CN207637166U - A kind of finger venous device based on crypto module - Google Patents

Abstract

The utility model discloses a kind of finger venous device based on crypto module, the finger venous device include：Security control chip is connected by USB interface with crypto module by USB interface, Serial Peripheral Interface (SPI) or IC bus connection communication interface module, security control chip；Security control chip connects data memory module by Serial Peripheral Interface (SPI), and security control chip connects network communication module by Serial Peripheral Interface (SPI) or IC bus；Security control chip connects LCD MODULE by Serial Peripheral Interface (SPI), and security control chip connects key circuit module by input/output communication interface, and security control chip is connected with power circuit block.The crypto module, which can be built in, to be referred to inside venous device, or is designed to independent module, is connect by standard USB interface with venous device is referred to.The utility model compensates for the deficiency in existing equipment safety, improves the safety of single unit system.

Description

A kind of finger venous device based on crypto module

Technical field

The utility model is related to refer to vein field more particularly to a kind of finger venous device based on crypto module.

Background technology

Refer to vein identification technology and carries out authentication using the texture of finger vena blood vessel, it is harmless, have and is not easy The features such as being stolen, forging.The identification technology can be widely applied to the door in the fields such as bank finance, Guoan of government, education social security The identity identification systems such as access control system are more safer than the surface characteristics identification technology such as fingerprint recognition, iris recognition, efficient skills Art.

But in most of application, collected finger intravenous data is transmitted in grid with clear-text way With storage, if the safety of system network environment entirety is not high, destruction molecule may be got around in other ways refers to vein knowledge Not, so that the safety that have is not achieved in the identity identification system based on the technology.

Therefore, it is necessary to a kind of finger venous device having crypto module be provided, to refer to the transimission and storage of intravenous data Encipherment protection is provided, the security performance for referring to venous device is further increased.

Utility model content

The utility model provides a kind of finger venous device based on crypto module, and the utility model is by referring to vein dress Crypto module is centered, the deficiency in existing equipment safety is compensated for, improves the safety of single unit system, it is as detailed below Description：

A kind of finger venous device based on crypto module, the finger venous device include：

Security control chip passes through USB interface, Serial Peripheral Interface (SPI) or IC bus connection communication interface circuit mould Block, security control chip are connected by USB interface with crypto module；

Security control chip connects data memory module by Serial Peripheral Interface (SPI), and security control chip passes through serial peripheral Interface or IC bus connect network communication module；

Security control chip connects LCD MODULE by Serial Peripheral Interface (SPI), and security control chip passes through input and output Communication interface connects key circuit module, and security control chip is connected with power circuit block.

The crypto module, which can be built in, to be referred to inside venous device, or is designed to independent module, logical with venous device is referred to Cross standard USB interface connection.

Wherein, the network communication module includes：Wired network communication module, wireless wifi network communication module and have Line/wireless network control module.

Further, the crypto module includes：Cryptographic algorithm chip, usb communication circuit module, wherein：Cryptographic algorithm The model LQFP44 of chip；

The RXD pins of cryptographic algorithm chip pass sequentially through light emitting diode D1, resistance R3 connects 3.3V operating voltages；Password is calculated The USBDM pins of method chip be separately connected one end of capacitance C12, resistance R5 one end, capacitance C12 the other end ground connection；Resistance Another termination usb communication circuit module of R5；

The USBDP pins of cryptographic algorithm chip be separately connected one end of capacitance C13, one end of resistance R6, resistance R4 one End；The other end of capacitance C13 is grounded；Another termination 3.3V operating voltages of resistance R6；Another termination usb communication electricity of resistance R4 Road module；

One end of the USBR pins connection resistance R1 of cryptographic algorithm chip, one end of USBC pins connection capacitance C1, resistance It the other end of R1, another termination usb communication circuit module of capacitance C1 and is grounded simultaneously；

The power pins VDD of cryptographic algorithm chip connects 3.3V operating voltages, grounding pin GND is grounded；

The XTAL pins of cryptographic algorithm chip be separately connected one end of resistance R2, one end of crystal oscillator JZ1, capacitance C2 one The other end at end, capacitance C2 connects one end of capacitance C3 and is grounded；The other end of capacitance C3, the other end of crystal oscillator JZ1, resistance The other end of R2 is all connected with the EXTAL pins of cryptographic algorithm chip.

Wherein, the power circuit block includes：Resistance,

One end connection 5V power supplys of the resistance, the other end of the resistance respectively with the cathode of diode, third capacitance One end, the 4th capacitance one end and transformation chip input terminal be connected；The transformation chip output is electric with second respectively The one end for solving the positive terminal of capacitance, one end of the 5th capacitance and the 6th capacitance is connected；

The anode of the diode, the other end of the third capacitance, the other end of the 4th capacitance, the transformation core The ground terminal of piece, the negative pole end of second electrolytic capacitor, the 5th capacitance other end and the 6th capacitance other end It is grounded；The transformation chip exports 3.3V voltages.

The advantageous effect of technical solution provided by the utility model is：

1, this refers to venous device by built-in or external crypto module design, by collected finger intravenous data into Row encryption, then by network transmission and preserve；

2, since what is transmitted and preserve is all information after encryption, the peace using the system for referring to venous device has been ensured Quan Xing.

Description of the drawings

Fig. 1 is a kind of structure chart of the finger venous device based on crypto module；

Fig. 2 is the circuit diagram of crypto module；

Fig. 3 is the circuit diagram of power circuit block.

Specific implementation mode

To keep the purpose of this utility model, technical solution and advantage clearer, below to the utility model embodiment It is described in further detail.

Embodiment 1

A kind of finger venous device based on crypto module, referring to Fig. 1, this refers to venous device and includes：Security control chip 1, Crypto module 2, communication interface circuit module 3, network communication module 4, data memory module 5, LCD MODULE 6, button electricity Road module 7 and power circuit block 8.

Security control chip 1 passes through USB interface, Serial Peripheral Interface (SPI) or IC bus connection communication interface circuit mould Block 3, security control chip 1 are connected by USB interface with crypto module 2, and security control chip 1 is connected by Serial Peripheral Interface (SPI) Data memory module 5, security control chip 1 connect network communication module 4, peace by Serial Peripheral Interface (SPI) or IC bus Full control chip 1 connects LCD MODULE 6 by Serial Peripheral Interface (SPI), and security control chip 1 is connect by input/output communication Mouth connection key circuit module 7, security control chip 1 is connected with power circuit block 8.

Wherein, network communication module 4 includes：Wired network communication module, wireless wifi network communication module and wired/ Wireless network control module.

Wherein, crypto module 2 includes：Usb communication circuit module and cryptographic algorithm chip.Crypto module 2 can be built in finger Inside venous device；It may be designed as being independent module simultaneously, be connect by standard USB interface with venous device is referred to.

Security control chip 1 passes through usb communication module and cryptographic algorithm chip communication.Cryptographic algorithm chip for generate with Secret key, digital certificate are additionally operable to by calling commercial cipher algorithm to realize authentication and encryption and decryption.

Wherein, above-mentioned encryption and decryption, the flow of calling and cryptographic algorithm chip, commercial cipher algorithm etc. are this field Well known to technical staff, the utility model embodiment is only to have used existing software mature technology, and there is no appoint software What is improved.

In conclusion the utility model embodiment is compensated for existing by increasing crypto module in referring to venous device Deficiency on device security improves the safety of single unit system.

Embodiment 2

In order to further ensure the working effect of the finger venous device based on crypto module, the work for referring to venous device is improved The circuit of stability, crypto module of the utility model embodiment also to referring to venous device is improved, and referring to Fig. 2, is referred to It is described below：

Crypto module includes：Cryptographic algorithm chip U1, usb communication circuit module U3, wherein：The type of cryptographic algorithm chip U1 Number be LQFP44.

The RXD pins of cryptographic algorithm chip U1 pass sequentially through light emitting diode D1, resistance R3 connects 3.3V operating voltages；Password The USBDM pins of algorithm chip U1 be separately connected one end of capacitance C12, resistance R5 one end, capacitance C12 the other end ground connection； Another termination usb communication circuit module U3 of resistance R5；

The USBDP pins of cryptographic algorithm chip U1 are separately connected one end of capacitance C13, one end of resistance R6, resistance R4 One end；The other end of capacitance C13 is grounded；Another termination 3.3V operating voltages of resistance R6；Another termination usb communication of resistance R4 Circuit module U3；

One end of the USBR pins connection resistance R1 of cryptographic algorithm chip U1, one end of USBC pins connection capacitance C1, electricity It hinders the other end of R1, another termination usb communication circuit module U3 of capacitance C1 and is grounded simultaneously；

The power pins VDD of cryptographic algorithm chip U1 connects 3.3V operating voltages, grounding pin GND is grounded；

The XTAL pins of cryptographic algorithm chip U1 be separately connected one end of resistance R2, one end of crystal oscillator JZ1, capacitance C2 one The other end at end, capacitance C2 connects one end of capacitance C3 and is grounded；The other end of capacitance C3, the other end of crystal oscillator JZ1, resistance The other end of R2 is all connected with the EXTAL pins of cryptographic algorithm chip U1；The EINT pin of cryptographic algorithm chip U1 is for when debugging Download program code uses.

In conclusion the utility model embodiment is improved by the circuit of the crypto module to referring to venous device, carry It is high it is entire refer to the electrical stability of venous device, and then improve the safety of single unit system.

Embodiment 3

In order to further ensure the working effect of the finger venous device based on crypto module, the work for referring to venous device is improved Stability, the utility model embodiment also improve the power supply circuit for referring to venous device.As shown in figure 3, the power supply is electric Road module includes：

Resistance R4, diode D1, third capacitance C7, the 4th capacitance C8, transformation chip U2, the second electrolytic capacitor C9, the 5th Capacitance C10, the 6th capacitance C11.One end connection 5V power supplys of resistance R4, the other end of resistance R4 the moon with diode D1 respectively Pole, one end of third capacitance C7, one end of the 4th capacitance C8 and transformation chip U2 input terminal be connected；The U2 outputs of transformation chip End is connected with the positive terminal of the second electrolytic capacitor C9, one end of the 5th capacitance C10 and one end of the 6th capacitance C11 respectively；

The ground connection of the anode of diode D1, the other end of third capacitance C7, the other end of the 4th capacitance C8, transformation chip U2 End, the negative pole end of the second electrolytic capacitor C9, the 5th capacitance C10 other ends and the 6th capacitance C11 other ends are grounded；Transformation core Piece U2 exports 3.3V voltages.

In conclusion the utility model embodiment is improved whole by improving the power supply circuit for referring to venous device It is a to refer to the electrical stability of venous device, and then improve the safety of single unit system.

To the model of each device in addition to doing specified otherwise, the model of other devices does not limit the utility model embodiment System, as long as the device of above-mentioned function can be completed.

It will be appreciated by those skilled in the art that attached drawing is the schematic diagram of a preferred embodiment, above-mentioned the utility model is real It is for illustration only to apply a serial number, can not represent the quality of embodiment.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims (4)

1. a kind of finger venous device based on crypto module, which is characterized in that the finger venous device includes：

Security control chip passes through USB interface, Serial Peripheral Interface (SPI) or IC bus connection communication interface module, peace Full control chip is connected by USB interface with crypto module；

Security control chip connects data memory module by Serial Peripheral Interface (SPI), and security control chip passes through Serial Peripheral Interface (SPI) Or IC bus connects network communication module；

Security control chip connects LCD MODULE by Serial Peripheral Interface (SPI), and security control chip passes through input/output communication Interface connects key circuit module, and security control chip is connected with power circuit block；

The crypto module, which is built in, to be referred to inside venous device, or is standalone module, passes through standard USB interface with venous device is referred to Connection.

2. a kind of finger venous device based on crypto module according to claim 1, which is characterized in that the network communication Module includes：Wired network communication module, wireless wifi network communication module and wire/radio network control module.

3. a kind of finger venous device based on crypto module according to claim 1, which is characterized in that the crypto module Including：Cryptographic algorithm chip, usb communication circuit module, wherein：The model LQFP44 of cryptographic algorithm chip；

The RXD pins of cryptographic algorithm chip pass sequentially through light emitting diode D1, resistance R3 connects 3.3V operating voltages；Cryptographic algorithm core The USBDM pins of piece be separately connected one end of capacitance C12, resistance R5 one end, capacitance C12 the other end ground connection；Resistance R5's Another termination usb communication circuit module；

The USBDP pins of cryptographic algorithm chip be separately connected one end of capacitance C13, one end of resistance R6, resistance R4 one end；Electricity Hold the other end ground connection of C13；Another termination 3.3V operating voltages of resistance R6；Another termination usb communication circuit mould of resistance R4 Block；

One end of the USBR pins connection resistance R1 of cryptographic algorithm chip, one end of USBC pins connection capacitance C1, resistance R1's The other end, capacitance C1 another termination usb communication circuit module and be grounded simultaneously；

The power pins VDD of cryptographic algorithm chip connects 3.3V operating voltages, grounding pin GND is grounded；

The XTAL pins of cryptographic algorithm chip be separately connected one end of resistance R2, one end of crystal oscillator JZ1, capacitance C2 one end, electricity Hold one end of the other end connection capacitance C3 of C2 and is grounded；The other end of capacitance C3, the other end of crystal oscillator JZ1, resistance R2 it is another One end is all connected with the EXTAL pins of cryptographic algorithm chip.

4. a kind of finger venous device based on crypto module according to any claim in claims 1 to 3, feature It is, the power circuit block includes：Resistance,

One end connection 5V power supplys of the resistance, the other end of the resistance respectively with the cathode of diode, third capacitance one The input terminal at end, one end of the 4th capacitance and transformation chip is connected；The transformation chip output is electric with the second electrolysis respectively One end of the positive terminal of appearance, one end of the 5th capacitance and the 6th capacitance is connected；

The anode of the diode, the other end of the third capacitance, the other end of the 4th capacitance, the transformation chip Ground terminal, the negative pole end of second electrolytic capacitor, the 5th capacitance other end and the 6th capacitance other end connect Ground；The transformation chip exports 3.3V voltages.