CN208240108U - Fingerprint entrance guard system based on cryptographic fingerprint mould group - Google Patents
Fingerprint entrance guard system based on cryptographic fingerprint mould group Download PDFInfo
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- CN208240108U CN208240108U CN201820807543.8U CN201820807543U CN208240108U CN 208240108 U CN208240108 U CN 208240108U CN 201820807543 U CN201820807543 U CN 201820807543U CN 208240108 U CN208240108 U CN 208240108U
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- fingerprint
- mould group
- microprocessor
- entrance guard
- fingerprint mould
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Abstract
Fingerprint entrance guard system based on cryptographic fingerprint mould group, including microprocessor, fingerprint mould group, automatically controlled lock module, keyboard, power-supply system, the fingerprint mould group, automatically controlled lock module, keyboard, power-supply system are connect with microprocessor, the fingerprint mould group includes: safe encryption hardware, for the equipment validity with microprocessor communication verifying microprocessor and fingerprint mould group；Fingerprint Processing Module is identified for the acquisition of fingerprint characteristic, is stored, management.The utility model improves the safety of fingerprint entrance guard system by verifying the legitimacy of equipment.
Description
Technical field
The utility model belongs to fingerprint entrance guard system technical field, and in particular to a kind of fingerprint based on cryptographic fingerprint mould group
Access control system.
Background technique
Fingerprint is the lines of the convex recessed injustice of the positive surface skin of finger tips, although fingerprint is a small portion of human skin
Point, still, it contains a large amount of information, these lines be on pattern, breakpoint and intersection point it is different, in information processing
They are referred to as " feature ", these medically verified features are different each finger, and these features have
There is uniqueness and permanent, therefore a people can be mapped with his fingerprint, by comparing his fingerprint characteristic and pre-
The fingerprint characteristic first saved, so that it may verify his true identity.The hardware of fingerprint entrance guard system is mainly by microprocessor, fingerprint
The composition such as mould group, LCD MODULE, keyboard, real-time clock/calendar chip, electric control lock and power supply.Microprocessor is as system
Host computer, be whole system microprocessor.Fingerprint mould group mainly completes the function such as registration, verifying, storage, the deletion of fingerprint characteristic
Energy.
When the microprocessor of fingerprint entrance guard system is communicated with fingerprint mould group end, usually transmitted with plaintext version.It is a small number of
Product can encrypt communication data using Encryption Algorithm to guarantee safety, there are two types of cipher mode is general:
The first is all encrypted to all communication datas.Firstly, every time to communication data encryption and decryption to interactive speed
Have an impact, secondly, comparing symmetric encipherment algorithm, rivest, shamir, adelman speed is slower, this results in Encryption Algorithm that can only use
Symmetric encipherment algorithm, the safety of Encryption Algorithm will receive limitation.
Second is to carry out once signed verifying at regular intervals between microprocessor and fingerprint mould group end, general to set
At the beginning and end registered or verified.Compared to first way, encryption and decryption number reduces, and interactive speed has greatly
Improve.But between signature verification twice, if accessing illegal master control or fingerprint mould group, security risk is had.
Fingerprint entrance guard system replaces traditional key with finger at present, and operation is very easy, but still there are some defects.
The shortcomings that prior art, is as follows:
1, it is transmitted when the microprocessor of most products is communicated with fingerprint mould group end with plaintext version, it cannot be guaranteed that the peace of information
Quan Xing；
2, after Encryption Algorithm is added, frequent encryption and decryption ensure that information security, but the execution speed of system is dropped
It is low；
3, after Encryption Algorithm is added, between specific encryption and decryption, it is easily accessed illegality equipment, there are security breaches；
4, cipher mode is simple, single；
Though 5, being both hardware encryption, portioned product is easy to crack.
Summary of the invention
To solve the above problem existing for present technology, the utility model provide it is a kind of it is highly-safe, flexibility is good, when
Good, fast response time the fingerprint entrance guard system based on cryptographic fingerprint mould group of effect property.
The technical solution adopted in the utility model is:
Based on the fingerprint entrance guard system of cryptographic fingerprint mould group, including microprocessor, fingerprint mould group, automatically controlled lock module, keyboard,
Power-supply system, the fingerprint mould group, automatically controlled lock module, keyboard, power-supply system are connect with microprocessor, it is characterised in that: institute
Stating fingerprint mould group includes:
Safe encryption hardware, for the equipment validity with microprocessor communication verifying microprocessor and fingerprint mould group；Refer to
Line processing module is identified for the acquisition of fingerprint characteristic, is stored, management.
Further, the safe encryption hardware use hardware encryption chip, the utility model encryption and decryption operation be all
It is carried out in hardware encryption chip, ensure that the response speed of system.
It further, is ciphertext transmission between the safe encryption hardware and microprocessor.
Further, it is also connected with clock module and LCD MODULE on the microprocessor, clock module mentions for system
For accurate clock signal, in use, system can be shown by LCD MODULE.
Further, the fingerprint entrance guard system further includes mechanical structure, and the mechanical structure includes that shell, structure are fixed
Part, mechanical fixed part, the microprocessor, fingerprint mould group, automatically controlled lock module, keyboard, power-supply system are by corresponding structure
Fixing piece, mechanical fixed part are immobilized in the shell.
Further, the automatically controlled lock module is the electromagnetic lock module controlled by relay, is used to access control system switching.
Further, the power-supply system includes that AC turns DC power module and redundant electrical power module, when routine use, passes through AC
Turn DC power module power supply, when power failure, only makees Emergency use using redundant electrical power module.
The beneficial effects of the utility model are:
1, when the microprocessor of access control system is communicated with fingerprint mould group, hardware encryption is more safer in time；
2, after hardware encryption is added, existing registration and search step be will not influence；
3, it can satisfy different applications using different cipher modes.
Detailed description of the invention
Fig. 1 is the hardware structural diagram of the utility model.
Fig. 2 is the electric connection structure schematic diagram of the utility model.
Fig. 3 is the hardware structural diagram of the fingerprint mould group of the utility model.
Fig. 4 is the flow diagram of the secure registration fingerprint of the utility model.
Fig. 5 is the flow diagram of the safety search fingerprint of the utility model.
Specific embodiment
Combined with specific embodiments below the utility model to be further described, but the utility model is not limited to
In these specific embodiments.One skilled in the art would recognize that the utility model covers in Claims scope
All alternatives, improvement project and the equivalent scheme that may include.
Referring to Fig. 1-3, a kind of fingerprint entrance guard system based on cryptographic fingerprint mould group, including micro process are present embodiments provided
Device 16, fingerprint mould group 17, automatically controlled lock module 13, keyboard 15, power-supply system 12, clock module 14, LCD MODULE 18, machinery
Structure 11, the fingerprint mould group 17, automatically controlled lock module 13, keyboard 15, power-supply system 12, clock module 14 and LCD MODULE
18 connect with microprocessor 16.
Wherein: mechanical structure 11: predominantly system provides structural housing, and structure is fixed, and is mechanically fixed and waits components；Machinery knot
Structure 11 includes shell, structural mount, mechanical fixed part, the microprocessor 16, fingerprint mould group 17, automatically controlled lock module 13, key
Disk 15, power-supply system 12, clock module 14 and LCD MODULE 18 are solid by corresponding structural mount, mechanical fixed part
It is scheduled in shell 11, can be configured by existing fingerprint entrance guard system.
Power-supply system 12: the power module includes that AC turns DC power module and redundant electrical power module, when routine use, is led to
It crosses AC and turns DC power module power supply, when power failure, only make Emergency use using redundant electrical power module.
Automatically controlled lock module 13: it is the electromagnetic lock module controlled by relay, is used to access control system switching.
Clock module 14: accurate system time is provided for system.
Keyboard 15: keyboard is mainly to provide the approach of human-computer interaction, can input password, setting system by keyboard user
System, Configuration Management Officer account number etc..
Microprocessor 16: being the core of the control system of system, is used to control system.
Fingerprint mould group 17: the main acquisition for completing fingerprint characteristic, identification, storage, the functions such as management.
LCD MODULE 18: display access control system current state shows time, display system configuration etc., is easy to use
Person carries out human-computer interaction.
Fingerprint mould group 17 described in the present embodiment includes: safe encryption hardware 171, for micro- with 16 authentication of microprocessor
The equipment validity of processor 16 and fingerprint mould group 17；Fingerprint Processing Module 172, for the acquisition of fingerprint characteristic, identification is deposited
Storage, management.The safe encryption hardware 171 uses hardware encryption chip, and the encryption and decryption operation of the utility model is all in hardware
It is carried out in encryption chip, ensure that the response speed of system.It is ciphertext between the safe encryption hardware 171 and microprocessor 16
Transmission.The fingerprint mould group 17 of the utility model can greatly realize that fingerprint stores by hardware encryption, than the safety of equity.
When the utility model is used, user uses codon usage initial configuration this system by keyboard 15, then lead to
It crosses fingerprint mould group 17 and carries out finger typing, when typing can be according to typing fingerprint of administrator and general fingerprint, typing Administrator account
Afterwards, after can be by fingerprint of administrator authorization, typing general fingerprint.
When user uses this system, by the fingerprint collecting face of touch fingerprint mould group 17, user fingerprints are obtained, and referring to
User characteristics are generated in line mould group 17, the fingerprint minutiae matching that such feature and fingerprint mould group 17 store can be logical by ordering
Letter notice microprocessor 16, then controls automatically controlled 13 opening gate of lock module by order control.
In use, system can be shown by LCD MODULE 17.Clock module 14 provides accurately for system
Clock signal.
Fingerprint entrance guard system described in the utility model based on cryptographic fingerprint mould group be mainly exactly secure registration fingerprint and
Safety search this two big function of fingerprint.Firstly, the fingerprint entrance guard system based on cryptographic fingerprint mould group needs before factory micro-
It is saved in advance key (symmetric cryptography) in processor 16 and fingerprint mould group 17, or generates unsymmetrical key in initialization.
As shown in figure 4, being the logical schematic of secure registration fingerprint.The first half process of secure registration and general fingerprint gate inhibition
Register flow path is almost the same, is all first to acquire fingerprint image several times, and extract feature respectively, then synthesize template.Secure registration
Maximum difference is hardware encryption and the communication mode of question-response of the process entirely communicated.General fingerprint gate inhibition is in life
At can directly store fingerprint after template and terminate entire register flow path, an illegal master control can be accessed in this process,
Then it operating legal fingerprint mould group and registers an illegal finger, that next fingerprint access control will identify this illegal finger,
System is caused to open by mistake lock；And secure registration is conjunction of the fingerprint mould group 17 to be allowed by safe encryption hardware 171 to microprocessor 16
Method is verified, and can just store fingerprint by rear, to prevent registering illegal finger.If ciphertext communication all passes through, that fingerprint
Mould group 17 just stores this piece of fingerprint；If there is one-time authentication does not pass through, that fingerprint mould group 17 is just the master control currently communicated
Equipment is considered as illegality equipment, refusal this piece of fingerprint of registration.The safety for the communication that this process just greatly guarantees, and infusing
The detection of 16 legitimacy of microprocessor during volume.
As shown in figure 5, being the logical schematic for searching for fingerprint safely.The process searched for safely and general fingerprint gate inhibition registration
It is almost the same, all it is first to acquire current fingerprint image, and extract feature, is carried out after being searched in fingerprint base according to search result
It unlocks or other is acted.The maximum difference of safety search is last search step.The fingerprint mould group of general fingerprint gate inhibition
Result can be transferred to master control with plaintext version after search, in this process if one illegal fingerprint mould group of access,
Can return one it is false be identification information, cause system to open by mistake lock；And searching for safely is that microprocessor dependence to be allowed adds
Close algorithm verifies the legitimacy of fingerprint mould group, to prevent obtaining illegal identification information.Microprocessor 16 and fingerprint mould group
17 communication can all be encrypted by hardware, carry out ciphertext transmission.Question-response then according to these information carry out unlock or its
He acts；If once question and answer do not pass through for coded communication, that fingerprint mould group is just considered as the microprocessor currently communicated
Illegality equipment, same microprocessor can also be considered as fingerprint mould group illegality equipment, and refusal extracts identification information and other data are logical
Letter.
In use, key and plaintext are or not fingerprint entrance guard system described in the utility model based on cryptographic fingerprint mould group
Can outside transmit, this it is ensured that such encrypted authentication mode safety.Key can be two groups of symmetrical code keys, can also be with
The public key and private key of one group of asymmetric code key, this it is ensured that such encrypted authentication flexibility.It is legal to verify current device
Property when, if the ciphertext before copy, match with the plaintext of current dynamic generation will not be by；In addition, verifying is all
It is to be completed in Management Information Base and response.This two o'clock can guarantee the timeliness of such encrypted authentication.The operation of encryption and decryption is all
To be carried out in hardware encryption chip, this it is ensured that system response speed.
It should be noted that above-described embodiment can be freely combined as needed.The above is only to the utility model
Preferred embodiment and principle be described in detail, for those of ordinary skill in the art, mention according to the utility model
The thought of confession, will change in specific embodiment, and these changes also should be regarded as the protection scope of the utility model.
Claims (7)
1. based on the fingerprint entrance guard system of cryptographic fingerprint mould group, including microprocessor, fingerprint mould group, automatically controlled lock module, keyboard, electricity
Source system, the fingerprint mould group, automatically controlled lock module, keyboard, power-supply system are connect with microprocessor, it is characterised in that: described
Fingerprint mould group includes:
Safe encryption hardware, for the equipment validity with microprocessor communication verifying microprocessor and fingerprint mould group；At fingerprint
Module is managed, for the acquisition of fingerprint characteristic, identifies, stores, management.
2. the fingerprint entrance guard system according to claim 1 based on cryptographic fingerprint mould group, it is characterised in that: the safety adds
Close hardware uses hardware encryption chip.
3. the fingerprint entrance guard system according to claim 1 based on cryptographic fingerprint mould group, it is characterised in that: the safety adds
It is ciphertext transmission between close hardware and microprocessor.
4. the fingerprint entrance guard system based on cryptographic fingerprint mould group described according to claim 1~one of 3, it is characterised in that: institute
It states and is also connected with clock module and LCD MODULE on microprocessor.
5. the fingerprint entrance guard system based on cryptographic fingerprint mould group described according to claim 1~one of 3, it is characterised in that: institute
Stating fingerprint entrance guard system further includes mechanical structure, and the mechanical structure includes shell, structural mount, mechanical fixed part, described
Microprocessor, fingerprint mould group, automatically controlled lock module, keyboard, power-supply system are solid by corresponding structural mount, mechanical fixed part
It is scheduled in shell.
6. the fingerprint entrance guard system based on cryptographic fingerprint mould group described according to claim 1~one of 3, it is characterised in that: institute
Stating automatically controlled lock module is the electromagnetic lock module controlled by relay.
7. the fingerprint entrance guard system based on cryptographic fingerprint mould group described according to claim 1~one of 3, it is characterised in that: institute
Stating power-supply system includes that AC turns DC power module and redundant electrical power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820807543.8U CN208240108U (en) | 2018-05-29 | 2018-05-29 | Fingerprint entrance guard system based on cryptographic fingerprint mould group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820807543.8U CN208240108U (en) | 2018-05-29 | 2018-05-29 | Fingerprint entrance guard system based on cryptographic fingerprint mould group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208240108U true CN208240108U (en) | 2018-12-14 |
Family
ID=64576031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820807543.8U Active CN208240108U (en) | 2018-05-29 | 2018-05-29 | Fingerprint entrance guard system based on cryptographic fingerprint mould group |
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| CN (1) | CN208240108U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109858268A (en) * | 2019-02-15 | 2019-06-07 | 深圳云程科技有限公司 | A kind of encrypting fingerprint NB module system |
| CN110390746A (en) * | 2019-06-16 | 2019-10-29 | 广州智慧城市发展研究院 | A kind of implementation method of fingerprint anti-theft gate inhibition |
-
2018
- 2018-05-29 CN CN201820807543.8U patent/CN208240108U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109858268A (en) * | 2019-02-15 | 2019-06-07 | 深圳云程科技有限公司 | A kind of encrypting fingerprint NB module system |
| CN110390746A (en) * | 2019-06-16 | 2019-10-29 | 广州智慧城市发展研究院 | A kind of implementation method of fingerprint anti-theft gate inhibition |
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