Trusted Zone Data Word Visual Indicator for Secure Application Recognition
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Solution Overview
Problem
Existing data processing devices lack a secure method to visually or audibly indicate the operating state of secure applications running in a trustworthy area, making it difficult for users to distinguish between secure and insecure applications.
Innovation Solution
A data processing device and method that outputs a user-defined data word, which can be visual, audio-visual, or a combination of graphics and numbers, to indicate the execution of secure applications in the trustworthy area, allowing users to recognize the operating state and preventing manipulation by insecure applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If secure applications are executed in a trustworthy area without visual indication, then security is maintained, but users cannot recognize the operating state or distinguish secure from insecure applications
Solution Approach 1:
The patent uses visual indicators (color changes, graphical representations) to display the operating state of the device. When a secure application is executed in the trustworthy area, a specific visual indicator is shown to the user, allowing immediate recognition of the secure operating state without compromising security.
Solution Approach 2:
The patent introduces an intermediary visual indication layer between the secure application execution and user perception. This intermediary provides information about the operating state through displayed indicators while maintaining the security boundary, allowing users to recognize secure mode without exposing sensitive data or system internals.
2Difficulty of detecting and measuring
If visual indicators are displayed to show secure application execution, then user recognition is improved, but the device complexity increases
Solution Approach 1:
The visual indication mechanism serves multiple functions: it indicates secure operating state, provides user feedback, and maintains security context. By making the indication system multi-functional, the patent reduces the need for separate dedicated components for each function, thereby limiting the increase in device complexity.
3Ease of operation
If a data word is displayed to identify secure applications, then ease of operation is improved, but security risks increase if the data word is compromised
Solution Approach 1:
The system performs preliminary verification and establishes the secure context before displaying the data word indicator. The visual indication is only shown after confirming that a secure application is actually executing in the trustworthy area, preventing misleading indicators that could compromise security.
Solution Approach 2:
The patent implements a feedback mechanism where the visual indicator is dynamically updated based on the actual execution state. The indicator is shown only when a secure application is confirmed to be running and is hidden or changed when insecure applications execute, providing accurate real-time feedback without creating security vulnerabilities.
Data Source
Figure 1~2
AI summary
The invention describes a data processing device (1), which has a trusted zone area (2) and a non-trusted zone (3). For a secure application (5, 7), which is executed in the trusted zone (2), a data word (6, 8), which is established by a user of the device and stored in the device (1), can be output.