A Privacy-Preserving Hierarchical Dynamic Group Key Agreement Method

A technology for group key negotiation and privacy protection, applied in the field of hierarchical dynamic group key negotiation based on privacy protection, which can solve the problems of exposing personal identity information, reducing computing and communication overhead, and being unable to flexibly protect sensitive data. , to protect personal privacy, improve security, and ensure reliability.
CN113346993BActive Publication Date: 2022-07-15ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
Publication Date
2022-07-15

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Abstract

The invention proposes a layered dynamic group key negotiation method based on privacy protection. The steps are: initializing the protocol parameters in the group key negotiation network domain, generating public / private key pairs of the authentication center and terminal members, Terminal members perform identity authentication of hidden attributes. After successful authentication, terminal members calculate encryption keys and decryption keys according to their own attribute weights to verify the consistency of the keys. Terminal members can also apply to the authentication center to change attributes to participate in High-level or low-level group key negotiation. The invention adopts the identity authentication technology of hidden attributes, which can avoid the leakage of personal privacy information while performing identity authentication, and set threshold authority according to the attribute weight value, participate in group communication with different confidentiality, and improve the reliability of data communication. The dual authentication mechanism of identity authentication and attribute weight matching greatly improves the security of the system and makes group key negotiation more flexible, efficient and practical.
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Description

technical field

[0001] The present invention relates to the technical field of information security, and in particular, to a method for layered dynamic group key negotiation based on privacy protection. Background technique

[0002] With the continuous in-depth development of technologies such as big data, artificial intelligence and the Internet of Things, it has provided convenience for people's daily life and provided impetus for the development of the country and society. The core of these technologies is secure resource sharing, information exchange and transmission among multi-party entities. At the same time, the exchange and processing of a large amount of data also brings a series of security risks. How to ensure that the data is not leaked when a large amount of data is exchanged, and how to ensure that the identity information of the communication entity is not leaked, which brings forward the information security technology. a huge challenge.

[0003] As a link...

Claims

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