Hardware Security Module for Offline Data Protection
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Solution Overview
Problem
Conventional device data protection methods are inadequate as they rely on user authentication and encryption, which can be bypassed, leaving sensitive data vulnerable to unauthorized access, especially when the device is stolen or compromised, and users may not have time to initiate data deletion measures.
Innovation Solution
A contextually triggered data protection system that includes a separate security module operating even when the device is powered off, using sensors to detect tampering and automatically execute data protection responses such as soft or hard deletion, alerting the user, or hiding data without user interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional user authentication and encryption mechanisms are used, then data protection is provided during normal operation, but the data becomes vulnerable when the device is stolen or the user is forced to give out the password
Solution Approach 1:
The system divides data protection into multiple layers: authentication-based protection for normal operation, and context-triggered automatic protection for theft scenarios. The security module is segmented from the main OS, operating independently to monitor for tampering and execute protection responses without user intervention.
Solution Approach 2:
The system performs preliminary actions by pre-configuring context triggers and protection responses. When theft context is detected (device off state, tampering sensors activated), the predetermined protection response is automatically executed without requiring user action at the moment of theft.
2Reliability
If the user manually deletes data upon anticipating theft, then data security is improved, but the user may not have sufficient time to respond
Solution Approach 1:
The security module operates autonomously to detect theft context and execute protection responses without user intervention. The system monitors device state and sensor inputs, automatically determining when protection is needed and executing the appropriate response, eliminating the need for user action during critical moments.
Solution Approach 2:
The system continuously monitors device state through sensors and context triggers, providing feedback about security conditions. When theft context is detected, this feedback automatically triggers the protection response, creating a closed-loop system that responds in real-time without user involvement.
3Use of energy by moving object
If the device is completely powered off to conserve energy, then energy efficiency is improved, but data protection capabilities are reduced
Solution Approach 1:
The system segments power consumption by maintaining the security module in a low-power monitoring state while the main OS is completely off. Only essential security functions consume minimal power, providing continuous protection capability without the full energy cost of running the entire device.
Solution Approach 2:
Different parts of the system have different power states: the main OS is completely powered off for maximum energy savings, while the security module maintains a minimal operational state sufficient for theft detection and protection execution, optimizing the balance between energy consumption and security capability.
Data Source
AI summary
Methods, systems, and computer program products are provided for protecting data stored on a device, even when the device is powered off. The device includes a first operating system and a security module. The first operating system (OS) is the main OS for the device, managing computer resources when the device is powered up in an “on” mode. The security module is separate from the main OS, and is configured to monitor for undesired tampering of the device. The security module is implemented in hardware that functions even when the device is turned off, and thus can protect data against unauthorized access even when the device is off. The security module may be implemented in the form of a circuit, a system-on-chip (SOC), a secondary OS that executes in a processor circuit separate from the processor hardware that operates the main OS, and/or in another manner.