Privacy protection access control method in wireless sensor network supported by IP

Abstract

The invention discloses a privacy protection access control method in a wireless sensor network supported by an IP. According to the method, a group signature technology is applied, system users are divided into different user groups according to different access authorities, the group users use group signatures for anonymous access to guarantee user data access privacy, and leakage of user behavior modes is prevented. According to the method, users are divided into different user groups according to different access authorities by utilizing a group signature technology, the group users generate group signatures for identity authentication, and anyone in a network can verify the correctness of the group signatures but cannot know the identities of the signers; the identity authentication and authorization process of the Hidra protocol is improved by utilizing a false ticket mechanism and a self-updating ticket mechanism, so that the unlinkability of a protocol message is ensured; the block chain technology is used for managing the group public key, so that the secret key management and Hidra protocol user revocation process is more flexible; a responsibility investigation mechanismis improved by utilizing a block chain technology, so that the responsibility investigation process is public and transparent, and possible responsibility investigation disputes are solved.

Description

technical field [0001] The invention belongs to the security field of the Internet of Things, and in particular relates to a privacy protection access control method in an IP-supported wireless sensor network. Background technique [0002] In recent years, thanks to the development of the 6LoWPAN standard, it has solved the problems that hinder the original combination of sensors and the Internet, truly realized the end-to-end communication between Internet users and nodes, and promoted the application of sensor networks. But at the same time, it also introduces a new security crisis. Attackers on the Internet can access sensor nodes more easily through global addressing. Due to the high vulnerability of the wireless sensor network itself, such as limited device resources and complex deployment environment, etc., it is easy to become the target of many security attacks or become a tool for hackers to launch security attacks (for example: Mira is composed of IoT devices. Bot...

AI Technical Summary

Problems solved by technology

The authentication and authorization process means that users need to provide identity-related information to the target service, which brings new security issues: user data access privacy

[0003] There are two main problems in the implementation of traditional access control schemes in wireless sensor networks: 1) Sensor resources are limited: sensors are subject to strict resource constraints in terms of computing power, storage capacity, and transport overhead. Complex security mechanisms cannot be used

2) Privacy leakage: The user's access behavior to sensor services may be closely related to the user's social work, preferences and other private information

However, this method completely entrusts the privacy and security of users to a third party. Once the third party is attacked and causes data leakage, the privacy and security of data access of all users will be threatened.

Blindly trusting third parties may lead to more serious consequences, such as third parties selling users' data access records privately, or handing them over to government agencies, and users' access trends and privacy preferences will be monitored

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