VEHICLE NETWORK AUTHENTICATION SYSTEM, AND VEHICLE NETWORK AUTHENTICATION METHOD
First Claim
1. A vehicle network authentication system in which communication data is transmitted and received by use of a unit of communication specified based on a communications protocol of a vehicle network, the vehicle network authentication system comprising:
- a data dividing section that divides authentication data for authenticating a communication target;
a dummy data addition section that adds dummy data for a dummy representation of the divided authentication data, the dummy data being used as data to be transmitted to the vehicle network together with the authentication data; and
an authentication section that verifies the divided authentication data and the dummy data by use of a plurality of pieces of verification data for verifying the divided authentication data and gives authority according to an amount of authentication of the verified authentication data.
1 Assignment
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Accused Products
Abstract
Provided is a vehicle network authentication system such that processing by a vehicle control device can be smoothed while security of communication using dummy data is maintained. A vehicle control device as an authenticating entity is provided with an authentication unit that allocates authority in accordance with the amount of authentication of data for authentication transmitted from a vehicle control device as an authenticated entity. The vehicle control device includes an authentication data generation unit that generates the data for authentication, a data division unit that divides the generated data for authentication, and a dummy data addition unit that adds dummy data as data that is transmitted to a vehicle network together with the data for authentication.
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Citations
15 Claims
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1. A vehicle network authentication system in which communication data is transmitted and received by use of a unit of communication specified based on a communications protocol of a vehicle network, the vehicle network authentication system comprising:
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a data dividing section that divides authentication data for authenticating a communication target; a dummy data addition section that adds dummy data for a dummy representation of the divided authentication data, the dummy data being used as data to be transmitted to the vehicle network together with the authentication data; and an authentication section that verifies the divided authentication data and the dummy data by use of a plurality of pieces of verification data for verifying the divided authentication data and gives authority according to an amount of authentication of the verified authentication data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13)
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11. The vehicle network authentication system according to claim, wherein
when all the authentications of the divided authentication data are established, the authentication section combines pieces of authentication data in which authentication has been established together in specified order, and combines the pieces of verification data together in the specified order, and the authentication section performs final authentication with respect to a communication target based on whether the combined authentication data and the combined verification data coincide with each other.
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14. A vehicle network authentication method in which communication data is transmitted and received by use of a unit of communication specified based on a communications protocol of a vehicle network, the vehicle network authentication method comprising:
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dividing authentication data for authenticating a communication target; adding dummy data for a dummy representation of the divided authentication data, the dummy data being used as data to be transmitted to the vehicle network together with the authentication data; and discriminating between the divided authentication data and the dummy data and giving authority according to an amount of authentication of the discriminated authentication data. - View Dependent Claims (15)
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Specification