US 2021/0240821 A1 · SENSING SYSTEM AND SENSING METHOD

Abstract

In a detection system (1) including a sensor (2) and a controller (3), an acquisition unit (2a) in the sensor (2) acquires sensor data, a calculation unit (2b) calculates, by using the sensor data, a MAC value from which non-tampering of the sensor data is verifiable, and a transmission unit (2d) transmits the sensor data to the controller (3) or transmits the MAC value to the controller (3) in place of the sensor data when the calculation unit (2b) has calculated the MAC value. In the controller (3), a reception unit (3a) receives the sensor data or the MAC value transmitted from the sensor (2), and when the reception unit (3a) has received the MAC value, a verification unit (3b) verifies the MAC value by using the sensor data last received by the reception unit (3a).

Claims5

Dependent claims

A detection system comprising a sensor and a controller, wherein the sensor includes

acquisition circuitry configured to acquire sensor data;
calculation circuitry configured to calculate tampering detection information from which non-tampering of the sensor data is verifiable, by using the sensor data;
and
a transmitter configured to transmit the sensor data to the controller or transmit the tampering detection information to the controller in place of the sensor data when the calculation circuitry has calculated the tampering detection information, and
the controller includes
a receiver configured to receive the sensor data or the tampering detection information transmitted from the sensor;
and
verification circuitry configured to verify the tampering detection information by using the sensor data last received by the receiver when the receiver has received the tampering detection information.

5 more elements

Dependencies are inferred from the claim text.

Sensing system and sensing method

Life of this patent

Sensing system and sensing method

Life of this patent

Abstract

Claims5