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System, device, and method for securing voice authentication and end-to-end speech interaction

  • US 9,577,784 B2
  • Filed: 08/13/2015
  • Issued: 02/21/2017
  • Est. Priority Date: 09/28/2012
  • Status: Active Grant
First Claim
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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;

    wherein access to the decrypted audio data requires access to the secure memory.

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