces the security of the big data environment, and in the big data environment, there are many end users and many types of audiences, and it takes a lot of time to confirm the user identity Massive processing power, reduced big data sharing rate

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