Digital Asset Transaction Verification via Dual-Device Segmentation
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Solution Overview
Problem
Digital asset transactions are vulnerable to tampering and cybercrime, as malicious actors can implant malware or manipulate transaction interfaces, leading to unauthorized asset transfers without user awareness.
Innovation Solution
A digital asset transaction method that verifies transaction content on two different devices, one connected to the Internet and another with restricted Internet access, using multiple check messages and authentication data to ensure transaction integrity and prevent tampering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If digital asset transactions are performed via Internet-connected devices, then transaction convenience and speed are improved, but vulnerability to tampering and cybercrime increases
Solution Approach 1:
The transaction verification process is segmented into multiple independent verification steps across different devices. The first device displays and receives confirmation for transaction details, while the second device independently verifies the same transaction content and provides authentication. This segmentation ensures that even if one device is compromised, the transaction cannot be executed without the second device's verification, thus resolving the contradiction between convenience and security.
Solution Approach 2:
The patent introduces an intermediary verification mechanism where a second device acts as a mediator between the user and the transaction execution. This intermediary device independently verifies transaction content and provides authentication data, preventing direct tampering between the Internet-connected device and the transaction system. The intermediary layer blocks harmful factors while maintaining transaction convenience.
2Reliability
If multiple verification steps are implemented across different devices, then transaction security is improved, but transaction process complexity increases
Solution Approach 1:
The second device is designed with multi-functionality, serving both as a verification device and an authentication source. It not only displays transaction content for verification but also generates and transmits authentication data (such as digital signatures or one-time passwords) back to the first device. This universal design reduces the need for separate authentication systems, thereby managing complexity while enhancing security.
Solution Approach 2:
The system implements a feedback mechanism where the second device's verification result directly influences the transaction execution. The authentication data from the second device is fed back to the first device to confirm whether the transaction should proceed. This structured feedback loop ensures security through multiple verifications while maintaining a manageable process through clear decision points.
3Object-affected harmful factors
If a closed device with restricted Internet access is used for verification, then resistance to remote tampering is improved, but device connectivity and usability are reduced
Solution Approach 1:
The closed device is designed with local quality characteristics, having restricted Internet access specifically for security purposes while maintaining full functionality for its core verification function. The device can still communicate with the first device via local connection (Bluetooth, NFC, or local network) to receive transaction data and transmit authentication data. This selective connectivity provides resistance to remote tampering while preserving necessary usability for the verification process.
Data Source
AI summary
A digital asset transaction method is implemented using a connected device connectable to the Internet and a closed device not connectable to the Internet and includes the following steps: the connected device displays a first check message according to a transaction data input thereto by a user; the connected device transmits the transaction data to the closed device after the user confirms the first check message matches the transaction data; the closed device displays a second check message according to the transaction data transmitted thereto by the connected device; the closed device transmits an authentication data to the connected device after the user confirms the second check message matches the transaction data; and the connected device executes the digital asset transaction after receiving the authentication data from the closed device. With the above method, the user can verify transaction content on different devices and decide whether to execute the transaction.