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Method and device for data security encryption based on alliance block chain

A blockchain and data technology, applied in electrical components, transmission systems, etc., can solve problems such as data leakage and data security hidden dangers in data storage networks, and achieve the effect of transparent access, security protection, and high degree of transparency

Active Publication Date: 2017-10-24
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the existing consortium blockchain technology solutions, it only protects the data from being leaked during the upload process, and protects the data stored in the data storage network from being lost or tampered with.
However, there are still some data security flaws in the consortium blockchain technology. For example, when data is accessed, since all data collection nodes in the data storage network can view the complete data belonging to a certain data collection node, once a certain When the data storage node is maliciously attacked, it may cause data leakage in the data storage network, which brings certain security risks to the data stored in the alliance blockchain

Method used

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  • Method and device for data security encryption based on alliance block chain
  • Method and device for data security encryption based on alliance block chain
  • Method and device for data security encryption based on alliance block chain

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Experimental program
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Embodiment 1

[0038] figure 1 It is a flow chart of a data security encryption method based on consortium blockchain provided by an embodiment of the present invention. Please refer to figure 1 , the specific steps of the data security encryption method based on the alliance blockchain include:

[0039] Step S10: the data collection node obtains the pseudonym identity and the symmetric key corresponding to the pseudonym identity.

[0040] The purpose of this step is that the data acquisition node uses a pseudonym to hide its real node identity, and uses a pseudonym to communicate with other nodes. It can be understood that since the nodes communicating with the data collection node cannot know the true identity of the data collection node, the concealment and security of the data collection node are further improved, and the malicious attacks of the data node by other nodes are reduced. This may lead to data loss, leakage and forgery.

[0041] In addition, data acquisition nodes can obt...

Embodiment 2

[0059] figure 2 It is a flow chart of another data security encryption method based on consortium blockchain provided by the embodiment of the present invention. figure 2 In steps S10-S16 and figure 1 Same, no more details here.

[0060] like figure 2 As shown, as a preferred embodiment, it also includes:

[0061] Step S20: the data storage node broadcasts the correspondence between the pseudonym encrypted data and the pseudonym identity and the pseudonym encrypted data to other target data storage nodes.

[0062] The purpose of the data storage node broadcasting the data stored by itself to other target data storage nodes is that other target data storage nodes can also obtain the data in the data storage node, which ensures the transparency of data sharing. It is understandable that when the data storage node fails or is attacked and the data is lost, the user can still obtain the data from other target data storage nodes, which ensures that the stored data is not eas...

Embodiment 3

[0067] Corresponding to the data collection node storing data in the data storage node, this embodiment further provides a method for the target data collection node to access the data of the data collection node. For specific steps, please refer to image 3 .

[0068] image 3 It is a flow chart of a data access method corresponding to a data security encryption method based on consortium blockchain provided by an embodiment of the present invention. like image 3 As shown, on the basis of the foregoing embodiments, it also includes:

[0069] Step S30: the data collection node sets access conditions to control other target data collection nodes to use the target pseudonym to access data.

[0070] In this step, the access conditions may include: the target pseudonym identity is within the scope of the pseudonym identity set by the data collection node, the data accessed by the target pseudonym identity is within the data sharing range set by the data collection node, and th...

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Abstract

The invention discloses a method and a device for data security encryption based on an alliance block chain. The steps of the method comprise: a data acquisition node obtaining pseudonym identity and a symmetric key corresponding to the pseudonym identity; after the data acquisition node obtains data, sending an uploading request to a data storage node; the data storage node receiving final enciphered data, and decoding the final enciphered data through a private key of the data storage node, to obtain pseudonym enciphered data; the data storage node storing corresponding relations of the pseudonym enciphered data with the pseudonym identity, and the pseudonym enciphered data into a local database; and the data storage node adding the data stored in set time into a block chain. Through anonymization, just the data acquisition node which uploads the data knows mapping correlation of a pseudonym used in data uploading and real identity of the data acquisition node, so as to protect security of real data. In addition, the device for data security encryption based on an alliance block chain has the same above effect.

Description

technical field [0001] The invention relates to the field of data security storage, in particular to a data security encryption method and device based on an alliance block chain. Background technique [0002] With the development of the network, due to various reasons, serious problems such as data loss, leakage or tampering abound, and data storage security has increasingly become the focus of people's attention and attention. Ensuring data storage security is everything Prerequisites for using data to address practical problems. [0003] Blockchain technology, as a new type of decentralized distributed security storage technology, has become a hot research field due to its safe and reliable characteristics. Blockchain is a shared distributed database. It uses encrypted chain blockchain structure to verify and store data, and uses distributed node consensus algorithm to generate and update data. It uses cryptography to ensure that data cannot be tampered with and forged, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
Inventor 张泽航张浩川余荣康嘉文
Owner GUANGDONG UNIV OF TECH
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