Vehicle Locking System Using Segmented Authentication
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Solution Overview
Problem
Existing key management systems for vehicles and facilities face challenges in securing authentication information, leading to potential leaks and misuse, resulting in vehicle theft or unauthorized access.
Innovation Solution
A locking and unlocking system that employs a portable terminal to send authentication information to a key unit, which stores and decrypts unique authentication information for the vehicle or facility, ensuring secure access and reducing theft by encrypting key information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If key information is managed integrally by a server, then user convenience is improved, but security is worsened due to potential large-scale leaks
Solution Approach 1:
The authentication system is segmented into multiple components: the server stores only encrypted authentication information, the portable terminal holds decryption keys, and the key unit contains verification logic. This segmentation prevents single-point failure and ensures that even if one component is compromised, the entire system remains secure while maintaining user convenience through distributed authentication.
Solution Approach 2:
The portable terminal acts as an intermediary between the server and the key unit. It receives encrypted authentication information from the server, decrypts it using stored keys, and transmits it to the key unit for verification. This intermediary role distributes trust and prevents direct exposure of sensitive data, resolving the contradiction between centralized management convenience and security risks.
2Reliability
If authentication information is stored in the key unit, then security is improved, but access control flexibility is worsened
Solution Approach 1:
The system dynamically manages authentication information by encrypting it in the key unit and controlling decryption through the portable terminal. This dynamic approach allows the system to maintain security (encrypted storage in key unit) while providing flexibility (controlled decryption and transmission to locking device), enabling adaptive access control based on user authentication and authorization.
Data Source
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AI summary
A locking and unlocking system (1) includes: a portable terminal (20); a key unit (12); and a locking and unlocking device (11) of a vehicle (10) or facilities. The portable terminal (20) includes a first sending unit sending first authentication information to the key unit (12). The key unit (12) includes: a first storage unit; a first authentication unit performing authentication based on the first authentication information; a decryption unit decrypting second authentication information when the authentication by the first authentication unit is successful; and a second sending unit sending the second authentication information to the locking and unlocking device (11). The locking and unlocking device (11) includes: a second authentication unit performing authentication based on the second authentication information; and a locking and unlocking unit locking or unlocking the vehicle (10) or the facilities when the authentication by the second authentication unit is successful.