CN207123837U - Safe electronic signature system - Google Patents
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- CN207123837U CN207123837U CN201720525794.2U CN201720525794U CN207123837U CN 207123837 U CN207123837 U CN 207123837U CN 201720525794 U CN201720525794 U CN 201720525794U CN 207123837 U CN207123837 U CN 207123837U
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Abstract
The utility model discloses a kind of safe electronic signature system to include touch-screen, display, encrypting module, main frame, server, it is characterised in that：Control module is echoed including signature, the touch-screen is connected with encrypting module, touch-screen is connected with signature echo control module, encrypting module is connected with main frame, signature echo control module be connected with encrypting module with communication cable or sign echo control module be connected with main frame with communication cable, signature echo control module is connected with main frame with video cables, and display is connected with signature echo control module, and main frame is connected with server.The utility model realizes that simple, cost is low, electronic signature is safe, can also realize dummy keyboard key assignments echo safety problem, non-apparent problem, greatly promotes the Information Security and convenience of financial system, government system etc..
Description
Technical field
A kind of safe electronic signature system is the utility model is related to, belongs to field of information security technology.
Background technology
Signing electronically, it is more and more to be applied in every each industry such as financial system, government system, and electronic signature is easy to business certainly
Help, be easy to store, be easy to transmit, be easy to follow the trail of, be easy to it is with no paper, be advantageous to client and give sympathetic consideration to and environmental protection, but it is implemented and application
Need network support, rely on the network operation, and it is also a kind of personal biological information to sign, security is highly desirable, special
It is not that security capital is relatively limited and be not easy numerous system terminals, the transmission link prevented, potential safety hazard is often present.
Electronic signature application at present, or without secrecy provision, or secrecy provision existing defects or cost are too high.
Existing electronic signature is directly being installed on touching on the display being also connected with main frame installed in what is be connected with main frame
Touch screen (such as the various touch-screens such as electromagnetic screen or capacitance plate) and implement the hand-written electronic writing signature generation label with special pens or hand
Name initial data, signature initial data, which is delivered to, meets that the hardware encryption module of specification is encrypted to form signature hardware encryption number by specification
According to, but need decryption to be echoed with the initial data that obtains signing for host computer control after signature hardware encrypted data transmission to the main frame
To the display being connected with main frame, because main frame is to be connected with network and operated by traffic operation staff, thus exist very
Big potential safety hazard, hardware encryption measures above perform practically no function；Main frame is transmitted to the signed data of background server and is also used in
The signature initial data that main frame decrypts is processed, is encrypted to form sign software encryption data in a manner of software cryptography again again
Server is delivered to, is had a greatly reduced quality because employing software cryptography mode its security compared with the safety coefficient that hardware is encrypted.
Also electronic signature product realizes that signature initial data is obtained and signed directly in the standalone module departed from network
Name track is shown, independent of host display, the passage for original data transmissions of not signed with the main frame with network connection, is passed
The signed data for transporting to main frame be by hardware encrypt hardware encryption data, but exist cost is too high, be not easy to popularization and
It is unable to the shortcomings that practical business operation needs.
Equally, as the service terminal such as Electronic Development, finance, E-Government inputs the conventional entity keyboard of password
Also develop to the dummy keyboard direction realized with touch-screen, there is also above-mentioned key assignments echo safety problem for the implementation of dummy keyboard
And not apparent problem be present.
The content of the invention
The purpose of this utility model is to overcome above mentioned problem existing for prior art, there is provided a kind of safe electronic signature system
System, solve it is existing electronic signature be encrypted in business main frame and transmission in safety defect, solve it is existing one signature track echo into
This is higher than the shortcomings that high, to meet to realize that simple, cost is low, meets the safety that signs electronically, can also realize dummy keyboard key
Value echo safety problem, the Information Security of non-apparent problem, lifting financial system, government system etc. and convenience.
To achieve the above object, the technical solution adopted in the utility model is as follows：
The utility model safe electronic signature system includes touch-screen, display, encrypting module, main frame, server, and it is special
Sign is：Control module is echoed including signature, the touch-screen is connected with encrypting module, touch-screen and signature echo control module
It is connected, encrypting module is connected with main frame, and signature echo control module, which is connected with encrypting module or signed with communication cable, echoes control
Molding block is connected with main frame with communication cable, and signature echo control module is connected with main frame with video cables, display and signature
Echo control module is connected, and main frame is connected with server.
The signature echo control module is connected with display with MIPI or LVDS or VGA or DVI or HDMI, described
Signature echo control module is connected with main frame with MIPI or LVDS or VGA or DVI or HDMI.
The signature echo control module is connected with touch-screen with serial ports or I2C or USB or SPI interface, described to sign back
Aobvious control module is connected with main frame with serial ports or I2C or USB or SPI interface.
The safe electronic signature system, it is characterised in that：The touch-screen be electromagnetic screen or capacitance plate or sound wave screen or
Infrared screen or touch screens.
The encrypting module includes state Data Encryption Standard IC.
The signature echo control module is connected with touch-screen with serial ports or I2C or USB or SPI interface, described to sign back
Aobvious control module is connected with encrypting module with serial ports or I2C or USB or SPI interface, and the touch-screen is with encrypting module with serial ports
Or I2C or USB or SPI interface are connected.
The signature echo control module includes the data storage of a storage at least two field picture.
The data storage is DDRM memories or SDRAM memory.
The display includes the combination of liquid crystal panel or liquid crystal panel and display control circuit.
Using the utility model has the advantage of：
1st, in the utility model, safe electronic signature system includes touch-screen, display, encrypting module, main frame, service
Device, it is characterised in that：Control module is echoed including signature, the touch-screen is connected with encrypting module, and touch-screen echoes with signature
Control module is connected, and encrypting module is connected with main frame, and signature echo control module is connected or signed with communication cable with encrypting module
Name echo control module is connected with main frame with communication cable, and signature echo control module is connected with main frame with video cables, is shown
Device with signature echo control module be connected, main frame is connected with server, can simply, low cost, application solutions sign electronically, go back
Dummy keyboard key assignments echo safety problem, the information security of non-apparent problem, lifting financial system, government system etc. can be realized
Property and convenience.
2nd, in the utility model, signature echo control module and the display with MIPI or LVDS or VGA or DVI or
HDMI is connected, and the signature echo control module is connected with main frame with MIPI or LVDS or VGA or DVI or HDMI,
Video interface enriches, and washability is more, be easy to implement, cost it is controllable.
3rd, in the utility model, the signature echo control module is with touch-screen with serial ports or I2C or USB or SPI interface
It is connected, the signature echo control module is connected with main frame with serial ports or I2C or USB or SPI interface, and communication interface enriches, can
The property selected is more, be easy to implement, cost it is controllable.
4th, in the utility model, the safe electronic signature system, it is characterised in that：The touch-screen is electromagnetic screen or electricity
Hold screen or sound wave screen or infrared screen or touch screens, touch-screen is optional more, is not limited to specific touch screen, is easy to implement.
5th, in the utility model, the encrypting module includes state Data Encryption Standard IC, is easy to meet national encryption standard.
6th, in the utility model, the signature echo control module is with touch-screen with serial ports or I2C or USB or SPI interface
Be connected, it is described signature echo control module be connected with encrypting module with serial ports or I2C or USB or SPI interface, the touch-screen and
Encrypting module is connected with serial ports or I2C or USB or SPI interface, and the communication for reducing signature echo control module and main frame connects, and has
Beneficial to reducing cost and attractive in appearance and reliability.
7, in the utility model, the signature echo control module includes the data storage of a storage at least two field picture,
To realize the temporary or temporary of image, the picture editting in image data memory is further realized with electronic signature data, is reached
View data reading image is write to the display of electronic signature track, or without picture editting, directly by data storage
Data realize the effect that image directly transmits.
8, in the utility model, the data storage is DDRM memories or SDRAM memory, realizes no write de-lay number
According to memory, quick read data memory, reach image and show and sign electronically the smooth effect that track is shown.
9, in the utility model, the display includes the combination of liquid crystal panel or liquid crystal panel and display control circuit,
Easily display control circuit can be set in the display or is not provided with to be set directly at signature echo in the display
In control module or directly substituted and realized by signature echo control module, with reach be easy to implement, cost-effective effect.
Brief description of the drawings
Fig. 1 is existing electric signing system figure
Fig. 2 is the utility model safe electronic signature system figure
Fig. 3 is signature echo control module case study on implementation
Fig. 4 is safe electronic signature system figure of the utility model based on Fig. 3 signature echo control module case study on implementation
In figure mark for：1st, touch-screen, 2, display, 3, encrypting module, 4, main frame, 5, server, 6, signature echo control
Molding block.
Embodiment
The utility model safe electronic signature system includes touch-screen 1, display 2, encrypting module 3, main frame 4, server
5, it is characterised in that：Control module 6 is echoed including signature, the touch-screen 1 is connected with encrypting module 3, and touch-screen 1 is with signing back
Aobvious control module 6 is connected, and encrypting module 3 is connected with main frame 4, and signature echo control module 6 is with encrypting module 3 with communication cable phase
Even or signature echo control module 6 is connected with main frame 4 with communication cable, and signature echo control module 6 is with main frame 4 with video cables
It is connected, display 2 is connected with signature echo control module 6, and main frame 4 is connected with server 5.
Signature echo control module 6 realize main frame 4 send to display 2 video signal format conversion and directly transmit or
Keep in or directly cover signature area video signal.During non-electronic signature, signature echo control module 6 realize main frame 4 send to
The vision signal of display 2 is directly transmitted；During electronic signature, signature echo control module 6 receives the vision signal from main frame 4
And keep in, signature echo control module 6 is changed temporary video according to the signature initial data from touch-screen 1 received and believed
The vision signal of correspondence position is denoted as track of signing in number corresponding signature window frame, and by the temporary vision signal after real time modifying
Send to display 2 and show；During electronic signature, signature echo control module 6 receives the vision signal from main frame 4, signs back
Aobvious control module 6 is believed according to the video of the covering signature region correspondence position of the signature initial data from touch-screen 1 received
Track of signing number is denoted as, and the vision signal after real time modifying is sent to display 2 and shown.So-called vision signal is temporary to be
Refer to and a frame of vision signal or several frame data are stored in memory and can be read out.
Similarly, it is possible to achieve dummy keyboard key assignments safety echo, not apparent problem.Signature echo control module 6 realizes master
Machine 4, which is sent to the video signal format of display 2, to be changed and directly transmits or keep in or cover dummy keyboard area video signal.
During non-virtual input through keyboard, signature echo control module 6 is realized that main frame 4 is sent to the vision signal of display 2 and directly transmitted；It is empty
When intending input through keyboard, signature echo control module 6 receives the vision signal from main frame 4 and kept in, signature echo control module 6
Corresponded to according to the temporary vision signal of the modification of the signature initial data from touch-screen 1 received corresponding in dummy keyboard window frame
The vision signal of position is denoted as dummy keyboard key assignments or key assignments represents symbol, and the temporary vision signal after real time modifying is sent
Shown to display 2；When dummy keyboard inputs, signature echo control module 6 receives the vision signal from main frame 4, signs back
Aobvious control module 6 is according to correspondence position video in the covering dummy keyboard frame of the signature initial data from touch-screen 1 received
Signal signature is that dummy keyboard key assignments or key assignments represent symbol, and the vision signal after real time modifying is sent to display 2 and shown.
Signature echo control module 6 includes video format conversion chip, memory, microprocessor, power conversion chip.Depending on
Frequency form conversion chip realizes that video signal format conversion, vision signal covering editor or vision signal are kept in, using REALTEK
The model chip such as the model chips such as company RTD2281, RTD2660 or MSTAR company's Ts SUMU58MDT3 or other companies are similar
Video format conversion chip；Memory is using storage chips such as EN25F20；Microprocessor is public using STMicroelectronics
The single-chip microcomputer such as the arm processor such as STM32F405, STM32F407 of department model chip or Silicon Labs company C8051F340
Or the arm processor such as SIM3U166 or the single-chip microcomputer of other companies, arm processor, DSP Processor；Power conversion chip uses
The DC-DC conversion chips such as MIC5205, MIC5209, realize that power supply 12V is converted in signature echo control module 6 needed for device
5V, 3.3V operating voltage.Signed data of the signature echo control module 6 based on touch-screen 1 produces signature track and the rail that will sign
Mark is shown on a display 2.The signature echo case study on implementation of control module 6 is shown in Fig. 3, is signed based on Fig. 3 and echoes control module implementation
The safe electronic signature system figure of case is shown in Fig. 4.
Signature echo control module 6 can select video format is changed, the collection that memory, microprocessor integrate
Into chip, such as CV2880 or CHRONTEL companies CH7038 chips.
, can be by usb hub and then by 1 USB to reduce connecting line when access host 4 has multiple USB devices
Cable is connected to main frame 4, and usb hub is separately provided or is arranged in signature echo control module 6 or is arranged on encrypting module 3
In.
Embodiment 1
The utility model safe electronic signature system includes touch-screen 1, display 2, encrypting module 3, main frame 4, server
5, including signature echo control module 6, touch-screen 1 is connected with encrypting module 3 with serial ports (UART) interface, and (serial ports includes touch-screen
1 transmitting TXD, receive RXD), touch-screen 1 is connected with signature echo control module 6 with serial ports, and (serial ports only includes touch-screen 1
Launch TXD), encrypting module 3 is connected with main frame 4 with USB, and signature echo control module 3 is with encrypting module 3 with unidirectional serial interface
Mouth (serial ports only includes the transmitting TXD of encrypting module 3, does not include the reception RXD of encrypting module 3) is connected, signature echo control mould
Block 3 is connected with main frame 4 with DVI video interfaces, and display 2 is connected with signature echo control module 6 with DVI video interfaces, main frame 4
It is connected with server 5 with network.
When business needs electronic signature, main frame 4 starts signature process, by signing echo control module 6 on a display 2
Open signature prompt customer signature while send signature window position information and forwarded to encrypting module 3 and by encrypting module 3
Control module 6 is echoed to signature, customer implements signature with signature pen on touch-screen 1 and produces signature initial data, and signature is original
Data deliver to signature echo control module 6, and signature echo control module 6 is according to obtained signature initial data and signature window position
The DVI video informations that confidence ceases and read in update DVI video informations with initial data of signing, and are then sent to display 2 and show,
Show signature track；Signature initial data is delivered to encrypting module 3 and is encrypted using the close SM4 of state and sent out by USB interface in real time simultaneously
Main frame 4 is delivered to, main frame 4 is forwarded to service 5 by network transmission.Lasting signature, until the confirmation on customer's point touching screen 1 is pressed
Button；Cancel or delete button as customer clicks on, signature echo control module 6 initializes the signature window on display 2.
Hardware ciphering signature of the main frame 4 from encrypting module 3 meets safety standard, main frame 4 and signature echo control
The communication signal of module 3 is that main frame 4 to signature echo control module 3 one-way transmission, main frame 4 can not receive signature echo control module
3 communication signal, that is, touch-screen 1 to main frame 4 is safe；Hardware encryption data of signing is in main frame without any processing
Signed data met that state is close in main frame and network transmission process and added firmly directly by forwarded to server (meeting decryption)
Data Encryption Standard, meet security mechanism.
Embodiment 2
The utility model safe electronic signature system includes touch-screen 1, display 2, encrypting module 3, main frame 4, server
5, including signature echo control module 6, touch-screen 1 is connected with encrypting module 3 with serial ports (UART) communication interface, and (serial ports includes touching
Touch the transmitting TXD of screen 1, receive RXD), touch-screen 1 is connected with signature echo control module 6 with serial ports, and (serial ports only includes touch-screen
1 transmitting TXD), encrypting module 3 is connected with main frame 4 with USB, and signature echo control module 3 is with main frame 4 with serial line interface (serial ports
Only include the transmitting TXD of main frame 4, do not include the reception RXD of main frame 4) it is connected, signature echo control module 3 is with main frame 4 with DVI
Video interface is connected, and display 2 is connected with signature echo control module 6 with DVI video interfaces, and main frame 4 is with server 5 with network
It is connected.
When business needs electronic signature, main frame 4 starts signature process, by signing echo control module 6 on a display 2
Open signature prompt customer signature while send signature window position information to echo control module 6 of signing, customer is tactile
Touch to implement to sign with signature pen on screen 1 and produce signature initial data, signature initial data delivers to signature and echoes control module 6, label
Name echo control module 6 is according to obtained signature initial data and signature window position information and the DVI video informations of reading
With initial data renewal DVI video informations of signing, it is then sent to display 2 and shows, shows signature track；Initial data of signing is same
When deliver to encrypting module 3 and be temporarily stored into encrypting module 3, the signature to be obtained sent from touch-screen 1 completes information (point touching screen
ACK button on 1) encrypt and sent by USB interface to main frame 4, main frame 4 using the close SM4 of state afterwards and forwarded by network transmission
To service 5, encrypting module 3 deletes the signature initial data for being temporarily stored in encrypting module 3.
Signature process such as customer, which clicks on, cancels or deletes button, and signature echo control module 6 initializes the label on display 2
Name window, and send a command to encrypting module 3 and remove temporary signature initial data, wait new round electronic signature process.
Hardware ciphering signature of the main frame 4 from encrypting module 3 meets safety standard, main frame 4 and signature echo control
The communication signal of module 3 is that main frame 4 to signature echo control module 3 one-way transmission, main frame 4 can not receive signature echo control module
3 communication signal, that is, touch-screen 1 to main frame 4 is safe；Hardware encryption data of signing is in main frame without any processing
Signed data met that state is close in main frame and network transmission process and added firmly directly by forwarded to server (meeting decryption)
Data Encryption Standard, meet security mechanism.
Embodiment 3
The utility model safe electronic signature system includes touch-screen 1, display 2, encrypting module 3, main frame 4, server
5, including sign and echo control module 6, touch-screen 1 is connected with encrypting module 3 with I2C communication interfaces, and touch-screen 1 echoes with signature
Control module 6 is connected (serial ports only includes the transmitting TXD of touch-screen 1) with serial ports, and encrypting module 3 is connected with main frame 4 with USB, label
With serial line interface, (serial ports only includes the transmitting TXD of main frame 4 to name echo control module 3, does not include the reception of main frame 4 with main frame 4
RXD) it is connected, signature echo control module 3 is connected with main frame 4 with VGA video interfaces, display 2 and signature echo control module 6
It is connected with VGA video interfaces, main frame 4 is connected with server 5 with network.
When business needs electronic signature, main frame 4 starts signature process, by signing echo control module 6 on a display 2
Open signature prompt customer signature while send signature window position information to echo control module 6 of signing, customer is tactile
Touch to implement to sign with signature pen on screen 1 and produce signature initial data, signature initial data delivers to signature and echoes control module 6, label
Name echo control module 6 is according to obtained signature initial data and signature window position information and the VGA video informations of reading
With initial data renewal VGA video informations of signing, it is then sent to display 2 and shows, shows signature track；Initial data of signing is same
When deliver to encrypting module 3 and encrypt and sent by USB interface to main frame 4, main frame 4 using the close SM4 of state in real time and pass through network transmission
It is forwarded to service 5.Lasting signature, the ACK button on customer's point touching screen 1；Pressed as customer clicks on to cancel or delete
Button, signature echo control module 6 initialize the signature window on display 2.
Hardware ciphering signature of the main frame 4 from encrypting module 3 meets safety standard, main frame 4 and signature echo control
The communication signal of module 3 is that main frame 4 to signature echo control module 3 one-way transmission, main frame 4 can not receive signature echo control module
3 communication signal, that is, touch-screen 1 to main frame 4 is safe；Hardware encryption data of signing is in main frame without any processing
Signed data met that state is close in main frame and network transmission process and added firmly directly by forwarded to server (meeting decryption)
Data Encryption Standard, meet security mechanism.
Embodiment 4
The utility model safe electronic signature system includes touch-screen 1, display 2, encrypting module 3, main frame 4, server
5, including signature echo control module 6, touch-screen 1 is connected with encrypting module 3 with serial ports (UART) communication interface, and (serial ports includes touching
Touch the transmitting TXD of screen 1, receive RXD), touch-screen 1 and signature are echoed control module 6 and are connected that (main frame 4 is only with USB to label with USB
Name echo control module 6 unidirectionally sends user data, does not receive user data), encrypting module 3 is connected with main frame 4 with USB, label
With serial line interface, (serial ports only includes the transmitting TXD of main frame 4 to name echo control module 3, does not include the reception of main frame 4 with main frame 4
RXD) it is connected, signature echo control module 3 is connected with main frame 4 with DVI video interfaces, display 2 and signature echo control module 6
It is connected with DVI video interfaces, main frame 4 is connected with server 5 with network.
When business needs electronic signature, main frame 4 starts signature process, by signing echo control module 6 on a display 2
Open signature prompt customer signature while send signature window position information to echo control module 6 of signing, customer is tactile
Touch to implement to sign with signature pen on screen 1 and produce signature initial data, signature initial data delivers to signature and echoes control module 6, label
Name echo control module 6 is according to obtained signature initial data and signature window position information and the DVI video informations of reading
With initial data renewal DVI video informations of signing, it is then sent to display 2 and shows, shows signature track；Initial data of signing is same
When deliver to encrypting module 3 and be temporarily stored into encrypting module 3, the signature to be obtained sent from touch-screen 1 completes information (point touching screen
ACK button on 1) encrypt and sent by USB interface to main frame 4, main frame 4 using the close SM4 of state afterwards and forwarded by network transmission
To service 5, encrypting module 3 deletes the signature initial data for being temporarily stored in encrypting module 3.
Signature process such as customer, which clicks on, cancels or deletes button, and signature echo control module 6 initializes the label on display 2
Name window, and send a command to encrypting module 3 and remove temporary signature initial data, wait new round electronic signature process.
Hardware ciphering signature of the main frame 4 from encrypting module 3 meets safety standard, main frame 4 and signature echo control
The communication signal of module 3 is that main frame 4 to signature echo control module 3 one-way transmission, main frame 4 can not receive signature echo control module
3 communication signal, that is, touch-screen 1 to main frame 4 is safe；Hardware encryption data of signing is in main frame without any processing
Signed data met that state is close in main frame and network transmission process and added firmly directly by forwarded to server (meeting decryption)
Data Encryption Standard, meet security mechanism.
The utility model case study on implementation is formed by above but not only limiting above-mentioned case study on implementation, can be by the utility model technology
Scheme simple diffractive goes out more kinds of case study on implementation.
Claims (9)
1. a kind of safe electronic signature system, including main frame (4), touch-screen (1), display (2), encrypting module (3), server
(5), it is characterised in that：Including signature echo control module (6), the touch-screen (1) is connected with encrypting module (3), touch-screen
(1) it is connected with echo control module (6) of signing, encrypting module (3) is connected with main frame (4), and signature echo control module (6) is with adding
Close module (3) is connected, and signature echo control module (6) is connected with main frame (4), display (2) and signature echo control module (6)
It is connected, main frame (4) is connected with server (5).
2. safe electronic signature system according to claim 1, it is characterised in that：It is described signature echo control module (6) with
Display (2) is connected with MIPI or LVDS or VGA or DVI or HDMI, the signature echo control module (6) and main frame
(4) it is connected with MIPI or LVDS or VGA or DVI or HDMI.
3. safe electronic signature system according to claim 1, it is characterised in that：It is described signature echo control module (6) with
Touch-screen (1) is connected with serial ports or I2C or USB or SPI interface, and the signature echo control module (6) is with main frame (4) with serial ports
Or I2C or USB or SPI interface are connected.
4. safe electronic signature system according to claim 1, it is characterised in that：The touch-screen (1) is electromagnetic screen or electricity
Hold screen or sound wave screen or infrared screen or touch screens.
5. safe electronic signature system according to claim 1, it is characterised in that：The encrypting module (3) includes state's secret mark
Quasi- IC.
6. safe electronic signature system according to claim 1, it is characterised in that：It is described signature echo control module (6) with
Touch-screen (1) is connected with serial ports or I2C or USB or SPI interface, it is described signature echo control module (6) with encrypting module (3) with
Serial ports or I2C or USB or SPI interface are connected, and the touch-screen (1) is connect with encrypting module (3) with serial ports or I2C or USB or SPI
Mouth is connected.
7. safe electronic signature system according to claim 1, it is characterised in that：Signature echo control module (6) bag
The data storage of an at least two field picture containing storage.
8. safe electronic signature system according to claim 7, it is characterised in that：The data storage is DDRM memories
Or SDRAM memory.
9. safe electronic signature system according to claim 1, it is characterised in that：The display (2) includes liquid crystal panel
Or the combination of liquid crystal panel and display control circuit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620847091 | 2016-08-08 | ||
| CN201620847091.7 | 2016-08-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207123837U true CN207123837U (en) | 2018-03-20 |
Family
ID=61614936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720525794.2U Active CN207123837U (en) | 2016-08-08 | 2017-05-12 | Safe electronic signature system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207123837U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109951460A (en) * | 2019-03-07 | 2019-06-28 | 成都麦动信息技术有限公司 | Safety information system |
-
2017
- 2017-05-12 CN CN201720525794.2U patent/CN207123837U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109951460A (en) * | 2019-03-07 | 2019-06-28 | 成都麦动信息技术有限公司 | Safety information system |
| CN109951460B (en) * | 2019-03-07 | 2019-12-24 | 成都麦动信息技术有限公司 | Security information system |
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| GR01 | Patent grant |