Out-of-vehicle device interface apparatus and method for protecting in-vehicle network

Patent metadata

Field	Value
Publication number	US-2016014105-A1
Application number	US-201514695100-A
Country	US
Kind code	A1
Filing date	Apr 24, 2015
Priority date	Jul 9, 2014
Publication date	Jan 14, 2016
Grant date	—

Abstract

An out-of-vehicle device interface apparatus includes a request message reception unit, a response message request unit, and a response message transmission unit. The request message reception unit receives a request message from an out-of-vehicle device, generates electrical signals in electric lines, and transfers the request message. The response message request unit requests response messages for the request message from one or more devices constituting an in-vehicle network based on one or more of the electric lines in which electrical signals have been generated. The response message transmission unit receives the response messages from the one or more devices, and transfers the response messages to the out-of-vehicle device via unidirectional communication.

First claim

What is claimed is:

1 . An out-of-vehicle device interface apparatus, comprising:
a request message reception unit configured to receive a request message from an out-of-vehicle device, to generate electrical signals in electric lines, and to transfer the request message; a response message request unit configured to request response messages for the request message from one or more devices constituting an in-vehicle network based on one or more of the electric lines in which electrical signals have been generated; and a response message transmission unit configured to receive the response messages from the one or more devices, and to transfer the response messages to the out-of-vehicle device via unidirectional communication.

2 . The out-of-vehicle device interface apparatus of claim 1 , wherein the response message request unit selects one or more request flags corresponding to one or more electric lines in which the electrical signals have been generated based on request flags set in the respective electric lines, and requests the response messages from the one or more devices based on the one or more request flags.

3 . The out-of-vehicle device interface apparatus of claim 2 , wherein the request message reception unit selects the one or more request flags corresponding to content of the request message by checking the content of the request message, and generates the electrical signals in the one or more of the electric lines that correspond to the one or more request flags.

4 . The out-of-vehicle device interface apparatus of claim 3 , wherein the electrical signals are generated when power is supplied to the electric lines.

5 . The out-of-vehicle device interface apparatus of claim 4 , wherein the unidirectional communication is performed using a method of transferring data only in a direction from the out-of-vehicle device interface apparatus to the out-of-vehicle device without including a communication line over which data is transferred from the out-of-vehicle device to the out-of-vehicle device interface apparatus.

6 . The out-of-vehicle device interface apparatus of claim 3 , wherein the request message reception unit comprises:
a device authentication unit configured to perform authentication on the out-of-vehicle device; and a request message checking unit configured to determine whether a response to the content of the request message can be made via the devices that constitute the in-vehicle network.

7 . The out-of-vehicle device interface apparatus of claim 6 , wherein the request message checking unit determines whether the response to the content of the request message can be made via the devices that constitute the in-vehicle network if the authentication of the out-of-vehicle device is successful.

8 . The out-of-vehicle device interface apparatus of claim 7 , wherein the request message checking unit sends a response impossibility message to the out-of-vehicle device if the response to the content of the request message cannot be made via the devices that constitute the in-vehicle network.

9 . A method of requesting a response message, comprising:
receiving a request message from an out-of-vehicle device; generating electrical signals in electric lines, and transferring the request message; and requesting response messages for the request message from one or more devices constituting an in-vehicle network based on one or more of the electric lines in which the electrical signals have been generated.

10 . The method of claim 9 , wherein:
requesting the response messages comprises selecting one or more request flags corresponding to one or more electric lines in which electrical signals have been generated based on request flags set in the respective electric lines; and the response messages are requested from the one or more devices based on the one or more request flags.

11 . The method of claim 10 , wherein:
transferring the request message comprises selecting the one or more request flags corresponding to content of the request message by checking content of the request message; and the electrical signals are generated in the one or more electric lines that correspond to the one or more request flags.

12 . The method of claim 11 , wherein the electrical signals are generated when power is supplied to the electric lines.

13 . The method of claim 11 , wherein receiving the request message comprises:
performing authentication on the out-of-vehicle device; and determining whether a response to the content of the request message can be made via the devices that constitute the in-vehicle network.

14 . The method of claim 13 , wherein determining whether the response to the content of the request message can be made comprises, if the authentication of the out-of-vehicle device is successful, determining whether the response to the content of the request message can be made.

15 . The method of claim 14 , wherein determining whether the response to the content of the request message can be made comprises, if the response to the content of the request message cannot be made via the devices that constitute the in-vehicle network, sending a response impossibility message to the out-of-vehicle device.

16 . A method of sending a response message, comprising:
receiving response messages from one or more devices that constitute an in-vehicle network; and sending the response messages to an out-of-vehicle device via unidirectional communication.

17 . The method of claim 16 , wherein the unidirectional communication is performed using a method of transferring data only in a direction from the out-of-vehicle device interface apparatus to the out-of-vehicle device without including a communication line over which data is transferred from the out-of-vehicle device to the out-of-vehicle device interface apparatus.

Assignees

• Korea Electronics Telecomm

Inventors

• Kim Kyoung-Ho
• Yun Jeong-Han
• Kim Heemin
• Chung Manhyun
• Kim Woonyon
• Seo Jungtaek
• Park Eung Ki

Classifications

• H04B3/56 Primary

  Circuits for coupling, blocking, or by-passing of signals · CPC title

• H04W12/12

  Detection or prevention of fraud · CPC title

• H04L63/1441

  Countermeasures against malicious traffic (countermeasures against attacks on cryptographic mechanisms H04L9/002) · CPC title

• H04L67/12

  specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks · CPC title

• H04W4/40

  for vehicles, e.g. vehicle-to-pedestrians [V2P] · CPC title