Recording Media Authentication Using Offline QR Code Exchange
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Solution Overview
Problem
Existing cybersecurity measures are inadequate for authenticating devices that operate offline, leaving them vulnerable to unauthorized access and data theft.
Innovation Solution
A method using removable recording media with pre-recorded identification information and algorithms to perform offline authentication through QR code patterns, ensuring authenticity verification without network connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If offline authentication is implemented without network connection, then device security against unauthorized access is improved, but the complexity of authentication mechanism increases
Solution Approach 1:
The patent uses QR codes as visual copies of authentication data that can be captured by imaging devices. Instead of requiring direct electronic communication or complex cryptographic handshakes, the system creates visual representations of authentication tokens that can be scanned and verified, simplifying the offline authentication process while maintaining security
Solution Approach 2:
The patent introduces an imaging device as an intermediary between the recording medium and the authentication system. The imaging device captures QR codes displayed on screens, enabling authentication without direct network communication. This intermediary simplifies the connection between offline devices and the authentication verification process
2Ease of operation
If QR code patterns are used for authentication, then ease of operation is improved, but the precision of authentication verification may be reduced
Solution Approach 1:
The patent transitions from traditional linear authentication methods to two-dimensional QR codes. This dimensional change allows encoding more authentication information within a compact visual format, enabling both ease of scanning (improving operation) and maintaining verification precision through the structured data embedded in the QR code pattern
3Reliability
If pre-recorded identification information is stored in non-user area, then security against data tampering is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent divides the recording medium into distinct functional areas: a user area for writable data and a non-user area for pre-recorded identification information and algorithms. This segmentation allows secure, tamper-resistant storage of critical authentication data while maintaining standard manufacturing processes, as the non-user area is simply a protected portion of the existing flash memory structure
Data Source
AI summary
A method is provided that determines authenticity of a second recording medium mounted in a second device by using a first device mounted with a first recording medium. A non-user area of the first recording medium previously records first identification information and first algorithm data. A controller of the first recording medium causes a first display device to display a first image pattern and, after display of the first image pattern, causes a first imaging device to capture a second image pattern displayed on a second display device of the second device. The controller decodes first code data from the second image pattern and utilizes the first algorithm data to perform arithmetic that uses the first identification information and a first variable value. The controller determines the second recording medium to be authentic if the decoded first code data matches an arithmetic result.