CN103955664B - High-speed document scanner capable of safely decoding two-dimensional code of vehicle approval certificate and decoding method - Google Patents
High-speed document scanner capable of safely decoding two-dimensional code of vehicle approval certificate and decoding method Download PDFInfo
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- CN103955664B CN103955664B CN201410176419.2A CN201410176419A CN103955664B CN 103955664 B CN103955664 B CN 103955664B CN 201410176419 A CN201410176419 A CN 201410176419A CN 103955664 B CN103955664 B CN 103955664B
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Abstract
The invention provides a high-speed document scanner capable of safely decoding a two-dimensional code of a vehicle approval certificate. A U-type shield security module is inserted or embedded in the high-speed document scanner. The high-speed document scanner is used for collecting a two-dimensional code image. The U-type shield security module is used for converting ciphertext information into plaintext information. A decoding method includes the steps that (a) the high-speed document scanner is connected with a PC, and the U-type shield security module is connected with the high-speed document scanner; (b) the high-speed document scanner judges whether a U-type shield is legal by verifying the correctness of authentication data; (c) the high-speed document scanner collects the two-dimensional code image and obtains a decodable image through an image processing method; (d) the high-speed document scanner conducts decoding to obtain ciphertext binary data of the two-dimensional code; (e) the high-speed document scanner sends a two-dimensional code ciphertext to the U-type shield, and the U-type shield obtains the plaintext information of the two-dimensional code through a decryption algorithm. According to the high-speed document scanner and the decoding method, decoding of the two-dimensional code is conducted in the U-type shield, so that the security of the decryption algorithm and a decryption key is ensured, scanning equipment is not needed, the process is simplified, the data entry efficiency is improved, and expenses for purchasing the scanning equipment are omitted.
Description
Technical field
The present invention relates to a kind of vehicle quality certificates two-dimension code safe decoding high photographing instrument and coding/decoding method, in particular, especially
It is related to a kind of high-definition image of vehicle quality certificates Quick Response Code of utilization high photographing instrument collection and obtains two dimension by U-shield security module
The high photographing instrument and coding/decoding method of code cleartext information.
Background technology
With the release of the new edition quality certification, various places vehicle management is caned qualified by directly reading when new car is registered
Two-dimensional bar code on card carrys out collection vehicle data, solves the problems, such as that manual typing is slow and error-prone, so as to improve vehicle administration office's vehicle
The efficiency and accuracy of registration.National Traffic Management Research Institute, Ministry of Public Security is in " motor vehicle register system " software that the whole nation is unified
In increased quality certification two-dimensional bar code automatic reading function, according to the unified plan of Traffic Administration Bureau of the Ministry of Public Security, the software has been issued
Each vehicle administration office uses.
In order to prevent the forgery of vehicle quality certificates, the two-dimensional bar code on the quality certification employs the means of data encryption.At present,
The cleartext information of two-dimensional bar code only can be just obtained using the dedicated scan rifle for being loaded with decipherment algorithm.Therefore, in vehicle pipe
The desk device used is needed to include during reason institute transacting business：
Second-generation resident identification card verifies equipment, for verifying transactor's identity information；
High photographing instrument, retains for shooting image in 2 D code and customer information；
Dedicated scan rifle, for reading the two-dimensional bar code of vehicle quality certificates.
The main process that two-dimensional bar code reads is the process of an image recognition, and by camera the image letter of bar code is obtained
Breath, then obtains binary bar code information by the image procossing of computer.In vehicle quality certificates reading process, most first reading
What is obtained is the 2 D code information through encrypting, then through the process of decipherment algorithm, the final bar code information for obtaining plaintext.Mesh
Before, decipherment algorithm is stored in the processor chips of dedicated scan rifle, after the two-dimensional bar code for reading vehicle quality certificates, is solved
Close computing.
High photographing instrument is generally connected by USB port with host computer, and the image that high photographing instrument camera is photographed is through pre- place
Host computer is transferred to after reason.The Image semantic classification of high photographing instrument includes frame choosing, mirror image, rotates, cuts, changing image size, instead
Color, gray-scale map, binary map, dithering process, colour switching, Gamma correction, increase brightness, reduction brightness, increase saturation degree, reduction
Saturation degree etc., can effectively lift the quality of original image.The camera of high photographing instrument can generally achieve 5,000,000 pixels, be higher than
Scanner camera, therefore the image obtained by high photographing instrument can accurately read the information of Quick Response Code.
The principle of scanner is to obtain two-dimensional barcode image information by the camera of high-resolution, and then two-dimensional bar code is entered
Row decoding process, decryption program is solidificated in barcode scanning gun, and security is poor.High photographing instrument is a kind of image acquisition equipment, therefore, it
The image information of two-dimensional bar code can be obtained, image procossing, two-dimensional bar code decoding, decryption oprerations are then carried out, vehicle is obtained and is closed
The cleartext information of lattice card.Customer information retention can be so carried out, the acquisition of vehicle quality certificates Quick Response Code can be carried out again, so as to reality
The multiplexing of existing high photographing instrument function.
In banking, for service security on catch net, secure hardware U-shield is generally adopted.
U-shield is for protecting Web bank's client secure " SmartGuard "." U-shield " employs to use has physics to be situated between
Individual client's certificate of matter, sets up based on the personal certificate authentication system of public key PKI technologies.PKI(Public Key
Infrastructure it is) that a kind of utilization public key cryptography for following standard provides a set of safe base for the development of ecommerce
The technology and specification of plinth platform.In technical elements, customer's certificate passes through personal certificate certification and digital signature technology, to client's
Authentication is implemented in online transaction, and can sign miscellaneous service service agreement, it is ensured that transaction is unique, complete with agreement
With it is undeniable.It is a band intelligent chip, is shaped like in flash memory（That is USB flash disk）Hardware in kind, be current Web bank
A kind of highest-ranking security tool of client secure.
U-shield security module possesses very strong anti-attack ability on physical hardware, and U-shield chip employs leading in the world at present
Information security technology, hard core module adopts smart card cpu chip, internal structure by CPU and encryption logic, RAM, ROM,
EEPROM and the parts of I/O five constitute, and are a minicoms with security system.
（1）The code storage of safety：In U-shield chip, cryptographic algorithm can be loaded into U-shield core by the initialization of U-shield
Inside piece, once initialization is completed, then the hardware security module of U-shield and Chip Operating System COS can be protected inside U-shield
Information can not be by extraneous access.The command interface that all access to U-shield can only be specified by COS is operated.Therefore deposit
Cryptographic algorithm code in U-shield is safe.The full name of COS is Chip Operating System (chip operating system),
The characteristics of it is usually the smart card serviced tightened around it and develop.
（2）The key storage of safety：In internal intelligent chip, user cannot be from outside directly for the key storage of U-shield
Read, the read-write and modification to key file all must call corresponding program file to perform by the CPU inside U-shield, so as to U-shield
The outside of interface, can be read out, changes, updates and delete without any one instruction to the content of key zone, so can be with
Ensure that disabled user cannot change key using illegal program.
（3）Hardware realizes AES：The built-in CPU of U-shield or intelligent card chip, it is possible to achieve data summarization, data add solution
Close and signature various algorithms, encryption and decryption computing is carried out in U-shield, it is ensured that user key is not appeared in calculator memory.
（4）Double-key cipher system：In order to improve security, U-shield employs conbined public or double key cipher system and ensures security, in U
When shield is initialized, first cryptographic algorithm program is fired in ROM, then by the Program Generating one of generation public and private key pair
To public and private key, after public and private key is produced, public key can be exported to outside U-shield, and private key is then stored in key zone, do not allow outside
Access.When being digitally signed and during asymmetric decryption computing, every crypto-operation only can be completed in chip internal, whole
Private key can not go out U-shield medium, so as to perfect in safety to ensure the digital certificate authentication with U-shield as storage medium.
The content of the invention
Shortcoming in order to overcome above-mentioned technical problem of the invention, there is provided a kind of vehicle quality certificates two-dimension code safe decoding is high
Clap instrument and coding/decoding method.
The vehicle quality certificates two-dimension code safe decoding high photographing instrument of the present invention, claps including carrying out the high of high-definition image collection
Instrument, it is characterised in that：The high photographing instrument grafting is embedded with U-shield security module, and high photographing instrument is used for collection vehicle quality certification two dimension
The image of code, and the ciphertext binary data of Quick Response Code is obtained by the process to image；U-shield security module is used for ciphertext two
Binary data is converted into plaintext binary data, to obtain vehicle registration registration data.
High photographing instrument is used to shoot the two-dimension code pattern of vehicle quality certificates, and utilizes embedded Quick Response Code reading code method by two dimension
Code is converted into ciphertext binary data, and the decryption to Quick Response Code ciphertext data is realized in U-shield security module, is effectively guaranteed
The security of decipherment algorithm and decruption key.Due to the corresponding information of vehicles of Quick Response Code can be obtained using high photographing instrument, it is to avoid
The use of two-dimensional code scanning rifle, simplifies collecting vehicle information step, has saved cost.
The vehicle quality certificates two-dimension code safe decoding high photographing instrument of the present invention, the high photographing instrument is connected with carries out data storage
PC, U-shield security module sends the plaintext binary data after conversion to PC.
The vehicle quality certificates two-dimension code safe of the present invention decodes the coding/decoding method of high photographing instrument, it is characterised in that including following
Step：A). the connection of equipment, high photographing instrument is connected with the PORT COM of PC, to realize the number between PC and high photographing instrument
According to transmission；Initialized U-shield security module is connected with grafting or embedded form with high photographing instrument, to realize high photographing instrument and U
Data transfer between shield module；B). identification of equipment validity, the certification that high photographing instrument is sent by checking U-shield security module
Whether the correctness of data is legal to judge connected U-shield security module；C). the collection and process of image in 2 D code, height is clapped
The original image of instrument collection vehicle quality certification Quick Response Code, and decodable Quick Response Code is obtained by image processing method clearly scheme
Picture；D). the acquisition of Quick Response Code ciphertext, image in 2 D code of the high photographing instrument after to process is decoded, and obtains the close of Quick Response Code
Literary binary data；E). the acquisition of Quick Response Code plaintext, high photographing instrument sends the ciphertext binary data of Quick Response Code to U-shield safety
Module, U-shield security module is decrypted by decipherment algorithm to ciphertext binary data, obtains the plaintext binary number of Quick Response Code
According to, and will be stored in plaintext binary data transmission to PC.
The vehicle quality certificates two-dimension code safe of the present invention decodes the coding/decoding method of high photographing instrument, U-shield security module in step a)
Initialization realized by following steps：A-1). loading algorithm and key, load vehicle quality certificates in U-shield security module
The decipherment algorithm of Quick Response Code, the master key of decruption key and U-shield security module and certification key, if a loading is lost
Lose, then provide the advisory alarm of loading error；A-2). input and acquisition information, it is input into encryption factor in U-shield security module
Enfac and authorization code PIN, and obtain the unique identifier UID of U-shield security module；A-3). mask key is generated, is pacified using U-shield
The unique identifier UID and authorization code PIN of full module generates mask key；A-4). decruption key is encrypted, will be added first
Close factor Enfac is filled in behind U-shield security module master key, generates temporary key；Then using temporary key to decryption
Key is encrypted, and the decruption key after encryption is stored in U-shield security module；A-5). the encryption of encryption factor, using covering
The code key pair encryption factor is encrypted, the encryption factor after being encrypted, so that encryption factor becomes encryption from exposed state
State；A-6). information is loaded into into high photographing instrument, authorization code PIN, certification key and encrypted encryption factor are loaded into into high photographing instrument
In, complete the initialization of U-shield security module.Wherein, the initialization of U-shield security module is realized in production link.
The vehicle quality certificates two-dimension code safe of the present invention decodes the coding/decoding method of high photographing instrument, Quick Response Code plaintext in step e)
Acquisition is realized by following steps：E-1). Quick Response Code ciphertext is sent, high photographing instrument to U-shield security module sends the close of Quick Response Code
Literary binary data, so that U-shield security module is decrypted to the ciphertext of Quick Response Code；E-2). send decryption data, high photographing instrument
Authorization code PIN and the encryption factor encrypted are sent to U-shield security module；E-3). mask key is generated, U-shield security module is first
The unique identifier UID of itself is first obtained, recycles UID to generate the mask of encryption factor Enfac with the authorization code PIN for receiving
Key；E-4). encryption factor is obtained, reduction is carried out with the encryption factor after mask key pair encryption and is obtained encryption factor Enfac；
E-5). encrypted decruption key is read, U-shield security module reads encrypted decruption key in initialization procedure；e-7).
Decruption key is obtained, encryption factor is filled in behind U-shield master key, generate temporary key, added to being in using temporary key
The decruption key of close state is decrypted, and obtains decruption key；E-8). Quick Response Code is obtained in plain text, using decruption key to ciphertext
Binary data is decrypted, and obtains plaintext binary data, and plaintext binary data is uploaded to into PC.
The vehicle quality certificates two-dimension code safe of the present invention decodes the coding/decoding method of high photographing instrument, and the equipment described in step b) is legal
Property certification is realized by following steps：B-1). checking request is sent, high photographing instrument to U-shield security module sends RANDOM NUMBER request,
To ask to be mutually authenticated；B-2). passback random number, U-shield security module produces random number and sends it to high photographing instrument；b-3).
Authentication data being produced, U-shield security module is by step b-2) random number and the certification key of itself storage that produce carry out RSA fortune
Calculate, and the result that computing is obtained sends high photographing instrument to as authentication data；B-4). judge whether operation result is identical, height is clapped
Instrument carries out RSA operation using the random number for receiving with the certification key of itself storage, and judges itself operation result and U-shield
Whether the authentication data of security module transmission is identical, if identical, then it is assumed that U-shield security module is legal；If it is not the same, then recognizing
Illegal, the authentication failed for U-shield security module.
The vehicle quality certificates two-dimension code safe of the present invention decodes the coding/decoding method of high photographing instrument, the two dimension in step c) to obtaining
The processing method of code image includes frame choosing, mirror image, rotates, cuts, changing image size, inverse, gray-scale map, binary map, shake
Process, colour switching, Gamma correction, increase saturation degree, reduction saturation degree, increase brightness and/or reduction brightness processed.
The vehicle quality certificates two-dimension code safe of the present invention decodes the coding/decoding method of high photographing instrument, high photographing instrument and PC in step a)
It is connected by USB port；U-shield security module is connected with high photographing instrument also by USB port.
The invention has the beneficial effects as follows：The vehicle quality certificates two-dimension code safe decoding high photographing instrument of the present invention and coding/decoding method,
By the high-definition image of high photographing instrument collection vehicle quality certification Quick Response Code and decode, obtain the ciphertext binary data of Quick Response Code；Profit
With decruption key and decipherment algorithm the ciphertext of Quick Response Code is decrypted in U-shield security module, obtains the plaintext two of Quick Response Code
Binary data, realizes the acquisition of vehicle registration registration data.Because the decryption of data is carried out in U-shield security module
, the security of decipherment algorithm and decruption key is effectively guaranteed, while avoiding existing vehicle, immediately two-dimensional code scanning sets
Standby use, not only simplify flow process, improves data inputting efficiency, and also save the spending of buying scanning device.
Due to carrying out data deciphering using the U-shield security module for supporting hot plug, with plug and play, it is easy to carry and protects
The advantage of pipe.In existing equipment, decryption program is solidificated in barcode scanning gun, and security is poor, using silver in the present invention
Protecting the algorithm and key of the decryption of Quick Response Code, security is very high, Ke Yiyou for the wide variety of secure hardware-U-shield of industry
Effect solves the safety problem of vehicle quality certificates Quick Response Code decoding.
The high photographing instrument of the present invention and the advantage of coding/decoding method are embodied in：
（1）The image information of two-dimensional bar code is obtained by high photographing instrument, Image semantic classification and Quick Response Code decoding is then carried out, is entered
And operation is decrypted using U-shield, obtain the cleartext information of vehicle quality certificates.Customer information retention, and energy can so be carried out
The acquisition of vehicle quality certificates Quick Response Code is carried out, so as to realize the multiplexing of high photographing instrument function.
（2）Dedicated scan rifle need not be used, the government procurement expense of thousand of units per platform can be saved then, while making car
The business handling of management institute is more succinct, facilitate.
（3）U-shield security module is inserted in high photographing instrument base USB interface in the form of USB device, or directly against being attached to height
Clap on the circuit board of instrument, high photographing instrument is obtained after image, Quick Response Code is decoded by images themselves processing module, and then phase is carried out with U-shield
Mutually certification, effectively improves system effectiveness.
（4）In U-shield key and decipherment algorithm by U-shield software and hardware safeguard protection, will not be by unauthorized access.Should in application
When scheme reads vehicle quality certificates Quick Response Code, the two-dimensional code data for needing decryption is sent to U-shield security module, U-shield by high photographing instrument
Security module is decrypted, and plaintext is sent back to, and in the process the mode of operation of U-shield is the black box of a safety, its inside
Algorithm will not leak with key, so as to ensure that security.
（5）Protection is encrypted by U-shield certification protection, to encryption factor and protection is encrypted to master key, have
Effect improves the security that system decrypts Quick Response Code.
Description of the drawings
Fig. 1 is the flow chart of the coding/decoding method of the two-dimension code safe decoding high photographing instrument of the present invention；
Fig. 2 is the initialization flowchart of U-shield security module in the present invention；
Fig. 3 is the acquisition flow chart of Quick Response Code plaintext binary data in the present invention；
Fig. 4 is the flow chart that high photographing instrument is mutually authenticated with U-shield security module.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described with embodiment.
The vehicle quality certificates two-dimension code safe decoding high photographing instrument of the present invention is made up of high photographing instrument, U-shield security module and PC,
High photographing instrument is used for the image of collection vehicle quality certification Quick Response Code and the other information of registrant, U-shield security module by grafting or
Embedded form is connected with high photographing instrument communication, and the image of high photographing instrument collection Quick Response Code simultaneously obtains Quick Response Code by the process to image
Ciphertext binary data；U-shield security module is used to for ciphertext binary data to be converted into plaintext binary data, to obtain car
Registration data.High photographing instrument can be connected with PC by USB port, and U-shield security module also can pass through with high photographing instrument
USB port is connected.
As shown in figure 1, giving the flow chart of the coding/decoding method of the two-dimension code safe decoding high photographing instrument of the present invention, it passes through
Following steps are realizing：
A). the connection of equipment, high photographing instrument is connected with the PORT COM of PC, to realize between PC and high photographing instrument
Data transfer；Initialized U-shield security module is connected with grafting or embedded form with high photographing instrument, with realize high photographing instrument with
Data transfer between U-shield module；
As shown in Fig. 2 the initialization flowchart of U-shield security module is given, the initialization of U-shield security module in the step
Realized by following steps：
A-1). loading algorithm and key, decipherment algorithm, the solution of vehicle quality certificates Quick Response Code are loaded in U-shield security module
The master key and certification key of key and U-shield security module, if a loading failure, then provides the report of loading error
Accuse and remind；
U-shield security module needs to be loaded into three kinds of keys in initialization procedure, for decrypting the decruption key of 2 D code information,
For the U-shield master key of encrypted decryption key, and for the unique authentication key of U-shield legitimacy identification.
A-2). input and acquisition information, encryption factor Enfac and authorization code PIN are input into in U-shield security module, and obtain
Take the unique identifier UID of U-shield security module；
The UID of U-shield represents the unique identifier of U-shield, is loaded in U-shield production process, it is impossible to by extraneous reading.Authorize
Code PIN and encryption factor Enfac are manually set before U-shield initialization, for initialization and two-dimensional code data decrypting process.
A-3). mask key is generated, mask is generated using the unique identifier UID and authorization code PIN of U-shield security module close
Key；
U-shield inside UID generates mask key with the PIN of extraneous input.In initialization procedure, mask key is outer for encrypting
The Enfac of boundary's input；In two-dimensional code data decrypting process, mask key be used to decrypting extraneous input in encrypted state
Enfac。
A-4). decruption key is encrypted, first encryption factor Enfac U-shield security module master key is filled in into
Below, temporary key is generated；Then decruption key is encrypted using temporary key, and the decruption key after encryption is stored in
In U-shield security module；
Encryption factor Enfac is used to fill U-shield master key, generates temporary key.In initialization procedure, temporary key is used for
Encrypted decryption key；In two-dimensional code data decrypting process, temporary key is used for decruption key of the decryption in encrypted state.
A-5). the encryption of encryption factor, be encrypted using the mask key pair encryption factor, the encryption after being encrypted because
Son, so that encryption factor becomes encrypted state from exposed state；
A-6). information is loaded into into high photographing instrument, authorization code PIN, certification key and encrypted encryption factor is loaded into high
In clapping instrument, the initialization of U-shield security module is completed
B). identification of equipment validity, the correctness of the authentication data that high photographing instrument is sent by checking U-shield security module,
Whether the U-shield security module to judge connected is legal；
As shown in figure 4, giving the flow chart that high photographing instrument is mutually authenticated with U-shield security module, equipment is legal in the step
Property certification is realized by following steps：
B-1). checking request is sent, high photographing instrument to U-shield security module sends RANDOM NUMBER request, to ask to be mutually authenticated；
B-2). passback random number, U-shield security module produces random number and sends it to high photographing instrument；
B-3). authentication data is produced, U-shield security module is by step b-2) random number that produces is close with the certification that itself is stored
Key carries out RSA operation, and the result that computing is obtained sends high photographing instrument to as authentication data；
B-4). judge whether operation result is identical, high photographing instrument is close with the certification that itself is stored using the random number for receiving
Key carries out RSA operation, and judges whether the operation result of itself is identical with the authentication data that U-shield security module is transmitted, if phase
Together, then it is assumed that U-shield security module is legal；If it is not the same, then think that U-shield security module is illegal, authentication failed.
C). the collection and process of image in 2 D code, the original image of high photographing instrument collection vehicle quality certification Quick Response Code, and pass through
Image processing method obtains decodable Quick Response Code picture rich in detail；
The processing method of image in 2 D code includes frame choosing, mirror image, rotates, cuts, changing image size, instead in the step
Color, gray-scale map, binary map, dithering process, colour switching, Gamma correction, increase saturation degree, reduce saturation degree, increase brightness and/
Or reduction brightness processed.
D). the acquisition of Quick Response Code ciphertext, image in 2 D code of the high photographing instrument after to process is decoded, and obtains Quick Response Code
Ciphertext binary data；
E). the acquisition of Quick Response Code plaintext, high photographing instrument sends the ciphertext binary data of Quick Response Code to U-shield security module, U
Shield security module is decrypted by decipherment algorithm to ciphertext binary data, obtains the plaintext binary data of Quick Response Code, and
To be stored in plaintext binary data transmission to PC.
As shown in figure 3, the acquisition flow chart of Quick Response Code plaintext binary data in the present invention is given, two dimension in the step
The acquisition of code plaintext is realized by following steps：
E-1). Quick Response Code ciphertext is sent, high photographing instrument sends the ciphertext binary data of Quick Response Code to U-shield security module, with
Just U-shield security module is decrypted to the ciphertext of Quick Response Code；
E-2). send decryption data, high photographing instrument to U-shield security module send authorization code PIN and the encryption encrypted because
Son；
E-3). generate mask key, U-shield security module obtains first the unique identifier UID of itself, recycle UID with
The authorization code PIN for receiving generates the mask key of encryption factor Enfac；
E-4). encryption factor is obtained, reduction is carried out with the encryption factor after mask key pair encryption and is obtained encryption factor
Enfac；
E-5). encrypted decruption key is read, it is close that U-shield security module reads encrypted decryption in initialization procedure
Key；
E-7). decruption key is obtained, encryption factor is filled in behind U-shield master key, generate temporary key, using interim
Key is decrypted to the decruption key in encrypted state, obtains decruption key；
E-8). obtain Quick Response Code in plain text, ciphertext binary data is decrypted using decruption key, obtain plaintext two and enter
Data processed, and plaintext binary data is uploaded to into PC.
The vehicle quality certificates two-dimension code safe decoding high photographing instrument of the present invention and coding/decoding method, obtain vehicle and close by high photographing instrument
Lattice demonstrate,prove the ciphertext binary data of Quick Response Code, then the ciphertext of Quick Response Code is decrypted in U-shield security module, obtain Quick Response Code
Plaintext binary data, realize the acquisition of vehicle registration registration data.Because the decryption of data is in U-shield security module
In carry out, be effectively guaranteed the security of decipherment algorithm and decruption key, while avoiding existing vehicle immediately Quick Response Code
The use of scanning device, not only simplify flow process, improves data inputting efficiency, and also save opening for buying scanning device
.
Claims (5)
1. a kind of vehicle quality certificates two-dimension code safe decodes the coding/decoding method of high photographing instrument, and the decoding of vehicle quality certificates two-dimension code safe is high
Clapping instrument includes carrying out the high photographing instrument of high-definition image collection, the high photographing instrument grafting or is embedded with U-shield security module, and high photographing instrument is used
In the image of collection vehicle quality certification Quick Response Code, and the ciphertext binary data of Quick Response Code is obtained by the process to image；U-shield
Security module is used to for ciphertext binary data to be converted into plaintext binary data, to obtain vehicle registration registration data；Institute
State high photographing instrument and be connected with the PC for carrying out data storage, U-shield security module sends the plaintext binary data after conversion to PC
Machine；Characterized in that, coding/decoding method is comprised the following steps：
A). the connection of equipment, high photographing instrument is connected with the PORT COM of PC, to realize the data between PC and high photographing instrument
Transmission；Initialized U-shield security module is connected with grafting or embedded form with high photographing instrument, to realize high photographing instrument and U-shield
Data transfer between module；
B). identification of equipment validity, high photographing instrument is sentenced by verifying the correctness of the authentication data that U-shield security module is sent
Whether disconnected connected U-shield security module is legal；
C). the collection and process of image in 2 D code, the original image of high photographing instrument collection vehicle quality certification Quick Response Code, and by image
Processing method obtains decodable Quick Response Code picture rich in detail；
D). the acquisition of Quick Response Code ciphertext, image in 2 D code of the high photographing instrument after to process is decoded, and obtains the close of Quick Response Code
Literary binary data；
E). the acquisition of Quick Response Code plaintext, high photographing instrument sends the ciphertext binary data of Quick Response Code to U-shield security module, U-shield peace
Full module is decrypted by decipherment algorithm to ciphertext binary data, obtains the plaintext binary data of Quick Response Code, and will be bright
Literary binary data transmission is stored into PC；
Wherein, the initialization of U-shield security module is realized by following steps in step a)：
A-1). loading algorithm and key, decipherment algorithm, the decryption that vehicle quality certificates Quick Response Code is loaded in U-shield security module is close
The master key and certification key of key and U-shield security module, if a loading failure, then the report for providing loading error is carried
Wake up；
A-2). input and acquisition information, encryption factor Enfac and authorization code PIN are input into in U-shield security module, and obtain U-shield
The unique identifier UID of security module；
A-3). mask key is generated, using the unique identifier UID and authorization code PIN of U-shield security module mask key is generated；
A-4). decruption key is encrypted, encryption factor Enfac is filled in behind U-shield security module master key first,
Generate temporary key；Then decruption key is encrypted using temporary key, and the decruption key after encryption is stored in into U-shield peace
In full module；
A-5). the encryption of encryption factor, it is encrypted using the mask key pair encryption factor, the encryption factor after being encrypted,
So that encryption factor becomes encrypted state from exposed state；
A-6). information is loaded into into high photographing instrument, authorization code PIN, certification key and encrypted encryption factor are loaded into into high photographing instrument
In, complete the initialization of U-shield security module.
2. vehicle quality certificates two-dimension code safe according to claim 1 decodes the coding/decoding method of high photographing instrument, it is characterised in that
The acquisition of Quick Response Code plaintext in step e) is realized by following steps：
E-1). Quick Response Code ciphertext is sent, high photographing instrument sends the ciphertext binary data of Quick Response Code to U-shield security module, so as to U-shield
Security module is decrypted to the ciphertext of Quick Response Code；
E-2). decryption data are sent, high photographing instrument to U-shield security module sends authorization code PIN and the encryption factor encrypted；
E-3). mask key is generated, U-shield security module obtains first the unique identifier UID of itself, recycle UID and receive
The authorization code PIN for arriving generates the mask key of encryption factor Enfac；
E-4). encryption factor is obtained, reduction is carried out with the encryption factor after mask key pair encryption and is obtained encryption factor Enfac；
E-5). encrypted decruption key is read, U-shield security module reads encrypted decruption key in initialization procedure；
E-7). decruption key is obtained, encryption factor is filled in behind U-shield master key, temporary key is generated, using temporary key
Decruption key in encrypted state is decrypted, decruption key is obtained；
E-8). obtain Quick Response Code in plain text, ciphertext binary data is decrypted using decruption key, obtain plaintext binary number
According to, and plaintext binary data is uploaded to into PC.
3. vehicle quality certificates two-dimension code safe according to claim 1 decodes the coding/decoding method of high photographing instrument, it is characterised in that
Identification of equipment validity described in step b) is realized by following steps：
B-1). checking request is sent, high photographing instrument to U-shield security module sends RANDOM NUMBER request, to ask to be mutually authenticated；
B-2). passback random number, U-shield security module produces random number and sends it to high photographing instrument；
B-3). authentication data is produced, U-shield security module is by step b-2) the certification key that stores with itself of the random number that produces enters
Row RSA operation, and the result that computing is obtained sends high photographing instrument to as authentication data；
B-4). judge whether operation result is identical, high photographing instrument is entered using the certification key that the random number for receiving is stored with itself
Row RSA operation, and judge whether the operation result of itself is identical with the authentication data that U-shield security module is transmitted, if identical,
Think that U-shield security module is legal；If it is not the same, then think that U-shield security module is illegal, authentication failed.
4. vehicle quality certificates two-dimension code safe according to claim 1 decodes the coding/decoding method of high photographing instrument, it is characterised in that
The processing method of the image in 2 D code in step c) to obtaining includes frame choosing, mirror image, rotates, cuts, changing image size, instead
Color, gray-scale map, binary map, dithering process, colour switching, Gamma correction, increase saturation degree, reduce saturation degree, increase brightness and/
Or reduction brightness processed.
5. vehicle quality certificates two-dimension code safe according to claim 1 decodes the coding/decoding method of high photographing instrument, it is characterised in that
High photographing instrument is connected with PC by USB port in step a)；U-shield security module is connected with high photographing instrument also by USB port.
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| CN104240259B (en) * | 2014-10-10 | 2017-04-05 | 江苏国光信息产业股份有限公司 | High photographing instrument voucher intelligence cutting edge correction system and method based on contours segmentation |
| CN105787403B (en) * | 2014-12-19 | 2019-03-05 | 新大陆数字技术股份有限公司 | A kind of bar code reading method of high pixel image processing and the bar code recognizing apparatus of high pixel image processing |
| CN106650870A (en) * | 2016-11-01 | 2017-05-10 | 南京理工大学 | Access safety two-dimensional code generation method |
| CN109005201A (en) * | 2018-11-02 | 2018-12-14 | 美的集团股份有限公司 | Transmission method, server, equipment and the storage medium of creation data |
| CN111539496A (en) * | 2020-04-20 | 2020-08-14 | 山东确信信息产业股份有限公司 | Vehicle information two-dimensional code generation method, two-dimensional code license plate, authentication method and system |
| CN112991609A (en) * | 2021-02-23 | 2021-06-18 | 长久金孚企业管理咨询（深圳）有限公司 | Method, device and equipment for identifying authenticity of automobile certificate |
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| JP2009239328A (en) * | 2008-03-25 | 2009-10-15 | Canon Inc | Image processing device, and image processing method |
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