VERIFYING THE AUTHENTICITY OF A LIGHTING DEVICE
First Claim
Patent Images
1. A lighting device comprising:
- at least one light emitter;
a receiver arranged to receive a challenge via a first communication channel; and
a response transmitter arranged to generate a response to the challenge, and to transmit the response via a second communication channel by coding the light emitted by said at least one light emitter, wherein the response is based on at least a secret key, provided in advance in the lighting device, and the challenge.
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Abstract
The present invention relates to verification of the authenticity of a lighting device. There is provided a lighting device which is capable of emitting coded light. The lighting device has a challenge receiver, arranged to receive a challenge, and a response transmitter, arranged to generate and transmit a response to the challenge. The response is generated by means of the challenge and a secret key in combination. Furthermore, there is provided a corresponding verification device generating the challenge and providing it to the lighting device, and analyzing the response in order to check the authenticity of the lighting device.
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Citations
15 Claims
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1. A lighting device comprising:
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at least one light emitter; a receiver arranged to receive a challenge via a first communication channel; and a response transmitter arranged to generate a response to the challenge, and to transmit the response via a second communication channel by coding the light emitted by said at least one light emitter, wherein the response is based on at least a secret key, provided in advance in the lighting device, and the challenge. - View Dependent Claims (2, 3, 4, 5, 6, 10, 14)
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7. A verification device arranged to verify the authenticity of a lighting device, which is arranged to transmit information by coding its output light, comprising:
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a challenge generator arranged to generate a challenge for the lighting device; a challenge transmitter arranged to transmit the challenge to the lighting device via a first communication channel; a response receiver arranged to receive a response to the challenge from the lighting device via a second communication channel using light coding; and an authenticity verifier arranged to determine the authenticity of the lighting device by comparing the response with a reference, wherein the response is based on at least a secret key, provided in advance in the verification device, and the challenge. - View Dependent Claims (8, 9, 15)
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11. A method of verifying the authenticity of a lighting device, which is able to transmit information by coding its light output, comprising:
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generating a challenge with a verification device; providing the challenge to a lighting device via a first communication channel; receiving a response to the challenge at the verification device via a second communication channel involving said coding of the light output of the lighting device; and verifying the authenticity of the lighting device by comparing the response with a reference, wherein the response is based on a combination of a secret key, provided in advance in both the lighting device and the verification device, and the challenge. - View Dependent Claims (12, 13)
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Specification