Audio Signal Encryption Using Receiver Voiceprint
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Solution Overview
Problem
The existing methods for audio signal encryption and decryption using public and private keys are costly and do not guarantee confidentiality, especially in multi-party communication scenarios.
Innovation Solution
An electronic device method that detects sensitive information in audio signals and encrypts it using characteristic information of the receiver, such as voiceprint or biometric data, to reduce costs and enhance confidentiality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If public key and private key encryption algorithm is used for audio signal encryption, then information transmission confidentiality is improved, but communication cost increases significantly
Solution Approach 1:
The patent segments the audio signal into multiple parts: sensitive information that requires encryption and non-sensitive information that can be transmitted as-is. By encrypting only the sensitive portions rather than the entire audio signal, the system reduces computational cost while maintaining confidentiality where needed.
Solution Approach 2:
The patent uses characteristic information of the receiver (such as voiceprint or biometric data) as a template to generate encryption keys. Instead of using complex public-key infrastructure, the system creates encrypted audio signals by modulating with receiver-specific characteristics, allowing the receiver to decrypt using the same characteristic information.
2Reliability
If public key and private key encryption algorithm is used for audio signal encryption, then information transmission confidentiality is improved, but the method becomes costly in multi-party communication scenarios
Solution Approach 1:
The patent applies different encryption strategies to different parts of the communication system. Each receiver has their own characteristic information used for encryption, creating local encryption keys tailored to each receiver. This allows multi-party communication where each participant can encrypt for specific receivers without requiring complex multi-party key management.
Solution Approach 2:
The system uses the receiver's own characteristic information (voiceprint, biometric data) as the encryption key. This self-service approach eliminates the need for centralized key distribution or complex public-key infrastructure, reducing communication cost in multi-party scenarios while maintaining security.
3Reliability
If entire audio signal is encrypted using public key and private key method, then confidentiality is improved, but processing time and computational cost increase
Solution Approach 1:
The patent identifies and encrypts only the sensitive information portions of the audio signal rather than the entire signal. This segmentation approach reduces the amount of data requiring encryption processing, thereby decreasing processing time and computational resource consumption while maintaining confidentiality for critical information.
Solution Approach 2:
Instead of encrypting the complete audio signal (excessive action), the system applies encryption only to the necessary sensitive portions (partial action). This partial encryption approach achieves adequate security protection while significantly reducing processing time and computational overhead.
Data Source
AI summary
Provided is a method including: receiving an audio signal of a transmitter; detecting sensitive information in the audio signal based on content of the audio signal; encrypting the sensitive information by using characteristic information of a receiver; and transmitting the audio signal including the encrypted sensitive information.