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Authorized access method and system for block chain privacy data

A privacy data and data access technology, applied in the blockchain field, can solve problems such as unsatisfactory, data leakage, poor data privacy, etc., and achieve the effect of high control, avoiding leakage, and ensuring security

Pending Publication Date: 2022-05-13
壹链盟生态科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1) The data used to upload to the blockchain is visible to all participants in the blockchain, the data privacy is poor, and there is still a risk of data leakage
[0006] 2) When using symmetric or asymmetric encryption technology to encrypt user data, although the privacy of data is guaranteed, it can only support one-to-one secure transmission, which cannot meet the needs of users to provide data services to multiple third parties at the same time

Method used

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  • Authorized access method and system for block chain privacy data
  • Authorized access method and system for block chain privacy data
  • Authorized access method and system for block chain privacy data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as figure 1 As shown, a method for authorized access to blockchain privacy data, including:

[0055] S11. Determine the initial public key and initial key through the manager module, store the initial public key on the block chain, transmit the initial key to the trusted authorization service module, and pass the initial key to the trusted authorization service module. Stored in the server, the initial public key is used for data encryption, and the initial key is used for data decryption.

[0056] S12. Obtain the initial public key on the blockchain through the data release module, and encrypt the business data according to the initial public key to obtain private data, where the private data includes a service ID.

[0057] S13. Obtain a service access list through the data publishing module, and transmit the service access list and privacy data to the blockchain, where the service access list includes a mapping relationship between at least one visitor account a...

Embodiment 2

[0086] Such as figure 2 As shown, an authorized access system for blockchain privacy data includes a manager module 21 , a data release module 22 , a data access module 23 , a trusted authorization service module 24 , a network access isolation module 25 and a server 26 .

[0087] The manager module 21 is used to generate an initial public key and an initial key, publish the initial public key to the block chain, and transmit the initial key to the trusted authorization service module 24 .

[0088] The data release module 22 is connected with the manager module 21 through the block chain, and the data release module 22 is used to obtain the initial public key from the block chain, encrypt the business data according to the initial public key, obtain the privacy data, and Generate a business access list, and transmit the business access list and private data to the blockchain.

[0089] The data access module 23 is connected with the data publishing module 22 through the block...

Embodiment 3

[0094] Such as image 3 As shown, the present application provides an authorized access device for blockchain privacy data, the authorized access device 30 includes a memory 31 and a processor 32, and the memory 31 and the processor 32 are connected to each other through a bus 33;

[0095] The memory 31 stores computer-executable instructions;

[0096] The processor 32 executes the computer-executed instructions stored in the memory, so that the processor executes the method for authorized access to blockchain private data as described in Embodiment 1.

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PUM

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Abstract

The invention discloses an authorized access method and system for private data of a block chain, belongs to the technical field of block chains, and realizes one-to-many data service of user data while ensuring that the private data of the user is not leaked. According to the method, an attribute-based encryption and decryption mechanism is used, so that only users conforming to rules can decrypt private data, and leakage of the private data is avoided. According to the method, the access rule of the private data can be self-defined, so that the data publisher can self-define the data sharing rule, the security of the private data is ensured, and the control of the data publisher on the private data is higher.

Description

technical field [0001] The invention belongs to the technical field of block chains, and in particular relates to a method and system for authorized access to block chain private data. Background technique [0002] With the rapid development of society, the degree of digitalization and informationization is getting higher and higher, and data is being collected and analyzed continuously. Data is the most valuable asset in today's economic activities. Companies can use the collected data to launch customized services, optimize decision-making processes, and predict future trends. While people are enjoying the convenience brought by big data, concerns about personal privacy are gradually growing. [0003] Taking various applications installed on smart devices as an example, although smart devices can control the access rights of various applications through permission management, various applications will integrate third-party services (such as credit data and payment informa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/62G06F21/60
CPCG06F21/6245G06F21/604G06F21/602
Inventor 张博
Owner 壹链盟生态科技有限公司