US Patent 9735970 Techniques for secure voice communication

A secured audio apparatus (SAA) for providing secured communications between a local device and a remote device and a method for authenticating a local secured audio apparatus (SAA) associated with a local device to a remote SAA associated with a remote device are presented. The SAA includes a processing unit; and a memory, the memory containing instructions that, when executed by the processing unit, configure the SAA to: receive a remote certificate fingerprint from a remote SAA of the remote device; obtain a verified certificate based on the remote certificate fingerprint; generate an ephemeral key based on the obtained certificate, wherein the ephemeral key is used to encrypt and decrypt communications between the local SAA and the remote SAA; and secure audio communications between the local device and the remote device based on the generated ephemeral key.