CN104050419B - Data unidirectional introducing equipment based on FPGA and data individual event introduction method - Google Patents
Data unidirectional introducing equipment based on FPGA and data individual event introduction method Download PDFInfo
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- CN104050419B CN104050419B CN201410287217.5A CN201410287217A CN104050419B CN 104050419 B CN104050419 B CN 104050419B CN 201410287217 A CN201410287217 A CN 201410287217A CN 104050419 B CN104050419 B CN 104050419B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000006798 recombination Effects 0.000 claims description 3
- 238000005215 recombination Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/606—Protecting data by securing the transmission between two devices or processes
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Abstract
The invention discloses a kind of data unidirectional introducing equipment based on FPGA and data individual event introduction method, belong to data sheet to importing technical field, data unidirectional introducing equipment based on FPGA, port is sent including USB receiving port, fpga chip, optical waveguide module, USB PHY chip, USB, the integrated HPS of fpga chip, data packet module, data unpack module, USP IP kernel, USB receiving port, USB PHY chip, HPS, data packet module, optical waveguide module, data unpack module, USP IP kernel, USB PHY chip, USB send port be sequentially connected with.Data individual event introduction method based on FPGA, uses data unidirectional introducing equipment based on FPGA to realize data individual event in non-concerning security matters USB storage device is directed into relating computer.Present configuration is simple, security performance is high, can use data transmission between different security level equipment.
Description
Technical field
The present invention relates to a kind of data sheet to importing technical field, a kind of data sheet guide based on FPGA
Enter equipment and data individual event introduction method.
Background technology
Non-concerning security matters mobile memory medium, also referred to as universal storage device, refer to the portable hard drive for storing non-classified information,
Flash disk, CD, tape, video-tape, storage card and other there are all kinds of media of storage function.
It is widely used at present owing to mobile memory medium capacity is big, easy to use, but the most also gives information security
Bring great security risk.Except anthropic factor cause divulge a secret in addition to, if carry wooden horse storage device access computer,
Deposit data in a computer to be replicated the most in seconds, even destroyed.Especially storage device relates to non-
It would be possible to secret event can be caused to reveal after close computer and the direct cross-reference of relating computer, country and individual are believed
Breath safety constitutes threat greatly.
In order to solve the problem divulged a secret of General Mobile storage device, utilize one-way transmission principle design unidirectional of light
Importing equipment ensure that the safety that data are transmitted.Optical fiber is fibre-optic writing a Chinese character in simplified form, and one utilizes light in glass or plastics system
The fiber become.The total reflection principle utilizing light completes the transmission of light.Signal transmission is carried out it is ensured that signal passes with fiber-optic signal
Can ensure during defeated that transmitting procedure is unidirectional, feedback-less on the physical channel.The unidirectional introducing equipment of prior art
Using built-in Linux based on ARM to design, such design needs other many chips jointly to complete unidirectional import feature,
Complicated structure.
Summary of the invention
The technical assignment of the present invention is to provide a kind of simple in construction, low cost, security performance is high, it is close to use in difference
The data unidirectional introducing equipment based on FPGA carried out data transmission between the equipment of level and data individual event introduction method.
The technical assignment of the present invention realizes in the following manner,
Data unidirectional introducing equipment based on FPGA, including USB receiving port, fpga chip, optical waveguide module and 2
USB PHY chip, USB send port, and fpga chip is integrated with HPS, data packet module, data unpack module, USP IP kernel,
The HPS of fpga chip connects and controls a USB PHY chip, the USB receiving port of pluggable non-concerning security matters USB storage device with
This USB PHY chip connects；HPS, data packet module, optical waveguide module, data unpack module, USP IP kernel, another USB
PHY chip, USB send port and are sequentially connected with.
Data unidirectional introducing equipment based on FPGA also include being connected with fpga chip for storing configurator
FPGA configures chip.
Fpga chip is the model C yclone V chip that altera corp produces, and FPGA configuration chip model is
N25Q256A chip, USB PHY chip model is USB3300 chip, and optical waveguide module is the 1X9 SC interface standard of 155Mbps
Optical waveguide module.
Data individual event introduction method based on FPGA, uses data unidirectional introducing equipment based on FPGA to realize non-concerning security matters
Data individual event in USB storage device is directed into relating computer, comprises the steps:
(1), non-concerning security matters USB storage device is plugged into the USB receiving port of data unidirectional introducing equipment based on FPGA, base
Send port in the USB of the data unidirectional introducing equipment of FPGA and be connected to relating computer；
(2) reading of data in, the HPS control USB PHY chip of fpga chip completes non-concerning security matters USB storage device；
(3) data, read data packet module in fpga chip sends to optical waveguide module；
(4), data unpack module via the data during foldback returns fpga chip after optical waveguide module；
(5) the data transmission special FIFO to USB IP kernel of module, is unpacked through data；
(6), send port finally by USB to send to relating computer.
Fpga chip is the model C yclone V chip that altera corp produces, and USB PHY chip model is
USB3300 chip, optical waveguide module is the optical waveguide module of the 1X9 SC interface standard of 155Mbps；
Use HPS in Cyclone V chip as USB-host controller, by USB-host controller and
USB3300 chip, USB receiving port identify that non-concerning security matters USB storage device and storage data are any file system, know
Further according to corresponding document system format after Bie, read contained number in non-concerning security matters USB storage device according to bulk transfer protocol
According to；
Sending the data packet module to Cyclone V chip after digital independent, it is 16KB that data are packaged into size
Data, the data of the most front 512 bytes are header packet information；
Packet transmission after package carries out the signal of telecommunication conversion to optical signal to the transmitting portion of optical waveguide module, letter
Number carry out the optical signal conversion to the signal of telecommunication via the receiving portion of fiber-optic transfer to optical waveguide module；
Electrical signal data bag after conversion is sent to the data of Cyclone V chip and unpacks module, and data unpack module
According to header packet information, data are unpacked, by the form that data recombination is affiliated file system；
Then by USB IP kernel, the data after restructuring are sent to USB3300 chip；
Relating computer is provided with the driving of corresponding USB3300 chip, and relating computer sends port by USB and receives
The data received finally are left in the position, hard disk particular zones of relating computer by the data of USB PHY chip.
Header packet information mainly comprises the following steps: opening flag, takies 32 bytes；Packet type, accounts for 4 bytes, including
Packet, filename bag, catalogue bag or CRC bag；Valid data size, takies 4 bytes, represents in packet containing valid data
Number；Filesystem information, takies 2 bytes, is FAT32 or NTFS for distinguishing the file system format of data；File
Information, takies 256 bytes, including filename, file directory name；CRC bag, accounts for 4 bytes, if current bag is CRC bag, is CRC
Value, on the contrary it is 0；End mark, accounts for 32 bytes, the end in mark packet header.
Unidirectional importing special-purpose software in relating computer detects by data unidirectional introducing equipment based on FPGA
After the non-concerning security matters USB storage device accessed, then at operation interface automatic spring unidirectional importing special-purpose software circle of relating computer
Face, user inputs preset password and determines whether to receive and this time transmit data.
The data unidirectional introducing equipment based on FPGA of the present invention and data individual event introduction method have the advantage that
1, the structure of simplicity is only needed just can to complete non-concerning security matters USB storage device data sheet to import feature；
2, security performance is more preferable；
3, can use and carry out data transmission between the equipment of different security level.
Accompanying drawing explanation
The present invention is further described below in conjunction with the accompanying drawings.
Accompanying drawing 1 is the structured flowchart of data unidirectional introducing equipment based on FPGA；
Accompanying drawing 2 is the use schematic diagram of data individual event introduction method based on FPGA.
Detailed description of the invention
With reference to Figure of description and specific embodiment to the data unidirectional introducing equipment based on FPGA of the present invention and data
Individual event introduction method is described in detail below.
Embodiment 1:
The data unidirectional introducing equipment based on FPGA of the present invention, including USB receiving port, fpga chip, optical waveguide module
And 2 USB PHY chip, USB send port, fpga chip is integrated with HPS, data packet module, data unpack module,
USP IP kernel, the HPS of fpga chip connects and controls a USB PHY chip, the USB of pluggable non-concerning security matters USB storage device
Receiving port is connected with this USB PHY chip；HPS, data packet module, optical waveguide module, data unpack module, USP IP kernel,
Another USB PHY chip, USB send port and are sequentially connected with.
Data unidirectional introducing equipment based on FPGA also include being connected with fpga chip for storing configurator
FPGA configures chip.
FPGA, English full name Field-Programmable Gate Array, i.e. field programmable gate array.FPGA core
Sheet specifically includes that input-output unit able to programme (IOB), basic programmable logic cells (CLB), complete Clock management
(DCM), embedded block RAM(BRAM), abundant interconnection resource, embedded bottom functional unit, embedded stone.
FPGA configuration chip is used for storing configurator, and FPGA configuration chip is connected with fpga chip, after powering on every time
Fpga chip needs to read the configurator in FPGA configuration chip and carries out configuration and the initialization of tax revenue check card.
USB PHY chip: PHY(Physical Layer) refer to physical layer, the bottom of OSI, refer generally to and external signal
The chip of interface.USB PHY chip is and the chip of external USB signaling interface.
HPS, English full name Hard Processing System, be translated as hard nucleus management device system.
Embodiment 2:
The data unidirectional introducing equipment based on FPGA of the present invention, including USB receiving port, fpga chip, optical waveguide module
And 2 USB PHY chip, USB send port, fpga chip is integrated with HPS, data packet module, data unpack module,
USP IP kernel, the HPS of fpga chip connects and controls a USB PHY chip, the USB of pluggable non-concerning security matters USB storage device
Receiving port is connected with this USB PHY chip；HPS, data packet module, optical waveguide module, data unpack module, USP IP kernel,
Another USB PHY chip, USB send port and are sequentially connected with.
Data unidirectional introducing equipment based on FPGA also include being connected with fpga chip for storing configurator
FPGA configures chip.
Fpga chip is the model C yclone V chip that altera corp produces, and FPGA configuration chip model is
N25Q256A chip, USB PHY chip model is USB3300 chip, and optical waveguide module is the 1X9 SC interface standard of 155Mbps
Optical waveguide module.
Embodiment 3:
The data individual event introduction method based on FPGA of the present invention, uses data unidirectional introducing equipment based on FPGA to realize
Data individual event in non-concerning security matters USB storage device is directed into relating computer, comprises the steps:
(1), non-concerning security matters USB storage device is plugged into the USB receiving port of data unidirectional introducing equipment based on FPGA, base
Send port in the USB of the data unidirectional introducing equipment of FPGA and be connected to relating computer；
(2) reading of data in, the HPS control USB PHY chip of fpga chip completes non-concerning security matters USB storage device；
(3) data, read data packet module in fpga chip sends to optical waveguide module；
(4), data unpack module via the data during foldback returns fpga chip after optical waveguide module；
(5) the data transmission special FIFO to USB IP kernel of module, is unpacked through data；
(6), send port finally by USB to send to relating computer.
Embodiment 4:
The data individual event introduction method based on FPGA of the present invention, uses data unidirectional introducing equipment based on FPGA to realize
Data individual event in non-concerning security matters USB storage device is directed into relating computer, comprises the steps:
(1), non-concerning security matters USB storage device is plugged into the USB receiving port of data unidirectional introducing equipment based on FPGA, base
Send port in the USB of the data unidirectional introducing equipment of FPGA and be connected to relating computer；
(2) reading of data in, the HPS control USB PHY chip of fpga chip completes non-concerning security matters USB storage device；
(3) data, read data packet module in fpga chip sends to optical waveguide module；
(4), data unpack module via the data during foldback returns fpga chip after optical waveguide module；
(5) the data transmission special FIFO to USB IP kernel of module, is unpacked through data；
(6), send port finally by USB to send to relating computer.
Fpga chip is the model C yclone V chip that altera corp produces, and USB PHY chip model is
USB3300 chip, optical waveguide module is the optical waveguide module of the 1X9 SC interface standard of 155Mbps；
Use HPS in Cyclone V chip as USB-host controller, by USB-host controller and
USB3300 chip, USB receiving port identify that non-concerning security matters USB storage device and storage data are any file system, know
Further according to corresponding document system format after Bie, read contained number in non-concerning security matters USB storage device according to bulk transfer protocol
According to；
Sending the data packet module to Cyclone V chip after digital independent, it is 16KB that data are packaged into size
Data, the data of the most front 512 bytes are header packet information；
Packet transmission after package carries out the signal of telecommunication conversion to optical signal to the transmitting portion of optical waveguide module, letter
Number carry out the optical signal conversion to the signal of telecommunication via the receiving portion of fiber-optic transfer to optical waveguide module；
Electrical signal data bag after conversion is sent to the data of Cyclone V chip and unpacks module, and data unpack module
According to header packet information, data are unpacked, by the form that data recombination is affiliated file system；
Then by USB IP kernel, the data after restructuring are sent to USB3300 chip；
Relating computer is provided with the driving of corresponding USB3300 chip, and relating computer sends port by USB and receives
The data received finally are left in the position, hard disk particular zones of relating computer by the data of USB PHY chip.
With reference to as shown in table 1 below, header packet information mainly comprises the following steps: opening flag, takies 32 bytes；Bag class
Type, accounts for 4 bytes, including packet, filename bag, catalogue bag or CRC bag；Valid data size, takies 4 bytes, represents data
Bag contains the number of valid data；Filesystem information, takies 2 bytes, for distinguishing the file system format of data is
FAT32 or NTFS；Fileinfo, takies 256 bytes, including filename, file directory name；CRC bag, accounts for 4 bytes, if working as
Front bag be CRC bag then for crc value, otherwise be 0；Invalid bit, accounts for 178 bytes；End mark, accounts for 32 bytes, the knot in mark packet header
Bundle.
Table 1
Unidirectional importing special-purpose software in relating computer detects by data unidirectional introducing equipment based on FPGA
After the non-concerning security matters USB storage device accessed, then at operation interface automatic spring unidirectional importing special-purpose software circle of relating computer
Face, user inputs preset password and determines whether to receive and this time transmit data.
Above-mentioned detailed description of the invention is only the concrete case of the present invention, and the scope of patent protection of the present invention includes but not limited to
Above-mentioned detailed description of the invention, any data unidirectional introducing equipment based on FPGA meeting the present invention and data individual event introduction method
Claims and suitably change that it is done by any person of an ordinary skill in the technical field or replace, all should fall
Enter the scope of patent protection of the present invention.
Claims (3)
1. data individual event introduction method based on FPGA, it is characterised in that use data unidirectional introducing equipment based on FPGA to realize
Data individual event in non-concerning security matters USB storage device is directed into relating computer, comprises the steps:
(1), non-concerning security matters USB storage device be plugged into the USB receiving port of data unidirectional introducing equipment based on FPGA, based on
The USB of the data unidirectional introducing equipment of FPGA sends port and is connected to relating computer；
(2) reading of data in, the HPS control USB PHY chip of fpga chip completes non-concerning security matters USB storage device；
(3) data, read data packet module in fpga chip sends to optical waveguide module；
(4), data unpack module via the data during foldback returns fpga chip after optical waveguide module；
(5) the data transmission special FIFO to USB IP kernel of module, is unpacked through data；
(6), send port finally by USB to send to relating computer;
Fpga chip is the model C yclone V chip that altera corp produces, and USB PHY chip model is USB3300 core
Sheet, optical waveguide module is the optical waveguide module of the 1X9 SC interface standard of 155Mbps；
HPS in use Cyclone V chip is as USB-host controller, by USB-host controller and USB3300 core
Sheet, USB receiving port identify that non-concerning security matters USB storage device and storage data are any file system, after identification
Further according to corresponding document system format, read contained data in non-concerning security matters USB storage device according to bulk transfer protocol；
Sending the data packet module to Cyclone V chip after digital independent, data are packaged into the number that size is 16KB
According to, the data of the most front 512 bytes are header packet information；
Packet transmission after package carries out the signal of telecommunication conversion to optical signal, signal warp to the transmitting portion of optical waveguide module
The optical signal conversion to the signal of telecommunication is carried out by the receiving portion of fiber-optic transfer to optical waveguide module；
Electrical signal data bag after conversion is sent to the data of Cyclone V chip and unpacks module, data unpack module according to
Data are unpacked by header packet information, by the form that data recombination is affiliated file system；
Then by USB IP kernel, the data after restructuring are sent to USB3300 chip；
Relating computer is provided with the driving of corresponding USB3300 chip, and relating computer sends port by USB and receives USB
The data received finally are left in the position, hard disk particular zones of relating computer by the data of PHY chip.
Data individual event introduction method based on FPGA the most according to claim 1, it is characterised in that header packet information mainly by
Following sections forms: opening flag, takies 32 bytes；Packet type, accounts for 4 bytes, including packet, filename bag, catalogue bag
Or CRC bag；Valid data size, takies 4 bytes, represents the number containing valid data in packet；Filesystem information, accounts for
Use 2 bytes, be FAT32 or NTFS for distinguishing the file system format of data；Fileinfo, takies 256 bytes, including literary composition
Part name, file directory name；CRC bag, accounts for 4 bytes, if current bag is CRC bag, is crc value, otherwise is 0；End mark, accounts for 32
Byte, the end in mark packet header.
Data individual event introduction method based on FPGA the most according to claim 1, it is characterised in that in relating computer
Unidirectional importing special-purpose software detects the non-concerning security matters USB storage device accessed by data unidirectional introducing equipment based on FPGA
After, then at the automatic spring unidirectional importing special-purpose software interface, operation interface of relating computer, it is true that user inputs preset password
Fixed whether reception this time transmits data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410287217.5A CN104050419B (en) | 2014-06-25 | 2014-06-25 | Data unidirectional introducing equipment based on FPGA and data individual event introduction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410287217.5A CN104050419B (en) | 2014-06-25 | 2014-06-25 | Data unidirectional introducing equipment based on FPGA and data individual event introduction method |
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| CN104050419A CN104050419A (en) | 2014-09-17 |
| CN104050419B true CN104050419B (en) | 2016-08-24 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108717351A (en) * | 2018-05-21 | 2018-10-30 | 洛阳银杏科技有限公司 | The high speed one-way transmission apparatus and transmission method of movable storage device |
| CN108874721A (en) * | 2018-07-02 | 2018-11-23 | 威创集团股份有限公司 | Usb signal processing method, collection terminal and control terminal |
| CN109375875B (en) * | 2018-10-11 | 2020-03-17 | 北京明朝万达科技股份有限公司 | File transmission method and device |
| CN112926070A (en) * | 2021-03-02 | 2021-06-08 | 浪潮云信息技术股份公司 | Domestic CPU and operating system based non-secret-related domain and secret-related domain official document exchange method and system |
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| CN101661542A (en) * | 2009-09-04 | 2010-03-03 | 天津光电通信技术有限公司 | Unidirectional introducing equipment of movable memory medium |
| CN102903074A (en) * | 2012-10-12 | 2013-01-30 | 湖南大学 | Image processing apparatus based on field-programmable gate array (FPGA) |
| CN103440217A (en) * | 2013-09-17 | 2013-12-11 | 武汉大学 | Unidirectional U disk file transmission equipment based on optocoupler |
| CN203482233U (en) * | 2013-03-28 | 2014-03-12 | 施国君 | Direct connection type unidirectional optical fiber physical isolation shutter |
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2014
- 2014-06-25 CN CN201410287217.5A patent/CN104050419B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661542A (en) * | 2009-09-04 | 2010-03-03 | 天津光电通信技术有限公司 | Unidirectional introducing equipment of movable memory medium |
| CN102903074A (en) * | 2012-10-12 | 2013-01-30 | 湖南大学 | Image processing apparatus based on field-programmable gate array (FPGA) |
| CN203482233U (en) * | 2013-03-28 | 2014-03-12 | 施国君 | Direct connection type unidirectional optical fiber physical isolation shutter |
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