Terminal Unique Information Transmission Method
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Solution Overview
Problem
Conventional methods for managing terminal unique information fail to prevent fraudulent use of stored data, as terminals can acquire and replay data without authorization, even if the original terminal is not broken, leading to potential misuse.
Innovation Solution
A transmission method that generates a terminal unique work key for encryption, where the server verifies the terminal's unique public key certificate against a discarded terminal information table, ensuring only authorized terminals receive the necessary information for data replay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If terminal unique information is managed by a server tied to a user, then data can be replayed on a new terminal when the original terminal is broken, but terminals capable of replaying stored data fraudulently increase
Solution Approach 1:
The system performs preliminary actions by binding terminal unique information to the terminal hardware before any data replay operations. When a terminal is broken, the server can verify the new terminal's unique information against the discarded terminal information table before allowing data replay, preventing fraudulent access while enabling legitimate recovery
Solution Approach 2:
The server acts as an intermediary between the terminal and stored data. It manages terminal unique information and controls data replay permissions by verifying whether the terminal's unique information exists in the discarded terminal information table, thus mediating between data accessibility and authorization control
2Ease of operation
If terminal unique information is transmitted without verification, then data access is convenient, but unauthorized terminals can acquire and misuse stored data
Solution Approach 1:
The system applies preliminary anti-action by maintaining a discarded terminal information table that contains unique information from terminals that should not access data. Before transmitting terminal unique information or allowing data access, the server checks whether the terminal's unique information exists in this discarded table, preventing unauthorized access in advance
Solution Approach 2:
The server implements feedback control by continuously monitoring terminal requests and verifying terminal unique information against the discarded terminal information table. When a terminal attempts to access data, the server provides feedback by either allowing or denying access based on the verification result, thus controlling unauthorized access
Data Source
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AI summary
A transmission method for terminal unique information used for generation of a terminal unique work key used for encryption of a scramble key used for encryption of data is provided. A server receives, from a terminal, a terminal unique information acquisition request including a terminal unique public key certificate of the terminal, refers to a discarded terminal information table in which encrypted terminal unique public key certificates of terminals not permitted to acquire the terminal unique information are described, checks whether an encrypted terminal unique public key certificate of the terminal is described in the discarded terminal information table, and transmits, when the encrypted terminal unique public key certificate is not described in the discarded terminal information table, the terminal unique information of the terminal to the terminal.