Currency Management With Distributed Transaction Integrity Checks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing currency management systems lack robust security measures to detect and recover from illegal changes in transaction, account, and currency information, particularly when such changes occur across multiple devices.
Innovation Solution
A currency management system comprising a transaction information management device, an account information management device, and a currency information management device, where transaction information is stored across all three, enabling detection and recovery of illegal changes by comparing data across devices, and utilizing electronic signatures to verify integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transaction information is stored only in one device, then device complexity is reduced, but security and reliability deteriorate due to inability to detect illegal changes
Solution Approach 1:
The system divides the storage of transaction information across multiple independent devices (first device, second device, third device). Each device stores a copy of the transaction information, enabling distributed redundancy. This segmentation allows the system to detect illegal changes by comparing information across devices while maintaining security without requiring a single complex centralized system.
Solution Approach 2:
Each device in the system maintains its own independent copy of transaction information with local storage capabilities. The local quality principle is applied by ensuring that each device can independently store, access, and verify transaction information, allowing for localized security measures and change detection without requiring all devices to be part of a complex interconnected system.
2Reliability
If transaction information is stored across multiple devices, then security and reliability improve through redundancy, but device complexity increases
Solution Approach 1:
The system performs preliminary storage of transaction information in multiple devices before any illegal changes occur. By pre-establishing redundant copies across the first device, second device, and third device, the system enables future detection of illegal changes through comparison. This preliminary action ensures that when changes occur, the system already has the baseline information needed for detection without requiring complex real-time monitoring infrastructure.
Solution Approach 2:
The system creates copies of transaction information in multiple devices (first device, second device, third device). Each device holds a replica of the transaction information, enabling the system to detect illegal changes by comparing the original with copies. This copying principle provides redundancy and detection capability while maintaining relatively simple individual device structures.
3Reliability
If electronic signatures are used to verify integrity, then security improves, but device complexity and processing requirements increase
Solution Approach 1:
The system employs electronic signatures that enable self-verification of integrity. Each device can independently verify the authenticity of transaction information using embedded electronic signatures without requiring complex external verification processes. The electronic signatures are self-contained within the stored information, allowing devices to autonomously detect illegal changes through simple comparison and verification operations.
Data Source
AI summary
A currency management system that excels in security and includes legal tender as a management target. A transaction information management device (TIMD) receives first transaction (Tr) information from a user terminal, and an account information management device receives second Tr information from the TIMD. The (TIMD) receives third Tr information from the account information management device, and a currency information management device receives fourth Tr information from the TIMD. The TIMD receives fifth Tr information from the currency information management device, and the TIMD sends sixth Tr information to a user terminal. The TIMD stores in the transaction information management device the first to sixth Tr information; and the account information management device and the currency information management device receive the first to sixth Tr information from the TIMD, and store the information in the account information management device and currency information management device respectively.