Mobile Maintenance Device Access Rights Management
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Solution Overview
Problem
Current mobile devices for appliance maintenance lack effective security measures to prevent personnel errors and ensure secure access management, leading to potential misidentification and unauthorized access.
Innovation Solution
A mobile maintenance device equipped with a processor and memory that receives identity data from appliances, compares it to a whitelist using hash functions, and performs maintenance only if the data matches authorized entries, ensuring secure and accurate access through cryptographic keys and secure communication interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mobile devices are used for appliance maintenance without access rights management, then ease of operation is improved, but security and reliability deteriorate due to potential personnel errors and unauthorized access
Solution Approach 1:
The system performs preliminary verification of maintenance personnel identity and appliance identity before allowing maintenance operations. The mobile device checks the personnel's credentials against stored access rights data and verifies the appliance identity using cryptographic keys, preventing unauthorized access before maintenance begins
Solution Approach 2:
The mobile device acts as an intermediary between maintenance personnel and appliances. It manages the authentication process by comparing personnel identity data with stored access rights, verifying appliance identities through cryptographic keys, and controlling the establishment of communication channels, thereby ensuring security while maintaining ease of operation
2Reliability
If access rights management with identity verification is implemented, then security and reliability are improved, but device complexity increases due to additional verification mechanisms
Solution Approach 1:
The system uses self-service mechanisms where the mobile device automatically verifies personnel credentials by comparing them against stored access rights data, and automatically verifies appliance identities using cryptographic keys. This automated self-verification reduces the need for manual security checks and complex centralized authentication systems
Solution Approach 2:
The system changes the verification parameter from simple physical presence or basic authentication to cryptographic verification using digital keys. The mobile device verifies appliance identity by comparing cryptographic keys, which provides high security without requiring complex hardware modifications to the appliances themselves
3Reliability
If cryptographic verification is used to verify appliance identity, then security is improved, but measurement precision requirements increase for accurate identity matching
Solution Approach 1:
The system uses cryptographic key pairs (public and private keys) where the public key is stored in the mobile device and the private key is stored in the appliance. This copying of key data allows verification without direct physical contact or complex real-time synchronization, maintaining security while reducing precision requirements for identity matching
Data Source
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AI summary
Mobile device with access rights management. A mobile maintenance device (1) comprising: a first communication interface (2) configured to receive from an appliance (7) identity data indicative of an identity of the appliance (7); a memory (15); a processor (6) communicatively coupled to the first communication interface (2), the processor (6) being configured to: receive identity data indicative of the identity of the appliance (7) from the first communication interface (2); read from the memory (15) a whitelist with a plurality of entries; produce a digital value as a function of the received identity data, the function of the received data being: an identity function or a hash function; compare the digital value to the plurality of entries of the whitelist; carry out maintenance on the appliance (7) if the digital value matches at least one entry of the plurality of entries of the whitelist.