CN115107701A - Automobile anti-theft authentication method and system - Google Patents

Automobile anti-theft authentication method and system Download PDF

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CN115107701A
CN115107701A CN202210884660.5A CN202210884660A CN115107701A CN 115107701 A CN115107701 A CN 115107701A CN 202210884660 A CN202210884660 A CN 202210884660A CN 115107701 A CN115107701 A CN 115107701A
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authentication
key
pin code
message
vehicle
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CN115107701B (en
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段志平
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Hozon New Energy Automobile Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/20Means to switch the anti-theft system on or off
    • B60R25/24Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
    • B60R25/241Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user whereby access privileges are related to the identifiers

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Abstract

本发明提供了一种汽车防盗认证方法及系统。其中应用于整车控制器VCU的汽车防盗认证方法包括:每隔一段时间向无钥匙进入及启动系统PEPS发送认证请求消息,认证请求消息包括加密的第一汽车PIN码;接收PEPS反馈的认证响应消息,并通过第一密钥对认证响应消息进行解密,认证响应消息包括加密的第二汽车PIN码;判断解密出的第二汽车PIN码与第一汽车PIN码是否匹配,如果是,则认证成功,否则,认证失败。本发明通过包括加密的第一汽车PIN码的认证请求消息和包括加密的第二汽车PIN码的认证响应消息进行双向认证,认证流程简单且安全可靠。

Figure 202210884660

The invention provides an automobile anti-theft authentication method and system. The car anti-theft authentication method applied to the vehicle controller VCU includes: sending an authentication request message to the keyless entry and start system PEPS at regular intervals, the authentication request message including the encrypted first car PIN code; receiving an authentication response fed back by the PEPS message, and decrypt the authentication response message through the first key, the authentication response message includes the encrypted second car PIN code; judge whether the decrypted second car PIN code matches the first car PIN code, if so, then authenticate Success, otherwise, authentication fails. The present invention performs bidirectional authentication through the authentication request message including the encrypted first car PIN code and the authentication response message including the encrypted second car PIN code, and the authentication process is simple, safe and reliable.

Figure 202210884660

Description

汽车防盗认证方法及系统Automobile anti-theft authentication method and system

技术领域technical field

本发明主要涉及汽车技术领域,尤其涉及一种汽车防盗认证方法及系统。The invention mainly relates to the technical field of automobiles, and in particular, to a method and system for automobile anti-theft authentication.

背景技术Background technique

汽车防盗系统是为防止汽车本身或者车内物品被盗所设定的系统。目前按结构可分为:机械式、电子式、芯片式和网络式4种类型,目前主要采用电子式,并逐步向网络式过渡。机械式很难抵挡住大剪刀、钢锯等重型工具的盗窃,电子式可以通过解码遥控器发出的无线电波或红外线来开启汽车的防盗系统。网络式防盗的缺点是价格昂贵,每月还要缴纳一定的服务费。The car anti-theft system is a system set up to prevent the car itself or the items in the car from being stolen. At present, according to the structure, it can be divided into 4 types: mechanical type, electronic type, chip type and network type. At present, electronic type is mainly used, and it is gradually transitioning to network type. The mechanical type is difficult to resist theft of heavy tools such as large scissors and hacksaws. The electronic type can activate the car's anti-theft system by decoding the radio waves or infrared rays emitted by the remote control. The disadvantage of network anti-theft is that it is expensive and has to pay a certain service fee every month.

因此,亟需一种安全性能高且成本低的芯片式汽车防盗认证方法及系统。Therefore, there is an urgent need for a chip-based anti-theft authentication method and system for automobiles with high security performance and low cost.

发明内容SUMMARY OF THE INVENTION

本发明要解决的技术问题是提供一种芯片式汽车防盗认证方法及系统,解决现有汽车防盗系统安全性能低的问题。The technical problem to be solved by the present invention is to provide a chip type automobile anti-theft authentication method and system to solve the problem of low safety performance of the existing automobile anti-theft system.

为解决上述技术问题,本发明提供了一种汽车防盗认证方法,应用于整车控制器VCU,包括:每隔一段时间向无钥匙进入及启动系统PEPS发送所述认证请求消息,所述认证请求消息包括加密的第一汽车PIN码;接收所述PEPS反馈的认证响应消息,并通过第一密钥对所述认证响应消息进行解密,所述认证响应消息包括加密的第二汽车PIN码;判断解密出的第二汽车PIN码与第一汽车PIN码是否匹配,如果是,则认证成功,否则,认证失败。In order to solve the above technical problems, the present invention provides a vehicle anti-theft authentication method, which is applied to the vehicle controller VCU, including: sending the authentication request message to the keyless entry and start system PEPS at regular intervals, the authentication request The message includes the encrypted first car PIN code; the authentication response message fed back by the PEPS is received, and the authentication response message is decrypted by the first key, and the authentication response message includes the encrypted second car PIN code; judgment Whether the decrypted second car PIN code matches the first car PIN code, if so, the authentication succeeds; otherwise, the authentication fails.

可选地,所述加密的第一汽车PIN码是通过第一密钥对所述第一汽车PIN码加密生成的,其中所述第一密钥和所述第一汽车PIN码都是经过学习的。Optionally, the encrypted first car PIN code is generated by encrypting the first car PIN code with a first key, wherein both the first key and the first car PIN code are learned of.

可选地,方法还包括判断所述第一密钥和所述第一汽车PIN码是否经过学习,如果否,则认证失败。Optionally, the method further includes judging whether the first key and the first car PIN code have been learned, and if not, the authentication fails.

可选地,如果所述第一密钥未经过学习,则进入第一密钥学习流程。Optionally, if the first key has not been learned, enter the first key learning process.

可选地,所述第一密钥学习流程的步骤包括:接收所述PEPS发送的密钥学习消息,并通过默认密钥对所述密钥学习消息进行解密,所述密钥学习消息包括加密的第二密钥;对解密出的第二密钥进行校验,如果校验通过,则将所述第二密钥预存在存储单元中作为经过学习的所述第一密钥。Optionally, the steps of the first key learning process include: receiving a key learning message sent by the PEPS, and decrypting the key learning message by using a default key, where the key learning message includes encrypted The decrypted second key is verified; if the verification is passed, the second key is pre-stored in the storage unit as the learned first key.

可选地,所述第一密钥学习流程的步骤还包括向所述PEPS发送密钥学习结果消息,所述密钥学习结果消息包括应答码。Optionally, the step of the first key learning process further includes sending a key learning result message to the PEPS, where the key learning result message includes a response code.

可选地,如果所述第一汽车PIN码未经过学习,则进入第一汽车PIN码学习流程。Optionally, if the first car PIN code has not been learned, enter the first car PIN code learning process.

可选地,所述第一汽车PIN码学习流程的步骤包括:接收所述PEPS发送的PIN码学习消息,并通过默认密钥对所述PIN码学习消息进行解密,所述PIN码学习消息包括加密的第二汽车PIN码;对解密出的第二汽车PIN码进行校验,如果校验通过,则将所述第二汽车PIN码预存在存储单元中作为经过学习的第一汽车PIN码。Optionally, the steps of the first automobile PIN code learning process include: receiving a PIN code learning message sent by the PEPS, and decrypting the PIN code learning message by using a default key, and the PIN code learning message includes: The encrypted second car PIN code; the decrypted second car PIN code is verified, and if the verification is passed, the second car PIN code is pre-stored in the storage unit as the learned first car PIN code.

可选地,所述第一汽车PIN码学习流程的步骤还包括向所述PEPS发送PIN码学习结果消息,所述PIN码学习结果消息包括应答码。Optionally, the step of the first vehicle PIN code learning process further includes sending a PIN code learning result message to the PEPS, where the PIN code learning result message includes a response code.

可选地,方法还包括:接收所述PEPS发送的防盗复位消息,并通过默认密钥对所述防盗复位消息进行解密,所述防盗复位消息包括加密的第二汽车PIN码;判断解密出的所述第二汽车PIN码与所述第一汽车PIN码是否匹配,如果是,则将所述第一汽车PIN码的值和所述第一密钥的值设置为第一值。Optionally, the method further includes: receiving an anti-theft reset message sent by the PEPS, and decrypting the anti-theft reset message by using a default key, where the anti-theft reset message includes the encrypted second automobile PIN code; Whether the second car PIN code matches the first car PIN code, and if so, set the value of the first car PIN code and the value of the first key to the first value.

可选地,方法还包括向所述PEPS发送复位结果消息,所述复位结果消息包括应答码。Optionally, the method further includes sending a reset result message to the PEPS, where the reset result message includes a response code.

可选地,方法还包括判断是否在阈值时间内接收到所述认证响应消息,如果否,则认证失败。Optionally, the method further includes judging whether the authentication response message is received within a threshold time, and if not, the authentication fails.

为解决上述技术问题,本发明提供了一种汽车防盗认证方法,应用于无钥匙进入及启动系统PEPS,方法包括:接收整车控制器VCU发送的认证请求消息,并通过自身预存的第二密钥对所述认证请求消息进行解密,所述认证请求消息包括加密的第一汽车PIN码;判断解密出的第一汽车PIN码与自身预存的第二汽车PIN码是否匹配,如果是,则根据所述第二密钥、所述第二汽车PIN码和第二随机数生成认证响应消息,如果否,将第二值作为所述认证响应消息;发送所述认证响应消息给所述VCU,所述认证响应消息用于判定是否认证成功。In order to solve the above technical problems, the present invention provides a vehicle anti-theft authentication method, which is applied to the keyless entry and start system PEPS. key to decrypt the authentication request message, which includes the encrypted first car PIN code; determine whether the decrypted first car PIN code matches the second car PIN code pre-stored by itself, if so, according to The second key, the second car PIN code and the second random number generate an authentication response message, if not, use the second value as the authentication response message; send the authentication response message to the VCU, all The authentication response message is used to determine whether the authentication is successful.

可选地,方法还包括:每隔一段时间向所述VCU发送密钥学习消息,所述密钥学习消息包括加密的所述第二密钥;判断是否在时间阈值内接收到所述VCU发送的密钥学习结果消息,如果否,则本次密钥学习失败。Optionally, the method further includes: sending a key learning message to the VCU at regular intervals, the key learning message including the encrypted second key; judging whether the VCU is received within a time threshold The key learning result message, if not, the key learning failed this time.

可选地,方法还包括:每隔一段时间向所述VCU发送PIN码学习消息,所述PIN码学习消息包括所述加密的所述第二汽车PIN码;判断是否在时间阈值内接收到所述VCU发送的PIN码学习结果消息,如果否,则本次PIN码学习失败。Optionally, the method further includes: sending a PIN code learning message to the VCU at regular intervals, where the PIN code learning message includes the encrypted second vehicle PIN code; The PIN code learning result message sent by the above VCU, if not, the PIN code learning failed this time.

可选地,方法还包括:每隔一段时间向所述VCU发送防盗复位消息,所述防盗复位消息包括加密的所述第二汽车PIN码;判断是否在时间阈值内接收到所述VCU发送的复位反馈消息,如果否,则本次复位失败。Optionally, the method further includes: sending an anti-theft reset message to the VCU at regular intervals, the anti-theft reset message including the encrypted second automobile PIN code; Reset the feedback message, if not, this reset fails.

为解决上述技术问题,本发明提供了一种汽车防盗认证系统,系统包括:整车控制器VCU,用于每隔一段时间向无钥匙进入及启动系统PEPS发送所述认证请求消息,所述认证请求消息包括加密的第一汽车PIN码,以及接收所述PEPS反馈的认证响应消息,根据所述认证响应消息判断是否认证成功;无钥匙进入及启动系统PEPS,用于接收整车控制器VCU发送的认证请求消息,并通过自身预存的第二密钥对所述认证请求消息进行解密,判断解密出的所述第一汽车PIN码与自身预存的第二汽车PIN码是否匹配,根据匹配结果发送所述认证响应消息给所述VCU,所述认证响应消息包括加密的所述第二汽车PIN码。In order to solve the above technical problems, the present invention provides a vehicle anti-theft authentication system, the system includes: a vehicle controller VCU, used for sending the authentication request message to the keyless entry and start system PEPS at regular intervals, the authentication The request message includes the encrypted first car PIN code and the authentication response message fed back by the PEPS, and judges whether the authentication is successful according to the authentication response message; the keyless entry and start system PEPS is used to receive the transmission from the vehicle controller VCU. and decrypt the authentication request message through its own pre-stored second key, determine whether the decrypted first car PIN code matches its own pre-stored second car PIN code, and send it according to the matching result. The authentication response message is sent to the VCU, and the authentication response message includes the encrypted second vehicle PIN code.

可选地,根据匹配结果发送所述认证响应消息给所述VCU的步骤包括:如果匹配成功,则根据所述第二密钥、所述第二汽车PIN码和第二随机数生成认证响应消息;如果匹配不成功,将第二值作为所述认证响应消息。Optionally, the step of sending the authentication response message to the VCU according to the matching result includes: if the matching is successful, generating an authentication response message according to the second key, the second car PIN code and the second random number. ; If the match is unsuccessful, use the second value as the authentication response message.

可选地,所述加密的第一汽车PIN码是通过第一密钥对第一汽车PIN码加密生成的,其中所述第一密钥和所述第一汽车PIN码都是经过学习的。Optionally, the encrypted first car PIN code is generated by encrypting the first car PIN code with a first key, wherein both the first key and the first car PIN code are learned.

可选地,根据所述认证响应消息判断是否认证成功的步骤包括:通过所述第一密钥对所述认证响应消息进行解密;判断解密出的所述第二汽车PIN码与所述第一汽车PIN码是否匹配,如果是,则认证成功,否则,认证失败。Optionally, the step of judging whether the authentication is successful according to the authentication response message includes: decrypting the authentication response message by using the first key; Whether the car PIN code matches, if yes, the authentication is successful, otherwise, the authentication fails.

与现有技术相比,本发明具有以下优点:Compared with the prior art, the present invention has the following advantages:

本发明的汽车防盗认证方法通过包括加密的第一汽车PIN码的认证请求消息和包括加密的第二汽车PIN码的认证响应消息进行双向认证,认证流程简单且安全可靠;VCU的第一密钥和第一汽车PIN码均具有自学习功能,能在产线方便、高效的完成该功能的出厂配置;VCU同时也具备防盗认证复位功能,方便售后的重新配置。The automobile anti-theft authentication method of the present invention performs two-way authentication through the authentication request message including the encrypted first car PIN code and the authentication response message including the encrypted second car PIN code, and the authentication process is simple, safe and reliable; the first key of the VCU Both the PIN code of the first car and the first auto have a self-learning function, which can conveniently and efficiently complete the factory configuration of this function on the production line; the VCU also has the anti-theft authentication reset function, which is convenient for after-sales reconfiguration.

附图说明Description of drawings

包括附图是为提供对本申请进一步的理解,它们被收录并构成本申请的一部分,附图示出了本申请的实施例,并与本说明书一起起到解释本发明原理的作用。附图中:The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the principles of the invention. In the attached picture:

图1是根据本发明一实施例的整车控制器VCU状态转换图;1 is a state transition diagram of a vehicle controller VCU according to an embodiment of the present invention;

图2是根据本发明一实施例的汽车防盗认证方法的流程图;Fig. 2 is a flow chart of a vehicle anti-theft authentication method according to an embodiment of the present invention;

图3是图2优化实施例的汽车防盗认证方法的流程图;Fig. 3 is the flow chart of the automobile anti-theft authentication method of the optimized embodiment of Fig. 2;

图4是根据本发明一实施例的认证请求消息的结构示意图;4 is a schematic structural diagram of an authentication request message according to an embodiment of the present invention;

图5是根据本发明一实施例的认证响应消息的结构示意图;5 is a schematic structural diagram of an authentication response message according to an embodiment of the present invention;

图6是根据本发明一实施例的第一密钥学习流程的流程图;6 is a flowchart of a first key learning process according to an embodiment of the present invention;

图7是根据本发明一实施例的密钥学习消息的结构示意图;7 is a schematic structural diagram of a key learning message according to an embodiment of the present invention;

图8是根据本发明一实施例的密钥学习结果消息的结构示意图;8 is a schematic structural diagram of a key learning result message according to an embodiment of the present invention;

图9根据本发明一实施例的第一汽车PIN码的学习流程的流程图;9 is a flowchart of a learning process of a first automobile PIN code according to an embodiment of the present invention;

图10是根据本发明一实施例的PIN码学习消息的结构示意图;10 is a schematic structural diagram of a PIN code learning message according to an embodiment of the present invention;

图11是根据本发明一实施例的PIN码学习结果消息的结构示意图;11 is a schematic structural diagram of a PIN code learning result message according to an embodiment of the present invention;

图12是根据本发明一实施例的第一密钥和第一汽车PIN码的复位流程的流程图;12 is a flowchart of a reset process of the first key and the first automobile PIN code according to an embodiment of the present invention;

图13是根据本发明一实施例的防盗复位消息的结构示意图;13 is a schematic structural diagram of an anti-theft reset message according to an embodiment of the present invention;

图14是根据本发明一实施例的复位结果消息的结构示意;14 is a schematic structural diagram of a reset result message according to an embodiment of the present invention;

图15是根据本发明另一实施例的汽车防盗认证方法的流程图;15 is a flow chart of a method for anti-theft authentication of a vehicle according to another embodiment of the present invention;

图16是根据本发明一实施例的汽车防盗认证系统的系统框图。FIG. 16 is a system block diagram of a vehicle anti-theft authentication system according to an embodiment of the present invention.

具体实施方式Detailed ways

为了更清楚地说明本申请的实施例的技术方案,下面将对实施例描述中所需要使用的附图作简单的介绍。显而易见地,下面描述中的附图仅仅是本申请的一些示例或实施例,对于本领域的普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图将本申请应用于其他类似情景。除非从语言环境中显而易见或另做说明,图中相同标号代表相同结构或操作。In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings that are used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application. For those of ordinary skill in the art, without any creative effort, the present application can also be applied to the present application according to these drawings. other similar situations. Unless obvious from the locale or otherwise specified, the same reference numbers in the figures represent the same structure or operation.

如本申请和权利要求书中所示,除非上下文明确提示例外情形,“一”、“一个”、“一种”和/或“该”等词并非特指单数,也可包括复数。一般说来,术语“包括”与“包含”仅提示包括已明确标识的步骤和元素,而这些步骤和元素不构成一个排它性的罗列,方法或者设备也可能包含其他的步骤或元素。As shown in this application and in the claims, unless the context clearly dictates otherwise, the words "a", "an", "an" and/or "the" are not intended to be specific in the singular and may include the plural. Generally speaking, the terms "comprising" and "comprising" only imply that the clearly identified steps and elements are included, and these steps and elements do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

除非另外具体说明,否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本申请的范围。同时,应当明白,为了便于描述,附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论,但在适当情况下,所述技术、方法和设备应当被视为授权说明书的一部分。在这里示出和讨论的所有示例中,任何具体值应被解释为仅仅是示例性的,而不是作为限制。因此,示例性实施例的其它示例可以具有不同的值。应注意到:相似的标号和字母在下面的附图中表示类似项,因此,一旦某一项在一个附图中被定义,则在随后的附图中不需要对其进行进一步讨论。The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that, for the convenience of description, the dimensions of various parts shown in the accompanying drawings are not drawn in an actual proportional relationship. Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the authorized description. In all examples shown and discussed herein, any specific value should be construed as illustrative only and not as limiting. Accordingly, other examples of exemplary embodiments may have different values. It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further discussion in subsequent figures.

在本申请的描述中,需要理解的是,方位词如“前、后、上、下、左、右”、“横向、竖向、垂直、水平”和“顶、底”等所指示的方位或位置关系通常是基于附图所示的方位或位置关系,仅是为了便于描述本申请和简化描述,在未作相反说明的情况下,这些方位词并不指示和暗示所指的装置或元件必须具有特定的方位或者以特定的方位构造和操作,因此不能理解为对本申请保护范围的限制;方位词“内、外”是指相对于各部件本身的轮廓的内外。In the description of this application, it should be understood that the orientations indicated by the orientation words such as "front, rear, top, bottom, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. Or the positional relationship is usually based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and these orientations do not indicate or imply the indicated device or element unless otherwise stated. It must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be construed as a limitation on the protection scope of the application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

为了便于描述,在这里可以使用空间相对术语,如“在……之上”、“在……上方”、“在……上表面”、“上面的”等,用来描述如在图中所示的一个器件或特征与其他器件或特征的空间位置关系。应当理解的是,空间相对术语旨在包含除了器件在图中所描述的方位之外的在使用或操作中的不同方位。例如,如果附图中的器件被倒置,则描述为“在其他器件或构造上方”或“在其他器件或构造之上”的器件之后将被定位为“在其他器件或构造下方”或“在其他器件或构造之下”。因而,示例性术语“在……上方”可以包括“在……上方”和“在……下方”两种方位。该器件也可以其他不同方式定位(旋转90度或处于其他方位),并且对这里所使用的空间相对描述作出相应解释。For ease of description, spatially relative terms, such as "on", "over", "on the surface", "above", etc., may be used herein to describe what is shown in the figures. The spatial positional relationship of one device or feature shown to other devices or features. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or features would then be oriented "below" or "over" the other devices or features under other devices or constructions". Thus, the exemplary term "above" can encompass both an orientation of "above" and "below." The device may also be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

此外,需要说明的是,使用“第一”、“第二”等词语来限定零部件,仅仅是为了便于对相应零部件进行区别,如没有另行声明,上述词语并没有特殊含义,因此不能理解为对本申请保护范围的限制。此外,尽管本申请中所使用的术语是从公知公用的术语中选择的,但是本申请说明书中所提及的一些术语可能是申请人按他或她的判断来选择的,其详细含义在本文的描述的相关部分中说明。此外,要求不仅仅通过所使用的实际术语,而是还要通过每个术语所蕴含的意义来理解本申请。In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood to limit the scope of protection of this application. In addition, although the terms used in this application are selected from well-known and common terms, some terms mentioned in the specification of this application may be chosen by the applicant at his or her judgment, and the detailed meanings of which are set forth herein. described in the relevant section of the description. Furthermore, it is required that the application be understood not only by the actual terms used, but also by the meaning implied by each term.

本申请中使用了流程图用来说明根据本申请的实施例的系统所执行的操作。应当理解的是,前面或下面操作不一定按照顺序来精确地执行。相反,可以按照倒序或同时处理各种步骤。同时,或将其他操作添加到这些过程中,或从这些过程移除某一步或数步操作。Flow diagrams are used in this application to illustrate operations performed by a system according to an embodiment of the application. It should be understood that the preceding or following operations are not necessarily performed in exact order. Rather, the various steps may be processed in reverse order or concurrently. At the same time, other actions are either added to these processes, or a step or steps are removed from these processes.

整车控制器(Vehicle Control Unit,VCU),也称为整车控制单元,是实现整车控制决策的核心电子控制单元,现被广泛应用于纯电动车和混合动力汽车。整车控制器VCU可以与无钥匙进入及启动系统(Passive Entry Passive Start,PEPS)相互认证,实现汽车防盗认证方法。图1是根据本发明一实施例的整车控制器VCU状态转换图。如图1所示,车辆控制器VCU有两种状态:设防状态11和解防状态12。VCU在上电初始化完成的默认状态为设防状态11。当VCU与PEPS之间认证不成功时,VCU依旧处于设防状态11;若VCU与PEPS之间通讯认证成功时,VCU由设防状态11转换为解防状态12。VCU只有在解防状态12时,才能允许系统启动。Vehicle Control Unit (VCU), also known as vehicle control unit, is the core electronic control unit that realizes vehicle control decisions, and is now widely used in pure electric vehicles and hybrid vehicles. The vehicle controller VCU can be mutually authenticated with the keyless entry and start system (Passive Entry Passive Start, PEPS) to realize the vehicle anti-theft authentication method. FIG. 1 is a state transition diagram of a vehicle controller VCU according to an embodiment of the present invention. As shown in FIG. 1 , the vehicle controller VCU has two states: the armed state 11 and the disarmed state 12 . The default state of the VCU after power-on initialization is completed is the armed state 11. When the authentication between the VCU and the PEPS is unsuccessful, the VCU is still in the defense state 11; if the communication authentication between the VCU and the PEPS is successful, the VCU transitions from the defense state 11 to the disarm state 12. The VCU can only allow the system to start when it is in disarmed state 12.

图2是根据本发明一实施例的汽车防盗认证方法200的流程图,图3是图2优化实施例的汽车防盗认证方法300的流程图。汽车防盗认证方法200和汽车防盗认证方法300都应用于整车控制器VCU。如图2所示,汽车防盗认证方法200包括如下步骤:FIG. 2 is a flow chart of a method 200 for car theft prevention authentication according to an embodiment of the present invention, and FIG. 3 is a flow chart of the method 300 for car theft prevention authentication according to the optimized embodiment of FIG. 2 . Both the vehicle anti-theft authentication method 200 and the vehicle anti-theft authentication method 300 are applied to the vehicle controller VCU. As shown in FIG. 2 , the method 200 for vehicle anti-theft authentication includes the following steps:

步骤S210:每隔一段时间向无钥匙进入及启动系统PEPS发送认证请求消息,认证请求消息包括加密的第一汽车PIN码;Step S210: Send an authentication request message to the keyless entry and start system PEPS at regular intervals, where the authentication request message includes the encrypted first car PIN code;

步骤S220:接收PEPS反馈的认证响应消息,并通过第一密钥对认证响应消息进行解密,认证响应消息包括加密的第二汽车PIN码;Step S220: Receive the authentication response message fed back by the PEPS, and decrypt the authentication response message by using the first key, and the authentication response message includes the encrypted second car PIN code;

步骤S230:判断解密出的第二汽车PIN码与第一汽车PIN码是否匹配,如果是,则认证成功,否则,认证失败。Step S230: Determine whether the decrypted second car PIN code matches the first car PIN code, if so, the authentication succeeds, otherwise, the authentication fails.

在一些优选实施例中,如图3所示,在步骤S210之前,还包括步骤S205:判断第一密钥和第一汽车PIN码是否经过学习。如果判断结果为是则进入步骤S210,否则判断认证失败。另外,在步骤S220之前,还包括步骤S215:判断是否在阈值时间内接收到认证响应消息,如果是则进入步骤S220,否则认证失败。In some preferred embodiments, as shown in FIG. 3 , before step S210 , it further includes step S205 : judging whether the first key and the first car PIN code have been learned. If the judgment result is yes, then go to step S210, otherwise, it is judged that the authentication fails. In addition, before step S220, it also includes step S215: judging whether the authentication response message is received within the threshold time, if yes, enter step S220, otherwise the authentication fails.

以下结合图2和图3对步骤S205~S230进行详细说明。Steps S205 to S230 will be described in detail below with reference to FIG. 2 and FIG. 3 .

在S205中,,判断第一密钥和第一汽车PIN码是否经过学习。整车控制器VCU在出厂时存储单元中存有默认的第一密钥和第一汽车PIN码。VCU初始化配置完成后,判断VCU是否是默认的第一密钥和第一汽车PIN码,若是默认值,表示未经过学习,第一密钥和第一汽车PIN码需要进入学习流程,此次认证失败;若经过学习,则转入步骤S220。其中,经过学习后的第一密钥与PEPS预存的第二密钥一致,经过学习后的第一汽车PIN码与PEPS预存的第二汽车PIN码一致。In S205, it is determined whether the first key and the first car PIN code have been learned. The vehicle controller VCU stores the default first key and the first vehicle PIN code in the storage unit when it leaves the factory. After the initial configuration of the VCU is completed, determine whether the VCU is the default first key and the first car PIN code. If it is the default value, it means that it has not been learned. The first key and the first car PIN code need to enter the learning process. Failed; if after learning, go to step S220. The learned first key is consistent with the second key pre-stored in the PEPS, and the learned first car PIN code is consistent with the second car PIN code pre-stored in the PEPS.

在步骤S210中,VCU生成第一随机数,然后用经过学习的第一密钥和加密算法对经过学习的第一汽车PIN码进行加密,生成加密的第一汽车PIN码,然后根据第一随机数和加密的第一汽车PIN码生成认证请求消息。其中加密算法可以为对称加密算法,也可以为非对称加密算法,本申请对加密算法的类型不作限制。在一些实施例中,加密算法优选为高级加密标准(Advanced Encryption Standard,AES)。图4是根据本发明一实施例的认证请求消息400的结构示意图。如图4所示,认证请求消息400包括名称、发送方、接收方、ID和数据域。其中数据域包括第一随机数和加密的第一汽车PIN码。第一随机数的长度可以为4个字节(Bytes),加密的第一汽车PIN码也为4个字节。In step S210, the VCU generates a first random number, and then encrypts the learned first car PIN code with the learned first key and an encryption algorithm to generate an encrypted first car PIN code, and then according to the first random number Number and encrypted first car PIN code to generate authentication request message. The encryption algorithm may be a symmetric encryption algorithm or an asymmetric encryption algorithm, and the type of the encryption algorithm is not limited in this application. In some embodiments, the encryption algorithm is preferably Advanced Encryption Standard (AES). FIG. 4 is a schematic structural diagram of an authentication request message 400 according to an embodiment of the present invention. As shown in FIG. 4, the authentication request message 400 includes name, sender, receiver, ID, and data fields. The data field includes the first random number and the encrypted first car PIN code. The length of the first random number may be 4 bytes (Bytes), and the encrypted first car PIN code is also 4 bytes.

在步骤S210中每隔一段时间向无钥匙进入及启动系统PEPS发送认证请求消息,例如VCU每隔100ms向PEPS发送相同的认证请求消息。VCU向PEPS发送认证请求消息的时间间隔可以按需设置,本申请对此不作限制。In step S210, an authentication request message is sent to the keyless entry and start system PEPS at intervals, for example, the VCU sends the same authentication request message to the PEPS every 100ms. The time interval for the VCU to send the authentication request message to the PEPS may be set as required, which is not limited in this application.

在S215中,判断是否在阈值时间内接收到认证响应消息,如果否,则认证失败。阈值时间可以按需设置,本申请对此不作限制。例如,判断是否在2秒内接收到认证响应消息,如果否,则认证失败,如果是,则转入步骤S220。In S215, it is determined whether the authentication response message is received within the threshold time, and if not, the authentication fails. The threshold time can be set as required, which is not limited in this application. For example, it is judged whether the authentication response message is received within 2 seconds, if not, the authentication fails, and if so, the process goes to step S220.

步骤S220中,认证响应消息可以由第二随机数、PEPS预存的第二密钥和第二汽车PIN码生成。具体地,PEPS生成第二随机数,然后通过第二密钥和加密算法对第二汽车PIN码进行加密,生成加密的第二汽车PIN码,然后根据第二随机数和加密的第二汽车PIN码生成认证响应消息。其中PEPS采用的加密算法与VCU采用的加密算法相同。图5是根据本发明一实施例的认证响应消息500的结构示意图。如图5所示,认证响应消息500包括名称、发送方、接收方、ID和数据域。其中数据域包括第二随机数和加密的第二汽车PIN码。第二随机数的长度可以为4个字节(Bytes),加密的第二汽车PIN码也为4个字节。VCU接收PEPS反馈的认证响应消息,由于经过学习的第一密钥与第二密钥一致,则VCU可以通过第一密钥对认证响应消息进行解密。In step S220, the authentication response message may be generated from the second random number, the second key pre-stored in the PEPS, and the second car PIN code. Specifically, the PEPS generates a second random number, then encrypts the second car PIN code by using the second key and an encryption algorithm to generate an encrypted second car PIN code, and then encrypts the second car PIN code according to the second random number and the encrypted second car PIN code to generate an authentication response message. The encryption algorithm adopted by PEPS is the same as the encryption algorithm adopted by VCU. FIG. 5 is a schematic structural diagram of an authentication response message 500 according to an embodiment of the present invention. As shown in FIG. 5, the authentication response message 500 includes name, sender, receiver, ID, and data fields. The data field includes the second random number and the encrypted second car PIN code. The length of the second random number may be 4 bytes (Bytes), and the encrypted second car PIN code is also 4 bytes. The VCU receives the authentication response message fed back by the PEPS, and since the learned first key is consistent with the second key, the VCU can decrypt the authentication response message by using the first key.

在一些实施例中,认证响应消息还可以由第二值生成,第二值可以按照约定设置。例如可以设置第二值为8字节的全0xFF。VCU接收认证响应消息后,在对认证响应消息进行解密之前,还包括步骤:先判断认证响应消息是否为设定值,如果是,则直接判断认证失败,如果否,则对认证响应消息进行解密。In some embodiments, the authentication response message may also be generated from a second value, and the second value may be set according to a convention. For example, the second value can be set to be all 0xFF of 8 bytes. After the VCU receives the authentication response message, before decrypting the authentication response message, it further includes the steps of: firstly judging whether the authentication response message is a set value, if so, directly judging that the authentication fails, and if not, decrypting the authentication response message .

在步骤S230中,判断解密出的第二汽车PIN码与第一汽车PIN码是否匹配,如果是,则认证成功,否则,认证失败。In step S230, it is judged whether the decrypted second car PIN code matches the first car PIN code, if so, the authentication is successful, otherwise, the authentication fails.

在一些实施例中,如果判断出第一密钥未经过学习,则进入第一密钥学习流程。VCU需要支持学习功能,当VCU是全新状态(默认的第一密钥或第一汽车PIN码)时,VCU可以通过学习功能更新第一密钥和第一汽车PIN码。图6是根据本发明一实施例的第一密钥学习流程600的流程图。如图6所示,第一密钥学习过程600的步骤包括:In some embodiments, if it is determined that the first key has not been learned, the first key learning process is entered. The VCU needs to support the learning function. When the VCU is in a new state (the default first key or the first car PIN code), the VCU can update the first key and the first car PIN code through the learning function. FIG. 6 is a flowchart of a first key learning process 600 according to an embodiment of the present invention. As shown in Figure 6, the steps of the first key learning process 600 include:

步骤S610:接收PEPS发送的密钥学习消息,并通过默认密钥对密钥学习消息进行解密,密钥学习消息包括加密的第二密钥。VCU和PEPS的存储单元中都默认存储有相同的默认密钥。默认密钥只在出厂前可用,也就是说,第一密钥的学习过程只能在出厂前完成。汽车出厂后,默认密钥对普通用户不可见,只有拥有超级权限的用户(如售后工程师)才能获得默认密钥。图7是根据本发明一实施例的密钥学习消息700的结构示意图。如图7所示,密钥学习消息700包括名称、发送方、接收方、ID和数据域。其中数据域包括加密的第二密钥,加密的第二密钥的长度为8个字节。Step S610: Receive the key learning message sent by the PEPS, and decrypt the key learning message by using the default key, where the key learning message includes the encrypted second key. The storage units of the VCU and the PEPS both store the same default key by default. The default key is only available before leaving the factory, that is, the learning process of the first key can only be completed before leaving the factory. After the car leaves the factory, the default key is invisible to ordinary users, and only users with super privileges (such as after-sales engineers) can obtain the default key. FIG. 7 is a schematic structural diagram of a key learning message 700 according to an embodiment of the present invention. As shown in FIG. 7, the key learning message 700 includes name, sender, receiver, ID, and data fields. The data field includes the encrypted second key, and the length of the encrypted second key is 8 bytes.

步骤S620:对解密出的第二密钥进行校验,校验的方法可以是CRC16、CRC32,本申请对校验的方法不作限制。判断校验是否通过,如果校验失败,则结束密钥学习过程。如果校验通过,则转入步骤S630。Step S620: Verify the decrypted second key. The verification method may be CRC16 or CRC32, and the application does not limit the verification method. It is judged whether the verification is passed, and if the verification fails, the key learning process is ended. If the verification is passed, go to step S630.

步骤S630:判断第一密钥的值是否为第一值,如果否,则不作操作,结束学习过程。如果是,则转入步骤S640。第一值可以为0xFF。例如判断第一密钥的值是否为0xFF,如果第一密钥的值为0xFF表示第一密钥已经经过学习,不需要进行操作。Step S630: Determine whether the value of the first key is the first value, and if not, no operation is performed, and the learning process is ended. If yes, go to step S640. The first value may be 0xFF. For example, it is determined whether the value of the first key is 0xFF, and if the value of the first key is 0xFF, it means that the first key has been learned and no operation is required.

步骤S640:将第二密钥预存在存储单元中作为经过学习的第一密钥。具体地,将第二密钥的值替换VCU的存储单元中第一密钥的值,经过学习后,第一密钥与第二密钥一致。Step S640: Pre-store the second key in the storage unit as the learned first key. Specifically, the value of the second key is replaced with the value of the first key in the storage unit of the VCU, and after learning, the first key is consistent with the second key.

在一些实施例中,第一密钥的学习过程还包括向PEPS发送密钥学习结果消息,密钥学习结果消息包括应答码。其中,应答码表示密钥学习的结果。图8是根据本发明一实施例的密钥学习结果消息800的结构示意图。如图8所示,密钥学习结果消息800包括名称、发送方、接收方、ID和数据域。其中数据域包括应答码和填充数据。应答码的长度为1个字节,填充数据的长度为7个字节。其中应答码的定义可以如表1所示:In some embodiments, the learning process of the first key further includes sending a key learning result message to the PEPS, where the key learning result message includes a response code. Among them, the response code represents the result of key learning. FIG. 8 is a schematic structural diagram of a key learning result message 800 according to an embodiment of the present invention. As shown in FIG. 8, the key learning result message 800 includes name, sender, receiver, ID, and data fields. The data field includes the response code and padding data. The length of the response code is 1 byte, and the length of the padding data is 7 bytes. The definition of the response code can be shown in Table 1:

表1Table 1

应答码answer code 描述describe 0000 VCU成功执行VCU executes successfully 2020 请求不支持request not supported 21twenty one 未知原因,无法执行请求Unknown reason, the request could not be executed 3030 VCU忙VCU is busy 3131 VCU未学习,没有SKVCU unlearned, no SK 3232 VCU未学习,没有PINVCU not learning, no PIN 3333 VCU已经学习过SK,但SK不符合VCU has learned SK, but SK does not meet 3434 VCU已经学习过PIN,但PIN不符合The VCU has learned the PIN, but the PIN does not match 3535 SK或PIN CRC校验错误SK or PIN CRC check error 3636 由于PIN不匹配,请求不执行Request not executed due to PIN mismatch

根据表1可知,当PEPS接收的应答码为00时,表示VCU成功执行,密钥学习成功。当PEPS接收的应答码为其他值时,表示密钥学习失败以及失败的原因。According to Table 1, when the response code received by the PEPS is 00, it means that the VCU is successfully executed and the key learning is successful. When the response code received by the PEPS is other values, it indicates the failure of key learning and the reason for the failure.

在一些实施例中,如果判断出第一汽车PIN码未经过学习,则进入第一汽车PIN码学习流程。图9根据本发明一实施例的第一汽车PIN码的学习流程900的流程图。如图9所示,第一汽车PIN码的学习流程900的步骤包括:In some embodiments, if it is determined that the first car PIN code has not been learned, the process of learning the first car PIN code is entered. FIG. 9 is a flowchart of a learning process 900 of the first automobile PIN code according to an embodiment of the present invention. As shown in Figure 9, the steps of the learning process 900 of the first automobile PIN code include:

步骤S910:接收PEPS发送的PIN码学习消息,并通过默认密钥对PIN码学习消息进行解密,PIN码学习消息包括加密的第二汽车PIN码。图10是根据本发明一实施例的PIN码学习消息1000的结构示意图。如图10所示,PIN码学习消息1000包括名称、发送方、接收方、ID和数据域。其中数据域包括加密的第二汽车PIN码、CRC16和填充数据。加密的第二汽车PIN码的长度为4个字节,CRC16的长度为2个字节,填充数据的长度为2个字节。Step S910: Receive the PIN code learning message sent by the PEPS, and decrypt the PIN code learning message by using the default key, where the PIN code learning message includes the encrypted second car PIN code. FIG. 10 is a schematic structural diagram of a PIN code learning message 1000 according to an embodiment of the present invention. As shown in FIG. 10, the PIN code learning message 1000 includes name, sender, receiver, ID, and data fields. The data field includes the encrypted second car PIN code, CRC16 and padding data. The length of the encrypted second car PIN code is 4 bytes, the length of the CRC16 is 2 bytes, and the length of the padding data is 2 bytes.

步骤S920:对解密出的第二汽车PIN码进行校验,如果校验失败,则结束PIN码学习过程。如果校验通过,则转入步骤S930。Step S920: Verify the decrypted second car PIN code, and if the verification fails, end the PIN code learning process. If the verification is passed, go to step S930.

步骤S930:判断第一汽车PIN码的值是否为第一值,如果否,则不作操作,结束学习过程。如果是,则转入步骤S940。第一值可以为0xFF。例如判断第一汽车PIN码的值是否都为0xFF,如果否,表示第一汽车PIN码已经经过学习,不需要进行操作。Step S930: Determine whether the value of the first car PIN code is the first value, if not, do not operate, and end the learning process. If yes, go to step S940. The first value may be 0xFF. For example, it is determined whether the value of the first car PIN code is all 0xFF, and if not, it means that the first car PIN code has been learned and no operation is required.

步骤S940:第二汽车PIN码预存在存储单元中作为第一汽车PIN码。具体地,将第二汽车PIN码的值替换VCU的存储单元中第一汽车PIN码的值,经过学习后,第一汽车PIN码与第二汽车PIN码一致。Step S940: The second car PIN code is pre-stored in the storage unit as the first car PIN code. Specifically, the value of the second car PIN code is replaced with the value of the first car PIN code in the storage unit of the VCU, and after learning, the first car PIN code is consistent with the second car PIN code.

在一些实施例中,第一汽车PIN码的学习流程还包括向PEPS发送PIN码学习结果消息。PIN码学习结果消息包括应答码和填充数据。PIN码学习结果由应答码表示。图11是根据本发明一实施例的PIN码学习结果消息1100的结构示意图。如图11所示,PIN码学习结果消息1100包括名称、发送方、接收方、ID和数据域。其中数据域包括应答码和填充数据。应答码的长度为1个字节,填充数据的长度为7个字节。其中应答码的定义可以如表1所示。根据表1可知,当PEPS接收的应答码为00时,表示VCU成功执行,PIN码学习成功。当PEPS接收的应答码为其他值时,表示PIN码学习失败以及失败的原因。In some embodiments, the learning process of the first automobile PIN code further includes sending a PIN code learning result message to the PEPS. The PIN code learning result message includes a response code and filling data. The PIN code learning result is represented by the answer code. FIG. 11 is a schematic structural diagram of a PIN code learning result message 1100 according to an embodiment of the present invention. As shown in FIG. 11, the PIN code learning result message 1100 includes name, sender, receiver, ID, and data fields. The data field includes the response code and padding data. The length of the response code is 1 byte, and the length of the padding data is 7 bytes. The definition of the response code can be as shown in Table 1. According to Table 1, when the response code received by the PEPS is 00, it means that the VCU is successfully executed and the PIN code learning is successful. When the response code received by the PEPS is other values, it indicates the failure of PIN code learning and the reason for the failure.

在一些实施例中,汽车防盗认证方法还包括第一密钥和第一汽车PIN码的复位过程。复位过程可以在汽车出厂前完成,也可以在出厂后完成。例如当汽车出厂后,汽车出现问题,需要对第一密钥和第一汽车PIN码进行复位时,售后工程师通过默认密钥对第一密钥和第一汽车PIN码进行复位。图12是根据本发明一实施例的第一密钥和第一汽车PIN码的复位流程1200的流程图。如图12所示,第一密钥和第一汽车PIN码的复位流程1200的步骤包括:In some embodiments, the automobile anti-theft authentication method further includes a reset process of the first key and the first automobile PIN code. The reset process can be done before the car leaves the factory or after it leaves the factory. For example, when the car has a problem and needs to reset the first key and the first car PIN code after the car leaves the factory, the after-sales engineer resets the first key and the first car PIN code through the default key. FIG. 12 is a flowchart of a reset process 1200 of the first key and the first car PIN code according to an embodiment of the present invention. As shown in FIG. 12 , the steps of the reset flow 1200 of the first key and the first car PIN code include:

步骤S1201:判断VCU存储的第一汽车PIN码是否为第一值(0xFF),如果是,表示已经是默认状态,不需要进行复位,结束复位流程。如果否,则转入步骤S1202。Step S1201: Determine whether the first car PIN code stored in the VCU is the first value (0xFF), if so, it means that it is already in the default state, no reset is required, and the reset process ends. If not, go to step S1202.

步骤S1202:接收PEPS发送的防盗复位消息,并通过默认密钥对防盗复位消息进行解密,防盗复位消息包括加密的第二汽车PIN码。图13是根据本发明一实施例的防盗复位消息1300的结构示意图。如图13所示,防盗复位消息1300包括名称、发送方、接收方、ID和数据域。其中数据域包括加密的第二汽车PIN码和第二随机数。加密的第二汽车PIN码的长度为4个字节,第二随机数的长度为4个字节。Step S1202: Receive the anti-theft reset message sent by the PEPS, and decrypt the anti-theft reset message by using the default key, where the anti-theft reset message includes the encrypted second vehicle PIN code. FIG. 13 is a schematic structural diagram of an anti-theft reset message 1300 according to an embodiment of the present invention. As shown in Figure 13, the immobilizer reset message 1300 includes name, sender, receiver, ID, and data fields. The data field includes the encrypted second car PIN code and the second random number. The length of the encrypted second car PIN code is 4 bytes, and the length of the second random number is 4 bytes.

步骤S1203:判断解密出的第二汽车PIN码与第一汽车PIN码是否匹配,如果否,结束复位过程。如果是,则转入步骤S1204。Step S1203: Determine whether the decrypted second car PIN code matches the first car PIN code, and if not, end the reset process. If yes, go to step S1204.

步骤S1204:将第一汽车PIN码的值和第一密钥的值设置为第一值。具体地,擦除VCU存储单元中的第一汽车PIN码的值和第一密钥的值,使得第一汽车PIN码的值和第一密钥的值都为0xFF。Step S1204: Set the value of the first car PIN code and the value of the first key as the first value. Specifically, the value of the first car PIN code and the value of the first key in the VCU storage unit are erased, so that the value of the first car PIN code and the value of the first key are both 0xFF.

在一些实施例中,第一密钥和第一汽车PIN码的复位过程还包括向PEPS发送复位结果消息。复位结果消息包括应答码和填充数据。复位结果由应答码表示。图14是根据本发明一实施例的复位结果消息1400的结构示意图。如图14所示,复位结果消息1400包括名称、发送方、接收方、ID和数据域。其中数据域包括应答码和填充数据。应答码的长度为1个字节,填充数据的长度为7个字节。其中应答码的定义可以如表1所示。根据表1可知,当PEPS接收的应答码为00时,表示VCU成功执行,复位成功。当PEPS接收的应答码为其他值时,表示复位失败以及失败的原因。In some embodiments, the reset process of the first key and the first car PIN code further includes sending a reset result message to the PEPS. The reset result message includes an answer code and padding data. The reset result is indicated by an acknowledgement code. FIG. 14 is a schematic structural diagram of a reset result message 1400 according to an embodiment of the present invention. As shown in FIG. 14, the reset result message 1400 includes name, sender, receiver, ID, and data fields. The data field includes the response code and padding data. The length of the response code is 1 byte, and the length of the padding data is 7 bytes. The definition of the response code can be as shown in Table 1. According to Table 1, when the response code received by the PEPS is 00, it means that the VCU is successfully executed and the reset is successful. When the response code received by the PEPS is other values, it indicates the reset failure and the reason for the failure.

本发明的汽车防盗认证方法通过包括加密的第一汽车PIN码的认证请求消息和包括加密的第二汽车PIN码的认证响应消息进行双向认证,认证流程简单且安全可靠;VCU的第一密钥和第一汽车PIN码均具有自学习功能,能在产线方便、高效的完成该功能的出厂配置;VCU同时也具备防盗认证复位功能,方便售后的重新配置。The automobile anti-theft authentication method of the present invention performs two-way authentication through the authentication request message including the encrypted first car PIN code and the authentication response message including the encrypted second car PIN code, and the authentication process is simple, safe and reliable; the first key of the VCU Both the PIN code of the first car and the first auto have a self-learning function, which can conveniently and efficiently complete the factory configuration of this function on the production line; the VCU also has the anti-theft authentication reset function, which is convenient for after-sales reconfiguration.

图15是根据本发明另一实施例的汽车防盗认证方法1500的流程图,汽车防盗认证方法1500应用于无钥匙进入及启动系统PEPS。如图15所示,汽车防盗认证方法1500包括如下步骤:FIG. 15 is a flowchart of a vehicle anti-theft authentication method 1500 according to another embodiment of the present invention. The vehicle anti-theft authentication method 1500 is applied to a keyless entry and start system PEPS. As shown in FIG. 15 , the method 1500 for vehicle anti-theft authentication includes the following steps:

步骤S1501:接收整车控制器VCU发送的认证请求消息,并通过自身预存的第二密钥对认证请求消息进行解密,认证请求消息包括加密的第一汽车PIN码。其中,加密的第一汽车PIN码是用经过学习的第一密钥和加密算法对经过学习的第一汽车PIN码进行加密生成。经过学习的第一密钥与第二密钥一致。因此,PEPS可以采用第二密钥和与VCU相同的加密算法对包括加密的第一汽车PIN码的认证请求消息进行解密。Step S1501: Receive the authentication request message sent by the vehicle controller VCU, and decrypt the authentication request message by using the second key pre-stored by itself, where the authentication request message includes the encrypted first vehicle PIN code. The encrypted first car PIN code is generated by encrypting the learned first car PIN code with a learned first key and an encryption algorithm. The learned first key is identical to the second key. Therefore, the PEPS can decrypt the authentication request message including the encrypted first car PIN code using the second key and the same encryption algorithm as the VCU.

步骤S1502:判断解密出的第一汽车PIN码与自身预存的第二汽车PIN码是否匹配,如果否,则转入步骤S1503,如果是,则转入步骤S1504。Step S1502: Determine whether the decrypted first car PIN code matches the second car PIN code pre-stored by itself, if not, go to step S1503, if so, go to step S1504.

步骤S1503:将第二值作为认证响应消息。第二值的值可以按照约定设置,例如可以设置为8字节的全0xFF,表示VCU向PEPS的认证的单向认证失败,进而整体认证失败。Step S1503: Use the second value as the authentication response message. The value of the second value can be set according to the convention, for example, it can be set to all 0xFF of 8 bytes, indicating that the one-way authentication of the authentication of the VCU to the PEPS fails, and thus the overall authentication fails.

步骤S1504:根据第二密钥、第二汽车PIN码和第二随机数生成认证响应消息。Step S1504: Generate an authentication response message according to the second key, the second car PIN code and the second random number.

步骤S1505:发送认证响应消息给VCU,认证响应消息用于判定是否认证成功。Step S1505: Send an authentication response message to the VCU, where the authentication response message is used to determine whether the authentication is successful.

在一些实施例中,汽车防盗认证方法还包括每隔一段时间向VCU发送密钥学习消息,密钥学习消息包括加密的第二密钥;判断是否在时间阈值内接收到VCU发送的密钥学习结果消息,如果否,则本次密钥学习失败。In some embodiments, the vehicle anti-theft authentication method further includes sending a key learning message to the VCU at regular intervals, where the key learning message includes the encrypted second key; and judging whether the key learning message sent by the VCU is received within a time threshold Result message, if not, the key learning failed this time.

在一些实施例中,汽车防盗认证方法还包括每隔一段时间向VCU发送PIN码学习消息,PIN码学习消息包括加密的第二汽车PIN码;判断是否在时间阈值内接收到VCU发送的PIN码学习结果消息,如果否,则本次PIN码学习失败。In some embodiments, the vehicle anti-theft authentication method further includes sending a PIN code learning message to the VCU at regular intervals, where the PIN code learning message includes an encrypted second vehicle PIN code; determining whether the PIN code sent by the VCU is received within a time threshold Learning result message, if not, the current PIN code learning fails.

在一些实施例中,汽车防盗认证方法还包括每隔一段时间向VCU发送防盗复位消息,防盗复位消息包括加密的第二汽车PIN码;判断是否在时间阈值内接收到VCU发送的复位结果消息,如果否,则本次复位失败。In some embodiments, the vehicle anti-theft authentication method further includes sending an anti-theft reset message to the VCU at regular intervals, where the anti-theft reset message includes an encrypted second vehicle PIN code; judging whether the reset result message sent by the VCU is received within a time threshold, If not, this reset fails.

图16是根据本发明一实施例的汽车防盗认证系统1600的系统框图。如图16所示,汽车防盗认证系统1600包括整车控制器(VCU)1601和无钥匙进入及启动系统(PEPS)1602。整车控制器1601和无钥匙进入及启动系统1602可以通过CAN网络进行通讯。整车控制器1601用于每隔一段时间向无钥匙进入及启动系统1602发送认证请求消息,认证请求消息包括加密的第一汽车PIN码,以及接收无钥匙进入及启动系统1602反馈的认证响应消息,根据认证响应消息判断是否认证成功。在一些实施例中,加密的第一汽车PIN码是通过第一密钥对第一汽车PIN码加密生成的,其中第一密钥和第一汽车PIN码都是经过学习的。FIG. 16 is a system block diagram of an automobile anti-theft authentication system 1600 according to an embodiment of the present invention. As shown in FIG. 16 , the vehicle anti-theft authentication system 1600 includes a vehicle controller (VCU) 1601 and a keyless entry and start system (PEPS) 1602 . The vehicle controller 1601 and the keyless entry and start system 1602 can communicate via the CAN network. The vehicle controller 1601 is used to send an authentication request message to the keyless entry and start system 1602 at regular intervals. The authentication request message includes the encrypted first car PIN code, and receives an authentication response message fed back by the keyless entry and start system 1602 , according to the authentication response message to determine whether the authentication is successful. In some embodiments, the encrypted first car PIN code is generated by encrypting the first car PIN code with a first key, wherein both the first key and the first car PIN code are learned.

无钥匙进入及启动系统1602用于接收整车控制器1601发送的认证请求消息,并通过自身预存的第二密钥对认证请求消息进行解密,判断解密出的第一汽车PIN码与自身预存的第二汽车PIN码是否匹配,根据匹配结果发送认证响应消息给整车控制器1601。The keyless entry and start system 1602 is used to receive the authentication request message sent by the vehicle controller 1601, and decrypt the authentication request message through its own pre-stored second key, and determine the decrypted first car PIN code and its own pre-stored PIN code. Whether the PIN code of the second car matches, send an authentication response message to the vehicle controller 1601 according to the matching result.

在一些实施例中,根据匹配结果发送认证响应消息给VCU的步骤包括:如果匹配成功,则根据第二密钥、第二汽车PIN码和第二随机数生成认证响应消息,如果否,将第二值作为认证响应消息。In some embodiments, the step of sending an authentication response message to the VCU according to the matching result includes: if the matching is successful, generating an authentication response message according to the second key, the second car PIN code and the second random number; Two values as the authentication response message.

在一些实施例中,根据认证响应消息判断是否认证成功的步骤包括:通过第一密钥对认证响应消息进行解密;判断解密出的第二汽车PIN码与第一汽车PIN码是否匹配,如果是,则认证成功,否则,认证失败。In some embodiments, the step of judging whether the authentication is successful according to the authentication response message includes: decrypting the authentication response message by using the first key; judging whether the decrypted second car PIN code matches the first car PIN code, if yes , the authentication succeeds, otherwise, the authentication fails.

在一些实施例中,根据认证响应消息判断是否认证成功的步骤还包括:在对认证响应消息进行解密之前,先判断认证响应消息是否为第二值,如果是,则直接判断认证失败,如果否,则对认证响应消息进行解密。In some embodiments, the step of judging whether the authentication is successful according to the authentication response message further includes: before decrypting the authentication response message, firstly judging whether the authentication response message is the second value, if so, directly judging the authentication failure, if not , decrypt the authentication response message.

在一些实施例中,整车控制器1601和无钥匙进入及启动系统1602使用相同的AES算法对数据进行加密和解密,可最大可能的降低VCU资源的使用并保证数据的安全性。In some embodiments, the vehicle controller 1601 and the keyless entry and start system 1602 use the same AES algorithm to encrypt and decrypt data, which can minimize the use of VCU resources and ensure data security.

上文已对基本概念做了描述,显然,对于本领域技术人员来说,上述发明披露仅仅作为示例,而并不构成对本申请的限定。虽然此处并没有明确说明,本领域技术人员可能会对本申请进行各种修改、改进和修正。该类修改、改进和修正在本申请中被建议,所以该类修改、改进、修正仍属于本申请示范实施例的精神和范围。The basic concept has been described above. Obviously, for those skilled in the art, the above disclosure of the invention is only an example, and does not constitute a limitation to the present application. Although not explicitly described herein, various modifications, improvements, and corrections to this application may occur to those skilled in the art. Such modifications, improvements, and corrections are suggested in this application, so such modifications, improvements, and corrections still fall within the spirit and scope of the exemplary embodiments of this application.

同时,本申请使用了特定词语来描述本申请的实施例。如“一个实施例”、“一实施例”、和/或“一些实施例”意指与本申请至少一个实施例相关的某一特征、结构或特点。因此,应强调并注意的是,本说明书中在不同位置两次或多次提及的“一实施例”或“一个实施例”或“一替代性实施例”并不一定是指同一实施例。此外,本申请的一个或多个实施例中的某些特征、结构或特点可以进行适当的组合。Meanwhile, the present application uses specific words to describe the embodiments of the present application. Such as "one embodiment," "an embodiment," and/or "some embodiments" means a certain feature, structure, or characteristic associated with at least one embodiment of the present application. Therefore, it should be emphasized and noted that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in different places in this specification are not necessarily referring to the same embodiment . Furthermore, certain features, structures or characteristics of the one or more embodiments of the present application may be combined as appropriate.

同理,应当注意的是,为了简化本申请披露的表述,从而帮助对一个或多个发明实施例的理解,前文对本申请实施例的描述中,有时会将多种特征归并至一个实施例、附图或对其的描述中。但是,这种披露方法并不意味着本申请对象所需要的特征比权利要求中提及的特征多。实际上,实施例的特征要少于上述披露的单个实施例的全部特征。Similarly, it should be noted that, in order to simplify the expressions disclosed in the present application and thus help the understanding of one or more embodiments of the invention, in the foregoing description of the embodiments of the present application, various features are sometimes combined into one embodiment, in the drawings or descriptions thereof. However, this method of disclosure does not imply that the subject matter of the application requires more features than those mentioned in the claims. Indeed, there are fewer features of an embodiment than all of the features of a single embodiment disclosed above.

虽然本申请已参照当前的具体实施例来描述,但是本技术领域中的普通技术人员应当认识到,以上的实施例仅是用来说明本申请,在没有脱离本申请精神的情况下还可作出各种等效的变化或替换,因此,只要在本申请的实质精神范围内对上述实施例的变化、变型都将落在本申请的权利要求书的范围内。Although the present application has been described with reference to the current specific embodiments, those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and can be made without departing from the spirit of the present application. Various equivalent changes or substitutions, therefore, as long as the changes and modifications to the above-mentioned embodiments within the spirit and scope of the present application, all fall within the scope of the claims of the present application.

Claims (20)

1. An automobile anti-theft authentication method is applied to a VCU (vehicle control unit), and is characterized by comprising the following steps:
sending the authentication request message to a keyless entry and startup system PEPS at intervals, wherein the authentication request message comprises an encrypted first automobile PIN code;
receiving an authentication response message fed back by the PEPS, and decrypting the authentication response message through a first key, wherein the authentication response message comprises an encrypted second automobile PIN;
and judging whether the decrypted second automobile PIN code is matched with the first automobile PIN code, if so, successfully authenticating, and otherwise, failing to authenticate.
2. The vehicle anti-theft authentication method according to claim 1, wherein the encrypted first vehicle PIN is generated by encrypting the first vehicle PIN by a first key, wherein the first key and the first vehicle PIN are learned.
3. The vehicle anti-theft authentication method according to claim 2, further comprising: and judging whether the first secret key and the first automobile PIN are learned or not, and if not, failing authentication.
4. The vehicle anti-theft authentication method according to claim 3, wherein if the first key is not learned, a first key learning process is entered.
5. The vehicle anti-theft authentication method according to claim 4, wherein the step of the first key learning procedure comprises:
receiving a key learning message sent by the PEPS, and decrypting the key learning message through a default key, wherein the key learning message comprises an encrypted second key;
and verifying the decrypted second key, and if the verification is passed, pre-storing the second key in a storage unit as the learned first key.
6. The vehicle anti-theft authentication method according to claim 5, further comprising sending a key learning result message to the PEPS, the key learning result message including a response code.
7. The vehicle anti-theft authentication method according to claim 3, wherein if the first vehicle PIN is not learned, a first vehicle PIN learning process is entered.
8. The vehicle anti-theft authentication method according to claim 4, wherein the step of the first vehicle PIN code learning process comprises:
receiving a PIN learning message sent by the PEPS, and decrypting the PIN learning message through a default key, wherein the PIN learning message comprises an encrypted second automobile PIN;
and verifying the decrypted second automobile PIN code, and if the verification is passed, pre-storing the second automobile PIN code in a storage unit as the learned first automobile PIN code.
9. The vehicle anti-theft authentication method according to claim 5, further comprising sending a PIN learning result message to the PEPS, the PIN learning result message including a response code.
10. The vehicle anti-theft authentication method according to claim 1, further comprising:
receiving an anti-theft reset message sent by the PEPS, and decrypting the anti-theft reset message through a default key, wherein the anti-theft reset message comprises an encrypted second automobile PIN code;
and judging whether the decrypted second automobile PIN code is matched with the first automobile PIN code, and if so, setting the value of the first automobile PIN code and the value of the first secret key as first values.
11. The vehicle anti-theft authentication method according to claim 10, further comprising sending a reset result message to the PEPS, the reset result message including a response code.
12. The vehicle anti-theft authentication method according to claim 1, further comprising determining whether the authentication response message is received within a threshold time, and if not, failing the authentication.
13. An automobile anti-theft authentication method is applied to a keyless entry and start system PEPS and is characterized by comprising the following steps:
receiving an authentication request message sent by a VCU of the vehicle controller, and decrypting the authentication request message through a second secret key prestored by the VCU, wherein the authentication request message comprises an encrypted first vehicle PIN code;
judging whether the decrypted first automobile PIN code is matched with a second automobile PIN code prestored by the automobile, if so, generating an authentication response message according to the second secret key, the second automobile PIN code and a second random number, and if not, taking a second value as the authentication response message;
and sending the authentication response message to the VCU, wherein the authentication response message is used for judging whether the authentication is successful or not.
14. The vehicle anti-theft authentication method according to claim 13, further comprising:
sending a key learning message to the VCU at intervals, the key learning message including the encrypted second key;
and judging whether the key learning result message sent by the VCU is received within a time threshold, and if not, failing to learn the key this time.
15. The vehicle anti-theft authentication method according to claim 13, further comprising:
sending a PIN learning message to the VCU at intervals, the PIN learning message including the encrypted second automobile PIN;
and judging whether the PIN learning result message sent by the VCU is received within a time threshold, and if not, failing to learn the PIN.
16. The vehicle anti-theft authentication method according to claim 13, further comprising:
sending an anti-theft reset message to the VCU at intervals, the anti-theft reset message comprising the encrypted second automobile PIN code;
and judging whether the reset feedback message sent by the VCU is received within a time threshold, and if not, failing to reset this time.
17. An automobile anti-theft authentication system, comprising:
the vehicle control unit VCU is used for sending the authentication request message to the keyless entry and start system PEPS at intervals, receiving an authentication response message fed back by the PEPS and judging whether the authentication is successful or not according to the authentication response message, wherein the authentication request message comprises an encrypted first automobile PIN;
the keyless entry and start system PEPS is used for receiving an authentication request message sent by a VCU of the vehicle controller, decrypting the authentication request message through a second key prestored by the PEPS, judging whether the decrypted first vehicle PIN code is matched with a second vehicle PIN code prestored by the PEPS, and sending an authentication response message to the VCU according to a matching result, wherein the authentication response message comprises the encrypted second vehicle PIN code.
18. The vehicle anti-theft authentication system of claim 17, wherein the step of transmitting the authentication response message to the VCU according to the matching result comprises:
if the matching is successful, generating an authentication response message according to the second secret key, the second automobile PIN code and a second random number;
and if the matching is unsuccessful, using the second value as the authentication response message.
19. The vehicle anti-theft authentication system according to claim 17, wherein the encrypted first vehicle PIN is generated by encrypting the first vehicle PIN with a first key, wherein the first key and the first vehicle PIN are learned.
20. The vehicle immobilizer system of claim 19, wherein the step of determining whether the authentication is successful based on the authentication response message comprises:
decrypting the authentication response message by the first key;
and judging whether the decrypted second automobile PIN code is matched with the first automobile PIN code, if so, the authentication is successful, and otherwise, the authentication is failed.
CN202210884660.5A 2022-07-26 2022-07-26 Automobile anti-theft authentication method and system Active CN115107701B (en)

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