Distributed encryption storage method and system, computer equipment and readable storage medium

Abstract

The invention belongs to the technical field of data encryption storage, and relates to a distributed encryption storage method and system, computer equipment and a readable storage medium. The method comprises the steps: enabling a file owner to put forward a file uploading application to determine a corresponding file participant; enabling the file participant to select a (t-1)-degree polynomial and determine a random key value; respectively calculating random key values of t file participants, and distributing the random key values to the corresponding file participants; dividing the random key value obtained by each file participant into n parts, and sharing a secret share; recovering a random key value from t or more secret shares, and encrypting the file by using the recovered random key value and adopting an SM4 algorithm; uploading the encrypted file to the IPFS system, and generating a corresponding hash value. According to the method, distributed storage is realized through the IPFS, so that the disaster recovery capability and the acquisition capability of the file are improved; file encryption and key management are realized through SM4 and distributed key generation.

Description

technical field [0001] The invention belongs to the technical field of data encryption storage, and in particular relates to a distributed encryption storage method and system, computer equipment and a readable storage medium. Background technique [0002] With the continuous development of Internet technology, fields such as e-commerce, finance, and medical care are gradually adopting Internet technology to provide reliable and convenient services. However, in the era of large-scale data growth, the storage, search and application of data are facing severe challenges. The existing storage methods such as stand-alone databases can no longer meet the needs of data processing. Existing storage methods often store data in a unified manner, resulting in huge and complicated databases, chaotic storage and difficult extraction; in terms of key management, if a single key is used for management, it is easy to cause problems such as excessive concentration of power, leakage and loss...

AI Technical Summary

Problems solved by technology

[0005] Based on the problems existing in the prior art, the present invention uses a distributed key generation scheme to solve problems such as power concentration and key leakage, uses the IPFS distributed storage system to solve the problem of malicious attack systems, and improves the security and robustness of file management

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