Wireless Terminal MAC Address Update via Barcode Scanning
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Solution Overview
Problem
In wireless local area networks (WLANs), existing methods for changing MAC addresses to enhance security are not universally applicable, leading to communication failures when a MAC address is changed, as the receiving terminal cannot parse messages correctly, resulting in disrupted connections between wireless terminals.
Innovation Solution
A method where a wireless terminal acquires another terminal's MAC address, generates identifier information through hash operations, and sends this information in a message for verification, allowing the terminals to update their MAC addresses and maintain secure communication even when the address changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the receive end periodically changes MAC address to prevent eavesdropping, then security of user information is improved, but communication reliability deteriorates when the transmit end cannot acquire the changed MAC address
Solution Approach 1:
The transmit end performs preliminary actions by scanning barcodes (QR code, data matrix code, or audio code) to acquire the receive end's current MAC address before sending messages. This preliminary acquisition ensures that even if the MAC address changes periodically, the transmit end has the updated address and can maintain communication without interruption.
Solution Approach 2:
The patent introduces barcode scanning and audio code as intermediary mechanisms to transfer MAC address information. Instead of directly relying on air interface MAC addresses that can be eavesdropped, the system uses these intermediary carriers to securely transmit the receive end's current MAC address to the transmit end, solving both security and reliability issues.
2Ease of operation
If the transmit end carries the receive end's MAC address in the message header, then message routing is enabled, but user information leakage occurs through eavesdropping on the air interface
Solution Approach 1:
The patent uses barcode scanning and audio code as intermediary carriers to transfer the receive end's current MAC address to the transmit end. This intermediary mechanism allows the transmit end to obtain the correct MAC address for message routing without exposing it through eavesdroprable air interface transmissions, thus enabling routing while preventing information leakage.
Solution Approach 2:
The patent replaces the traditional air interface MAC address transmission mechanism with barcode scanning and audio code-based transmission. This substitution moves the sensitive MAC address information from the vulnerable wireless air interface to more secure local scanning/audio transmission channels, enabling routing functionality while eliminating the eavesdropping vulnerability.
Data Source
AI summary
A method for establishing a connection by a terminal, an apparatus, and a system, where the method includes acquiring, by a first wireless terminal, a first media access control (MAC) address of a second wireless terminal, sending, by the first wireless terminal, a first message carrying identifier information such that the second wireless terminal receives the first message carrying the identifier information and verifies the identifier information, where the identifier information is obtained by the first wireless terminal according to at least the first MAC address, receiving, by the first wireless terminal, a first response message that is sent by the second wireless terminal and that carries a second MAC address of the second wireless terminal, and establishing, by the first wireless terminal, a connection to the second wireless terminal according to the second MAC address.