Blockchain-based smart city information safety using method and system

A technology of city information and block chain, which is applied in the field of smart city information security and system based on block chain, can solve the problem of damage to data privacy and security, and achieve the prevention of illegal authorization acquisition, effective information sharing and processing, and sensitive information privacy The effect of protection

Active Publication Date: 2018-11-16
SHANGHAI YANHUA HEALTH TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The provision of data ownership also inevitably has the problem of compromising data privacy and security.

Method used

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  • Blockchain-based smart city information safety using method and system
  • Blockchain-based smart city information safety using method and system
  • Blockchain-based smart city information safety using method and system

Examples

Experimental program
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Embodiment Construction

[0039] Such as figure 1 as shown, figure 1 A block chain-based smart city information security system of the present invention includes block chain node A, block chain node B, and block chain node C, block chain node A, block chain node B, and block chain Each node C is equipped with a security sandbox for executing smart contracts, and each security sandbox also includes a data interface module for data access to local data.

[0040] Three types of data are stored on each blockchain node. One is the data directory, that is, metadata information. Among them, the data directory is public content, and other organizations can know the storage location of private data through the data directory. The second is the smart contract. The smart contract is the operation process code recognized by all parties. The smart contract entity is a piece of code stored on the blockchain node independent of the sandbox. The execution of the smart contract is loaded and executed in the sandbox. ...

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Abstract

The invention relates to a blockchain-based smart city information safety using method and system. The blockchain-based smart city information safety using method according to the present invention includes the following steps: receiving a request for executing a smart contract from a user; searching for a data directory on a blockchain according to the smart contract request and obtaining a requested data address; obtain encrypted data from the requested data address, decrypting the encrypted data, encrypting the decrypted data with the secret key of a corresponding sandbox, and then sendingthe data to the corresponding sandbox; performing an smart contract operation by using the decrypted data, performing consensus calculation on an operation result and the operation results of other blockchain node sandboxes; after the consensus calculation is passed, sending a result to the user who issues the request for executing the smart contract. The blockchain-based smart city information safety using method realizes effective information sharing and sensitive information privacy protection among multiple physical organization in a smart city.

Description

technical field [0001] The invention relates to a blockchain-based method and system for safely using smart city data. Background technique [0002] With the continuous development of human society, cities in the future will carry more and more people. At present, my country is in a period of accelerated urbanization, and the problem of "urban diseases" in some areas is becoming increasingly serious. In order to solve the problems of urban development and achieve sustainable urban development, the construction of smart cities has become an irreversible historical trend of urban development in the world today. [0003] With the steady advancement of smart city construction, big data sharing and exchange platforms for information sharing and exchange across ministries and social institutions have been built in various places to break through the data barriers between various organizational departments. As data is widely used to create huge value, various government departmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q20/38G06Q20/06G06F21/53H04L29/08
CPCH04L67/1097H04L67/12G06F21/53G06Q20/065G06Q20/3829
Inventor 周玲玲
Owner SHANGHAI YANHUA HEALTH TECH
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