Electronic Control Key Backup Security via Inductive Distance Checks
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Solution Overview
Problem
Current electronic control keys with backup communication circuitry are vulnerable to attacks as they do not perform secure distance checks when the primary battery is dead, allowing unauthorized access by bypassing the secure distance threshold.
Innovation Solution
Incorporating an inductive system that enables backup communications and security checks, including battery status, distance measurement, motion detection, and button press verification to ensure authorized functions are only enabled when the key is within a secure distance and in the correct state, preventing unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If backup communication circuitry is provided for operation when the battery is dead, then the electronic control key can still perform authorized functions without battery power, but the system becomes vulnerable to attacks by bypassing secure distance checks
Solution Approach 1:
The system performs a battery status check before enabling backup communication mode. When the battery is determined to be in a good state, the system proactively enables distance measurement circuitry to perform secure distance checks, preventing the security vulnerability that would exist if backup mode were enabled without such checks.
Solution Approach 2:
The system continuously monitors battery status and uses this feedback to dynamically control the operation of distance measurement circuitry. When battery status indicates good condition, the feedback loop activates secure distance checking during backup mode, and disables it when battery is depleted, thus adapting security measures to available power resources.
2Reliability
If secure distance measurement is performed during battery-powered operation, then unauthorized access is prevented, but the backup communication circuitry cannot perform distance checks when the battery is dead
Solution Approach 1:
The system dynamically adjusts its operational mode based on battery status. When battery power is available, the system operates in normal mode with full security features. When battery is depleted, it transitions to backup mode with modified security checks, allowing the system to maintain security adaptability across different power conditions.
Solution Approach 2:
The system changes the operational parameters of the distance measurement circuitry based on battery status. When battery is good, distance measurement is performed with full precision and frequency. When battery is depleted, the system modifies the measurement parameters to reduce power consumption while maintaining essential security functionality.
3Ease of operation
If the inductive system enables backup communications without security checks, then unauthorized access is allowed, but adding security checks increases system complexity
Solution Approach 1:
The distance measurement circuitry serves multiple functions: it performs secure distance checks during normal battery-powered operation and continues to perform distance checks during backup mode when battery is depleted. This multi-functionality allows the same hardware to provide security across different operational modes without requiring separate dedicated security circuits for each mode.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances security by ensuring that authorized functions are only enabled when the electronic control key is within a predetermined threshold distance and in a valid operational state, effectively thwarting potential attacks by requiring a secure distance check and motion or button press verification.
Implementation Method 1
An inductive element may be provided on the electronic control key that inductively links with the access control system to establish an inductive power and communication link
Data Source
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AI summary
An electronic control key including security check circuitry used by an inductive system to perform at least one security check to determine whether to enable authorized functions. The inductive system receives power and enables communications via an inductive link for backup operation. The security check circuitry may include battery status circuitry and distance measurement circuitry. The inductive system invokes the distance measurement circuitry to perform a secure distance check when the battery status is good, in which the inductive system enables authorized functions only when the secure distance check passes. The security check circuitry may include a motion detector for performing a motion inquiry. The motion inquiry may include detecting motion of the electronic control key or detecting a predetermined characteristic movement or a programmed motion pattern. The security check circuitry may be a button in which authorized functions are enabled only when the button is pressed.