File security storage and sharing system and implementation method based on hybrid blockchain

Abstract

The invention discloses a file security storage and sharing system and implementation method based on a hybrid block chain, which belongs to the field of file sharing. The technical problem to be solved by the invention is how to realize file privacy protection, file non-forgery and tampering, and file authorized access , and further improve the speed of file sharing, the technical solution adopted is: the system includes a storage layer, which is used to store shared files and protect files from tampering; the storage layer uses IPFS; the sharing layer is used to record what happened The transaction information provides evidence for the traceability of the file sharing process, and is used to automatically perform identity authentication to ensure the safe sharing of files without the participation of a third party; the sharing layer includes a multi-layer blockchain model and blockchain. Smart contract; user layer, used to manage, update, view and share files; user layer is composed of participants. The method is specifically as follows: initialization; identity registration and authentication; file encryption storage; file sharing.

Description

technical field [0001] The invention relates to the field of file sharing, in particular to a system for storing and sharing files safely based on a hybrid block chain and an implementation method. Background technique [0002] In recent years, with the progress of society and the development of science and technology, the storage method of archives has also undergone a series of changes. From the initial paper storage to the current electronic archives, it is gradually developing in the direction of informatization. Paper files are the most common way of file storage. Most units have file storage departments. However, paper files have many inevitable drawbacks. Paper files are illegible or even damaged, etc. Since paper files are easy to forge and tamper with, the security of files cannot be guaranteed, and at the same time, paper files are also difficult to share, and there is a risk of leakage of personal files involving privacy. [0003] With the popularization of com...

AI Technical Summary

Problems solved by technology

[0004] First, electronic files are not absolutely safe, there are cases of malicious people attacking and tampering with files, information leakage is extremely unsafe for files involving many personal privacy; if malicious people forge their identities to carry out illegal activities , will cause serious consequences;

[0005] Second, the storage of most electronic archives is centralized, and centralized storage has a single point of failure hidden danger, and with the growth of archive data, the storage cost increases accordingly;

[0006] Third, although electronic files are convenient to share, they are not safe. File owners do not have clear ownership of their own files. Without knowing it, files are easy to spread maliciously, resulting in the leakage of private information.

IPFS is based on content addressing. Any slight content change will cause a change in the hash. Although the possibility of file changes is avoided, the data is directly uploaded to IPFS. Through the leak of the file Hash, there is still the possibility of file information leakage.

The blockchain can only process 7 transactions per second, the throughput is low, and it is easy to cause serious network congestion, which has certain limitations for scenarios that require high throughput

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