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Information processing device and management device

An information processing device and a technology for information management, which are applied in the fields of information processing devices and management devices, and can solve the problems of synchronization deviation of counter values ​​used for communication, and the information processing device cannot correctly verify messages.

Active Publication Date: 2021-06-08
HITACHI ASTEMO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when applying message authentication that also takes measures against retransmission attacks into an in-vehicle system, for example, when an abnormality such as an unexpected reset occurs in an information processing device, the shared communication between information processing devices in a sending and receiving relationship Synchronization deviation with counter value
As a result, there is a problem that the information processing device cannot correctly verify the message to be received

Method used

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  • Information processing device and management device
  • Information processing device and management device
  • Information processing device and management device

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Experimental program
Comparison scheme
Effect test

no. 1 approach ―

[0029] Below, refer to Figure 1 to Figure 10 , the first embodiment of the information processing device will be described.

[0030] (structure)

[0031] figure 1 It is a figure which shows the structure of the information processing apparatus 1 in 1st Embodiment. The first information processing device 1A is connected to the second information processing device 1B and the third information processing device 1C via the communication bus 2 . However, the configurations of the first information processing device 1A, the second information processing device 1B, and the third information processing device 1C are the same. Hereinafter, when the first information processing device 1A, the second information processing device 1B, and the third information processing device 1C are not particularly distinguished, they are referred to as "information processing device 1". In addition, in figure 1 Although three information processing devices 1 are shown in the drawing, four or mor...

Deformed example 1

[0103] In the above-described embodiment, the abnormality detection unit 11A is provided in the information processing device 1 . However, the information processing device 1 may not have the abnormality detection unit 11A, and another device connected to the communication bus 2 may have the abnormality detection unit 11A. In this case, the abnormality monitoring unit 11 receives the abnormality code 1911 from the abnormality detecting unit 11A included in the other device.

Deformed example 2

[0105] The communication bus 2 may be a communication bus corresponding to communication protocols other than CAN such as IEEE802.3, MOST, and FlexRay. When the communication bus 2 corresponds to IEEE802.3, the communication ID may be a combination of a destination IP address and a source IP address, or may be information contained in a payload. For example, the communication ID described in this embodiment may be included in a specific area of ​​the payload of the IEEE802.3 packet, and the communication ID may be used. That is, the communication ID is not limited to the information stored in the header of the communication protocol.

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PUM

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Abstract

Provided is an information processing device for transmitting and receiving a message provided with an communication ID showing classification, comprising a storage unit that stores a communication counter for verifying recency of communication by each communication ID, a recency information management unit that updates the communication counter on the basis of a predetermined condition, an abnormality monitoring unit that specifies an area of influence by occurred abnormality, and a message generation unit that generates a synchronization request message containing an communication ID showing that the message is to request synchronization of the communication counter and a synchronization target identifier showing the area of influence specified by the abnormality monitoring unit.

Description

technical field [0001] The present invention relates to an information processing device and a management device. Background technique [0002] CAN (Controller Area Network) (registered trademark) is spreading as a typical standard protocol in an on-vehicle network of an automobile. In such an in-vehicle network, for example, there is a danger of connecting an unauthorized device to an interface directly connected to an in-vehicle network such as an OBD2 (On-Board-Diagnostics 2) port, and sending an unauthorized message to the in-vehicle network . There is no field indicating the sending source (source address) in CAN communication data, which is easy to impersonate, especially vulnerable to replay attacks. The so-called replay attack refers to an attack that eavesdrops on a message flowing on a communication path, obtains it in advance, and retransmits the obtained message to cause an illegal operation. [0003] Usually, against such a threat, it is effective to use a me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40
CPCH04L12/40097H04L7/0054H04L12/40104H04L63/1466H04L2012/40215
Inventor 森田伸义山崎裕纪井手口恒太
Owner HITACHI ASTEMO LTD