Baseband Antitheft Module for Mobile Terminal OS Integrity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing antitheft security software on mobile terminals becomes ineffective when uninstalled or removed through ROM flashing, preventing owners from sending notifications or performing positioning operations after a SIM card change, thus compromising the security and retrievability of stolen devices.
Innovation Solution
Implementing an antitheft module on the baseband processor that monitors the integrity of the operating system and generates SMS messages to alert users of tampering, allowing remote server connections for message notifications and positioning, even if the security software is uninstalled or the OS is altered, using user identity credentials and integrity verification methods like hash calculation or signature verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If security software is installed on the mobile terminal, then antitheft protection is improved, but the software can be removed through ROM flashing making it ineffective
Solution Approach 1:
The patent divides the antitheft functionality into two independent parts: security software running on the application processor and an antitheft module running on the baseband processor. This segmentation ensures that even if the security software is removed through ROM flashing, the antitheft module on the baseband processor remains intact and functional, continuing to provide protection by detecting OS integrity changes and sending alerts.
Solution Approach 2:
The baseband processor acts as an intermediary between the operating system and the external notification system. The antitheft module on the baseband processor monitors the OS running on the application processor and can independently generate and send SMS alerts when tampering is detected, bypassing the need for security software on the application processor level.
2Adaptability or versatility
If the operating system is modified or erased for system upgrade, then system functionality is improved, but antitheft security software is removed compromising security
Solution Approach 1:
By separating security functions into the baseband processor's antitheft module, the system allows OS updates on the application processor without affecting the core antitheft functionality. The baseband processor independently verifies OS integrity and maintains security capabilities regardless of OS modifications.
Solution Approach 2:
The antitheft module on the baseband processor performs preliminary integrity verification of the operating system before and during upgrade processes. This allows the system to detect unauthorized modifications and trigger security alerts while permitting legitimate system upgrades to proceed.
3Measurement precision
If security software monitors OS integrity, then tampering detection is improved, but the monitoring fails when software is uninstalled
Solution Approach 1:
The baseband processor serves as an intermediary monitoring layer that independently verifies OS integrity through the antitheft module. This intermediary can detect tampering attempts even when the primary security software on the application processor is removed, maintaining continuous monitoring capability through a separate execution path.
Solution Approach 2:
The antitheft module on the baseband processor continuously monitors OS integrity and provides feedback by sending SMS alerts when changes are detected. This feedback mechanism operates independently of the security software on the application processor, ensuring continuous monitoring and notification capability.
Data Source
AI summary
In an antitheft method for a mobile terminal that relates to the field of communications technologies, a baseband processor detects integrity of an operating system running on an application processor, generates a short message service (SMS) message when the operating system has no integrity, and transfers the SMS message to the application processor. The application processor controls a display to display the SMS message in order to inform a user that the operating system of the mobile terminal is damaged. In a scenario in which a mobile terminal is stolen and an operating system is maliciously tampered with, according to the solution provided in this application, an SMS message is used to prompt a user, thereby improving security of the mobile terminal.