Authentication Apparatus Elapsed Time Verification
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Solution Overview
Problem
Existing authentication systems lack a reliable method to verify the authenticity of portable storage media by accurately determining the elapsed time of communication disruptions, which is crucial for secure identification processes.
Innovation Solution
An authentication apparatus with a detection unit, time counting unit, and determination unit that tracks and verifies the elapsed time of communication with a portable storage medium against predefined times to authenticate the medium, utilizing a program that includes a detection unit, time counting unit, and determination unit to ensure secure authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If communication with portable storage medium is continuously monitored, then authentication reliability is improved, but device complexity increases
Solution Approach 1:
The authentication process is divided into distinct phases: detection phase (monitoring communication availability), counting phase (measuring elapsed time during disruption), and determination phase (comparing measured time against predefined time). This segmentation allows each phase to be handled by dedicated units (detection unit, time counting unit, determination unit) with specific functions, reducing overall system complexity while maintaining continuous monitoring capability.
Solution Approach 2:
The system stores predefined time values in advance before authentication occurs. These predefined times represent expected communication durations under normal conditions. By preparing these reference values beforehand, the system can quickly compare measured elapsed times against them during authentication without requiring complex real-time analysis, thus improving reliability while keeping the determination logic simple.
2Reliability
If elapsed time of communication disruption is accurately tracked, then authentication security is improved, but measurement precision requirements increase
Solution Approach 1:
The time counting unit automatically starts counting when communication disruption is detected and stops when communication is restored, without requiring external intervention or complex configuration. The system self-manages the timing process by using its own detection unit to trigger the counting operation, eliminating the need for high-precision external timing devices or complex synchronization mechanisms while still achieving accurate elapsed time measurement.
Solution Approach 2:
The system changes the parameter being measured from continuous communication state to discrete elapsed time duration. By focusing measurement on the duration of disruption rather than continuous communication quality, the system achieves sufficient precision for authentication without requiring complex real-time communication parameter monitoring. The determination unit then compares this single elapsed time parameter against predefined thresholds to make authentication decisions.
Data Source
AI summary
An authentication apparatus includes a detection unit that detects whether or not communication with a portable storage medium storing identification information for identifying a user is able to be performed, a reading unit that reads identification information stored in the storage medium when the detection unit detects that the communication is able to be performed, a time counting unit that counts an elapsed time, a determination unit that determines whether or not the elapsed time counted by the time counting unit matches a predefined time for the identification information read by the reading unit, and an authentication unit that authenticates the storage medium with which the detection unit detects that the communication is able to he performed when the determination unit determines that the elapsed time counted by the time counting unit matches the predefined time.