Vehicle security device and ID code management device
First Claim
1. A vehicle security device connected to a vehicle apparatus for communicating with a portable device, the security device comprising:
- a first communication means for performing a first coded communication to establish a first mutual authentication with the portable device;
an ID code management means connected to the first communication means, having a first code and a second code, and being incommunicable with the portable device, the ID code management means performing a second coded communication for establishing a second mutual authentication with the first communication means using the first code; and
a second communication means for performing a third coded communication to establish mutual authentication with the ID code management means using the second code, the second communication means enabling the operation of the vehicle apparatus when every one of the first, second, and third mutual authentications have been established.
1 Assignment
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Accused Products
Abstract
A vehicle security device for improving the security level of a vehicle. The vehicle security device is connected to an engine and communicates with a portable device. A smart ECU performs a first coded communication to establish mutual authentication with the portable device. An ID code box is connected to the smart ECU, has a first code and a second code, and does not communicate with the portable device. The ID code box performs a second coded communication using the first code to establish a second mutual authentication with the smart ECU. An engine ECU performs a third coded communication using the second code to establish a third mutual authentication with the ID code box. The engine ECU enables the engine to be started when every one of the first, second, and third mutual authentications are established.
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Citations
20 Claims
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1. A vehicle security device connected to a vehicle apparatus for communicating with a portable device, the security device comprising:
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a first communication means for performing a first coded communication to establish a first mutual authentication with the portable device; an ID code management means connected to the first communication means, having a first code and a second code, and being incommunicable with the portable device, the ID code management means performing a second coded communication for establishing a second mutual authentication with the first communication means using the first code; and a second communication means for performing a third coded communication to establish mutual authentication with the ID code management means using the second code, the second communication means enabling the operation of the vehicle apparatus when every one of the first, second, and third mutual authentications have been established. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A vehicle security device connected to a vehicle apparatus for communicating with a portable device having a portable device code, the security device comprising:
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a first electronic control unit, having a vehicle code and a first code, for receiving the portable device code from the portable device; an ID code box, connected to the first electronic control unit and having a first code and a second code, for exchanging the first codes with the first electronic control unit; and a second electronic control unit, having a second code, for exchanging the second codes with the ID code box, the second electronic control unit enabling the vehicle apparatus to operate when the portable device code matches the vehicle code, the first code of the first electronic control unit matches the first code of the ID code box, and the second code of the ID code box matches the second code of the second electronic control unit.
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20. An ID code management device for use in a vehicle security device connected to a vehicle apparatus, the vehicle security device comprising:
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a first communication means for performing a first coded communication to establish a first mutual authentication with a portable device, and a second communication means for disabling operation of the vehicle apparatus when the first mutual authentication is not established; the ID code management device managing a first code and a second code without communicating with the portable device, performing a second coded communication using the first code to establish a second mutual authentication with the first communication means, and performing a third coded communication using the second code to establish a third mutual authentication with the second communication means; and the vehicle security device disables the operation of the vehicle apparatus when the third mutual authentication is not established.
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Specification