Hearing Device Session Key Encryption and Authentication
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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 access and attacks, such as battery exhaustion and spoofing, as they use open standard-based interfaces for wireless communication.
Innovation Solution
A hearing device with a processing unit that receives and encrypts session keys based on a hearing device key, providing secure access control by filtering out unauthorized communication and verifying the integrity of session data using message authentication codes or digital signatures, thus protecting against attacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If open standard-based wireless communication interface is used in hearing device, then ease of operation and communication capability are improved, but security and vulnerability to unauthorized access deteriorate
Solution Approach 1:
The patent implements preliminary security actions by establishing encryption keys and authentication mechanisms before actual communication occurs. The hearing device generates and stores encryption keys in advance, and performs authentication handshakes before allowing data transmission, thereby preventing unauthorized access while maintaining open communication standards
Solution Approach 2:
The patent introduces encryption algorithms and authentication protocols as intermediary layers between the open communication interface and the hearing device's internal systems. These intermediaries translate open standard communications into secure, authenticated data streams, allowing the device to benefit from open standards while maintaining security
2Reliability
If advanced security algorithms and protocols are implemented in hearing device, then security is improved, but device complexity and computational requirements worsen
Solution Approach 1:
The patent segments security functions into distinct modular components: key generation module, encryption module, authentication module, and data protection module. Each module handles a specific security task independently, reducing overall system complexity while providing comprehensive security coverage
Solution Approach 2:
The patent employs parameter changes by selecting encryption algorithms and key lengths optimized for the hearing device's specific computational constraints. The system dynamically adjusts security parameters based on available processing power and memory, achieving adequate security without overwhelming the device's limited resources
3Reliability
If encryption and authentication processes are performed for every communication session, then security is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic authentication and key refresh operations rather than continuous encryption for all communications. Authentication is performed at session initiation and at predetermined intervals, allowing normal data transmission to proceed with minimal processing overhead while maintaining security
Solution Approach 2:
The patent performs authentication and key establishment in advance during session initiation, before actual data transmission begins. Once authenticated, the hearing device can communicate more efficiently using pre-established security parameters, reducing power consumption during the main communication phase
Data Source
AI summary
A hearing device includes: a processing unit configured to compensate for hearing loss of a user of the hearing device; and an interface; wherein the processing unit is configured to: receive a session request for a session via the interface, obtain and store a session key, encrypt the session key based on a hearing device key, send a session response comprising the encrypted session key, and receive session data in the session via the interface.