Authenticated control sequences to initialize sensors over a multi-target interface bus

Abstract

A controller device includes a memory storing instructions. An interface bus is coupled to sensors and configured to operate with a multi-target interface protocol. A processor is coupled to the memory and the interface bus. The processor broadcasts initialization data, according to the multi-target interface protocol, to the sensors. The processor generates, from the initialization data, using at least one cryptographic function, an authentication tag for each sensor. Each authentication tag is specific to a corresponding sensor of the sensors. The processor also unicasts, according to the multi-target interface protocol, each authentication tag to the corresponding sensor of the sensors.