CN105184969B - A kind of system and method for the anti-pin detection of capacitance - Google Patents
A kind of system and method for the anti-pin detection of capacitance Download PDFInfo
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- CN105184969B CN105184969B CN201510588092.4A CN201510588092A CN105184969B CN 105184969 B CN105184969 B CN 105184969B CN 201510588092 A CN201510588092 A CN 201510588092A CN 105184969 B CN105184969 B CN 105184969B
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Abstract
Technical scheme of the present invention includes a kind of system of the anti-pin detection of capacitance, which includes：Using capacitive sensing device gathered data, data-analyzing machine analyzes the data of acquisition, and data storage stores history detection data and detection threshold value, and parsing transmitter is for parsing reception information and sending warning message to cipher input equipment.The invention also includes a kind of methods of the anti-pin detection of capacitance, including：Change acquisition and analysis detecting data according to capacitance values, store detection data, additionally it is possible to send warning message to cipher input equipment.Beneficial effects of the present invention are：The whether capped pin detection device of cipher input equipment can be confirmed, if there is pin detection device before user inputs password, stop Password Input service immediately, the paused service of user is prompted, avoids user password from illegally being stolen, greatly ensure that the safety of user password.
Description
Technical field
The present invention relates to a kind of anti-pin detection system and methods of capacitance, belong to equipment safety field of detecting.
Background technology
The cipher input equipment of existing electronic product can generally take many cipher safe protecting measures, ensure that password is defeated
It is not recorded illegally during entering, ensures that password is not illegally stolen.With the development of science and technology, the progress of technology, new technology
Occur, the safety of password is greatly challenged.For example, the implantable pressure detection circuit below password silica gel push-button；In password
Adhere to the pin detection keyboard of emulation on keyboard；Adhere to a series of new detection means such as layer of transparent film on code keyboard.
There are one common features for this kind of new detection means, they do not have generation circuit contact, and we term it inverter circuit contacts to detect.
This kind of inverter circuit is contacted and is detected, is not easy to be easily noticed by the users, can not be detected using traditional cipher safe protecting measure,
Harmfulness is high.
This kind of inverter circuit is contacted and is detected, is not easy to be easily noticed by the users, it can not using traditional cipher safe protecting measure
It detected, harmfulness is high.Therefore completely it is necessary to take a kind of technology to contact the presence detected to detect this kind of inverter circuit,
To realize the strong protection to password.
Invention content
It is more weak to the detection of non-metal kind for the prior art, it can not detect non-electrical using previous safeguard measure
The problem of road contacts, the present invention provides a kind of system and methods of the anti-pin detection of capacitance, are known from experience using covering and change week
The electric field enclosed makes the capacity of capacitance change and is continued above certain time, it is thus regarded that there are inverter circuit contacts to detect.
Technical scheme of the present invention includes a kind of system of the anti-pin detection of capacitance, which includes：Capacitive sensing device is used
In detecting protected cipher input equipment environmental capacitance variation, the count value of capacitance variations, the C meter are concurrently sent in acquisition
The environment temperature of numerical value and current time forms detection data；Data-analyzing machine, for receiving the capacitive sensing device transmission
Detection data analyzes the variation of capacitance count value according to the difference of temperature and state, while covering pattern being used to analyze successively,
It touches pattern analysis, non-touch pattern analysis, if there are inverter circuit contacts to detect, and obtains analysis result；Data storage is used
Capacitance count value is detected in storage history, and is preset with detection threshold value；Transmitter is parsed, for receiving transmitted by data-analyzing machine
Analysis result, data in analytic results, and corresponding solicited message is sent to cipher input equipment.
Further, the capacitive sensing device includes the capacitance data acquisition module being arranged inside cipher input equipment,
When detecting the extraneous behavior for possessing input password, induction cipher input equipment environmental capacitance variation, and acquire multiple capacitance
Count value, at the same can also acquisition testing data, and detection data is sent to the data-analyzing machine.
Further, the data-analyzing machine includes capacitance data receiving module, is sent for receiving the capacitance data
The detection data of device parses and pre-reads detection data；Counting module, including counter, for according to detection data with it is described
The preset detection threshold value of data storage is compared, and the capacitor square count value of analysis result is more than the threshold of default result detection
Value, then it represents that event is contacted for inverter circuit, inverter circuit is generated and contacts event flag, and counter is made to add one, the electricity of analysis result
When holding threshold value of the count value less than default result detection, then it represents that be not that inverter circuit contacts event, then not will produce inverter circuit and connect
The event of touching, counter values are constant；Covering pattern analysis module is pre-read detection data for calling, is carried out using covering pattern
Whether scanning, analysis detecting data are inverter circuit contact event, if it is exit covering pattern scanning, generate inverter circuit contact
Covering event, while counter being made to add one, then executing the above process again, straight Counter Value accumulated value meets inverter circuit for several times
The predetermined threshold value of covering pattern is contacted, if not being that inverter circuit contacts event, so that counter values is reset, and use touches mould
Formula carries out next step scanning；Pattern analysis module is touched, detection data is pre-read after covering pattern is analyzed for calling, makes
It is scanned with the pattern of touching, whether analysis detecting data is the event of touching, and touches mark if it is, generating and executes next
Walk it is non-touch pattern analysis, be otherwise directly entered and non-touch pattern analysis in next step；It is non-to touch pattern analysis module, for calling
Pre-read detection data after covering pattern is analyzed, analyzed using the non-pattern of touching, determine whether it is non-touch event,
If it is the non-covering pattern analysis for touching mark and return is initially described is generated, is covered if not most initial is then directly entered
Lid pattern analysis；Analysis result sending module, the analysis result for receiving the module, and send it to the data hair
Send device.
Further, the data memory module includes：Data memory module, for storing the capacitive sensing device acquisition
History detection data, be additionally provided with for judge detection information whether be external rogue attacks threshold value, when data point
When parser analysis detecting data, the preset detection threshold value is called.
Further, the parsing transmitter includes：Data resolution module, the analysis for receiving the data-analyzing machine
As a result, parsing the analysis result；Information sending module, according to the analysis result of the data resolution module, to what is protected
Cipher input equipment sends corresponding information, if analysis result is to detect extraneous illegal detection, to cipher input equipment
Send request and the extraneous request for disconnecting information input.
Technical scheme of the present invention further includes a kind of method of the anti-pin detection of capacitance, and this method includes：Detection is protected
The variation of cipher input equipment environmental capacitance, acquisition concurrently send the count values of capacitance variations, the capacitance count value and it is current when
Between environment temperature form detection data；The detection data that the capacitive sensing device is sent is received, not according to temperature and state
Together, analyze capacitance count value variation, while successively using covering pattern analysis, touch pattern analysis, it is non-touch pattern analysis,
It contacts and detects with the presence or absence of inverter circuit, obtain analysis result；It stores history and detects capacitance count value, and be preset with detection threshold value；
The analysis result transmitted by data-analyzing machine, the data in analytic results are received, and sends and corresponds to cipher input equipment
Solicited message.
Further, a kind of method of the anti-pin detection of capacitance, this method further include：It is arranged inside cipher input equipment
Capacitance data acquisition module, when detecting the extraneous behavior for possessing input password, induction cipher input equipment environmental capacitance becomes
Change, and acquire multiple capacitance count value, at the same can also acquisition testing data, and detection data is sent to the data analysis
Device.
Further, a kind of method of the anti-pin detection of capacitance, this method further include：Receive the capacitance data sending device
Detection data, parse and pre-read detection data；It is carried out according to detection data and the preset detection threshold value of the data storage
Comparison, the capacitor square count value of analysis result are more than the threshold value of default result detection, then it represents that contact event for inverter circuit, generate
Inverter circuit contacts event flag, and counter is made to add one, and the capacitance count value of analysis result is less than the threshold value of default result detection
When, then it represents that event is not contacted for inverter circuit, then not will produce inverter circuit contact event, counter values are constant；Calling is pre-read
Detection data is scanned using covering pattern, and whether analysis detecting data is inverter circuit contact event, if it is exits and covers
Lid Mode scans, generate the covering event of inverter circuit contact, while counter being made to add one, and it is straight for several times then to execute the above process again
Counter Value accumulated value meets the predetermined threshold value of inverter circuit contact covering pattern, if not being that inverter circuit contacts event, makes meter
Number device numerical value is reset, and use touches pattern and carries out next step scanning；Calling pre-reads testing number after covering pattern is analyzed
According to, be scanned using the pattern of touching, whether analysis detecting data is the event of touching, if it is, generate touch indicate and hold
Row is non-in next step to touch pattern analysis, is otherwise directly entered and non-touches pattern analysis in next step；It calls and is analyzed by covering pattern
Afterwards pre-read detection data, analyzed using the non-pattern of touching, determine whether it is non-touch event, if it is generate non-touch
And indicate and return the initially described covering pattern analysis, it is analyzed if not most initial covering pattern is then directly entered；It receives
The analysis result of the module, and send it to the data transmitter.
Further, a kind of method of the anti-pin detection of capacitance, this method further include：Store the capacitive sensing device acquisition
History detection data, be additionally provided with for judge detection information whether be external rogue attacks threshold value, when the data analysis
When device analysis detecting data, the preset detection threshold value is called.
Further, a kind of method of the anti-pin detection of capacitance, this method further include：Receive the analysis of the data-analyzing machine
As a result, parsing the analysis result；According to the analysis result of the data resolution module, to the cipher input equipment hair protected
Corresponding information is sent, if analysis result is to detect extraneous illegally detection, request and the external world are sent to cipher input equipment
Disconnect the request of information input；
Beneficial effects of the present invention are：It can confirm the whether capped password of cipher input equipment before user inputs password
Detection device stops Password Input service immediately if there is pin detection device, prompts the paused service of user, avoids using
Family password is illegally stolen, and greatly ensure that the safety of user password.
Description of the drawings
Fig. 1 is shown according to embodiment of the present invention the general frame；
Fig. 2 show the system construction drawing according to embodiment of the present invention；
Fig. 3 show the data analysis flowcharts according to embodiment of the present invention；
Fig. 4 show the capacitance variations figure according to embodiment of the present invention.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, right in the following with reference to the drawings and specific embodiments
The present invention is described in detail.A kind of system and method for the anti-pin detection of capacitance of the present invention is related to the finance of cryptosecurity,
Such as POS machine, ATM, mobile-phone payment etc., it is additionally operable to the fields such as security protection (gate inhibition, electronic lock, safety cabinet), military project, national defence.
Fig. 1 is shown according to embodiment of the present invention the general frame, specifically includes capacitive sensing device, data-analyzing machine, number
According to memory, parsing transmitter and the safety device protected, wherein capacitive sensing device, including a highly sensitive induced electricity
Hold, the count value of capacitance variations, the C meter are concurrently sent in the protected cipher input equipment environmental capacitance variation of detection, acquisition
The environment temperature of numerical value and current time is collectively referred to as detection data；Data-analyzing machine is sent for receiving the capacitive sensing device
Capacitance count value the variation of capacitance count value is analyzed, while successively using covering pattern point according to the difference of temperature and state
Analyse, touch pattern analysis, it is non-touch pattern analysis whether belong to inverter circuit contact detection event, and judge inverter circuit contact event
Type, obtain analysis result；Data storage detects capacitance count value for storing history, and is preset with detection threshold value；Solution
Transmitter is analysed, for receiving the analysis result transmitted by data-analyzing machine, data in analytic results, and set to Password Input
Preparation send corresponding solicited message.When the safety device receive the illegal extraneous detection information of parsing transmitter when
It waits, enables self-insurance pattern, close the input of external information, and remind using LED display.
Fig. 2 show the system construction drawing according to embodiment of the present invention, wherein the system of the present invention is close for what is protected
Inside code input equipment, and it is connected with the security centre of cipher input equipment, the system of the anti-pin detection of capacitance of the invention
Including a capacitive sensing device, the capacitive sensing device includes acquisition capacitance variations value and current temperature, then will be detected
Data are sent to data-analyzing machine；The data-analyzing machine using a whole set of flow to the detection data examinations that are received,
Detection include covering pattern detection, touch mode detection, it is non-touch mode detection, when testing result for touch event when, can
It is confirmed as illegal outside world, then sends detection covering event alert to parsing transmitter；The parsing transmitter, receives
When detection covering event alert, corresponding warning message is sent to cipher input equipment；The cipher input equipment receives warning
When information, protected mode is taken, cut-out is connect with extraneous information, and prompting can not input information in LED display
Warning.
Fig. 3 show the data analysis flowcharts according to embodiment of the present invention, and specific implementation step is：
(1) temperature value and button-counting function value are read, gathered data is used for；
(2) enter covering pattern to scan, detect whether there is illegal covering；
(3) judge whether to be capped, be to enter (13), otherwise enter in next step；
(4) counter is removed；
(5) enter and touch Mode scans；
(6) judge whether to touch, be then to enter in next step, otherwise enter (9)；
(7) it judges whether to touch mark, is then to enter (9), otherwise enters in next step；
(8) set touches mark, and generation touches event；
(9) enter non-touch Mode scans；
(10) judge whether it is non-touch, be then enter in next step, otherwise enter (1)；
(11) it judges whether to touch mark, is to enter in next step, otherwise enters (1)；
(12) it removes and touches mark, non-touch event is generated, into (1)；
(13) counter adds one；
(14) judge whether counter is more than thresholding X, be to enter in next step, and otherwise enter (1)；
(15) scanning is exited, covering event is generated；
(16) subsequently with the interaction of cipher input equipment, cipher input equipment reception warning message is simultaneously into protected mode.
Fig. 4 show the capacitance variations figure according to embodiment of the present invention, because capacitance is influenced by temperature, in order to ensure
The accuracy of gathered data acquires current environmental temperature together when acquiring capacitance data.It, will be highly sensitive using this principle
Inductance capacitance is put into inside cipher input equipment, and when object is closer from capacitance, capacitive sensing count value is bigger；When object is from capacitance
Remoter, capacitive sensing count value is smaller；For different objects from capacitance same distance, capacitive sensing count value is also different.Such as Fig. 4 institutes
Show, as temperature and state difference capacitive sensing count value are also different, for example, at 20 degree, the counting of capacitance when non-touch
Value=200, count value=2200 of capacitance when touching；Cover and it is non-touch when capacitance count value>200, capacitance when covering touches
Count value>2200；At 80 degree, count value=500 of capacitance when non-touch, count value=2500 of capacitance when touching；Covering is simultaneously
And when non-touch capacitance count value>500, the count value of capacitance when covering touches>2500.It is divided into Three models as a result, touches mould
Formula, non-touch pattern, covering pattern.When covering pattern count value is more than X, it is considered as covering and exists and generate covering event.
The above, only presently preferred embodiments of the present invention, the invention is not limited in the above embodiments, as long as
It reaches the technique effect of the present invention with identical means, should all belong to the scope of protection of the present invention.In the protection model of the present invention
Its technical solution and/or embodiment can have a variety of different modifications and variations in enclosing.
Claims (8)
1. a kind of system of the anti-pin detection of capacitance, which is characterized in that the system includes：
Capacitive sensing device, for detecting protected cipher input equipment environmental capacitance variation, capacitance variations are concurrently sent in acquisition
Count value, the count value of capacitance variations and the environment temperature of current time form detection data；
Data storage detects the count value of capacitance variations for storing history, and is preset with detection threshold value；
Data-analyzing machine, the detection data for receiving the transmission of capacitive sensing device analyze capacitance according to the difference of temperature and state
The variation of the count value of variation, at the same successively using covering pattern analysis, touch pattern analysis, non-touch pattern analysis, if
There are inverter circuit contacts to detect, and obtains analysis result comprising capacitance data receiving module sends dress for receiving capacitance data
The detection data set parses and pre-reads detection data；Counting module, including counter, for according to detection data and the number
It being compared according to the preset detection threshold value of memory, the count value of the capacitance variations of analysis result is more than preset detection threshold value,
It is then expressed as inverter circuit contact event, inverter circuit is generated and contacts event flag, and counter is made to add one, the capacitance of analysis result becomes
The count value of change is less than preset detection threshold value, then it represents that does not contact event for inverter circuit, then not will produce inverter circuit contact thing
Part, counter values are constant；Covering pattern analysis module is pre-read detection data for calling, is scanned using covering pattern,
Whether analysis detecting data is inverter circuit contact event, if it is exits covering pattern scanning, generates covering for inverter circuit contact
Lid event, while counter being made to add one, the above process is then executed again for several times until Counter Value accumulated value meets inverter circuit and connects
The predetermined threshold value of covering pattern is touched, if not being that inverter circuit contacts event, so that counter values is reset, and use touches pattern
Carry out next step scanning；Pattern analysis module is touched, for calling the detection data that pre-reads after covering pattern is analyzed, is used
The pattern of touching is scanned, and whether analysis detecting data is the event of touching, and is touched mark if it is, generating and is executed next step
It is non-to touch pattern analysis, it is otherwise directly entered and non-touches pattern analysis in next step；It is non-to touch pattern analysis module, for calling warp
Cross covering pattern analysis after pre-read detection data, analyzed using the non-pattern of touching, determine whether it is non-touch event, such as
Fruit is to generate the non-covering pattern analysis for touching mark and return is initially described, is covered if not most initial is then directly entered
Pattern analysis；Analysis result sending module, the analysis result for receiving analysis module, and send it to data transmitter；
Transmitter is parsed, for receiving the analysis result transmitted by data-analyzing machine, the data in analytic results, and to close
Code input equipment sends corresponding solicited message.
2. the system of the anti-pin detection of capacitance according to claim 1, which is characterized in that the capacitive sensing device includes：
The capacitance data acquisition module being arranged inside cipher input equipment, when detecting the extraneous behavior for possessing input password
When, induction cipher input equipment environmental capacitance variation, and the count value of multiple capacitance variations is acquired, and acquisition current environment temperature
Degree, and detection data is sent to the data-analyzing machine.
3. the system of the anti-pin detection of capacitance according to claim 1, which is characterized in that the data storage includes：
Data memory module, the history detection data for storing the capacitive sensing device acquisition, is additionally provided with for judging inspection
Whether measurement information is that the threshold values of external rogue attacks calls the preset inspection when the data-analyzing machine analysis detecting data
Survey threshold value.
4. the system of the anti-pin detection of capacitance according to claim 1, which is characterized in that the parsing transmitter includes：
Data resolution module, the analysis result for receiving the data-analyzing machine parse the analysis result；
Information sending module, according to the analysis result of the data resolution module, to the cipher input equipment transmission pair protected
The information answered sends request to cipher input equipment and is disconnected with extraneous if analysis result is to detect extraneous illegal detection
The request of information input.
5. a kind of method of the anti-pin detection of capacitance, which is characterized in that this method includes：
The count value of capacitance variations, capacitance variations are concurrently sent in the protected cipher input equipment environmental capacitance variation of detection, acquisition
Count value and current time environment temperature form detection data；
The count value of history detection capacitance variations is stored, and is preset with detection threshold value；
It receives the detection data that capacitive sensing device is sent and the count value of capacitance variations is analyzed according to the difference of temperature and state
Variation, at the same successively using covering pattern analysis, touch pattern analysis, non-touch pattern analysis, if there are inverter circuit contacts
Detection, obtains analysis result, further comprises the detection data for receiving capacitance data sending device, parses and pre-read testing number
According to；It is compared according to detection data and the preset detection threshold value of the data storage, the meter of the capacitance variations of analysis result
Numerical value is more than preset detection threshold value, then it represents that contacts event for inverter circuit, generates inverter circuit and contact event flag, and make counting
Device adds one, and the count value of the capacitance variations of analysis result is less than preset detection threshold value, then it represents that event is not contacted for inverter circuit,
Inverter circuit contact event is not will produce then, counter values are constant；Calling pre-reads detection data, is swept using covering pattern
It retouches, whether analysis detecting data is inverter circuit contact event, if it is exits covering pattern scanning, generates inverter circuit contact
Covering event, while counter being made to add one, the above process is then executed again for several times until Counter Value accumulated value meets inverter circuit
The predetermined threshold value of covering pattern is contacted, if not being that inverter circuit contacts event, so that counter values is reset, and use touches mould
Formula carries out next step scanning；Calling pre-reads detection data after covering pattern is analyzed, and is scanned using the pattern of touching, point
Analyse detection data whether be the event of touching, if it is, generate touch mark and execute in next step it is non-touch pattern analysis, otherwise
It is directly entered and non-touches pattern analysis in next step；Calling pre-reads detection data after covering pattern is analyzed, and is touched using non-
Pattern is analyzed, determine whether it is non-touch event, if it is generate and non-touch mark and return to the initially described covering
Pattern analysis is analyzed if not most initial covering pattern is then directly entered；The analysis result of analysis module is received, and is sent out
It send to data transmitter；
The analysis result transmitted by data-analyzing machine, the data in analytic results are received, and are sent to cipher input equipment
Corresponding solicited message.
6. the method for the anti-pin detection of capacitance according to claim 5, which is characterized in that this method further includes：
The capacitance data acquisition module being arranged inside cipher input equipment, when detecting the extraneous behavior for possessing input password
When, induction cipher input equipment environmental capacitance variation, acquisition testing data, and detection data is sent to the data analysis
Device.
7. the method for the anti-pin detection of capacitance according to claim 5, which is characterized in that this method further includes：
The history detection data for storing the capacitive sensing device acquisition is additionally provided with for judging whether detection information is external non-
The threshold value of method attack calls the preset detection threshold value when the data-analyzing machine analysis detecting data.
8. the method for the anti-pin detection of capacitance according to claim 5, which is characterized in that this method further includes：
The analysis result for receiving the data-analyzing machine parses the analysis result；
According to the analysis result of data resolution module, corresponding information is sent to the cipher input equipment protected, if analysis
As a result it is to detect extraneous illegal detection, then sends request and the extraneous request for disconnecting information input to cipher input equipment.
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| CN201510588092.4A CN105184969B (en) | 2015-09-16 | 2015-09-16 | A kind of system and method for the anti-pin detection of capacitance |
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| CN202120346U (en) * | 2011-06-20 | 2012-01-18 | 陈震 | Capacitor induction type password keyboard safety cover for self-service bank |
| EP2431899A1 (en) * | 2010-09-15 | 2012-03-21 | Compagnie Industrielle et Financière d'Ingénierie "Ingenico" | Protection device, corresponding method and computer program product. |
| CN103778715A (en) * | 2012-10-25 | 2014-05-07 | 北京国通创安报警网络技术有限公司 | Password stealing prevention alarm device for ATM |
| CN203825723U (en) * | 2014-05-21 | 2014-09-10 | 覃正军 | Password keyboard protecting cover |
| CN104318187A (en) * | 2014-10-17 | 2015-01-28 | 深圳市新国都技术股份有限公司 | Capacitance-detection-based protection method and system for interaction information of intelligent terminal |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2431899A1 (en) * | 2010-09-15 | 2012-03-21 | Compagnie Industrielle et Financière d'Ingénierie "Ingenico" | Protection device, corresponding method and computer program product. |
| CN202120346U (en) * | 2011-06-20 | 2012-01-18 | 陈震 | Capacitor induction type password keyboard safety cover for self-service bank |
| CN103778715A (en) * | 2012-10-25 | 2014-05-07 | 北京国通创安报警网络技术有限公司 | Password stealing prevention alarm device for ATM |
| CN203825723U (en) * | 2014-05-21 | 2014-09-10 | 覃正军 | Password keyboard protecting cover |
| CN104318187A (en) * | 2014-10-17 | 2015-01-28 | 深圳市新国都技术股份有限公司 | Capacitance-detection-based protection method and system for interaction information of intelligent terminal |
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