CN102662692A - Method and system for updating application program in electronic control unit - Google Patents
Method and system for updating application program in electronic control unit Download PDFInfo
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- CN102662692A CN102662692A CN2012100716493A CN201210071649A CN102662692A CN 102662692 A CN102662692 A CN 102662692A CN 2012100716493 A CN2012100716493 A CN 2012100716493A CN 201210071649 A CN201210071649 A CN 201210071649A CN 102662692 A CN102662692 A CN 102662692A
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Abstract
The invention provides a method and a system for updating an application program in an electronic control unit. The system comprises a remote server, reprogramming equipment and an electronic control unit network, and the method comprises the steps that the reprogramming equipment sends an identity information request to the electronic control unit; the electronic control unit conducts encryption on the self identity information and sends the encrypted identity information to the reprogramming equipment; the reprogramming equipment sends an update file request to the remote server; the remote server generates an encrypted update file according to the application program, and sends the encrypted update file to the reprogramming equipment, and the reprogramming equipment sends the encrypted update file data to the electronic control unit; and the electronic control unit decrypts the encrypted update file data and writes the data of the application program to a storage. According to the method and the system for updating the application program, encryption processing is conducted to the update file containing the application program, thereby ensuring the security of the update file, namely ensuring the security of the application program.
Description
Technical field
The present invention relates to the renewal technology field of the application program of vehicle control device, relate in particular to the update method and the system of application program in a kind of electronic control unit.
Background technology
A plurality of electronic control units are installed on motor vehicles usually; In order to carry out different functions; Between these Electronic Control usually through the In-vehicle networking bus system for example CAN bus or LIN system link together, in order to realize co-ordination and the information sharing between them.
Electronic control unit generally includes internal processor and external unit, and the application program of electronic control unit is deposited in the internal storage of processor, perhaps in the chip external memory of external unit.Owing to many reasons; For example; There is defective in the application program of electronic control unit, perhaps need increase new function, need upgrade and revises being stored in application program in the electronic control unit; Just need application programs to carry out reprogrammed in this case, promptly the application program of electronic control unit is upgraded.
In the prior art; Remote server storage has the application program of producer, and reprogrammed equipment is downloaded the application program that producer provides with remote server, and with application storage in reprogrammed equipment or external memory device; When the application program in the electronic control unit is upgraded; Reprogrammed equipment application programs is resolved, owing to have address information in the application program, so reprogrammed equipment resolves to application program address and application data with application program; Then these information are sent to electronic control unit, electronic control unit according to the application program address with in the corresponding application program writing data into memory.Yet; Application program address and application data might be intercepted and captured by the disabled user in the process that is sent to electronic control unit by reprogrammed equipment; And carry out decompiling, its content possibly be cracked, promptly; There is security risk in application program in the process of transmission, so the update method of application program can't guarantee the safety of application program in the prior art.
Summary of the invention
In view of this, the invention provides the update method and the system of application program in a kind of electronic control unit, in order to solve the problem that existing update method can't guarantee the safety of application program in the electronic control unit.Its technical scheme is following:
The update method of application program in a kind of electronic control unit; Be applied to include: the update system of remote server, reprogrammed equipment and electronic control unit network; Said electronic control unit has first key and second key; Said remote server has first PKI and first private key, and said reprogrammed equipment has second PKI and second private key;
This method comprises:
A: said reprogrammed equipment sends the identity information solicited message to said electronic control unit;
B: said electronic control unit utilizes said first key that the identity information of oneself is encrypted, and the identity information after will encrypting then sends to said reprogrammed equipment;
C: said reprogrammed equipment sends the updating file request to said remote server;
D: said remote server generates updating file according to application program; Utilize said second key, second PKI and first private key then; According to predefined encryption rule said updating file is encrypted, and the updating file of encrypting is sent to said reprogrammed equipment;
E: said reprogrammed equipment receives the updating file of said encryption; Regular according to predefined first deciphering, utilize said first PKI and second private key that the updating file of said encryption is carried out deciphering for the first time and the updating file of deciphering is for the first time sent to said electronic control unit;
F: said electronic control unit receives the updating file of the said deciphering first time and deciphers rule according to predefined second; Updating file after utilizing said second key to the said deciphering first time carries out the deciphering second time, and in the updating file write store after will deciphering;
G: finish to upgrade.
Said updating file comprises: updating file head and updating file data, said updating file data comprise: application program head and application data.
Said second key is the random key that said electronic control unit produces;
Said remote server generates updating file according to application program, utilizes said second key, second PKI and first private key then, according to predefined encryption rule said updating file is encrypted to be specially:
Said remote server utilizes second PKI of said reprogrammed equipment that said updating file head is encrypted;
Said remote server utilizes the said random key of said electronic control unit that said updating file data are encrypted;
Said remote server utilizes own said first private key that the finger print information of the updating file data of the updating file head of said encryption and said encryption is encrypted to generate and signs.
Said step e is specially:
Said reprogrammed equipment receives the updating file of said encryption, the signature regular according to predefined first deciphering, that first PKI that utilize said remote server is deciphered the updating file of said encryption;
Whether the signature of the updating file after the checking deciphering is effective, if second private key of then said reprogrammed equipment utilization oneself is deciphered the file header of the updating file of said encryption, and the updating file data of said encryption are sent to said electronic control unit; If deny, then execution in step G;
Said step F is specially:
Said electronic control unit receives the updating file data of said encryption, according to the predefined second deciphering rule, utilize said random key decipher the updating file data of said encryption and according to the application program head in the updating file data after the said deciphering with in the corresponding application program writing data into memory.
Also comprise before the said steps A:
H: said reprogrammed equipment sends authentication request information to said electronic control unit;
I: said electronic control unit carries out authentication through secure access service to said reprogrammed equipment, and the authentication result is sent to said reprogrammed equipment;
J: said reprogrammed equipment judges whether said authentication result is effective, if if execution in step A then is otherwise execution in step G.
Also comprise after the said step B, before the said step C:
K: the identity information that the said electronic control unit that said reprogrammed equipment will receive is encrypted and oneself identity information packing, encryption form authentication information, then said authentication information are sent to said remote server;
L: said remote server receives said authentication information and verifies whether it is effective, if then generate the effective identity verification result; And the effective identity verification result sent to said reprogrammed equipment; Execution in step C then, if not, execution in step G then.
Said step K comprises:
K1: identity information that the said electronic control unit that said reprogrammed equipment will receive is encrypted and the identity information packing of oneself generate the first information;
K2: first PKI of the said remote server of said reprogrammed equipment utilization is encrypted the said first information, generates second information;
K3: said reprogrammed equipment utilization hashing algorithm calculates the finger print information of said second information, utilizes said second private key that said finger print information is encrypted then, generates digital signature;
K4: said reprogrammed equipment is attached to said second information back with said digital signature, generates authentication information;
K5: said reprogrammed equipment sends to said remote server with said authentication information.
Said step L comprises:
L1: said remote server receives said authentication information;
L2: said remote server utilizes second PKI of said reprogrammed equipment to decipher the said digital signature of said authentication information;
L3: whether the said digital signature of said remote server verification is effective; If; Said first private key of then said remote server utilization oneself is deciphered said authentication information, obtains the identity information that said electronic control unit is encrypted, then execution in step L4; If deny, then execution in step G;
L4: the identity information that said remote server utilizes the said electronic control unit of said first secret key decryption of said electronic control unit to encrypt;
L5: whether the identity information of the said electronic control unit after the said remote server verification deciphering is effective, if then said remote server generates the effective identity verification result, and said effective identity verification result sent to said reprogrammed equipment; If deny, then execution in step G.
Said electronic control unit is the electronic control unit in the similar electronic control unit group, and said second key is the key of said similar electronic control unit group;
Said remote server generates updating file according to application program, utilizes said second key, second PKI and first private key then, according to predefined encryption rule said updating file is encrypted to be specially:
Said remote server utilizes second PKI of said reprogrammed equipment that said updating file head is encrypted;
Said remote server utilizes the key of said similar electronic control unit group that said updating file data are encrypted;
Said remote server utilizes own said first private key that the finger print information of the updating file data of the updating file head of said encryption and said encryption is encrypted to generate and signs.
The update system of application program in a kind of electronic control unit comprises: remote server, reprogrammed equipment and electronic control unit network;
Said electronic control unit has first key and second key, and said remote server has first PKI and first private key, and said reprogrammed equipment has second PKI and second private key;
Said reprogrammed equipment is used for sending the identity information solicited message to said electronic control unit;
Said electronic control unit is used to utilize said first key that the identity information of oneself is encrypted, and the identity information after will encrypting then sends to said reprogrammed equipment;
Said reprogrammed equipment also is used for sending the updating file request to said remote server;
Said remote server; Be used for generating updating file according to application program; According to said second PKI, first private key and second key, said updating file is encrypted then, and the updating file of encrypting is sent to reprogrammed equipment according to predefined encryption rule;
Said reprogrammed equipment; Also be used to receive the updating file of said encryption; Regular according to predefined first deciphering, utilize said first PKI and second private key that the updating file of said encryption is carried out deciphering for the first time and the updating file of deciphering is for the first time sent to said electronic control unit;
Said electronic control unit; Also be used to receive the updating file of the said deciphering first time and decipher rule according to predefined second; Updating file after utilizing said second key to the said deciphering first time carries out the deciphering second time, and in the updating file write store after will deciphering.
In the electronic control unit provided by the invention in the update method and system of application program; Because the updating file that includes application data has been carried out encryption; Therefore guarantee the safety of updating file in transmission course, promptly guaranteed the safety of application program in the electronic control unit to be updated.In addition, remote server counterweight programming device and electronic control unit carry out authentication and make that the security of application program is higher in the electronic control unit to be updated.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is embodiments of the invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to the accompanying drawing that provides.
The process flow diagram of the application program update method that Fig. 1 provides for the embodiment of the invention one;
The structural representation of the updating file that Fig. 2 provides for the embodiment of the invention one;
The structural representation of the updating file of the encryption that Fig. 3 provides for the embodiment of the invention one;
The process flow diagram of the update method of the application program that Fig. 4 provides for the embodiment of the invention two;
The process flow diagram of the update method of the application program that Fig. 5 provides for the embodiment of the invention three;
The structural representation of the update system of the application program that Fig. 6 provides for the embodiment of the invention four.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Embodiment one
The embodiment of the invention one provides a kind of update method of application program, is applied to include: the update system of remote server, reprogrammed equipment and electronic control unit network.Electronic control unit has the first key K ey1 and the second key K ey2; Wherein, The first key K ey1 is solidificated in the internal storage of electronic control unit; Reprogrammed equipment and remote server have pair of secret keys separately, suppose that remote server has the first PKI PublicKey1 and the first private key PrivateKey1, and reprogrammed equipment has the second PKI PublicKey2 and the second private key PrivateKey2.In the present embodiment, electronic control unit is an electronic control unit in the electronic control unit network of application program update system.The process flow diagram of the method that Fig. 1 provides for the embodiment of the invention one, this method comprises:
S101: reprogrammed equipment sends authentication request information T101 to electronic control unit.
S102: electronic control unit carries out authentication through secure access service counterweight programming device, and with authentication as a result T102 send to reprogrammed equipment.
S103: reprogrammed equipment is judged authentication, and whether T102 is effective as a result, if then reprogrammed equipment sends identity information solicited message T103, execution in step S104 then to electronic control unit; If, then do not finish more new technological process.
S104: electronic control unit utilizes the first key K ey1 that the identity information of oneself is encrypted, and the identity information T104 after will encrypting then sends to reprogrammed equipment.
Wherein, the identity information of electronic control unit includes but not limited to: identity ID, accidental validation sign indicating number and random key.Random key is that electronic control unit produces when receiving the identity information solicited message T103 that reprogrammed equipment sends at random.In the present embodiment, the second key K ey2 is the random key in the identity information of electronic control unit.
S105: reprogrammed equipment sends updating file solicited message T105 to remote server.
S106: remote server generates the updating file T106 that encrypts, and the updating file T106 that encrypts is sent to reprogrammed equipment.In the present embodiment, remote server generates a updating file for each electronic control unit.
The structural representation of the updating file that Fig. 2 provides for present embodiment, the updating file among Fig. 2 comprises: updating file head F1 and updating file data F2.Wherein, the information of updating file head F1 comprises: application version, first application program length, updating file data length, electronic control unit ID mask and verification and etc. information.Updating file data F2 carries out random division by the remote server application programs to form N part; The dividing method of each reprogrammed application programs is different; All be made up of an application program F21 and application program F22 data for every part, an application program F21 has described address, length and verification and the information of application data F22.In the present embodiment, among the step S106, remote server generates the updating file T106 that encrypts and is specially:
S1061: remote server utilizes the second PKI PublicKey2 of reprogrammed equipment that updating file head F1 is encrypted.
S1062: remote server utilizes the second key K ey2 of electronic control unit that updating file data F2 is encrypted.
S1063: the first private key PrivateKey1 of remote server utilization oneself encrypts the signature of generation updating file to the finger print information of the updating file data of the updating file head encrypted and encryption.
The updating file head of encryption, the updating file data of encryption and signature are formed the updating file of encrypting, and Fig. 3 is the structural representation of the updating file of encryption.
S107: the signature of the updating file T106 that the reprogrammed device authentication is encrypted, the updating file head of the second private key PrivateKey2 enabling decryption of encrypted of utilization oneself sends to electronic control unit with the updating file data T107 that encrypts at last then.
In the present embodiment; The content of the signature of the updating file T106 of the first PKI PublicKey1 enabling decryption of encrypted of reprogrammed equipment utilization remote server; And whether the signature of authenticating remote server is effective, if signature is effectively, and the updating file head of the second private key PrivateKey2 enabling decryption of encrypted of reprogrammed equipment utilization oneself then; The updating file data T107 that encrypts is sent to electronic control unit, then execution in step S108; If the signature of remote server is invalid, then finish more new technological process.
S108: the updating file data T107 of electronic control unit enabling decryption of encrypted; The application program F21 of updating file data according to after the deciphering is written to corresponding application program data F22 in the storer, and with the renewal of application program as a result T108 feed back to reprogrammed equipment.In the present embodiment, electronic control unit utilizes the updating file data T107 of the second key K ey2 enabling decryption of encrypted.
In the update method of the application program that the embodiment of the invention one provides; Remote server has carried out encryption to updating file; In the method that the embodiment of the invention provides; Encrypted process has guaranteed the safety in the updating file transmission course, has promptly guaranteed the safety of application program in the electronic control unit to be updated.In addition, the proof procedure of electronic control unit counterweight programming device has improved the security of application program update process.
Embodiment two
The embodiment of the invention two provides a kind of update method of application program, is applied to include the update system of remote server, reprogrammed equipment and electronic control unit network.Electronic control unit has the first key K ey1 and the second key K ey2; Wherein, The first key K ey1 is solidificated in the internal storage of electronic control unit; Reprogrammed equipment and remote server have pair of secret keys separately, suppose that remote server has the first PKI PublicKey1 and the first private key PrivateKey1, and reprogrammed equipment has the second PKI PublicKey2 and the second private key PrivateKey2.In the present embodiment, electronic control unit is an electronic control unit in the electronic control unit network of application program update system.Fig. 4 is the process flow diagram of this method, and this method comprises:
S201: reprogrammed equipment sends authentication request information T201 to electronic control unit.
S202: electronic control unit carries out authentication through secure access service counterweight programming device, and with authentication as a result T202 send to reprogrammed equipment.
S203: reprogrammed equipment is judged authentication, and whether T202 is effective as a result, if then reprogrammed equipment sends identity information solicited message T203, execution in step S204 then to electronic control unit; If, then do not finish more new technological process.
S204: electronic control unit utilizes the first key K ey1 that the identity information of oneself is encrypted, and the identity information T204 after will encrypting sends to reprogrammed equipment.
Wherein, the identity information of electronic control unit includes but not limited to: identity ID, accidental validation sign indicating number and random key.Random key is that electronic control unit produces when receiving the identity information solicited message T203 that reprogrammed equipment sends at random.In the present embodiment, the second key K ey2 is the random key in the identity information of electronic control unit.
S205: formation authentication information T205 is packed, encrypted to identity information T204 and the identity information of oneself that reprogrammed equipment is encrypted the electronic control unit that receives, then authentication information T205 sent to remote server.
In the present embodiment, step S205 specifically comprises:
S2051: reprogrammed equipment is packaged into first information Information1 with the identity information T204 of the electronic control unit encryption that receives and the identity information of oneself.
S2052: the first information Information1 after the first PKI PublicKey1 packetized of reprogrammed equipment utilization remote server encrypts, and generates the second information Information2.
S2053: reprogrammed equipment utilization hashing algorithm calculates the finger print information of the second information Information2, utilizes the second private key PrivateKey2 of oneself that finger print information is encrypted then, generates digital signature.
S2054: reprogrammed equipment is attached to the back of the second information Information2 with digital signature, generates authentication information T205.
S2055: reprogrammed equipment sends to remote server with authentication information T205.
In the present embodiment, the identity information of reprogrammed equipment includes but not limited to: the identity ID of reprogrammed equipment, version and accidental validation sign indicating number.
S206: whether remote server verification authentication information T205 effective, if, then generate effective identity verification T206 as a result, and with effective identity verification as a result T206 send to reprogrammed equipment, execution in step S207 then; If, then do not finish more new technological process.
Step S206 in the present embodiment specifically comprises:
S2061: remote server utilizes the digital signature of the second PKI PublicKey2 decryption identity authentication information T205 of reprogrammed equipment.
S2062: whether the remote server verification digital signature is effective; If certifying digital signature is effective; Then remote server utilizes the first private key PrivateKey1 decryption identity authentication information T205 of oneself, obtains the identity information T204 that electronic control unit is encrypted, then execution in step S2063; If certifying digital signature is invalid, then finish more new technological process.
S2063: the identity information T204 that remote server utilizes first key K ey1 deciphering electronic control unit to encrypt.The identity information T204 that electronic control unit is encrypted in this step decipher with step S204 in electronic control unit own identity information encryption is corresponding.
S2064: whether the identity information of the electronic control unit after the remote server verification deciphering is effective; If the checking of the identity information of electronic control unit effectively; Then remote server generates effective identity verification T206 as a result; And with effective identity verification as a result T206 send to reprogrammed equipment, execution in step S207 then; If it is invalid to verify, then finish more new technological process.
S207: reprogrammed equipment sends updating file solicited message T207 to remote server.
S208: remote server generates the updating file T208 that encrypts, and the updating file T208 that encrypts is sent to reprogrammed equipment.
Updating file in the present embodiment is identical with updating file structure among the embodiment one, and the updating file structure of the encryption among the updating file of the encryption in the present embodiment and the embodiment one is identical, does not do at this and gives unnecessary details.
In the present embodiment, step S208 is specially:
S2081: remote server utilizes the second PKI PublicKey2 of reprogrammed equipment that updating file head F1 is encrypted.
S2082: remote server utilizes the second key K ey2 of electronic control unit that updating file data F2 is encrypted.
S2082: the first private key PrivateKey1 of remote server utilization oneself encrypts the signature of generation updating file to the finger print information of the updating file data of the updating file head encrypted and encryption.
S209: the signature of the updating file T208 that the reprogrammed device authentication is encrypted, the updating file head of the updating file T208 of enabling decryption of encrypted then, the last updating file data T209 that just encrypts sends to electronic control unit.
The content of the signature of the updating file T208 of the PKI PublicKey1 enabling decryption of encrypted of reprogrammed equipment utilization remote server; And whether the signature of checking updating file T208 is effective; If signature effectively; Then the updating file head of the private key PrivateKey2 enabling decryption of encrypted of reprogrammed equipment utilization oneself sends to electronic control unit with the updating file data T209 that encrypts, then execution in step S210; Invalid if sign, then finish more new technological process.
S210: the updating file data T209 of electronic control unit enabling decryption of encrypted; The application program F21 of updating file data T209 according to after the deciphering is written to corresponding application program data F22 in the storer, and just application program renewal as a result T210 feed back to reprogrammed equipment.
In the present embodiment, electronic control unit utilizes the updating file data T209 of the second key K ey2 enabling decryption of encrypted.
In the update method of the application program that the embodiment of the invention provides, remote server has carried out encryption to updating file, and encrypted process has guaranteed the safety of updating file transmission course, has promptly guaranteed the safety of application program in the electronic control unit to be updated.In addition, the authentication of authentication, remote server counterweight programming device and the electronic control unit of electronic control unit counterweight programming device is made that the security of application program is higher in the electronic control unit to be updated.
Embodiment three
In practical application; Possibly exist need to several ten thousand in addition the similar electronic control unit of hundreds of thousands carry out the situation of application program update, if each electronic control unit is generated an independent updating file, so; The load meeting of remote server increases considerably, and upgrades consuming time longer.
In view of this; The embodiment of the invention three provides a kind of update method of application program; Be applied to include the update system of remote server, reprogrammed equipment and electronic control unit network, this method is applicable to simultaneously the renewal that the application program of the electronic control unit of a large amount of same kind is carried out.Electronic control unit has the first key K ey1 and the second key K ey2; Reprogrammed equipment and remote server have pair of secret keys separately; Suppose that remote server has the first PKI PublicKey1 and the first private key PrivateKey1, reprogrammed equipment has the second PKI PublicKey2 and the second private key PrivateKey2.
In the present embodiment, electronic control unit is an electronic control unit in the similar electronic control unit group in the electronic control unit network, and the second key K ey2 of electronic control unit is the key of the electronic control unit group of same kind.The process flow diagram of the method that Fig. 5 provides for the embodiment of the invention three, this method comprises:
S301: reprogrammed equipment sends authentication request information T301 to electronic control unit.
S302: electronic control unit carries out authentication through secure access service counterweight programming device, and with authentication as a result T302 send to reprogrammed equipment.
S303: reprogrammed equipment judges whether the authentication result is effective, if then reprogrammed equipment sends identity information solicited message T303, execution in step S304 then to electronic control unit; If, then do not finish more new technological process.
S304: electronic control unit utilizes the first key K ey1 that the identity information of oneself is encrypted, and the identity information T304 after will encrypting sends to reprogrammed equipment.
In the present embodiment, the first key K ey1 and the second key K ey2 be solidificated in electronic control unit internal storage such as among Flash or the eeprom.The identity information of electronic control unit includes but not limited to: identity ID, accidental validation sign indicating number.
S305: reprogrammed equipment sends updating file request T305 to remote server.
S306: remote server generates the updating file T306 that encrypts according to the identity ID of reprogrammed equipment and the kind of electronic control unit, and sends the updating file T306 that encrypts to reprogrammed equipment through network or external memory equipment.
Updating file in the present embodiment is identical with updating file structure among the embodiment one, and the updating file structure of the encryption among the updating file of the encryption in the present embodiment and the embodiment one is identical, does not do at this and gives unnecessary details.
In the present embodiment; Remote server utilizes the PKI PublicKey2 of reprogrammed equipment that updating file head F1 is encrypted; Utilize the key of electronic control unit group that updating file data F2 is encrypted; The first private key PrivateKey1 that utilizes oneself encrypts the signature of generation updating file to the finger print information of the updating file data of the updating file head encrypted and encryption.
S307: whether the signature of the updating file T306 that the reprogrammed device authentication is encrypted is effective, if then the updating file head of the updating file T306 of enabling decryption of encrypted sends to electronic control unit with the updating file data T307 that encrypts, then execution in step S307; If deny, then process ends.
Simultaneously; In order to realize the renewal of application program faster; Reprogrammed equipment is temporarily preserved the updating file head after the deciphering; When reprogrammed equipment upgrades the application program of another electronic control unit of the same type, can decipher, and directly the updating file data T306 of the encryption among the updating file T306 that encrypts sent to electronic control unit.
In the present embodiment; The content of the signature of the updating file T306 of the first PKI PublicKey1 enabling decryption of encrypted of reprogrammed equipment utilization remote server; And whether the signature of authenticating remote server is effective, if signature is effectively, and the updating file head of the second private key PrivateKey2 enabling decryption of encrypted of reprogrammed equipment utilization oneself then; The updating file data T307 that encrypts is sent to electronic control unit, then execution in step S308; If deny, then process ends.
S308: the updating file data T307 that electronic control unit utilizes the secret key decryption of electronic control unit group to encrypt; The application program F21 of updating file data according to after the deciphering is written to corresponding application program data F22 in the storer, and with the renewal of application program as a result T308 feed back to reprogrammed equipment.
In the update method of the application program that the embodiment of the invention three provides; Remote server is that every kind of electronic control unit generates a updating file; Promptly all electronic control units in the similar electronic control unit group are being carried out in the process of application program update; Remote server only sends a updating file to reprogrammed equipment, and reprogrammed equipment downloads to this updating file in all similar electronic control units.Simultaneously, remote server has carried out encryption to updating file, and therefore, the method that the embodiment of the invention provides had both guaranteed the safety of application program, had alleviated the pressure of remote server again, and it is consuming time to have shortened renewal simultaneously.
Embodiment four
The embodiment of the invention four also provides the update system of application program in a kind of electronic control unit, and Fig. 6 is the structural representation of this system, comprising: remote server 41, reprogrammed equipment 42 and electronic control unit network 43.Wherein, remote server 41 stores application data, also stores the identity information of electronic control unit in reprogrammed equipment 42 and the electronic control unit network 43.
Electronic control unit in the electronic control unit network 43 has the first key K ey1 and second key; Remote server 41 has the first PKI PublicKey1 and the first private key PrivateKey1, and reprogrammed equipment 42 has the second PKI PublicKey2 and the second private key PrivateKey2.
Electronic control unit in the electronic control unit network 43 is used to utilize the first key K ey1 that the identity information of oneself is encrypted, and the identity information after will encrypting then sends to reprogrammed equipment.
Electronic control unit; Also be used to receive the updating file of deciphering for the first time and decipher rule according to predefined second; Updating file after utilizing the second key K ey2 to deciphering for the first time carries out the deciphering second time, and in the updating file write store after will deciphering.
The random key that the second key K ey2 in the present embodiment can produce when receiving the identity information solicited message of reprogrammed equipment when electronic control unit also can be the key of similar electronic control unit group.
In the system that the embodiment of the invention provides, the authentication process itself that encryption process that remote server carries out updating file and counterweight programming device and electronic control unit carry out has guaranteed the safety of application program.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. the update method of application program in the electronic control unit; It is characterized in that; Be applied to include: the update system of remote server, reprogrammed equipment and electronic control unit network; Said electronic control unit has first key and second key, and said remote server has first PKI and first private key, and said reprogrammed equipment has second PKI and second private key;
This method comprises:
A: said reprogrammed equipment sends the identity information solicited message to said electronic control unit;
B: said electronic control unit utilizes said first key that the identity information of oneself is encrypted, and the identity information after will encrypting then sends to said reprogrammed equipment;
C: said reprogrammed equipment sends the updating file request to said remote server;
D: said remote server generates updating file according to application program; Utilize said second key, second PKI and first private key then; According to predefined encryption rule said updating file is encrypted, and the updating file of encrypting is sent to said reprogrammed equipment;
E: said reprogrammed equipment receives the updating file of said encryption; Regular according to predefined first deciphering, utilize said first PKI and second private key that the updating file of said encryption is carried out deciphering for the first time and the updating file of deciphering is for the first time sent to said electronic control unit;
F: said electronic control unit receives the updating file of the said deciphering first time and deciphers rule according to predefined second; Updating file after utilizing said second key to the said deciphering first time carries out the deciphering second time, and in the updating file write store after will deciphering;
G: finish to upgrade.
2. method according to claim 1 is characterized in that, said updating file comprises: updating file head and updating file data, said updating file data comprise: application program head and application data.
3. method according to claim 2 is characterized in that,
Said second key is the random key that said electronic control unit produces;
Said remote server generates updating file according to application program, utilizes said second key, second PKI and first private key then, according to predefined encryption rule said updating file is encrypted to be specially:
Said remote server utilizes second PKI of said reprogrammed equipment that said updating file head is encrypted;
Said remote server utilizes the said random key of said electronic control unit that said updating file data are encrypted;
Said remote server utilizes own said first private key that the finger print information of the updating file data of the updating file head of said encryption and said encryption is encrypted to generate and signs.
4. method according to claim 3 is characterized in that, said step e is specially:
Said reprogrammed equipment receives the updating file of said encryption, the signature regular according to predefined first deciphering, that first PKI that utilize said remote server is deciphered the updating file of said encryption;
Whether the signature of the updating file after the checking deciphering is effective, if second private key of then said reprogrammed equipment utilization oneself is deciphered the file header of the updating file of said encryption, and the updating file data of said encryption are sent to said electronic control unit; If deny, then execution in step G;
Said step F is specially:
Said electronic control unit receives the updating file data of said encryption, according to the predefined second deciphering rule, utilize said random key decipher the updating file data of said encryption and according to the application program head in the updating file data after the said deciphering with in the corresponding application program writing data into memory.
5. according to claim 1 or 4 described methods, it is characterized in that, also comprise before the said steps A:
H: said reprogrammed equipment sends authentication request information to said electronic control unit;
I: said electronic control unit carries out authentication through secure access service to said reprogrammed equipment, and the authentication result is sent to said reprogrammed equipment;
J: said reprogrammed equipment judges whether said authentication result is effective, if if execution in step A then is otherwise execution in step G.
6. method according to claim 5 is characterized in that, also comprises after the said step B, before the said step C:
K: the identity information that the said electronic control unit that said reprogrammed equipment will receive is encrypted and oneself identity information packing, encryption form authentication information, then said authentication information are sent to said remote server;
L: said remote server receives said authentication information and verifies whether it is effective, if then generate the effective identity verification result; And the effective identity verification result sent to said reprogrammed equipment; Execution in step C then, if not, execution in step G then.
7. method according to claim 6 is characterized in that, said step K comprises:
K1: identity information that the said electronic control unit that said reprogrammed equipment will receive is encrypted and the identity information packing of oneself generate the first information;
K2: first PKI of the said remote server of said reprogrammed equipment utilization is encrypted the said first information, generates second information;
K3: said reprogrammed equipment utilization hashing algorithm calculates the finger print information of said second information, utilizes said second private key that said finger print information is encrypted then, generates digital signature;
K4: said reprogrammed equipment is attached to said second information back with said digital signature, generates authentication information;
K5: said reprogrammed equipment sends to said remote server with said authentication information.
8. method according to claim 7 is characterized in that, said step L comprises:
L1: said remote server receives said authentication information;
L2: said remote server utilizes second PKI of said reprogrammed equipment to decipher the said digital signature of said authentication information;
L3: whether the said digital signature of said remote server verification is effective; If; Said first private key of then said remote server utilization oneself is deciphered said authentication information, obtains the identity information that said electronic control unit is encrypted, then execution in step L4; If deny, then execution in step G;
L4: the identity information that said remote server utilizes the said electronic control unit of said first secret key decryption of said electronic control unit to encrypt;
L5: whether the identity information of the said electronic control unit after the said remote server verification deciphering is effective, if then said remote server generates the effective identity verification result, and said effective identity verification result sent to said reprogrammed equipment; If deny, then execution in step G.
9. method according to claim 2 is characterized in that, said electronic control unit is the electronic control unit in the similar electronic control unit group, and said second key is the key of said similar electronic control unit group;
Said remote server generates updating file according to application program, utilizes said second key, second PKI and first private key then, according to predefined encryption rule said updating file is encrypted to be specially:
Said remote server utilizes second PKI of said reprogrammed equipment that said updating file head is encrypted;
Said remote server utilizes the key of said similar electronic control unit group that said updating file data are encrypted;
Said remote server utilizes own said first private key that the finger print information of the updating file data of the updating file head of said encryption and said encryption is encrypted to generate and signs.
10. the update system of application program in the electronic control unit is characterized in that, comprising: remote server, reprogrammed equipment and electronic control unit network;
Said electronic control unit has first key and second key, and said remote server has first PKI and first private key, and said reprogrammed equipment has second PKI and second private key;
Said reprogrammed equipment is used for sending the identity information solicited message to said electronic control unit;
Said electronic control unit is used to utilize said first key that the identity information of oneself is encrypted, and the identity information after will encrypting then sends to said reprogrammed equipment;
Said reprogrammed equipment also is used for sending the updating file request to said remote server;
Said remote server; Be used for generating updating file according to application program; According to said second PKI, first private key and second key, said updating file is encrypted then, and the updating file of encrypting is sent to reprogrammed equipment according to predefined encryption rule;
Said reprogrammed equipment; Also be used to receive the updating file of said encryption; Regular according to predefined first deciphering, utilize said first PKI and second private key that the updating file of said encryption is carried out deciphering for the first time and the updating file of deciphering is for the first time sent to said electronic control unit;
Said electronic control unit; Also be used to receive the updating file of the said deciphering first time and decipher rule according to predefined second; Updating file after utilizing said second key to the said deciphering first time carries out the deciphering second time, and in the updating file write store after will deciphering.
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|---|---|---|---|---|
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| JP2019057904A (en) * | 2017-09-20 | 2019-04-11 | キーランド テクノロジー カンパニー リミテッド | Method and apparatus for implementing security of broadband bus architecture in industrial internet field |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030188303A1 (en) * | 2001-03-30 | 2003-10-02 | Barman Roderick A. | Method and apparatus for reprogramming engine controllers |
| US20040137892A1 (en) * | 2003-01-06 | 2004-07-15 | Jbs Technologies, Llc | Hand-held programmer and remote diagnostic interface device |
| US20040187011A1 (en) * | 2003-03-18 | 2004-09-23 | Lee Long K. | Prevention of unauthorized software distribution |
| US20050187668A1 (en) * | 2004-02-23 | 2005-08-25 | Baumgarte Joseph W. | System or method for loading software onto a vehicle |
| CN101080693A (en) * | 2004-12-14 | 2007-11-28 | 宝马股份公司 | System for using at least one mobile terminal device in a motor vehicle with an updating device |
| US20090300365A1 (en) * | 2008-05-30 | 2009-12-03 | Robert Karmes | Vehicle Diagnostic System Security with Memory Card |
-
2012
- 2012-03-16 CN CN201210071649.3A patent/CN102662692B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030188303A1 (en) * | 2001-03-30 | 2003-10-02 | Barman Roderick A. | Method and apparatus for reprogramming engine controllers |
| US20040137892A1 (en) * | 2003-01-06 | 2004-07-15 | Jbs Technologies, Llc | Hand-held programmer and remote diagnostic interface device |
| US20040187011A1 (en) * | 2003-03-18 | 2004-09-23 | Lee Long K. | Prevention of unauthorized software distribution |
| US20050187668A1 (en) * | 2004-02-23 | 2005-08-25 | Baumgarte Joseph W. | System or method for loading software onto a vehicle |
| CN101080693A (en) * | 2004-12-14 | 2007-11-28 | 宝马股份公司 | System for using at least one mobile terminal device in a motor vehicle with an updating device |
| US20090300365A1 (en) * | 2008-05-30 | 2009-12-03 | Robert Karmes | Vehicle Diagnostic System Security with Memory Card |
Cited By (38)
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|---|---|---|---|---|
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| US9473308B2 (en) | 2012-12-27 | 2016-10-18 | Feitan Technologies Co., Ltd. | Method and system for implementing digital signature in mobile operating system |
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