Electronic file access control method and system based on hierarchical security encryption

Abstract

The invention discloses an electronic file access control method and system based on hierarchical security encryption. The electronic file access control method includes the steps: firstly, setting the security level of an electronic file, then distributing a grading key to an electronic file sender, carrying out grading encryption on the electronic file, carrying out grading access control, and finally updating the key. The electronic file access control system comprises a user registration/management module, an electronic file security classification management module, an electronic file classification encryption module, an electronic file classification decryption module, a key distribution management module, a key calculation recovery module, an electronic file sending/receiving moduleand a database module. According to the invention, the electronic file is encrypted in a graded manner according to the security level of the electronic file, and graded decryption and access controlare performed on the electronic file according to the security level of the user, so that the multi-level security of the electronic file is realized, and the security of the electronic file is effectively protected. Through hierarchical encryption and hierarchical decryption, hierarchical access control of the electronic file is realized.

Description

technical field [0001] The invention belongs to the field of electronic file security management and control, and in particular relates to an electronic file access control method and system based on hierarchical security encryption. Background technique [0002] With the in-depth development of office automation, more and more information exists in the form of electronic files in party and government departments at all levels, national defense and military industries, and enterprises and institutions, making the security and sharing of electronic files more and more important. more attention. Especially electronic documents involving state secrets and commercial secret information, once leaked, will seriously affect national security, interests and the development of enterprises. [0003] Generally, electronic documents will be protected by grades according to the degree of damage to safety and interests caused by their disclosure. For commercial secrets, electronic docum...

AI Technical Summary

Problems solved by technology

However, the current access control technology for electronic files neither effectively solves the problem of safe use of electronic files according to the user security level, nor solves the access control problem of hierarchical encryption and multi-level authorization of electronic files from the perspective of cryptography , thus unable to effectively prevent users from unauthorized access to electronic files

Moreover, at present, the electronic files of many units are mainly stored in the unit server database in the form of plain text, and the electronic files are not encrypted, which may easily cause the leakage of sensitive information

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