CN108667793A - A kind of hardware cryptographic devices based on PROFIBUS buses - Google Patents
A kind of hardware cryptographic devices based on PROFIBUS buses Download PDFInfo
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- CN108667793A CN108667793A CN201810206543.7A CN201810206543A CN108667793A CN 108667793 A CN108667793 A CN 108667793A CN 201810206543 A CN201810206543 A CN 201810206543A CN 108667793 A CN108667793 A CN 108667793A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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Abstract
The present invention relates to control extension fields, more particularly to a kind of hardware cryptographic devices based on PROFIBUS buses, the hardware cryptographic devices include numerical control unit, encryption unit and PROFIBUS buses, and the PROFIBUS buses are separately connected numerical control unit and encryption unit；Wherein, the numerical control unit sends operation requests to encryption unit by PROFIBUS buses, and the encryption unit passes through PROFIBUS bus feedbacks encrypted state information to numerical control unit according to operation requests.The hardware cryptographic devices are based on PROFIBUS buses and realize hardware encryption, and level of encryption is high, is not easy by Brute Force.
Description
Technical field
The present invention relates to control extension fields, and in particular to a kind of hardware cryptographic devices based on PROFIBUS buses.
Background technology
Numerically-controlled machine tool is the abbreviation of numerically-controlled machine tool, is a kind of automated machine tool equipped with program control system.The control
System processed can be handled logically with control coding or other symbolic instruction regulated procedures, and be decoded, with code
Digital representation, numerical control device is inputted by information carrier.Various control signals are sent out by numerical control device through calculation process, are controlled
The action of lathe, shape and size by drawing, automatically processes part.Numerically-controlled machine tool preferably solves multiple
Miscellaneous, accurate, small mount, multi items part processing problems are a kind of flexible, dynamical automated machine tools, are represented existing
It is a kind of typical electromechanical integrated product for the developing direction of Machine-Tool Control technology.
With the arrival in intelligence manufacture " industry 4.0 " epoch, digital control system can support more and more fieldbus.Numerical control
Lathe price is high, would generally be used in sale and complete down payment by a certain percentage, remaining fund ties the mode paid by stages.But it is even
You will appear the case where user is in arrears with remaining fund.Therefore, Machine Manufacture manufacturer is encrypted lathe by digital control system, and realization is awarded
Power uses control.
Existing cipher mode is that pure software is encrypted or carries out pure hardware encryption using special encryption chip, uses presence
Following defect：1., pure software encryption be easy to crack, the degree of opening of control system is high, is easy by Brute Force；2., it is pure hard
Part encryption uses special chip, of high cost, complex management.
Invention content
The technical problem to be solved in the present invention is, for the drawbacks described above of the prior art, provides one kind and is based on
The hardware cryptographic devices of PROFIBUS buses solve the problems, such as that numerical control device level of encryption is low and is easy to be cracked.
To solve the technical problem, the present invention provides a kind of hardware cryptographic devices based on PROFIBUS buses, described hard
Part encryption device includes numerical control unit, encryption unit and PROFIBUS buses, and the PROFIBUS buses are separately connected numerical control list
Member and encryption unit；Wherein, the numerical control unit sends operation requests to encryption unit, the encryption by PROFIBUS buses
Unit passes through PROFIBUS bus feedbacks encrypted state information to numerical control unit according to operation requests.
Wherein, preferred version is：The numerical control unit includes the first PROFIBUS modules, the first PROFIBUS modules
PROFIBUS buses are connected, the first PROFIBUS modules realize data transmission with PROFIBUS buses.
Wherein, preferred version is：The numerical control unit further includes control module and operation module, the control module difference
The first PROFIBUS modules and operation module are connected, the control module reads the encrypted state information of the first PROFIBUS modules
And it is sent to operation module, the operation module can be operated or be not available for operate according to encrypted state information.
Wherein, preferred version is：The numerical control unit further includes numerically-controlled machine tool service module, and the numerically-controlled machine tool services mould
Block connects the first PROFIBUS modules, and the numerically-controlled machine tool service module obtains the first data address of numerically-controlled machine tool and is sent to
First PROFIBUS modules.
Wherein, preferred version is：The numerical control unit further includes memory module, and the memory module is separately connected control mould
Block, the first PROFIBUS modules and numerical control machine tool service module, the first PROFIBUS modules store encrypted state information
To memory module, the control module reads encrypted state information from memory module；The numerically-controlled machine tool service module obtains number
It controls the first data address of lathe and stores and arrive memory module.
Wherein, preferred version is：The encryption unit includes the 2nd PROFIBUS modules and data obtaining module, the letter
Breath acquisition module obtains encrypted state information and is sent to the 2nd PROFIBUS modules, and the 2nd PROFIBUS modules will encrypt
Status information is sent to PROFIBUS buses.
Wherein, preferred version is：The 2nd PROFIBUS modules include VPC3 agreements submodule and the first processing submodule
Block, the VPC3 agreements submodule are separately connected PROFIBUS buses and the first processing submodule, the VPC3 agreements submodule
Data transmission is realized with PROFIBUS buses, and read operation request and the first data address are sent to the first processing submodule.
Wherein, preferred version is：The 2nd PROFIBUS modules further include toggle switch submodule, the toggle switch
Submodule connection the first processing submodule, the toggle switch submodule are arranged the second data address and are sent to the first processing
Module.
Wherein, preferred version is：Described information acquisition module includes second processing submodule and clock submodule, and described
Two processing submodules are separately connected clock submodule and the first processing submodule, and reference clock is sent to by the clock submodule
Second processing submodule, the second processing submodule obtains encrypted state information according to reference clock cycle, and is sent to
First processing submodule.
Wherein, preferred version is：Described information acquisition module further includes IO submodules, at the IO submodules connection second
Submodule is managed, and is circumscribed with multiple LED light, the second processing submodule control LED light is turned on or off.
The beneficial effects of the present invention are compared with prior art, the present invention is a kind of total based on PROFIBUS by designing
The hardware cryptographic devices of line, the hardware cryptographic devices are based on PROFIBUS buses and realize hardware encryption, and number is respectively set
Unit and encryption unit are controlled, level of encryption is high, is not easy by Brute Force；Also, transmission rate is fast, and manufacturing cost is cheap；Meanwhile
The hardware cryptographic devices are additionally provided with the first processing submodule, are corrected by data address, further increase and crack difficulty,
Improve confidentiality；In addition, the hardware cryptographic devices are additionally provided with clock module, local zone time is provided by clock module, is made
The time it is accurate, it is not easily modified.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing：
Fig. 1 is the structure diagram of hardware cryptographic devices of the present invention；
Fig. 2 is the structure diagram of numerical control unit of the present invention；
Fig. 3 is the structure diagram of encryption unit of the present invention.
Specific implementation mode
In conjunction with attached drawing, elaborate to presently preferred embodiments of the present invention.
As shown in Figure 1 to Figure 3, the present invention provides a kind of hardware cryptographic devices based on PROFIBUS buses.
Specifically, and with reference to figure 1, a kind of hardware cryptographic devices based on PROFIBUS buses 300, the hardware encryption dress
It sets including numerical control unit 100, encryption unit 200 and PROFIBUS buses 300, the PROFIBUS buses 300 are separately connected number
Control unit 100 and encryption unit 200, the also external numerically-controlled machine tool 400 of the numerical control unit 100；Wherein, the numerical control unit 100
Operation requests are sent to encryption unit 200 by PROFIBUS buses 300, and the encryption unit 200 passes through according to operation requests
PROFIBUS buses 300 feed back encrypted state information to numerical control unit 100, and the encrypted state information includes debugging mode, awards
Power state and expired state, when encrypted state information is debugging mode or licensing status, the numerical control unit 100 can logarithm
Control lathe 400 is operated；When encrypted state information is expired state, the numerical control unit 100 can not be to numerically-controlled machine tool 400
It is operated.The PROFIBUS buses 300 be it is a kind of internationalization, open, independent of equipment manufacturer fieldbus
Standard is widely used in automated manufacturing, process industry automation and the other fields automation such as building, traffic power,
Transmission speed is within the scope of 9.6kbaud to 12Mbaud；Also, the numerical control unit 100 and encryption unit 200 are independently set
It sets, level of encryption is high, is not easy by Brute Force.
More specifically, and with reference to figure 2, the numerical control unit 100 includes the first PROFIBUS modules 110, control module 120
With operation module 130, the first PROFIBUS modules 110 connection PROFIBUS buses 300, the control module 120 is distinguished
Connect the first PROFIBUS modules 110 and operation module 130；The first PROFIBUS modules 110 and PROFIBUS buses 300
It realizes data transmission, obtains the encrypted state information in PROFIBUS buses 300, the control module 120 reads first
The encrypted state information of PROFIBUS modules 110 is simultaneously sent to operation module 130, and the operation module 130 is according to encrypted state
Information can be operated or be not available for operate.User, which inputs, authorizes active coding to control module 120, immediately control module
120 will authorize active coding to be sent to PROFIBUS buses 300 by the first PROFIBUS modules 110, the encryption unit 200 from
It is read in PROFIBUS buses 300 and authorizes active coding, and verified whether correctly, it is described if correctly, feeding back to control module 120
Control module 120 can unlocking operation module 130, user can by operation module 130 to numerically-controlled machine tool 400 carry out corresponding operating.
Wherein, the mac address of nic, licensing status and the deadline that authorize active coding to include digital control system industrial control computer mainboard
Etc. information.
Further, and with reference to figure 2, the numerical control unit 100 further includes numerically-controlled machine tool service module 150, the numerical control
Machine tool service module 150 connects the first PROFIBUS modules 110 and external numerically-controlled machine tool 400, and the numerically-controlled machine tool services mould
Block 150 obtains the first data address of numerically-controlled machine tool 400 and is sent to the first PROFIBUS modules 110, and described first
First data address is sent to PROFIBUS buses 300 by PROFIBUS modules 110.
Still further, and with reference to figure 2, the numerical control unit 100 further includes memory module 140, the memory module 140
It is separately connected control module 120, the first PROFIBUS modules 110 and numerical control machine tool service module 150, the first PROFIBUS
Encrypted state information storage to memory module 140, the control module 120 are read encryption shape by module 110 from memory module 140
State information；The numerically-controlled machine tool service module 150, which obtains the first data address of numerically-controlled machine tool 400 and stores, arrives memory module
140, the first PROFIBUS modules 110 can also read the first data address from memory module 140.
In the present embodiment, the first PROFIBUS modules 110 are preferably the first PROFIBUS chips, the numerical control machine
Bed service module 150 is preferably that numerically-controlled machine tool 400 services chip, and the memory module 140 is preferably programmable logic controller (PLC)
(Programmable Logic Controller), the preferably chip in order to control of the control module 120, the operation module 130
Preferably HMI operator control panels.
More specifically, and with reference to figure 3, the encryption unit 200 includes the 2nd PROFIBUS modules 210 and acquisition of information mould
Block, the 2nd PROFIBUS modules 210 obtain the operation requests in PROFIBUS buses 300 and are sent to acquisition of information mould
Block, described information acquisition module obtain encrypted state information and are sent to the 2nd PROFIBUS modules 210, and described second
Encrypted state information is sent to PROFIBUS buses 300 by PROFIBUS modules 210.
Wherein, and with reference to figure 3, the 2nd PROFIBUS modules 210 include the processing of VPC3 agreements submodule 211 and first
Submodule 212, the VPC3 agreements submodule 211 are separately connected PROFIBUS buses 300 and first and handle submodule 212, institute
It states VPC3 agreements submodule 211 and realizes data transmission, and read operation request and the first data address with PROFIBUS buses 300
It is sent to the first processing submodule 212, in addition, encrypted state information can be also sent to PROFIBUS buses 300, transmission rate
Up to 12Mbit/S, reliability is high；Described first handles submodule 212 by the data conversion storage received, processing, tissue, and root
According to requiring external diagnosis etc., then transmit data to data obtaining module.
In the present embodiment, and with reference to figure 3, the 2nd PROFIBUS modules 210 further include toggle switch submodule
213, first processing of the connection of toggle switch submodule 213 submodule 212 is described to add in each hardware cryptographic devices
Second data address of close unit 200 is different, needs the first data address according to the first PROFIBUS modules 110 and sets
It sets；The toggle switch submodule 213 is equipped with 8 toggle switch, the second data address can be arranged by toggle switch so that institute
It states toggle switch submodule 213 to be easy to change the second data address, the toggle switch submodule 213 sets the second data address
The first processing submodule 212 is sent to after setting, the first processing submodule 212 compares the first data address and the second data
Address.
Further, and with reference to figure 3, described information acquisition module includes second processing submodule 221 and clock submodule
222, the second processing submodule 221 is separately connected clock submodule 222 and first and handles submodule 212, clock
Reference clock is sent to second processing submodule 221 by module 222, and the second processing submodule 221 is according to reference clock week
Phase property obtains encrypted state information, and power down is stored in in-chip FLASH, is subsequently sent to the first processing submodule 212.When
When two processing submodules 221 detect that mandate active coding is expired, the control module 120 is fed back to, the control module 120 can
Cryptographic operation module 130, user need to input new mandate active coding to control module 120, can continue through operation mould again
Block 130 carries out corresponding operating to numerically-controlled machine tool 400.Wherein, the clock submodule 222 provides reference clock, when being local
Clock, the local clock by 100 time effects of numerical control unit, do not increase the difficulty of Brute Force, improve encrypted safety
Property.
Still further, and with reference to figure 3, described information acquisition module further includes IO submodules 223, the IO submodules
223 connection second processing submodules 221, it is reserved that the IO submodules 223 are equipped with 8 physical buttons, 1 band switch and 16
IO, and in reserved IO, there is 8 reserved IO to be circumscribed with LED light, the second processing submodule 221 controls LED and opens
It opens or is closed, lighted when the LED light is for prompting encrypted state information, such as can be operated to numerically-controlled machine tool 400 green
Lamp flashes the redlight when can not be operated to numerically-controlled machine tool 400.
In the present embodiment, the 2nd PROFIBUS modules 210 are preferably the 2nd PROFIBUS chips, the VPC3 associations
View submodule 211 is preferably the sub- chip of VPC3 agreements that is embedded or being external in the 2nd PROFIBUS chips, first processing
Submodule 212 is preferably STM32 microprocessors that are embedded or being external in the 2nd PROFIBUS chips, the toggle switch submodule
Block 213 is preferably the sub- chip of toggle switch that is embedded or being external in the 2nd PROFIBUS chips；Described information acquisition module is excellent
It is selected as acquisition of information chip, the second processing submodule 221 is preferably 89C51 that is embedded or being external in acquisition of information chip
Microcontroller, the clock submodule 222 are preferably the sub- chip of clock that is embedded or being external in acquisition of information chip, IO
Module 223 is preferably I/O interface that is embedded or being external in acquisition of information chip.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
Any modification made all within the spirits and principles of the present invention, equivalent replacement, improve etc., it should be included in the guarantor of the present invention
It protects in range.
Claims (10)
1. a kind of hardware cryptographic devices based on PROFIBUS buses, it is characterised in that：The hardware cryptographic devices include numerical control
Unit, encryption unit and PROFIBUS buses, the PROFIBUS buses are separately connected numerical control unit and encryption unit；Wherein,
The numerical control unit sends operation requests to encryption unit by PROFIBUS buses, and the encryption unit is logical according to operation requests
PROFIBUS bus feedbacks encrypted state information is crossed to numerical control unit.
2. hardware cryptographic devices according to claim 1, it is characterised in that：The numerical control unit includes the first PROFIBUS
Module, the first PROFIBUS modules connect PROFIBUS buses, the first PROFIBUS modules and PROFIBUS buses
Realize data transmission.
3. hardware cryptographic devices according to claim 2, it is characterised in that：The numerical control unit further include control module and
Operation module, the control module are separately connected the first PROFIBUS modules and operation module, and the control module reads first
The encrypted state information of PROFIBUS modules is simultaneously sent to operation module, and the operation module can be carried out according to encrypted state information
It operates or is not available for operate.
4. hardware cryptographic devices according to claim 3, it is characterised in that：The numerical control unit further includes numerically-controlled machine tool clothes
Business module, the numerically-controlled machine tool service module connect the first PROFIBUS modules, and the numerically-controlled machine tool service module obtains numerical control
First data address of lathe is simultaneously sent to the first PROFIBUS modules.
5. hardware cryptographic devices according to claim 4, it is characterised in that：The numerical control unit further includes memory module,
The memory module is separately connected control module, the first PROFIBUS modules and numerical control machine tool service module, and described first
Encrypted state information storage to memory module, the control module are read encrypted state letter by PROFIBUS modules from memory module
Breath；The numerically-controlled machine tool service module, which obtains the first data address of numerically-controlled machine tool and stores, arrives memory module.
6. hardware cryptographic devices according to any one of claims 1 to 5, it is characterised in that：The encryption unit includes second
PROFIBUS modules and data obtaining module, described information acquisition module obtain encrypted state information and are sent to second
Encrypted state information is sent to PROFIBUS buses by PROFIBUS modules, the 2nd PROFIBUS modules.
7. hardware cryptographic devices according to claim 6, it is characterised in that：The 2nd PROFIBUS modules include VPC3
Agreement submodule and the first processing submodule, the VPC3 agreements submodule are separately connected PROFIBUS buses and the first processing
Module, the VPC3 agreements submodule and PROFIBUS buses realize data transmission, and read operation request and the first data
Location is sent to the first processing submodule.
8. hardware cryptographic devices according to claim 7, it is characterised in that：The 2nd PROFIBUS modules further include dialling
Code switch submodule, the first processing of toggle switch submodule connection submodule, the toggle switch submodule setting second
Data address is simultaneously sent to the first processing submodule.
9. hardware cryptographic devices according to claim 8, it is characterised in that：Described information acquisition module includes second processing
Submodule and clock submodule, the second processing submodule is separately connected clock submodule and the first processing submodule, described
Reference clock is sent to second processing submodule by clock submodule, and the second processing submodule is according to reference clock cycle
Encrypted state information is obtained, and is sent to the first processing submodule.
10. hardware cryptographic devices according to claim 9, it is characterised in that：Described information acquisition module further includes IO
Module, the IO submodules connect second processing submodule, and are circumscribed with multiple LED light, the second processing submodule control
LED light processed is turned on or off.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810206543.7A CN108667793B (en) | 2018-03-13 | 2018-03-13 | Hardware encryption device based on PROFIBUS bus |
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| CN201810206543.7A CN108667793B (en) | 2018-03-13 | 2018-03-13 | Hardware encryption device based on PROFIBUS bus |
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|---|---|
| CN108667793B (en) | 2021-08-31 |
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