US 2026/0088974 A1 · ENCRYPTED COMMUNICATIONS USING A SHORT PULSE WIDTH MODULATION (PWM) CODE (SPC) PROTOCOL

Abstract

The described techniques address issues related to conventional SPC protocols, and provides AEAD without any additional overhead in the data transfer during normal operation. An additional encryption seed transfer stage is implemented as part of the initial setup mode between the primary device and each other secondary device (e.g. sensors) for which secured SPC communications are to be performed. The secondary devices may thereafter transmit encrypted sensor data, for example, using a variety of encryption techniques, which include sponge-based algorithms.

Claims29

Dependent claims

A device configured to communicate with a sensor using a pulse width modulation (PWM) code protocol, the device comprising:

communication circuitry configured to transmit, in accordance with the PWM code protocol, encrypted device seed data that includes at least a portion of a device seed that is encrypted, and to receive in response an encrypted sensor seed from the sensor in accordance with the PWM code protocol;
processing circuitry configured to decrypt the encrypted sensor seed to generate a sensor seed;
and
logic circuitry configured to generate a common seed based upon a combination of the device seed and the sensor seed,
wherein the processing circuitry is configured to decrypt encrypted sensor data received from the sensor in accordance with the PWM code protocol using the common seed to obtain sensor data measured by the sensor.

2 more elements

Dependencies are inferred from the claim text.

Encrypted communications using a short pulse width modulation (pwm) code (spc) protocol

Life of this patent

Encrypted communications using a short pulse width modulation (pwm) code (spc) protocol

Life of this patent

Abstract

Claims29