Assurance Module for Secure User Interaction Verification
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Solution Overview
Problem
Enterprise systems face challenges in verifying user interactions, particularly in ensuring that users accept terms of use, due to the limited functionality of hardware security modules like Trusted Execution Environments (TEEs) which can only display text and lack the capability to verify certain user interactions.
Innovation Solution
The implementation of an assurance module that operates independently of applications and TEEs, responsible for verifying user interactions by presenting agreements in a user-friendly interface, receiving user input, and generating a confirmation file with a digital signature to ensure the integrity of the interaction, which can be integrated with TEEs for enhanced security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a Trusted Execution Environment (TEE) is used to verify user interactions, then security is improved, but functionality is limited because TEEs can only display text and cannot verify certain user interactions
Solution Approach 1:
The system divides the verification functionality into two separate components: a TEE that handles secure key storage and cryptographic operations, and an assurance module that handles user interface presentation and interaction verification. This segmentation allows each component to specialize in its strength while working together to achieve both security and functionality.
Solution Approach 2:
An assurance module is introduced as an intermediary component between the TEE and the application. This mediator translates application requests into TEE operations and presents information to users in a user-friendly manner while verifying interactions, thereby bridging the functionality gap of the TEE without compromising security.
2Reliability
If a TEE is used to store encryption keys and perform secure operations, then security is improved, but user interface capability deteriorates because TEEs have very limited capability and can typically only display text
Solution Approach 1:
The assurance module serves as an intermediary that handles all user interface interactions. It receives user inputs, presents them to the TEE for verification, and translates TEE responses into user-friendly formats. This allows the TEE to maintain its security-focused design while the assurance module provides comprehensive UI capabilities.
Solution Approach 2:
The system separates security-critical functions (key storage, cryptographic operations) handled by the TEE from user interface functions (displaying agreements, receiving user input, verifying interactions) handled by the assurance module. This segmentation allows each component to be optimized for its specific purpose.
3Reliability
If an assurance module is added to verify user interactions, then verification capability is improved, but device complexity increases
Solution Approach 1:
The assurance module is designed to work closely with the existing TEE infrastructure, merging security verification functions with the already-present secure element. Rather than creating entirely separate systems, the assurance module integrates with the TEE's existing key storage and cryptographic capabilities, reducing overall system complexity.
Solution Approach 2:
The assurance module is designed as a universal component that can handle various types of user interactions (clicks, taps, biometric verification) across different applications. By creating a multi-functional module rather than application-specific verification code, the overall system complexity is reduced through code reuse and standardized processes.
Data Source
AI summary
Systems and methods are included for creating an assured record of a user interaction. An application on a user device can receive an agreement. The agreement can include a specification with instructions for assuring the user interaction. The application can pass the agreement to an assured module installed in the application. The assured module can present the agreement to a user in an interface. The assured module can receive user input indicating acceptance or rejection of the agreement. The assured module can generate a confirmation file that confirms the user interaction. The assured module can sign the confirmation file with a digital signature that can be used by other entities to verify the authenticity of the confirmation file.