Real-time frame authentication using ID anonymization in automotive networks

A vehicle network and data frame technology, applied in user identity/authority verification, in-vehicle communication, vehicle components, etc., can solve problems such as damage to performance, reduction, and resource limitations

Active Publication Date: 2016-07-06
RGT UNIV OF MICHIGAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of these are capable of dealing with denial-of-service (DoS) attacks on ECUs
Because ECUs are severely resource-constrained due to cost and size, requiring them to perform tasks more complex than simple calculations degrades / impairs their intended functionality and / or required performance

Method used

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  • Real-time frame authentication using ID anonymization in automotive networks
  • Real-time frame authentication using ID anonymization in automotive networks
  • Real-time frame authentication using ID anonymization in automotive networks

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Embodiment Construction

[0039] Example embodiments will now be described more fully with reference to the accompanying drawings.

[0040]figure 1 A layered architecture of a Controller Area Network (CAN) node with different layers of functions and ECU components is shown. The Electronic Control Unit (ECU) is the node that interconnects between CAN and other vehicle components such as sensors or mechanical components. Vehicles typically include 60 to 70 ECUs, and the cost-conscious automotive industry makes ECUs severely resource-constrained. For example, 8-bit microprocessors are used for lightweight functions such as turning lights on / off, while 32-bit microprocessors are used for more mission / safety critical functions such as engine control. Although CAN is specifically mentioned, it should be readily understood that the concepts described herein can be applied more generally to other types of vehicle networks, such as LIN or FlexRay.

[0041] CAN consists of four layers: Physical Layer 11 , Medi...

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Abstract

A real-time frame authentication protocol is presented for in-vehicle networks. A frame identifier is made anonymous to unauthorized entities but identifiable by the authorized entities. Anonymous identifiers are generated on a per-frame basis and embedded into each data frame transmitted by a sending ECU. Receiving ECUs use the anonymous identifiers to filter incoming data frames before verifying data integrity. Invalid data frame are filtered without requiring any additional run-time computations.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Invention Patent Application No. 14 / 494,141, filed September 23, 2014, and also claims the benefit of US Provisional Application No. 61 / 881,544, filed September 24, 2013. The entire disclosure of the above application is incorporated herein by reference. technical field [0003] This disclosure relates to real-time frame authentication using ID anonymization in automotive networks. Background technique [0004] Modern vehicles are equipped with a large number of electronic control units (ECUs) varying in processing power and functional complexity. They monitor and control critical vehicle components such as the engine and transmission (power train) as well as non-critical components such as airbags and telenetics. They are interconnected via several in-vehicle networks such as the Controller Area Network (CAN) which has become an industry standard due to its widespread deploymen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32H04L9/30
CPCH04L9/12H04L9/3271H04L2209/42H04L2209/84H04L63/0227H04L63/1441H04L67/12H04W12/10H04W4/40H04L63/0421H04L63/12H04W12/02H04W4/48H04L9/3242H04L9/0861H04W12/75
Inventor 韩圭奭斯瓦普纳·迪夫亚·波特卢里康格·G·申
Owner RGT UNIV OF MICHIGAN
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