Standard No.:	GB/T 44778-2024
English Name:	Technical requirements and test methods for cybersecurity of vehicle diagnostic interfaces
Chinese Name:	汽车诊断接口信息安全技术要求及试验方法
Chinese Classification:	T40    Automobiles in general
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR; SAC
Issued on:	2024-10-26
Implemented on:	2024-10-26
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	12500 words
Translation Price(USD):	375.0
Delivery:	via email in 1 business day

GB/T 44778-2024 Technical requirements and test methods for cyber security of vehicle diagnostic interfaces English Anglais Englisch 1 Scope This document specifies the cybersecurity architecture and technical requirements for vehicle diagnostic interfaces, and describes the corresponding test methods. This document is applicable to vehicles of Category M and Category N. 2 Normative references No normative references are listed in this document. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 diagnostic access unit device, platform, or electronic control unit capable of initiating diagnostic services to a vehicle 3.2 diagnostic access authentication unit electronic control unit in the vehicle that processes or responds to diagnostic requests from the diagnostic access unit and determines whether the diagnostic access unit meets identity authentication or access control requirements 3.3 diagnostic connector connector used for communication between the vehicle and external diagnostic equipment, enabling short-term connection and hot-plugging Note: It includes the connector socket on the vehicle side and the connector plug on the external equipment side. [Source: GB/T34589-2017, 3.1, modified] 3.4 diagnosed controller electronic control unit that responds to diagnostic request messages sent by the diagnostic access unit and sends diagnostic response messages to the diagnostic access unit 3.5 diagnostic gateway electronic control unit that connects between the diagnostic network and diagnostic subnet to forward and transmit diagnostic request and response messages Note: The diagnostic gateway facilitates diagnostic message interaction between vehicle subnets through format conversion between different network protocols of master and slave nodes. 3.6 remote diagnosis controller electronic control unit capable of connecting and communicating with a diagnostic server 3.7 diagnostic interface interface that connects the diagnostic access unit and the diagnostic access authentication unit and provides diagnostic services between them 4 Diagnostic interface architecture 4.1 General architecture The vehicle diagnostic interface architecture is embodied by different forms of diagnostic networks, where the diagnostic access unit and diagnostic access authentication unit are important components of the vehicle diagnostic interface architecture. The general architecture of the vehicle diagnostic interface is shown in Figure 1. Figure 1 General architecture of vehicle diagnostic interface Examples of common vehicle diagnostic interface architectures are provided in Annex A. Based on the classification of different diagnostic network architectures, typical diagnostic network architectures include the following:it and sends diagnostic response messages to the diagnostic access unit

Contents Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Diagnostic interface architecture 5 Technical requirements 6 Test methods Annex A (Informative) Examples of common vehicle diagnostic interfaces architectures Bibliography