Terminal Pairing via Unidirectional Security Data Transfer
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Solution Overview
Problem
Existing authentication methods for devices, such as Bluetooth and Wi-Fi, require manual entry of PIN codes or keys, which is error-prone and vulnerable to interception, especially when one device lacks a keyboard, compromising security and ease of use.
Innovation Solution
A two-phase pairing method is employed, where an initial insecure pairing phase is followed by a secure pairing phase using a unidirectional communication channel for transmitting security data as a representation, such as LED flashes or sound sequences, ensuring secure connection without human intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual PIN code entry is used for authentication, then security can be achieved, but input errors occur and confidentiality is compromised
Solution Approach 1:
The patent replaces the mechanical manual input system with an automated optical recognition system. The terminal captures an image containing the PIN code and uses optical character recognition to automatically extract and input the code, eliminating manual typing errors while maintaining security.
Solution Approach 2:
The patent introduces an intermediary image as a carrier for the PIN code. Instead of direct manual input or electronic transmission, the PIN code is displayed in an image that the terminal captures and processes, serving as a secure intermediary that prevents eavesdropping while enabling automatic input.
2Reliability
If manual PIN code entry is used for authentication, then security can be achieved, but susceptibility to spying increases
Solution Approach 1:
The patent replaces the vulnerable manual input process with automated image capture and optical recognition. The PIN code is transmitted through an image rather than being typed or electronically transmitted, making it resistant to traditional eavesdropping methods.
Solution Approach 2:
The patent creates a visual copy of the PIN code in the form of an image. This image copy serves as the authentication carrier, allowing the terminal to capture and process the code without exposing it through traditional input methods that are susceptible to spying.
3Ease of operation
If pairing is performed without unidirectional channel verification, then connection establishment is simpler, but security is compromised
Solution Approach 1:
The patent divides the pairing process into two distinct phases: a first pairing phase for initial connection establishment, and a second pairing phase for security verification using a unidirectional communication channel. This segmentation allows both simplicity and security to be achieved at different stages.
Solution Approach 2:
The patent performs preliminary pairing actions in the first phase to establish basic connectivity, then follows with security verification in the second phase. This preliminary action approach allows the system to be simple during initial connection while maintaining high security through subsequent verification.
Data Source
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AI summary
The invention relates to a method of pairing a first terminal, called the communication terminal wishing to transmit and receive data with a second terminal, called the acceptor terminal.According to the present technique, said method comprises: - a first unsecure pairing phase (A00) of said transactional terminal with said communication terminal, delivering at least one pairing parameter to said communication terminal (Com-Term), via a first bidirectional wireless communication channel of radio type; - a second secure pairing phase (B00) of said transactional terminal (P-Term) with said communication terminal (Com-Term), said second pairing phase implementing a second unidirectional communication channel, used by said transactional terminal to transmit a security data of said first communication channel (CK) to said communication terminal (Com-Term), according to said at least one pairing parameter of said communication terminal.