摘要:
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 (100) as an authenticating entity is provided with an authentication unit (130) that allocates authority in accordance with the amount of authentication of data for authentication transmitted from a vehicle control device (200) as an authenticated entity. The vehicle control device (200) includes an authentication data generation unit (210) that generates the data for authentication, a data division unit (220) that divides the generated data for authentication, and a dummy data addition unit (230) that adds dummy data as data that is transmitted to a vehicle network together with the data for authentication.
摘要:
A communication system that transmits and receives a message including an amount of data and an identifier determined for the contents of each data. The communication system includes a device that receives the message and includes an processor that processes data in the message, a detector that detects a vehicle situation, and an storage that stores attributes, wherein the storage stores an identification code, a situation code determined according to the vehicle situation, and an attribute determined corresponding to a combination of the identification code and the situation code as the attribute, and the processor acquires, based on a combination of the identification code corresponding to the identifier of the received message and the situation code corresponding to the vehicle situation detected by the detector, an attribute corresponding to the combination among the attributes stored in the storage, and processes data of the received message based on the acquired attribute.
摘要:
To provide a communication system and a communication method that are capable of determining with a simple configuration the validity of a message that is communicated with the communication system, a plurality of ECUs is connected in the communication system to a communication bus, allowing communication of messages. A communication interval, which is defined for each message being communicated, is set for each ECU. The ECU that transmits the message transmits the message on the basis of the defined communication interval. The ECU that receives the transmitted message detects the communication interval of the received message, and determines the validity of the received message on the basis of a comparison between the detected communication interval and the defined communication interval.
摘要:
On-vehicle control units (100A to 100D) include an attaching section (130) for attaching a message code used to check the validity of the transmission source of communication data, to the communication data. The on-vehicle control units (100A to 100D) also include an update section (120) for updating a key code and the message code every time communication of communication data has been completed. An authentication section (140) checks communication data and the transmission source thereof on the basis of the result of comparison between the random code obtained by restoring a message code and the random code owned by the on-vehicle control units (100A to 100D), which are authorized.
摘要:
This communication system ensures the security of a communication message with a low computational load. Communication units (10, 20) are capable of exchanging a communication message containing a check bit. The check bit is used to determine the reliability of the communication message. Communication unit (10), which transmits the communication message, is equipped with a storage position determination part (31). The storage position determination part determines one of multiple positions within the communication message where the check bit can be stored as a storage position (P1, P2, P3). The communication unit generates a communication message with the check bit stored at the storage position and transmits the communication message. Communication unit (20), which receives the communication message, is equipped with a storage position determination part (41). The storage position determination part determines the storage position of the check bit in the communication message in accordance with the manner the storage position was determined. The communication unit obtains the check bit on the basis of the determination result in order to determine the reliability of the communication message.
摘要:
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 (100) as an authenticating entity is provided with an authentication unit (130) that allocates authority in accordance with the amount of authentication of data for authentication transmitted from a vehicle control device (200) as an authenticated entity. The vehicle control device (200) includes an authentication data generation unit (210) that generates the data for authentication, a data division unit (220) that divides the generated data for authentication, and a dummy data addition unit (230) that adds dummy data as data that is transmitted to a vehicle network together with the data for authentication.
摘要:
On-vehicle control units (100A to 100D) include an attaching section (130) for attaching a message code used to check the validity of the transmission source of communication data, to the communication data. The on-vehicle control units (100A to 100D) also include an update section (120) for updating a key code and the message code every time communication of communication data has been completed. An authentication section (140) checks communication data and the transmission source thereof on the basis of the result of comparison between the random code obtained by restoring a message code and the random code owned by the on-vehicle control units (100A to 100D), which are authorized.
摘要:
A plurality of in-vehicle control apparatuses (100) and a DLC (200) connected to a vehicle network each include a frame monitoring unit (131). The frame monitoring units (131) detect simultaneous transmission of a plurality of communication data having a shared CAN ID by monitoring an error frame transmitted to the vehicle network. The plurality of in-vehicle control apparatuses (100) and the DLC (200) also each include a control determination unit (132) and a transmission/reception control unit (133) that execute adjustment processing to adjust the plurality of communication data having the shared CAN ID when simultaneous transmission of the communication data is detected.