Relay Device for Medical Network Security
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Solution Overview
Problem
Existing medical device network systems lack robust network security measures to protect against external cyber attacks, particularly in ensuring confidentiality, authenticity, and integrity of communication data.
Innovation Solution
A physiological information processing system that includes a relay device capable of setting the network information of a first information processing device as its own, thereby enabling encrypted communication and enhancing network security by acting as a pseudo-encrypted communication intermediary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network security is strengthened through encryption for medical devices, then confidentiality and integrity of communication data are improved, but device complexity and difficulty of operation increase for devices that do not support encryption
Solution Approach 1:
The relay device serves as an intermediary between the first information processing device and the second information processing device. It performs encryption/decryption of communication packets and rewrites network information (MAC addresses) to enable secure communication without requiring the first device to have encryption capabilities. This mediator approach resolves the contradiction by centralizing security functions in the relay device while maintaining simplicity for the first device.
2Reliability
If encryption is implemented to prevent wiretapping, then confidentiality of communication data is improved, but ease of operation deteriorates due to additional configuration requirements
Solution Approach 1:
The relay device automatically performs encryption/decryption operations and network information rewriting without requiring manual configuration or user intervention. The device autonomously manages the security functions, extracting source and destination network information from packets and performing the necessary transformations. This self-service approach resolves the contradiction by eliminating the need for users to configure encryption settings while maintaining strong confidentiality.
3Reliability
If the relay device performs encryption and network information rewriting, then network security against external attacks is improved, but device complexity of the relay device increases
Solution Approach 1:
The relay device integrates multiple functions into a single unit: it performs encryption/decryption of communication packets, rewrites network information (MAC addresses), and manages communication between devices with different encryption capabilities. By consolidating these diverse functions in one multi-functional device, the system achieves strong network security without requiring multiple separate components, thus resolving the contradiction between security and complexity.
Data Source
AI summary
A physiological information processing system includes a first information processing device configured to process physiological information, a second information processing device, and a relay device configured to control network communication between the first information processing device and the second information processing device. The relay device includes a controller configured to set network information of the first information processing device as network information of the relay device.