Archive secure storage and sharing system based on hybrid block chain and implementation method

Abstract

The invention discloses an archive secure storage and sharing system based on a hybrid block chain and an implementation method, belongs to the field of archive sharing, and aims to solve the technical problem of how to realize archive privacy protection, prevent archives from forging and tampering, enable authorized access of the archives, and improve the archive sharing speed. According to the technical scheme, the system comprises a storage layer which is used for storing shared files and protecting the files against tampering, and adopts an IPFS; a sharing layer which is used for recordinggenerated transaction information, providing evidences for tracing of the file sharing process, automatically executing identity authentication and guaranteeing safe sharing of files under the condition that no third party participates, and comprises a multi-layer block chain model and an intelligent contract on a block chain; and a user layer which is used for managing, updating, checking and sharing files, and is composed of participants. The method specifically comprises the following steps: initializing; identity registration and authentication; encrypting and storing the archives; and archive sharing.

Description

technical field [0001] The invention relates to the field of file sharing, in particular to a hybrid block chain-based file security storage and sharing system and implementation method. Background technique [0002] In recent years, with the progress of society and the development of science and technology, the storage methods of archives have also undergone a series of changes. From the initial paper storage to the current electronic archives, it is gradually developing in the direction of informationization. Paper files are the most common way of file storage. Most units have file storage departments, but there are many unavoidable disadvantages of paper files. For example, the storage of paper files has high environmental requirements, and the humid environment is easy to Paper files are illegible or even damaged. Because paper files are easy to forge and tamper, the security of files cannot be guaranteed. At the same time, paper files are also difficult to share, and ...

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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