CN113709101A - Automobile fingerprint safety identification system and method - Google Patents
Automobile fingerprint safety identification system and method Download PDFInfo
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- CN113709101A CN113709101A CN202110815872.3A CN202110815872A CN113709101A CN 113709101 A CN113709101 A CN 113709101A CN 202110815872 A CN202110815872 A CN 202110815872A CN 113709101 A CN113709101 A CN 113709101A
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/12—Applying verification of the received information
- H04L63/123—Applying verification of the received information received data contents, e.g. message integrity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/20—Network architectures or network communication protocols for network security for managing network security; network security policies in general
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Abstract
The invention discloses a system and a method for safely identifying automobile fingerprints, aiming at the problem that the validity of detection cannot be ensured by fixedly comparing VIN codes, the invention provides the following scheme, which comprises an ECU module, a safety server and an intelligent safety gateway, wherein the intelligent safety gateway is connected with the ECU module through the safety server, the intelligent safety gateway is provided with a control module, an ID collection module, a VFP generation module and a fingerprint comparison module, the control module is respectively connected with the ID collection module, the VFP generation module and the fingerprint comparison module, and the safety server is respectively connected with an uploading module and an authentication module; an uploading module: the device ID and the chip ID are used for uploading the collected device ID and chip ID of the ECU; an authentication module: and comparing and authenticating the generated VFP information with the information in the database module. According to the method, the VIN code is compared with the VFP value in the database, and the recognition result is more reliable through comparison of the uncontrollable fingerprint generated after the automobile is started and the fingerprint information in the database.
Description
Technical Field
The invention relates to the technical field of automobile fingerprints, in particular to an automobile fingerprint safety identification system and method.
Background
At present, the ECU of the automobile generally has the functions of fault self-diagnosis and protection, and when the system has a fault, it can automatically record the fault code in the RAM and use the protection measures to read the substitute program from the inherent program to maintain the operation of the engine. Meanwhile, the fault information can be displayed on an instrument panel and kept constant, so that a vehicle owner can find problems in time and drive the vehicle to a repair shop, and if the ECU is modified, the aim of changing the running of the engine is fulfilled by changing a problem processing method (an originally set ECU program). The "ECU program" is actually a set of algorithms, which are stored in the memory, process the signals converted from the input device through the controller to generate corresponding command signals, and transmit the command signals from the output device. Therefore, the modification of the ECU parameters is actually to modify the algorithm; each vehicle has a unique VIN code. Each vehicle comprises a plurality of ECUs, and each ECU has a unique serial number SN code; each ECU comprises a plurality of main chips, each main chip has a unique chip ID, and the chip ID is stored in a section of non-modifiable space inside the chip and has uniqueness; the automobile fingerprint is formed by combining the VIN code of the automobile, the SN of each ECU and the ID of each chip through a specific algorithm; the chip ID has uniqueness, and can not be modified for the second time, so that the uniqueness of the automobile fingerprint is ensured; the string of characters is unique to each vehicle, and as long as each ECU is not replaced, the string of characters generated by splicing is unchanged, so that the string of characters can be used as the unique identity identification of the vehicle, which is called as automobile fingerprint (VFP), and the automobile fingerprint is the unique identification which can not be tampered with like the fingerprint of a person; the VIN code may identify a car, but the VIN code may be easily tampered with. The automobile fingerprint is obtained by processing the ID of each main chip through a specific algorithm, and the uniqueness of the automobile fingerprint is ensured because the ID of each chip cannot be changed for the second time.
The prior automobile fingerprint safety identification system and method have the following problems: when some car owners can have a fault in a certain ECU, the corresponding ECUs are directly replaced in the second-hand market, the behavior car factories which do not need to be replaced through 4S shops cannot monitor the behavior car factories, the responsibility is not clear after the fault occurs, the fixed comparison VIN code cannot guarantee the effectiveness of detection, and the existing patent does not easily solve the problem.
Disclosure of Invention
Based on the technical problem that the validity of detection cannot be guaranteed by fixedly comparing VIN codes in the conventional automobile fingerprint safety identification system and method, the invention provides an automobile fingerprint safety identification system and method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a car fingerprint safety identification system and method, including ECU module, secure server and intellectual safe gateway, the stated intellectual safe gateway couples to ECU module through the secure server, characterized by that, there are control modules, ID collection module, VFP generation module and fingerprint comparison module on the intellectual safe gateway, the stated control module couples to ID collection module, VFP generation module and fingerprint comparison module separately, connect with uploading the module and authentication module on the stated secure server separately;
the ID collection module obtains the device ID and chip ID, i.e., ID1, ID2 … IDn,
a VFP ═ HASH (ID1, ID2, …, IDn) in the VFP generation module;
an uploading module: the device ID and the chip ID are used for uploading the collected device ID and chip ID of the ECU;
an authentication module: and comparing and authenticating the generated VFP information with the information in the database module.
As a still further scheme of the invention: the ECU modules include an engine ECU, an ECU of a BCM, an ECU of a BMS, and other ECUs.
As a still further scheme of the invention: the ID acquisition module is connected to the VFP generation module, and the VFP generation module is connected to the storage module.
As a still further scheme of the invention: the VFP generation module is used for calculating a fingerprint VFP according to the intelligent security gateway by using a specific algorithm.
As a still further scheme of the invention: the fingerprint comparison system is characterized in that the storage module is connected with a database module, the database module is connected with a calling module, and the calling module is further connected with the fingerprint comparison module.
As a still further scheme of the invention: the database module comprises an ID database of the ECU and a car fingerprint database, the ID collection module is connected to the ID database of the ECU, and the VFP generation module is connected to the car fingerprint database.
As a still further scheme of the invention: the ECU module is provided with a microprocessor, an input interface, an analog-to-digital converter, a memory and an output interface.
The invention provides an identification method of an automobile fingerprint safety identification system, which comprises the following steps:
s1: after the vehicle is started, each ECU reports the own equipment ID and chip ID to the intelligent security gateway;
s2: the intelligent security gateway collects ID information and chip ID information of the ECU, then a specific algorithm calculates a fingerprint VFP, and input data of the fingerprint are equipment ID and chip ID of each ECU and are recorded as: ID1, ID2, …, IDn; wherein IDn is directly connected by the device ID of the nth ECU and the chip ID thereon, and is recorded as device ID + chip ID, or chip ID + device ID;
s3: storing the collected device ID and chip ID in an ID database of the ECU, outputting a VFP (HASH) (ID1, ID2, …, IDn) as a car fingerprint defined by performing a specific arithmetic operation with ID1, ID2 … IDn as input, and using the value as the VFP; thus, ID1, ID2, …, IDn, and VFP are unchanged; where one or more changes, the VFP also changes;
s4: the security server safely stores the VFP of each vehicle into a vehicle fingerprint database according to the VIN code, and the gateway collects the chip ID of the main chip from each ECU and encrypts the chip ID to obtain the value Ekpub1(chip _ ID); each ECU sends Ekpub1(chip _ ID) to the gateway, and the gateway decrypts Ekpri1(chip _ ID) after receiving the Ekpub1(chip _ ID) to obtain chip idx; when the automobile is produced and is off line, the gateway sends VIN + HASH (chip id1+ chip id2. + chip idn), namely VFP to the security server; the safety server safely stores the VFP of each vehicle into a database according to the VIN code;
s5: the calling module is sequentially connected with the fingerprints in the automobile fingerprint database, and the calling module is used for calling the data to be compared out in advance and temporarily storing the data;
s6: the gateway collects new ID information after the automobile is started, the VIN code is compared with the VFP information in the calling module, when the automobile is started, the gateway collects Ekpub1(chip _ ID) of each ECU, then Kpriv1 is used for decrypting the Ekpub1(chip _ ID) to obtain chip idx of each ECU, and after the chip ID is collected, the gateway acquires the VFP from the security server through the VIN code; after receiving the vehicle VFP from the safety server, the gateway compares the HASH values;
s7: if the fingerprints are matched, the authentication is passed; if the fingerprints are not matched, whether the ECU is tampered is further judged, after the VFP is found to be changed, the intelligent security gateway needs to report the collected ID information of the ECU to the security server, the security server compares the data taken by the security server with the ID information stored in the database in advance, and specific ECU ID information is confirmed to be changed.
The invention has the beneficial effects that:
1. by arranging the fingerprint comparison module, each time the automobile is started, the intelligent security gateway collects the ID of each ECU and then decrypts the ID, so that the chip ID of each ECU is obtained, after the chip ID is collected, the intelligent security gateway sends the VIN and the obtained chip ID cluster to the security server, the security server compares the received chip ID cluster of the automobile with the VFP value in the database through the VIN code, and the identification result is more reliable through comparison of the uncontrollable fingerprint flexibly generated after the automobile is started and the fingerprint information in the database;
2. by arranging the uploading module and the authentication module, the ID collection module collects the equipment ID and the chip ID of each ECU and transmits the collected equipment ID and the chip ID to the uploading module, the uploading module integrates the collected equipment ID and the chip ID and uploads the integrated equipment ID and chip ID to the intelligent security gateway in a unified manner, when authentication is needed, the intelligent security gateway reports the collected ID information of the ECUs to the security server, the security server compares the data with the ID information stored in the database in advance after taking the data, and confirms which specific ECU ID information changes, so that the uploading of the information and the authentication are more efficiently corresponding;
3. through setting up the calling module, the security server compares the received VIN and new chipID cluster of obtaining the vehicle with the information in the database through the VIN code, and the application calls the module and calls the data to be compared out in advance and temporarily store, follows the principle of comparing nearby when the information is compared to reach the most efficient comparison, has saved the time that the module consumed of fingerprint comparison.
Drawings
FIG. 1 is a block diagram of an overall structure of a fingerprint security recognition system for a vehicle according to the present invention;
FIG. 2 is a block diagram of a fingerprint comparison module of the fingerprint security identification system of the present invention;
FIG. 3 is a schematic diagram of a database module structure of a car fingerprint security identification system according to the present invention;
FIG. 4 is a schematic structural diagram of an ECU module of the system and method for automobile fingerprint security identification according to the present invention;
fig. 5 is a flowchart of an identification method of the automobile fingerprint security identification system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, a system and method for automobile fingerprint security identification includes an ECU module, a security server, and an intelligent security gateway, the intelligent security gateway and the ECU module are connected through the security server, it is characterized in that the intelligent security gateway is provided with a control module, an ID collection module, a VFP generation module and a fingerprint comparison module, the control module is respectively connected with the ID collection module, the VFP generation module and the fingerprint comparison module, the security server is respectively connected with an uploading module and an authentication module, the intelligent security gateway sends the VIN and the obtained chip ID cluster to the security server, the security server receives the chip ID cluster of the obtained vehicle, the VIN code is compared with the VFP value in the database, and the identification result is more reliable through comparison between the uncontrollable fingerprint flexibly generated after the automobile is started and the fingerprint information in the database;
an ID collection module: the device ID and chip ID are obtained, i.e., ID1, ID2 … IDn,
a VFP generation module: VFP ═ HASH (ID1, ID2, …, IDn);
an uploading module: the device ID and the chip ID are used for uploading the collected device ID and chip ID of the ECU;
an authentication module: the intelligent safety gateway is used for carrying generated VFP information and comparing and authenticating the information in the database module, the collected equipment ID and chip ID are integrated by the uploading module and are uploaded to the intelligent safety gateway in a unified mode, when authentication is needed, the intelligent safety gateway reports the collected ID information of the ECU to the safety server, the safety server compares the ID information with the ID information stored in the database in advance after taking the data, the specific change of the ID information of the ECU is confirmed, and the uploading of the information and the authentication are guaranteed to correspond more efficiently.
In the optimization scheme of the invention, the ECU module comprises an engine ECU, an ECU of a BCM, an ECU of a BMS and other ECUs.
According to the optimization scheme, the ID acquisition module is connected to the VFP generation module, and the VFP generation module is connected to the storage module.
In the optimization scheme of the invention, the VFP generation module is used for calculating the fingerprint VFP by using a specific algorithm according to the intelligent security gateway.
According to the optimization scheme, the storage module is connected with the database module, the database module is connected with the calling module, and the calling module is further connected with the fingerprint comparison module.
According to the optimization scheme, the database module comprises an ID database of the ECU and an automobile fingerprint database, the ID collection module is connected to the ID database of the ECU, and the VFP generation module is connected to the automobile fingerprint database.
According to the optimization scheme, the ECU module is provided with a microprocessor, an input interface, an analog-to-digital converter, a memory and an output interface.
The invention provides an identification method of an automobile fingerprint safety identification system, which comprises the following steps:
s1: after the vehicle is started, each ECU reports the own equipment ID and chip ID to the intelligent security gateway;
s2: the intelligent security gateway collects ID information and chip ID information of the ECU, and then calculates a fingerprint VFP through a specific algorithm;
the input data of the fingerprint is the device ID and the chip ID of each ECU, which are respectively recorded as: ID1, ID2, …, IDn; wherein IDn is directly connected by the device ID of the nth ECU and the chip ID thereon, i.e., device ID + chip ID, or chip ID + device ID;
s3: storing the collected device ID and chip ID in an ID database of the ECU;
a car fingerprint, i.e., a car fingerprint, is defined as having ID1 and ID2 … IDn as inputs, and performing a specific arithmetic operation using the value as VFP; thus, ID1, ID2, …, IDn, and VFP are unchanged; where one or more changes occur, the VFP also changes.
S4: the safety server safely stores the VFP of each vehicle into a vehicle fingerprint database according to the VIN code;
the gateway collects the encrypted value of the chip ID of the master chip from each ECU as Ekpub1(chip _ ID); each ECU sends Ekpub1(chip _ ID) to the gateway, and the gateway decrypts Ekpri1(chip _ ID) after receiving the Ekpub1(chip _ ID) to obtain chip idx; when the automobile is produced off line, the gateway sends VIN + HASH (chip id1+ chip id2. + chip idn), namely VFP, to the security server; the safety server safely stores the VFP of each vehicle into a database according to the VIN code;
s5: the calling module sequentially contacts the fingerprints in the automobile fingerprint database;
calling data to be compared out in advance by using a calling module for temporary storage, and comparing information according to the principle of comparison nearby so as to achieve the most efficient comparison;
s6: after the automobile is started, the gateway collects new ID information and compares the ID information with VFP information in the calling module through the VIN code;
each time the automobile is started, the gateway collects the Ekpub1(chip _ ID) of each ECU, then decrypts the Ekpub1(chip _ ID) by using Kpriv1 to obtain the chip idx of each ECU, and after the collection of the chip ID is completed, the gateway acquires the VFP from the security server through the VIN code; after receiving the vehicle VFP from the safety server, the gateway compares the HASH values;
s7: if the fingerprints are matched, the authentication is passed; if the fingerprints are not matched, further judging whether the ECU is tampered;
when the VFP is found to be changed, the intelligent security gateway needs to report the collected ID information of the ECU to a security server, the security server compares the data obtained by the security server with the ID information stored in a database in advance, and the specific change of the ID information of the ECU is confirmed;
the security server issues a corresponding security control strategy, alarms, prohibits application installation and prohibits starting;
if the ECU is maintained in a normal way to cause the ID information to be changed, the changed ID information and VFP information need to be updated into a database of the security server.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A car fingerprint safety identification system comprises an ECU module, a safety server and an intelligent safety gateway, wherein the intelligent safety gateway is connected with the ECU module through the safety server;
the ID collection module obtains the device ID and chip ID, i.e., ID1, ID2 … IDn,
a VFP ═ HASH (ID1, ID2, …, IDn) in the VFP generation module;
an uploading module: the device ID and the chip ID are used for uploading the collected device ID and chip ID of the ECU;
an authentication module: and comparing and authenticating the generated VFP information with the information in the database module.
2. The automobile fingerprint security recognition system of claim 1, wherein the ECU module comprises an engine ECU, an ECU of a BCM, an ECU of a BMS, and other ECUs.
3. The automobile fingerprint security identification system of claim 1, wherein the ID collection module is connected to the VFP generation module, and the VFP generation module is connected to the storage module.
4. The automobile fingerprint security identification system of claim 3, wherein the VFP generation module is configured to calculate a VFP according to a specific algorithm by using an intelligent security gateway.
5. The automobile fingerprint safety identification system according to claim 3, wherein the storage module is connected with a database module, the database module is connected with a calling module, and the calling module is further connected with the fingerprint comparison module.
6. The automobile fingerprint safety identification system according to claim 5, wherein the database module comprises an ID database of the ECU and an automobile fingerprint database, the ID collection module is connected to the ID database of the ECU, and the VFP generation module is connected to the automobile fingerprint database.
7. The automobile fingerprint security identification system of claim 1, wherein the ECU module is provided with a microprocessor, an input interface, an analog-to-digital converter, a memory and an output interface.
8. An identification method of an automobile fingerprint safety identification system is characterized by comprising the following steps:
s1: after the vehicle is started, each ECU reports the own equipment ID and chip ID to the intelligent security gateway;
s2: the intelligent security gateway collects ID information and chip ID information of the ECU, then a specific algorithm calculates a fingerprint VFP, and input data of the fingerprint are equipment ID and chip ID of each ECU and are recorded as: ID1, ID2, …, IDn; wherein IDn is directly connected by the device ID of the nth ECU and the chip ID thereon, and is recorded as device ID + chip ID, or chip ID + device ID;
s3: storing the collected device ID and chip ID in an ID database of the ECU, outputting a VFP (HASH) (ID1, ID2, …, IDn) as a car fingerprint defined by performing a specific arithmetic operation with ID1, ID2 … IDn as input, and using the value as the VFP; thus, ID1, ID2, …, IDn, and VFP are unchanged; where one or more changes, the VFP also changes;
s4: the security server safely stores the VFP of each vehicle into a vehicle fingerprint database according to the VIN code, and the gateway collects the chip ID of the main chip from each ECU and encrypts the chip ID to obtain the value Ekpub1(chip _ ID); each ECU sends Ekpub1(chip _ ID) to the gateway, and the gateway decrypts Ekpri1(chip _ ID) after receiving the Ekpub1(chip _ ID) to obtain chip idx; when the automobile is produced and is off line, the gateway sends VIN + HASH (chip id1+ chip id2. + chip idn), namely VFP to the security server; the safety server safely stores the VFP of each vehicle into a database according to the VIN code;
s5: the calling module is sequentially connected with the fingerprints in the automobile fingerprint database, and the calling module is used for calling the data to be compared out in advance and temporarily storing the data;
s6: the gateway collects new ID information after the automobile is started, the VIN code is compared with the VFP information in the calling module, when the automobile is started, the gateway collects Ekpub1(chip _ ID) of each ECU, then Kpriv1 is used for decrypting the Ekpub1(chip _ ID) to obtain chip idx of each ECU, and after the chip ID is collected, the gateway acquires the VFP from the security server through the VIN code; after receiving the vehicle VFP from the safety server, the gateway compares the HASH values;
s7: if the fingerprints are matched, the authentication is passed; if the fingerprints are not matched, whether the ECU is tampered is further judged, after the VFP is found to be changed, the intelligent security gateway needs to report the collected ID information of the ECU to the security server, the security server compares the data taken by the security server with the ID information stored in the database in advance, and specific ECU ID information is confirmed to be changed.
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Application publication date: 20211126 |