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Supervision-friendly block chain content privacy protection system, message sending method and message query method

A privacy protection system and blockchain technology, applied in the field of computer information security, can solve problems such as the inability to effectively supervise user privacy, and achieve the effect of ensuring data security and integrity and enhancing security

Pending Publication Date: 2022-04-15
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a supervision-friendly blockchain content privacy protection system, message sending and query method, which are used to solve or at least partially solve the technical problem in the prior art that effective supervision cannot be realized while protecting user privacy

Method used

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  • Supervision-friendly block chain content privacy protection system, message sending method and message query method
  • Supervision-friendly block chain content privacy protection system, message sending method and message query method
  • Supervision-friendly block chain content privacy protection system, message sending method and message query method

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Experimental program
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Embodiment 1

[0043] The embodiment of the present invention provides a supervision-friendly blockchain content privacy protection system, including a server and a client,

[0044] The server is located on the Ethereum platform and implemented in the form of smart contracts, including the first communication module, the first encryption and decryption management module and the supervision authority management module. The decryption management module is used to store and manage encrypted data, and the supervision rights management module is used to verify user rights and provide super administrator rights for authorized third parties. Among them, the Ethereum platform can provide public chain and test chain environments, And in the test chain, the transaction information and content of each chain can be displayed in real time, and the operation and data storage of the server can be tested;

[0045] The client uses a browser as a carrier, and an Ethereum wallet application is installed on the...

Embodiment 2

[0090] Based on the same inventive concept, this embodiment provides a message sending method based on a supervision-friendly blockchain content privacy protection system, including:

[0091] The client obtains the message content and the receiver's address, generates the first session key used in this session, and uses the first session key to symmetrically encrypt the message content;

[0092] The client obtains the public key from the server, and asymmetrically encrypts the first session key used in this session;

[0093] The client sends the encrypted first session key, the encrypted message content, and the address of the recipient to the server;

[0094] The session record is stored on the chain, and the session record includes the encrypted first session key, the encrypted message content, the address of the receiver, and the address of the sender.

[0095] See figure 1 , is a flow chart of sending a message by a user in the embodiment of the present invention, where ...

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Abstract

The invention provides a supervision-friendly blockchain content privacy protection system, a message sending method and a message query method. The system is mainly composed of a server side and a client side, and the server side is located on an Ethereum platform, is achieved in an intelligent contract mode and is responsible for providing the functions of key negotiation, key management, encrypted data storage, user query processing and supervision for a third party; the client uses a browser as a carrier, combines a common Ethereum wallet application to realize local encryption and decryption of contents, interacts with a contract of the server, initiates a transaction and other behaviors, and provides friendly sending and query interfaces for a user and a third-party supervisor. According to the method, the problem of user privacy protection on the block chain is solved, and an encrypted transmission communication mode can be provided for the user; and meanwhile, the content on the block chain can be supervised, and supervision-friendly encryption transmission on the block chain is realized under the condition that normal user communication is not influenced.

Description

technical field [0001] The invention relates to the technical field of computer information security, mainly relates to the Ethereum block chain, and in particular to a supervision-friendly block chain content privacy protection system, message sending and query methods. Background technique [0002] Blockchain 2.0 has entered the stage of programmable finance. At this stage, the blockchain system penetrates into the economy, finance and capital markets, forming smart contracts for stocks, bonds, futures, loans, mortgages, property rights, smart properties, etc. In addition to building a monetary system, blockchain also has many application cases in the pan-financial field. For example, the core of smart contracts is to use program algorithms to replace people to execute contracts. These contracts contain three basic elements: offer, commitment, and value exchange, which can realize the automatic combination and mutual coordination of assets, processes, and systems. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/40H04L67/10H04L67/1097H04L67/01
CPCH04L63/10H04L63/105H04L63/0428H04L67/10H04L67/1097
Inventor 余荣威罗盟凌竟航张琳汶罗润州
Owner WUHAN UNIV
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