Headset Audio Encryption for Biometric Authentication
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Solution Overview
Problem
Biometric authentication systems, particularly those using voice recognition, are vulnerable to malicious attacks where audio data can be intercepted and modified between a host device and a coupled accessory, such as a headset, leading to potential unauthorized access.
Innovation Solution
Implementing cryptographic protection at the headset device by encrypting or signing the audio data, which is then transmitted securely to the host device for verification and authentication, ensuring the integrity of the audio data and preventing malicious modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If audio data is transmitted from headset device to host device without cryptographic protection, then the system complexity is low and ease of operation is high, but the reliability is poor due to vulnerability to malicious attacks
Solution Approach 1:
The patent applies preliminary action by performing cryptographic protection (encryption or digital signing) on the audio data at the headset device before transmission to the host device. This advance protection ensures that the audio data is secured during transmission, preventing malicious attacks such as audio substitution or tampering. The cryptographic operations are executed in advance at the source device, so that when the data reaches the host device, its integrity and authenticity are already guaranteed, thus improving reliability without requiring complex verification systems at the host end.
2Reliability
If cryptographic protection is applied to audio data at the headset device, then the reliability and security are improved, but the processing time and energy consumption increase
Solution Approach 1:
The patent applies partial action by selectively applying cryptographic protection only to the audio data that requires authentication, rather than encrypting all audio streams continuously. The system performs cryptographic operations only when authentication is needed, and only on the specific audio packets that contain biometric information. This selective approach reduces the overall processing time and energy consumption while still maintaining the security and integrity of the authentication-critical audio data.
3Object-affected harmful factors
If cryptographic signing or encrypting is performed on audio data, then protection against malicious attacks is enhanced, but the device complexity and computational requirements increase
Solution Approach 1:
The patent extracts the cryptographic processing functions into a separate, dedicated module within the headset device. By taking out the cryptographic operations from the main audio processing pipeline and placing them in a specialized cryptographic module, the system achieves better security isolation and more efficient processing. This modular extraction allows the cryptographic functions to be optimized independently, reducing the overall device complexity while maintaining strong protection against malicious attacks. The separated module can be implemented as a secure element or trusted execution environment, further simplifying the integration with the rest of the audio system.
Data Source
AI summary
There is described a system and method for performing biometric authentication, preferably voice biometric authentication. The system has a host device such as a mobile phone and a coupled headset device. The headset device is arranged to receive audio, and to cryptographically protect the audio before transmission to the host device for verification and biometric authentication.