Electronic data evidence storage method and system based on alliance chain

Abstract

The invention provides an electronic data evidence storage method and system based on an alliance chain, and provides an alliance chain member admission method based on a distributed key generation protocol; a bottom alliance chain does not depend on a centralized CA node any more, it is ensured that user certificate application is independently completed by a user, and a third-party evidence storage mechanism is not needed for agency; the invention provides an electronic data encryption and decryption method based on a double-key pair mechanism and a (t, n) threshold encryption algorithm, and ensures that a judicial institution can verify the authenticity of the electronic data while ensuring the confidentiality of the electronic data stored by a user; a distributed management mode is provided, and security threats caused by a centralized management mode are avoided. The system architecture of the evidence storage system realized based on the electronic data evidence storage method can be divided into a user layer, an application layer and a data layer, and comprises five modules of registration and login, data evidence storage, data verification, block publication and a personal center. According to the invention, safe and reliable electronic data storage can be ensured.

Description

technical field [0001] The invention relates to the technical field of blockchain, and in particular, to a method and system for storing electronic data certificates based on a consortium chain. Background technique [0002] With the rapid development of information technology, the types of evidence in the judicial field have been continuously expanded and improved. Electronic data such as electronic contracts, electronic bills, web page screenshots, and telephone recordings have become new types of electronic evidence materials, while ordinary electronic data are easy to copy, easy to tamper with, difficult to preserve, and have low probative power, so they are usually not recognized by the judicial system. The electronic data storage system can provide full-link services for the collection, storage and use of electronic data, thereby further improving the credibility of electronic data. [0003] Most of the existing certificate storage systems still use a centralized syst...

AI Technical Summary

Problems solved by technology

Due to the non-repudiation of signatures, platform users are likely to bear additional legal responsibilities

[0005] 2. The confidentiality of the electronic data stored by the user cannot be guaranteed

During the use of the existing evidence storage system, the third-party evidence depository agency will store the electronic data submitted by the user in its local database for the user's own access or call by the judicial agency, but the third-party evidence depository agency may leak the user's data. Electronic data for profit, which will seriously damage the rights and interests of users

[0006] 3. The authenticity of the electronic data stored by the user cannot be guaranteed

The alliance chain can only ensure that the data cannot be tampered with after being uploaded to the chain, but it cannot be sure whether it is authentic and credible before the chain is uploaded, so the deposit system may store a large amount of invalid electronic data

In addition, the timeliness of electronic data is strong. If you wait until a dispute occurs to verify its authenticity, the cost will be too high, and the result may be inaccurate

[0007] Therefore, the existing electronic data storage system based on alliance chain solves the integrity problem of electronic data, but the rights and interests of platform users and the authenticity of electronic data are not effectively guaranteed

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