Vehicle device, ad hoc network and method for a road toll system
AssigneeKapsch TrafficCom AG
InventorOliver Nagy
Life of this patent
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Abstract
A vehicle device for a road toll system including: a satellite navigation receiver for continuously generating location data for a processing and transmitting/receiving unit of the vehicle device; and a trusted-element processor configured to log a time segment of the generated location data and to cryptographically signing said time segment. The trusted-element processor is further configured to start said logging upon detection of a predefined time or a predefined location of the vehicle device and to carry out said logging for a predefined time segment.
Claims13
A vehicle device for a road toll system comprising
- a satellite navigation receiver for continuously generating location data;
- and
- a trusted-element processor for receiving the generated location data, to log a time segment of the generated location data and to cryptographically sign said time segment,
- wherein the trusted-element processor starts said logging upon detection of a predefined time or a predefined location of the vehicle device and carries out said logging for a predefined time segment, and wherein the trusted-element processor detects the predefined location in external location data that it receives from proximate vehicle devices via a wireless network.
A method for logging location data of a location-recording vehicle device of a road toll system with several vehicle devices that can exchange location data in a wireless fashion, the method comprising the following steps performed in a first vehicle device:
- receiving location data of a second vehicle device;
- detecting a predefined location in the received location data of the second vehicle device;
- logging a time segment of the location data of the first vehicle device, upon detection of the predefined location;
- and
- signing the logged time segment with a cryptographic signature.
Dependencies are inferred from the claim text.