A method for anti-tampering of electronic files

Abstract

The invention discloses an electronic document tamper-proof method. The electronic document tamper-proof method is characterized by comprising the following steps that first, hashed values to be processed are packaged into hashed value packets by a master node and are released to slave nodes; second, the master node calculates the hashed values of the hashed value packets; third, the master node uses the new hashed values as new hashed values to be processed, and the new hashed values and the hashed values of the hashed value packets are together packaged into new hashed value packets and published by the master node; fourth, all the hashed value packets received by the slave nodes are connected into a hashed packet chain, and tamper-proof check of electronic documents is achieved through the hashed packet chain. According to the electronic document tamper-proof method, attack from a system manager can be effectively monitored and prevented, the probability that the electronic documents are tampered is reduced, the ability of preventing tamper of a large size of data is achieved through very small space cost and time cost, and meanwhile, privacy of the electronic documents is guaranteed.

Description

Technical field [0001] This application relates to anti-tampering technology, in particular to an anti-tampering method for electronic files. Background technique [0002] With the continuous development of the Internet, more and more users publish electronic files or upload files through the Internet, including some important electronic files such as written commercial contracts, technical documents, and published external statements and comments. Due to the digital characteristics of network electronic files and electronic files, they can easily be tampered with without being noticed. When users receive services, they usually can only passively choose to trust the capabilities and behaviors of the service provider. Current service providers, such as online disks, cloud disks, Weibo, WeChat, etc., have maximum rights in their systems, and their behavior cannot be effectively monitored. The system administrator can arbitrarily delete and modify the data in the system without be...

AI Technical Summary

Problems solved by technology

However, its role is mainly limited to allowing the user to check that the downloaded file is consistent with the file provided by its server

It is worth noting that there is currently no effective and convenient mechanism to protect the hashed electronic file itself from being modified and deleted, that is, people inside and outside the system may replace the content of the electronic file and its corresponding hash at the same time, making it difficult to guarantee the security of the electronic file. Anti-tampering

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