SYSTEM, DEVICE, AND METHOD FOR SECURING VOICE AUTHENTICATION AND END-TO-END SPEECH INTERACTION

摘要

A method, device, and system for secure end-to-end audio recognition is disclosed. A client device launches an application that connects with a server. The client device and server exchange cryptographic keys and establish a secure connection and a shared cryptographic key. The server transmits an encrypted audio prompt to the client device. The client device decrypts the encrypted audio prompt and stores the decrypted audio prompt in secure memory inaccessible to the operating system using an audio engine of the client device. The audio engine then retrieves the audio and renders it for the user through the speakers of the client device. The client device captures the user's audio response with a microphone and stores the audio response in the secure memory. The stored audio response is encrypted and transmitted to the server.

主权项

1. A computing device for securely transferring audio, the computing device comprising:
a central processing unit; a system memory that is accessible by the central processing unit; a secure memory that is inaccessible by the central processing unit; a speaker to output audio based on received audio data; an audio co-processor to receive encrypted audio data from an application executed on the computing device; and a security co-processor to (i) decrypt the encrypted audio data and (ii) store the decrypted audio data in the secure memory; wherein the audio co-processor is further to retrieve the decrypted audio data from the secure memory and (ii) provide the decrypted audio data to the speaker for output.