Encryption method of hierarchical data in hierarchical tree system

Abstract

The invention discloses an encryption method of hierarchical data in a hierarchical tree system, which is used for ensuring the security of information transmission in the system with a hierarchical tree structure. The technical scheme of the invention is that the encryption method comprises the following steps of: firstly, configuring encryption and decryption hardware equipment in the system bya system management center, wherein individual information of the user and feature information of group users are stored in the encryption and decryption hardware equipment; when each user transmits files to other users or group users, encrypting the files by an encryption key generated by the feature information of a target receiver; and when the users receive the transmitted files, decrypting by using a decryption key generated by the feather information, thereby realizing the file transmission various hierarchies in the system. The invention not only can conveniently realize the one-to-oneand one-to-many file transmission, but also ensure the security of the file transmission because an illegal receiver cannot obtain an accurate decryption key.

Description

technical field [0001] The invention relates to a layered data encryption method in a tree-like layered system corresponding to the division of writing levels, belonging to the technical field of data processing. Background technique [0002] In real life, many organizations have a tree-like hierarchical system structure. For example, the military system is divided into army, division, brigade, regiment, battalion, company, and platoon. It is strictly stipulated that subordinates obey their superiors, and superiors can read subordinate documents. Unable to read superior's files. For another example, government agencies, enterprises and public institutions all have similar hierarchical structures. Therefore, it is of great practical significance to study information security issues of this hierarchical structure. [0003] At present, there are two main types of encryption technology products produced by some information security manufacturers at home and abroad, one adopts ...

AI Technical Summary

Problems solved by technology

[0007] Although any third party intercepts the ciphertext c, since it cannot deduce the decryption key k2 from the public encryption key k1, it cannot recover the plaintext m

[0008] Regardless of whether the asymmetric encryption system or the symmetric encryption system is adopted, it has the disadvantages of difficult key management and distribution management, high cost, and dependence on the CA center, and it is difficult to realize one-to-many file transfer in the system, resulting in high overall use costs. The implementation is difficult, which affects the network information security of enterprises and institutions

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