Tamper-Resistant Secure Area for Vehicle Communication
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Solution Overview
Problem
In-vehicle networks face challenges in securely communicating with external networks, as they are vulnerable to unauthorized access, such as hacking, which can disrupt communication and compromise security.
Innovation Solution
An extra-vehicular communication device with a tamper-resistant secure area stores communication destination and emergency operation information, allowing secure communication and processing even when unauthorized access is detected, ensuring reliable communication and data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If communication is enabled with external devices, then connectivity and functionality are improved, but vulnerability to unauthorized access and hacking increases
Solution Approach 1:
The storage unit is divided into a general area and a secure area with different access levels. The secure area contains critical communication destination information and emergency operation information that are protected from unauthorized access, while the general area remains accessible for normal operations. This segmentation allows the system to maintain communication functionality while protecting critical data from hacking.
Solution Approach 2:
The control unit acts as an intermediary that manages access to communication information. It selectively provides communication destination information to external devices based on authentication results, and can switch to using emergency operation information from the secure area when unauthorized access is detected. This intermediary control enables safe communication while preventing direct access to critical data.
2Speed
If critical communication information is stored in accessible memory, then communication speed is improved, but security against hacking deteriorates
Solution Approach 1:
The storage unit is segmented into accessible and secure areas. General communication information can be stored in the accessible area for fast retrieval, while critical communication destination information is stored in the secure area that requires authentication. This segmentation maintains communication speed for routine operations while securing critical data against hacking.
Solution Approach 2:
Different storage areas have different security qualities applied to them. The secure area implements strict access control and authentication mechanisms, while the general area maintains open access for speed. This local differentiation of security qualities allows the system to optimize both speed and security in different parts of the storage hierarchy.
Data Source
AI summary
An extra-vehicular communication device installed in a vehicle and capable of communicating with an external device outside the vehicle includes: a control unit; and a storage unit that has a tamper-resistant secure area and stores, in the secure area, at least one of communication destination information regarding a communication destination outside the vehicle and emergency operation information regarding a predetermined operation in an emergency. When unauthorized access in in-vehicle equipment installed in the vehicle is detected, the control unit performs at least one of control of communication with the communication destination by use of the communication destination information and processing based on the emergency operation information.