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Document hierarchical desensitization encryption method

An encryption method and document classification technology, applied in the field of computer security, to achieve the effect of improving flexibility and security, accurate positioning, and improving flexibility

Active Publication Date: 2019-05-10
GUIZHOU UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] But in some special cases, such as the tasks mentioned in some high security level documents need to be completed by people with different security levels

Method used

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  • Document hierarchical desensitization encryption method
  • Document hierarchical desensitization encryption method
  • Document hierarchical desensitization encryption method

Examples

Experimental program
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Embodiment 1

[0026] Embodiment 1 of the present invention: document hierarchical desensitization encryption method,

[0027] Initialization: divide the security level of the document, and the corresponding personnel security level; determine the encryption algorithm, system key parameters, etc. In this embodiment, the document security level can be preferably divided into: document security level one > document security level two > document security level three > document security level four > document security level five; corresponding personnel security levels can be divided from high to low It is: personnel safety level 1 > personnel safety level 2 > personnel safety level 3 > personnel safety level 4 > personnel safety level 5. Security personnel can process documents whose document security level is not higher than their corresponding document security level, and cannot process documents whose document level is higher than their own corresponding document security level.

[0028] The...

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Abstract

The invention discloses a document hierarchical desensitization encryption method. The invention discloses a document desensitization technology. The document classification technology and the document encryption technology are combined to realize document confidentiality; the method has the advantages that a computable linear algebraic model of the sensitive information is constructed according to the requirements on integrity, availability, safety sharing, document classification and work under special conditions, quick and accurate positioning of the sensitive information and multi-information association determination are achieved, national confidentiality is prevented from being leaked, and the method plays a positive role in guaranteeing the national safety. For persons with different levels, the hierarchical decryption access control technology of the confidential document is realized, i.e., the persons with different security levels can obtain different pieces of decryption information when decrypting the same confidential document. Implementing hierarchical decryption capabilities. And the access control flexibility and security of the encrypted file in the transmission and sharing scheme are improved. The hierarchical desensitization encryption method is suitable for safety office requirements of banks, military units, party and government agencies and the like.

Description

technical field [0001] The invention relates to the technical field of computer security, in particular to a hierarchical desensitization and encryption method for documents. Background technique [0002] Documents are stored in computer systems, and are transmitted and exchanged through computer networks. Among them, once state secrets, business information, and personal privacy data are illegally stolen or deleted, it will cause incalculable losses. Construct multi-level security levels for documents, and classify users at the same time, so that user permissions correspond to document levels. In order to achieve the control and management of user rights, reduce or prevent attacks. [0003] The danger of sensitive data being leaked and attacked exists in all parts of its life cycle, such as production, storage, etc. These risks include: database intrusion, protocol loopholes, unauthorized access by insiders, and wrong operations by legitimate employees. Most companies fo...

Claims

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Application Information

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IPC IPC(8): G06F21/60G06F21/62
Inventor 彭长根魏自强张爽王艳方粘粘
Owner GUIZHOU UNIV
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