Synaptics Incorporated
SECURE AUDIO SYSTEMS AND METHODS

Abstract:

Systems and methods for securing audio content in an audio system include a first operating environment executing an audio application and facilitate communications with a server, and a trusted audio processing environment having audio input/output circuitry, a digital signal processor, a tamperproof memory storing a root key serving as a hardware root-of-trust, a key derivation component configured to derive an encryption key or decryption key from the root key and seeding information associated with a server and/or the audio application, an encryption component configured to encrypt the processed audio signal producing an encrypted audio output signal which is accessible to the first operating environment which may transmit the encrypted audio output signal to the server for further processing. A decryption component is configured to decrypt protected audio content received from the server.