Hearing Device Certificate for Secure Wireless Communication
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Solution Overview
Problem
Hearing devices face security challenges due to their limited computational power and memory, making them vulnerable to unauthorized data access, battery exhaustion, and other attacks, as they often use open standard-based wireless communication interfaces without robust security measures.
Innovation Solution
A hearing device with a processing unit, memory unit, and interface that includes a hearing device certificate containing a unique identifier and multiple keys, which is generated and transmitted to the device to ensure secure communication and integrity verification, preventing unauthorized access and attacks by authenticating only legitimate parties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hearing device uses open standard-based wireless communication interface, then ease of operation and compatibility are improved, but security and reliability deteriorate due to vulnerability to unauthorized access and attacks
Solution Approach 1:
The security system is segmented into multiple components: a certificate storage unit storing multiple certificates (including device identity certificate and fitting certificate), a verification unit that selectively verifies different certificates based on communication context, and a control unit that manages access rights. This segmentation allows the device to maintain open wireless communication while implementing layered security verification.
Solution Approach 2:
A certificate-based authentication system acts as an intermediary between the hearing device and external devices. Instead of direct trust establishment, the system uses certificates as intermediaries that verify identities and establish secure communication channels, allowing open standard compatibility while preventing unauthorized access.
2Reliability
If a hearing device implements robust security measures with multiple keys and certificates, then security and reliability are improved, but device complexity and memory requirements worsen
Solution Approach 1:
The certificate storage unit is designed to store multiple types of certificates (device identity certificate, fitting certificate, etc.) that serve different security functions. The verification unit universally applies verification logic across different certificate types, managing complexity through multi-functionality rather than separate dedicated structures for each certificate type.
Solution Approach 2:
The system changes the parameter of certificate verification by selecting different verification methods based on the certificate type and communication context. The verification unit can verify device identity certificate for basic authentication, fitting certificate for programming operations, and other certificates for specific functions, dynamically adjusting verification parameters to manage complexity.
3Reliability
If a hearing device verifies integrity of all received data, then reliability and security are improved, but processing time and energy consumption worsen
Solution Approach 1:
The verification unit implements partial verification by selectively verifying data integrity based on the type of data received and the communication context. Instead of verifying every single data packet with full cryptographic checks, the system applies verification at appropriate levels: certificate verification for connection establishment, selective data verification for critical commands, and lighter checks for routine operations, reducing overall processing time while maintaining reliability.
Data Source
AI summary
A hearing device includes: a processing unit configured to compensate for hearing loss of a user of the hearing device; a memory unit; and an interface; wherein the memory unit has a hearing device certificate stored therein, the hearing device certificate comprising: a hearing device identifier, a plurality of hearing device keys, at least one hearing device key identifier indicative of one of the hearing device keys.