Blockchain-based time distribution and synchronization method and system, and data processing system

Abstract

The invention belongs to the technical field of information retrieval and database structures, and discloses a blockchain-based time distribution and synchronization method, and a data processing system. The method comprises the following steps: a time source issues a time; a consensus node is periodically voted from time nodes, the consensus node packs the time into a blockchain and broadcasts the block in the whole network, and the blockchain is used for recording and transmitting time blocks; the time node receives the time blocks, records the time blocks in an account book and updates a local time; and a terminal device accesses the time node to obtain the time so as to complete time synchronization. The blockchain-based time distribution and synchronization method disclosed by the invention has the advantages of adapting to network topology changes and being able to resist the attacks of malicious nodes. By adoption of a consensus mechanism of a POS, time synchronization can be effectively realized; and time distribution and synchronization are realized with higher efficiency and lower cost. By adoption of the blockchain-based time distribution and synchronization method disclosed by the invention, the problem that the original time distribution mode cannot avoid the attacks of the malicious nodes, and a small number of malicious nodes may affect the operation of the entire system is mainly solved.

Description

technical field [0001] The invention belongs to the technical field of information retrieval and database structure, and in particular relates to a blockchain-based time distribution and synchronization method and system, and a data processing system. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: The Internet of Things is the Internet that connects things to things. The traditional Internet uses people as the main body to obtain information, while the Internet of Things automatically reads data through wireless sensors, and the system will filter the required data and transmit it to truly achieve the goal of automatic information capture without human intervention. In this process, these Internet of Things need to use many distributed units to cooperate to complete information collection, remote monitoring and automatic management, so the accuracy and security of time are very important. In the distributed...

AI Technical Summary

Problems solved by technology

But the Internet of Things itself is a relatively open system, that is to say, there are malicious nodes that will attack the system. At this time, these sensor nodes cannot identify the authenticity of the received information.

Therefore, some nodes may obtain the wrong time for synchronization, and even the worst case is that these normal ordinary nodes will broadcast fake time information, causing more and more nodes to be infected

As a result, a small number of malicious nodes affected the time synchronization process of the entire system

[0003] In summary, the problems in the prior art are: Each node in the Internet of Things has the need to synchronize time, because the Internet of Things system itself is an open system, the system is very vulnerable to attacks, so that ordinary nodes will receive fake time, making their own local time inconsistent with the authoritative time, resulting in Internet of Things The local time between the terminal nodes is different, and they cannot cooperate with each other, and even accidents occur, such as the chaotic vehicle path planning in the unmanned driving system and the opening and closing of the municipal engineering of the smart city system.

Another problem is that it is impossible to determine whose time has a problem between nodes, and they all think that the local time is normal, and there is no error correction mechanism

[0004] The difficulty and significance of solving the above technical problems: Preventing time from being tampered with by malicious nodes, how to efficiently and safely distribute time and other issues have brought difficulties to existing security sharing methods

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