Wireless AP Privacy Validation for Controlled Parameter Rotation
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Solution Overview
Problem
Existing wireless networks face challenges in protecting client device privacy by obfuscating and rotating observable parameters, particularly due to Denial-of-Service (DoS) attacks from frequent epoch requests and inefficient parameter rotations.
Innovation Solution
Implementing a method where a first computing device accepts or rejects frame anonymization parameters based on rotations proposed by a second computing device, ensuring both parties in a wireless communication, such as an AP and a STA, are protected from excessive or inappropriate parameter changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frame anonymization parameters are rotated frequently to enhance privacy protection, then client device privacy is improved, but resource overload and DoS attacks increase
Solution Approach 1:
The patent implements a feedback mechanism where the access point validates privacy requests from client devices by checking epoch timing and rotation history. The access point responds with validation results, allowing it to identify and reject malicious DoS requests while accepting legitimate privacy protection requests, thus resolving the contradiction between frequent parameter rotation for privacy and prevention of resource overload
Solution Approach 2:
The patent applies preliminary action by pre-establishing epoch timing information and rotation history in the access point before DoS attacks occur. When a privacy request arrives, the access point checks whether the requested epoch is valid based on pre-stored timing data and rotation patterns, enabling proactive prevention of DoS attacks while maintaining privacy protection
2Reliability
If parameter rotation is implemented to obfuscate observable parameters, then client device privacy is improved, but network efficiency deteriorates
Solution Approach 1:
The patent applies partial action by implementing parameter rotation only when and where necessary - specifically when client devices request privacy protection and the access point validates the request as legitimate. The access point does not continuously rotate parameters for all devices, but only responds to validated privacy requests, thus maintaining privacy protection while avoiding unnecessary network overhead and efficiency degradation
Data Source
AI summary
Validation of privacy requests for mutual Access Point (AP) and client device protection may be provided. A first computing device may accept association with a second computing device. Then the first computing device may receive frame anonymization parameters associated with a parameter rotation from the second computing device. Next, the first computing device may determine to one of: i) accept the parameter rotation based on the frame anonymization parameters; and ii) reject the parameter rotation based on the frame anonymization parameters.