CN111061251A - Method for detecting automobile information safety based on diagnostic protocol - Google Patents

Method for detecting automobile information safety based on diagnostic protocol Download PDF

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Publication number
CN111061251A
CN111061251A CN201911320817.6A CN201911320817A CN111061251A CN 111061251 A CN111061251 A CN 111061251A CN 201911320817 A CN201911320817 A CN 201911320817A CN 111061251 A CN111061251 A CN 111061251A
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server
information
response
automobile
client sends
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张亚楠
马超
宁玉桥
李立东
武智
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China Automotive Technology and Research Center Co Ltd
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China Automotive Technology and Research Center Co Ltd
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0221—Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/50—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
    • G06F21/55—Detecting local intrusion or implementing counter-measures

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer And Data Communications (AREA)

Abstract

The invention provides a method for detecting automobile information safety based on a diagnostic protocol, which comprises the following steps: reading automobile ECU information; rewriting automobile ECU information; and uploading and downloading the ECU data file. The invention has the beneficial effects that: the information security situation of the automobile controller can be effectively detected, the information security level of the automobile can be greatly improved, the automobile is prevented from being attacked and controlled by hackers to a great extent, and the safety risk of the operation of the automobile is reduced.

Description

Method for detecting automobile information safety based on diagnostic protocol
Technical Field
The invention belongs to the field of automobile information safety detection, and particularly relates to a method for detecting automobile information safety based on a diagnostic protocol.
Background
With the rapid development of automobile intellectualization and informatization, the safety performance of automobile information is more and more valued by the people in the industry, and the information safety detection of the automobile by using external equipment through a diagnosis protocol also becomes a very important ring for the automobile to market. At present, a Universal Diagnostic Service (UDS) diagnostic protocol in the domestic automobile industry is gradually popularized and popularized, related diagnostic services and application research are more and more, domestic and foreign scholars research application of the UDS diagnostic service in a vehicle-mounted Electronic Control Unit (ECU) widely, most of the domestic and foreign scholars research the application of the UDS diagnostic service in the aspect of after-sale services such as fault detection, signal reading and the like, and services such as data stream reading, fault code reading, ECU data upgrading and the like can be realized. For example, the research institute of automotive engineering in Guangdong group designs the diagnostic function of the ECU based on the UDS protocol, and realizes the functions of data stream reading, fault detection, input and output control, routine control, software refreshing and the like. In addition, the realization of a study seat controller UDS diagnosis service is researched, and the influence of network layer timing parameters on message transmission time is researched.
At present, automobile diagnosis protocols are developed and researched from the perspective of providing after-sales diagnosis services, and related researches based on the perspective of automobile information safety are few. A hacker of an automobile attack can tamper data of an automobile controller by using a wireless transmission device through a UDS (Universal data System) diagnostic protocol, and then attack an automobile power system, an automobile body system and the like, which brings great hidden danger to safe operation of the automobile.
Disclosure of Invention
In view of the above, the present invention is directed to a method for detecting information security of an automobile based on a diagnostic protocol, so as to solve the above-mentioned problems.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for detecting automobile information safety based on a diagnostic protocol comprises the following steps:
A. reading automobile ECU information;
B. rewriting automobile ECU information;
C. uploading and downloading ECU data files;
D. and B, carrying out automobile ECU information safety diagnosis according to the safety access in each step of the steps A-C.
Further, the specific process of reading the automobile ECU information in step a is as follows:
A1. the client sends a diagnosis session service identifier to enter a corresponding session mode;
A2. the server side judges, and if a positive response of the server side is obtained, the step A3 is carried out; if the negative response of the server is obtained, analyzing the negative response code, checking the reason, correcting, and sending the diagnosis session service identification again until the positive response of the server is obtained;
A3. the client sends and reads the information service identification;
A4. judging by the server side, if a positive response of the server side is obtained, analyzing the response message information, and entering the step A6; if the negative response of the server is obtained, analyzing the negative response code, and if the analyzed code is required to be safely accessed, entering the step A5;
A5. after the key algorithm is cracked, the client sends a security access identification service, the security access identification service is successfully unlocked, and after a positive response of the server is obtained, the step A3 is carried out to read information;
A6. and the client obtains the read ECU information content.
Further, the process of rewriting the automobile ECU information in step B is as follows:
B1. the client sends a diagnosis session service identifier to enter a corresponding session mode;
B2. the server side judges, and if a positive response of the server side is obtained, the step B3 is carried out; if the negative response of the server is obtained, analyzing the negative response code, checking the reason, correcting, and sending the diagnosis session service identification again until the positive response of the server is obtained;
B3. the client sends the rewriting information service identification;
B4. judging by the server side, and if a positive response of the server side is obtained, entering step B6; if the negative response of the server is obtained, analyzing the negative response code, and if the analyzed code is required to be safely accessed, entering the step B5;
B5. after the key algorithm is cracked, the client sends the security access identification service, the security access identification service is successfully unlocked, and after a positive response of the server is obtained, the operation is switched to the step B3 to rewrite information;
B6. the client side obtains a response for prompting the success of rewriting the information.
Further, the process of uploading and downloading the ECU data file in step C is as follows:
C1. the client sends a diagnosis session service identifier to enter a corresponding session mode;
C2. the server side judges, and if a positive response of the server side is obtained, the step C3 is carried out; if the negative response of the server is obtained, analyzing the negative response code, checking the reason, correcting, and sending the diagnosis session service identification again until the positive response of the server is obtained;
C3. the client sends an erasing routine service identifier and an uploading or downloading service identifier;
C4. if a positive server-side response is obtained, the step C5 is carried out; if the negative response of the server is obtained, analyzing the negative response code, and if the analyzed code is the safe access is needed, entering the step C8;
C5. the client sends a data transmission service identifier to perform data transmission;
C6. the server side judges that the ECU data file uploading and downloading are finished if the server side obtains a positive response, and the step C7 is carried out; if the server side obtains a negative response, transmitting interruption and searching interruption reasons;
C7. the client sends a reset service identifier and exits the existing session mode;
C8. the client sends the security access identification service, and the server performs unlocking successfully, and after obtaining a positive response, the step C3 is performed.
Compared with the prior art, the method for detecting the automobile information safety based on the diagnostic protocol has the following advantages:
the method for detecting the information security of the automobile based on the diagnostic protocol can effectively detect the information security condition of the automobile controller, can greatly improve the information security level of the automobile, greatly avoid the automobile from being attacked and controlled by hackers, and reduce the safety risk of the automobile running.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a method for detecting vehicle information security based on a diagnostic protocol according to an embodiment of the present invention;
FIG. 2 is a flow chart for reading or rewriting ECU information based on a diagnostic protocol;
FIG. 3 is a flowchart for uploading and downloading ECU data files based on a diagnostic protocol.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, a method for detecting information security of a vehicle based on a diagnostic protocol includes the following steps:
A. reading automobile ECU information;
B. rewriting automobile ECU information;
C. uploading and downloading ECU data files;
D. and B, carrying out automobile ECU information safety diagnosis according to the safety access in each step of the steps A-C.
As shown in fig. 2, the specific process of reading the ECU information of the vehicle in step a is as follows:
A1. the client sends a diagnosis session service identifier to enter a corresponding session mode;
A2. the server side judges, and if a positive response of the server side is obtained, the step A3 is carried out; if the negative response of the server is obtained, analyzing the negative response code, checking the reason, correcting, and sending the diagnosis session service identification again until the positive response of the server is obtained;
A3. the client sends and reads the information service identification;
A4. judging by the server side, if a positive response of the server side is obtained, analyzing the response message information, and entering the step A6; if the negative response of the server is obtained, analyzing the negative response code, and if the analyzed code is required to be safely accessed, entering the step A5;
A5. after the key algorithm is cracked, the client sends a security access identification service, the security access identification service is successfully unlocked, and after a positive response of the server is obtained, the step A3 is carried out to read information;
A6. and the client obtains the analysis response message and reads the information content of the ECU.
The process of rewriting the automobile ECU information in the step B is as follows:
B1. the client sends a diagnosis session service identifier to enter a corresponding session mode;
B2. the server side judges, and if a positive response of the server side is obtained, the step B3 is carried out; if the negative response of the server is obtained, analyzing the negative response code, checking the reason, correcting, and sending the diagnosis session service identification again until the positive response of the server is obtained;
B3. the client sends the rewriting information service identification;
B4. judging by the server side, and if a positive response of the server side is obtained, entering step B6; if the negative response of the server is obtained, analyzing the negative response code, and if the analyzed code is required to be safely accessed, entering the step B5;
B5. after the key algorithm is cracked, the client sends the security access identification service, the security access identification service is successfully unlocked, and after a positive response of the server is obtained, the operation is switched to the step B3 to rewrite information;
B6. the client side obtains a response for prompting the success of rewriting the information.
As shown in fig. 3, the process of uploading and downloading the ECU data file in step C is as follows:
C1. the client sends a diagnosis session service identifier to enter a corresponding session mode;
C2. the server side judges, and if a positive response of the server side is obtained, the step C3 is carried out; if the negative response of the server is obtained, analyzing the negative response code, checking the reason, correcting, and sending the diagnosis session service identification again until the positive response of the server is obtained;
C3. the client sends an erasing routine service identifier and an uploading or downloading service identifier;
C4. if a positive server-side response is obtained, the step C5 is carried out; if the negative response of the server is obtained, analyzing the negative response code, and if the analyzed code is the safe access is needed, entering the step C8;
C5. the client sends a data transmission service identifier to perform data transmission;
C6. the server side judges that the ECU data file uploading and downloading are finished if the server side obtains a positive response, and the step C7 is carried out; if the server side obtains a negative response, transmitting interruption and searching interruption reasons;
C7. the client sends a reset service identifier and exits the existing session mode;
C8. the client sends the security access identification service, and the server performs unlocking successfully, and after obtaining a positive response, the step C3 is performed.
The method judges the safety performance of the automobile ECU and tests the information safety condition of the automobile through the connection between the client and the server and the interactive response area requesting response between the client and the server. The method comprises three-level test contents, and is characterized in that ECU information is read through a diagnostic protocol, the ECU information is rewritten, and the safety access of ECU data files is uploaded and downloaded, so that the safety of the automobile information is judged according to the ECU information.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (4)

1.一种基于诊断协议检测汽车信息安全的方法，其特征在于，包括以下步骤：1. a method for detecting automobile information security based on diagnostic protocol, is characterized in that, comprises the following steps: A.读取汽车ECU信息；A. Read the car ECU information; B.改写汽车ECU信息；B. Rewrite the car ECU information; C.上传下载ECU数据文件；C. Upload and download ECU data files; D.根据步骤A-C每一步中的安全访问进行汽车ECU信息安全诊断。D. According to the security access in each step of steps A-C, the information security diagnosis of the automobile ECU is carried out. 2.根据权利要求1所述的一种基于诊断协议检测汽车信息安全的方法，其特征在于：所述步骤A中读取汽车ECU信息的具体过程如下：2. a kind of method for detecting automobile information security based on diagnostic protocol according to claim 1, is characterized in that: the concrete process of reading automobile ECU information in described step A is as follows: A1.客户端发送诊断会话服务标识进入相应的会话模式；A1. The client sends the diagnostic session service ID to enter the corresponding session mode; A2.服务器端进行判断，若得到服务器端的肯定响应，进入步骤A3；若得到服务器端否定响应，解析否定响应码，查看原因并修正，再次发送诊断会话服务标识，直至得到服务器端的肯定响应；A2. The server makes a judgment. If a positive response from the server is obtained, go to step A3; if a negative response from the server is obtained, parse the negative response code, check the cause and correct it, and send the diagnostic session service identifier again until a positive response from the server is obtained; A3.客户端发送读取信息服务标识；A3. The client sends and reads the information service identifier; A4.服务器端判定，若得到服务器端肯定响应，则解析响应报文信息，进入步骤A6；若得到服务器端否定响应，解析否定响应码，若解析码为需要进行安全访问，则进入步骤A5；A4. The server side determines that if a positive response from the server is obtained, the response message information is parsed, and the process goes to step A6; if a negative response from the server is obtained, the negative response code is parsed, and if the parsing code is that security access is required, then the process goes to step A5; A5.破解密钥算法后，客户端发送安全访问标识服务，并成功进行解锁，得到服务器端肯定响应后，再转入步骤A3读取信息；A5. After cracking the key algorithm, the client sends the security access identification service, and successfully unlocks it, and after receiving a positive response from the server, it goes to step A3 to read the information; A6.客户端得到读取的ECU信息内容。A6. The client gets the read ECU information content. 3.根据权利要求1所述的一种基于诊断协议检测汽车信息安全的方法，其特征在于：所述步骤B中改写汽车ECU信息的过程如下：3. a kind of method for detecting automobile information security based on diagnostic protocol according to claim 1, is characterized in that: the process of rewriting automobile ECU information in described step B is as follows: B1.客户端发送诊断会话服务标识进入相应的会话模式；B1. The client sends the diagnostic session service identifier to enter the corresponding session mode; B2.服务器端进行判断，若得到服务器端的肯定响应，进入步骤B3；若得到服务器端否定响应，解析否定响应码，查看原因并修正，再次发送诊断会话服务标识，直至得到服务器端的肯定响应；B2. The server side makes a judgment, if it gets a positive response from the server, go to step B3; if it gets a negative response from the server, parse the negative response code, check the reason and make corrections, and send the diagnostic session service identifier again until it gets a positive response from the server; B3.客户端发送改写信息服务标识；B3. The client sends and rewrites the information service identifier; B4.服务器端判定，若得到服务器端肯定响应，则进入步骤B6；若得到服务器端否定响应，解析否定响应码，若解析码为需要进行安全访问，则进入步骤B5；B4. The server side determines that if a positive response from the server is obtained, proceed to step B6; if a negative response from the server is obtained, parse the negative response code, and if the parsing code is that security access is required, then proceed to step B5; B5.破解密钥算法后，客户端发送安全访问标识服务，并成功进行解锁，得到服务器端肯定响应后，再转入步骤B3进行改写信息的操作；B5. After cracking the key algorithm, the client sends the security access identification service, and successfully unlocks it, and after receiving a positive response from the server, it goes to step B3 to rewrite the information; B6.客户端得到提示改写信息成功的响应。B6. The client gets a response indicating that the rewriting information is successful. 4.根据权利要求1所述的一种基于诊断协议检测汽车信息安全的方法，其特征在于：所述步骤C中上传下载ECU数据文件的过程如下：4. a kind of method for detecting automobile information security based on diagnostic protocol according to claim 1, is characterized in that: the process of uploading and downloading ECU data file in described step C is as follows: C1.客户端发送诊断会话服务标识进入相应的会话模式；C1. The client sends the diagnostic session service identifier to enter the corresponding session mode; C2.服务器端进行判定，若得到服务器端的肯定响应，进入步骤C3；若得到服务器端否定响应，解析否定响应码，查看原因并修正，再次发送诊断会话服务标识，直至得到服务器端的肯定响应；C2. The server makes a judgment. If a positive response from the server is obtained, go to step C3; if a negative response from the server is obtained, parse the negative response code, check the cause and correct it, and send the diagnostic session service identifier again until a positive response from the server is obtained; C3.客户端发送擦除例程服务标识、上传或下载服务标识；C3. The client sends the erase routine service ID, upload or download service ID; C4.若得到服务器端肯定响应，则进入步骤C5；若得到服务器端否定响应，解析否定响应码，若解析码为需要进行安全访问，则进入步骤C8；C4. If a positive response from the server is obtained, then go to step C5; if a negative response from the server is obtained, parse the negative response code, and if the parsing code is that security access is required, then go to step C8; C5.客户端发送数据传输服务标识，进行数据传输；C5. The client sends the data transmission service identifier for data transmission; C6.服务器端判定，若服务器端得到肯定响应，则表明上传下载ECU数据文件已经完成，进行步骤C7；若服务器端得到否定响应，则传输中断，查找中断原因；C6. The server side determines that if the server side gets a positive response, it means that the uploading and downloading of the ECU data file has been completed, and go to step C7; if the server side gets a negative response, the transmission is interrupted, and the reason for the interruption is searched; C7.客户端发送复位服务标识，退出现有会话模式；C7. The client sends a reset service identifier to exit the existing session mode; C8.客户端发送安全访问标识服务，并成功进行解锁，得到服务器端肯定响应后，再转入步骤C3。C8. The client sends the security access identification service, and unlocks it successfully, and then goes to step C3 after receiving a positive response from the server.
CN201911320817.6A 2019-12-19 2019-12-19 Method for detecting automobile information safety based on diagnostic protocol Pending CN111061251A (en)

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