CN105184969A - System and method for preventing password detection through capacitance - Google Patents
System and method for preventing password detection through capacitance Download PDFInfo
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- CN105184969A CN105184969A CN201510588092.4A CN201510588092A CN105184969A CN 105184969 A CN105184969 A CN 105184969A CN 201510588092 A CN201510588092 A CN 201510588092A CN 105184969 A CN105184969 A CN 105184969A
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Abstract
The invention relates to a system for preventing password detection through capacitance. According to the technical scheme, the system comprises a capacitance sensor used for collecting data, a data analyzer used for analyzing the collected data, a data storage device used for storing historical detecting data and detecting threshold values, and an analyzing transmitter used for analyzing received information and transmitting alarming information to a password input device. The invention further relates to a method for preventing password detection through the capacitance. The method comprises the steps that the detecting data are collected and analyzed according to the changes of the numerical value of the capacitance, the detecting data are stored, and the alarming information can be transmitted to the password input device. The system and method for preventing password detection through the capacitance have the advantages that whether the password input device is covered with a password detecting device or not can be determined before a user inputs a password, if the password detecting device exists, the password input service is stopped immediately, the user is prompted of the pause service, it is avoided that the password of the user is illegally stolen, and the safety of the password of the user is greatly ensured.
Description
Technical field
The present invention relates to the anti-pin detection system and method for a kind of electric capacity, belong to device security field of detecting.
Background technology
The cipher input equipment of existing electronic product, generally can take a lot of cipher safe protecting measure, ensures not by illegal record in Password Input process, ensures that password is not illegally stolen.Along with the development of science and technology, the progress of technology, the appearance of new technology, the safety of password is subject to great challenge.Such as, implantable pressure testing circuit below password silica gel push-button; Code keypad adheres to the pin detection keyboard of emulation; Code keypad adheres to a series of new detection means such as layer of transparent film.This kind of new detection means has a common feature, and they do not produce electrical contact, and we are referred to as NOT-circuit contact detection.For this kind of NOT-circuit contact detection, be not easily easily noticed by the users, use traditional cipher safe protecting measure to detect, harmfulness is high.
For this kind of NOT-circuit contact detection, be not easily easily noticed by the users, use traditional cipher safe protecting measure to detect, harmfulness is high.Therefore be necessary completely to take a kind of technology to detect the existence of this kind of NOT-circuit contact detection, realize the strong protection to password.
Summary of the invention
More weak for the detection of prior art to non-metal kind; use safeguard measure in the past cannot detect the problem that NOT-circuit contacts; the invention provides the system and method for the anti-pin detection of a kind of electric capacity; utilizing coverture to know from experience the electric field around changing makes the capacity of electric capacity change and be continued above certain hour, thinks to there is NOT-circuit contact detection thus.
Technical scheme of the present invention comprises the system of the anti-pin detection of a kind of electric capacity, this system comprises: capacitive sensing device, for detecting protected cipher input equipment environmental capacitance change, gather the concurrent count value sending capacitance variations, the environment temperature composition of described C meter numerical value and current time detects data; Data-analyzing machine, for receiving the detection data that described capacitive sensing device sends, according to the difference of temperature and state, analyze the change of C meter numerical value, use replace mode analysis successively simultaneously, touch pattern analysis, non-ly touch pattern analysis, whether there is NOT-circuit contact detection, draw analysis result; Data-carrier store, for storing history Detection capacitance count value, and is preset with detection threshold; Resolving transmitter, for receiving the analysis result that data-analyzing machine sends, the data in analytic results, and sending corresponding solicited message to cipher input equipment.
Further, described capacitive sensing device comprises the capacitance data acquisition module being arranged on cipher input equipment inside, when detecting that the external world has the behavior of input password, the change of induction cipher input equipment environmental capacitance, and gather repeatedly C meter numerical value, simultaneously also can acquisition testing data, and detection data are sent to described data-analyzing machine.
Further, described data-analyzing machine comprises capacitance data receiver module, for receiving the detection data of described capacitance data dispensing device, resolving and pre-reading detection data; Counting module, comprise counter, detection threshold for presetting according to detection data and described data-carrier store contrasts, and the capacitor square count value of analysis result is greater than the threshold value of default result detection, be then expressed as NOT-circuit contact event, produce NOT-circuit contact event flag, and make counter add one, when the C meter numerical value of analysis result is less than the threshold value of default result detection, then represent not to be NOT-circuit contact event, then can not produce NOT-circuit contact event, counter values is constant; Replace mode analysis module, detection data are pre-read for calling, replace mode is used to scan, whether analysis detecting data is NOT-circuit contact event, if it is replace mode scanning is exited, produce the covering event of NOT-circuit contact, make counter add one simultaneously, and then perform the predetermined threshold value that the straight Counter Value accumulated value of said process several meets NOT-circuit contact replace mode, if be not NOT-circuit contact event, then make counter values reset, and use the pattern of touching to carry out next step scanning; Touch pattern analysis module, after replace mode analysis, detection data are pre-read for calling, the use pattern of touching scans, whether analysis detecting data is the event of touching, if, then produce to touch and indicate and perform next step and non-ly touch pattern analysis, otherwise directly enter next step and non-ly touch pattern analysis; Non-ly touch pattern analysis module, after replace mode analysis, detection data are pre-read for calling, the non-pattern of touching is used to analyze, determine whether non-ly to touch event, if it is produce non-touching indicate and return initial described replace mode analysis, if not then directly entering the most initial replace mode analysis; Analysis result sending module, for receiving the analysis result of described module, and sends it to described data transmitter.
Further, described data memory module comprises: data memory module, the history gathered for storing described capacitive sensing device detects data, also be provided with for judging that whether Detection Information is the threshold value of outside rogue attacks, when described data-analyzing machine analysis detecting data, call the detection threshold that this is preset.
Further, described parsing transmitter comprises: data resolution module, for receiving the analysis result of described data-analyzing machine, resolves described analysis result; Information sending module; according to the analysis result of described data resolution module; sending corresponding information to protected cipher input equipment, if analysis result is for extraneous illegal detection being detected, then sending request the request disconnecting information with the external world and input to cipher input equipment.
Technical scheme of the present invention also comprises the method for the anti-pin detection of a kind of electric capacity, the method comprises: detect the cipher input equipment environmental capacitance change protected, gather the concurrent count value sending capacitance variations, the environment temperature composition of described C meter numerical value and current time detects data; Receive the detection data that described capacitive sensing device sends, according to the difference of temperature and state, analyze the change of C meter numerical value, use replace mode analysis simultaneously successively, touch pattern analysis, non-ly touch pattern analysis, whether there is NOT-circuit contact detection, draw analysis result; Store history Detection capacitance count value, and be preset with detection threshold; Receive the analysis result that data-analyzing machine sends, the data in analytic results, and send corresponding solicited message to cipher input equipment.
Further, the method of the anti-pin detection of a kind of electric capacity, the method also comprises: the capacitance data acquisition module being arranged on cipher input equipment inside, when detecting that the external world has the behavior of input password, the change of induction cipher input equipment environmental capacitance, and gather repeatedly C meter numerical value, simultaneously also can acquisition testing data, and detection data are sent to described data-analyzing machine.
Further, the method for the anti-pin detection of a kind of electric capacity, the method also comprises: the detection data receiving described capacitance data dispensing device, resolves and pre-reads detection data; Contrast according to the detection threshold that detection data and described data-carrier store are preset, the capacitor square count value of analysis result is greater than the threshold value of default result detection, then be expressed as NOT-circuit contact event, produce NOT-circuit contact event flag, and make counter add one, when the C meter numerical value of analysis result is less than the threshold value of default result detection, then represent not to be NOT-circuit contact event, then can not produce NOT-circuit contact event, counter values is constant; Call and pre-read detection data, replace mode is used to scan, whether analysis detecting data is NOT-circuit contact event, if it is exit replace mode scanning, produce the covering event of NOT-circuit contact, make counter add one simultaneously, and then perform the predetermined threshold value that the straight Counter Value accumulated value of said process several meets NOT-circuit contact replace mode, if be not NOT-circuit contact event, then make counter values reset, and use the pattern of touching to carry out next step scanning; Call and pre-read detection data after replace mode analysis, the use pattern of touching scans, and whether analysis detecting data is the event of touching, if, then produce to touch and indicate and perform next step and non-ly touch pattern analysis, otherwise directly enter next step and non-ly touch pattern analysis; Call and pre-read detection data after replace mode analysis, the non-pattern of touching is used to analyze, determine whether non-ly to touch event, if it is produce non-touching and indicate and return initial described replace mode analysis, if not then directly entering the most initial replace mode analysis; Receive the analysis result of described module, and send it to described data transmitter.
Further, the method of the anti-pin detection of a kind of electric capacity, the method also comprises: store the history detection data that described capacitive sensing device gathers, also be provided with for judging that whether Detection Information is the threshold value of outside rogue attacks, when described data-analyzing machine analysis detecting data, call the detection threshold that this is preset.
Further, the method for the anti-pin detection of a kind of electric capacity, the method also comprises: the analysis result receiving described data-analyzing machine, resolves described analysis result; According to the analysis result of described data resolution module, sending corresponding information to protected cipher input equipment, if analysis result is for extraneous illegal detection being detected, then sending request the request disconnecting information with the external world and input to cipher input equipment;
Beneficial effect of the present invention is: can before user inputs password, confirm the whether capped pin detection device of cipher input equipment, if there is pin detection device, stop Password Input service immediately, the paused service of prompting user, avoid user cipher illegally to be stolen, ensure that the security of user cipher greatly.
Accompanying drawing explanation
Figure 1 shows that according to embodiment of the present invention the general frame;
Figure 2 shows that the system construction drawing according to embodiment of the present invention;
Figure 3 shows that the data analysis flowcharts according to embodiment of the present invention;
Figure 4 shows that the capacitance variations figure according to embodiment of the present invention.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearly, describe the present invention below in conjunction with the drawings and specific embodiments.The system and method for the anti-pin detection of a kind of electric capacity of the present invention relates to the finance of cryptosecurity, such as POS, ATM, mobile-phone payment etc., also for the field such as security protection (gate inhibition, electronic lock, safety cabinet), military project, national defence.
Figure 1 shows that according to embodiment of the present invention the general frame, the safety feature specifically comprising capacitive sensing device, data-analyzing machine, data-carrier store, parsing transmitter and protect, wherein capacitive sensing device, comprise a high sensitivity inductance capacitance, detect the cipher input equipment environmental capacitance change protected, gather the concurrent count value sending capacitance variations, the environment temperature of described C meter numerical value and current time is generically and collectively referred to as detection data; Data-analyzing machine, for receiving the C meter numerical value that described capacitive sensing device sends, according to the difference of temperature and state, analyze the change of C meter numerical value, use replace mode analysis successively simultaneously, touch pattern analysis, non-ly touch pattern analysis and whether belong to NOT-circuit contact detection event, and judge the kind of NOT-circuit contact event, draw analysis result; Data-carrier store, for storing history Detection capacitance count value, and is preset with detection threshold; Resolving transmitter, for receiving the analysis result that data-analyzing machine sends, data in analytic results, and sending corresponding solicited message to cipher input equipment.When described safety feature receives the illegal extraneous detection information of resolving transmitter time, enable self-insurance pattern, close the input of external information, and use LED display to remind.
Figure 2 shows that the system construction drawing according to embodiment of the present invention, wherein system of the present invention is protected cipher input equipment inside, and be connected with the security centre of cipher input equipment, the system of the anti-pin detection of electric capacity of the present invention comprises a capacitive sensing device, described capacitive sensing device comprises collection capacitance variations value and current temperature, then detection data is sent to data-analyzing machine; Described data-analyzing machine uses a whole set of flow process to accepted detection data examinations, detection comprises replace mode and detects, touches mode detection, non-ly touches mode detection, when testing result is for touching event, illegal outside world can be confirmed as, then send to parsing transmitter and detect covering event alert; Described parsing transmitter, when receiving detection covering event alert, sends corresponding warning message to cipher input equipment; When described cipher input equipment receives warning message, take protected mode, cut off and be connected with extraneous information, and in LED display, remind the warning that cannot input information.
Figure 3 shows that the data analysis flowcharts according to embodiment of the present invention, concrete implementation step is:
(1) temperature value and button-counting function value is read, for image data;
(2) enter replace mode scanning, detect whether there is illegal covering;
(3) judge whether to be capped, be enter (13), otherwise enter next step;
(4) counter is removed;
(5) enter and touch Mode scans;
(6) judge whether to touch, be, enter next step, otherwise enter (9);
(7) judge whether that existence touches mark, be, enter (9), otherwise enter next step;
(8) set touches mark, produces and touches event;
(9) non-touch Mode scans is entered;
(10) judge whether non-touch, be, enter next step, otherwise enter (1);
(11) judging whether that existence touches mark, is enter next step, otherwise enters (1);
(12) removing touches mark, produces non-touch event, enters (1);
(13) counter adds one;
(14) judging whether counter is greater than thresholding X, is enter next step, and otherwise enter (1);
(15) exit scanning, produce covering event;
(16) follow-up mutual with cipher input equipment, cipher input equipment receives warning message and also enters protected mode.
Figure 4 shows that the capacitance variations figure according to embodiment of the present invention, because electric capacity is by the impact of temperature, in order to ensure the accuracy of image data, gathering current environmental temperature in the lump when gathering capacitance data.Utilize this principle, high sensitivity inductance capacitance put into cipher input equipment inside, when object from electric capacity more close to, capacitive sensing count value is larger; When object from electric capacity more away from, capacitive sensing count value is less; Different objects is from electric capacity same distance, and capacitive sensing count value is also different.As shown in Figure 4, along with temperature capacitive sensing count value different from state is also different, such as, 20 degree time, count value=200 of electric capacity during non-touch, count value=2200 of electric capacity when touching; Cover and non-touch time electric capacity count value >200, cover the count value >2200 of electric capacity when touching; 80 degree time, count value=500 of electric capacity during non-touch, count value=2500 of electric capacity when touching; Cover and non-touch time electric capacity count value >500, cover the count value >2500 of electric capacity when touching.Thus, be divided into Three models, touch pattern, non-touch pattern, replace mode.When replace mode count value is more than X, be considered as covering and exist and produce covering event.
The above, just preferred embodiment of the present invention, the present invention is not limited to above-mentioned embodiment, as long as it reaches technique effect of the present invention with identical means, all should belong to protection scope of the present invention.In protection scope of the present invention, its technical scheme and/or embodiment can have various different modifications and variations.
Claims (10)
1. a system for the anti-pin detection of electric capacity, is characterized in that, this system comprises:
Capacitive sensing device, for detecting protected cipher input equipment environmental capacitance change, gathers the concurrent count value sending capacitance variations, and the environment temperature composition of C meter numerical value and current time detects data;
Data-analyzing machine, for receiving the detection data that capacitive sensing device sends, according to the difference of temperature and state, analyze the change of C meter numerical value, use replace mode analysis successively simultaneously, touch pattern analysis, non-ly touch pattern analysis, whether there is NOT-circuit contact detection, draw analysis result;
Data-carrier store, for storing history Detection capacitance count value, and is preset with detection threshold;
Resolving transmitter, for receiving the analysis result that data-analyzing machine sends, the data in analytic results, and sending corresponding solicited message to cipher input equipment.
2. the system of the anti-pin detection of electric capacity according to right 1, it is characterized in that, described capacitive sensing device comprises:
Be arranged on the capacitance data acquisition module of cipher input equipment inside, when detecting that the external world has the behavior of input password, the change of induction cipher input equipment environmental capacitance, and gather repeatedly C meter numerical value, simultaneously also can acquisition testing data, and detection data are sent to described data-analyzing machine.
3. the system of the anti-pin detection of electric capacity according to claim 1, it is characterized in that, described data-analyzing machine comprises:
Capacitance data receiver module, for receiving the detection data of capacitance data dispensing device, resolving and pre-reading detection data;
Counting module, comprise counter, detection threshold for presetting according to detection data and described data-carrier store contrasts, and the capacitor square count value of analysis result is greater than the threshold value of default result detection, be then expressed as NOT-circuit contact event, produce NOT-circuit contact event flag, and make counter add one, when the C meter numerical value of analysis result is less than the threshold value of default result detection, then represent not to be NOT-circuit contact event, then can not produce NOT-circuit contact event, counter values is constant;
Replace mode analysis module, detection data are pre-read for calling, replace mode is used to scan, whether analysis detecting data is NOT-circuit contact event, if it is replace mode scanning is exited, produce the covering event of NOT-circuit contact, make counter add one simultaneously, and then perform the predetermined threshold value that the straight Counter Value accumulated value of said process several meets NOT-circuit contact replace mode, if be not NOT-circuit contact event, then make counter values reset, and use the pattern of touching to carry out next step scanning;
Touch pattern analysis module, after replace mode analysis, detection data are pre-read for calling, the use pattern of touching scans, whether analysis detecting data is the event of touching, if, then produce to touch and indicate and perform next step and non-ly touch pattern analysis, otherwise directly enter next step and non-ly touch pattern analysis;
Non-ly touch pattern analysis module, after replace mode analysis, detection data are pre-read for calling, the non-pattern of touching is used to analyze, determine whether non-ly to touch event, if it is produce non-touching indicate and return initial described replace mode analysis, if not then directly entering the most initial replace mode analysis;
Analysis result sending module, for the analysis result of receiving and analyzing module, and sends it to data transmitter.
4. the system of the anti-pin detection of electric capacity according to claim 1, it is characterized in that, described data-carrier store comprises:
Data memory module, the history gathered for storing described capacitive sensing device detects data, being also provided with for judging that whether Detection Information is the threshold value of outside rogue attacks, when described data-analyzing machine analysis detecting data, calling the detection threshold that this is preset.
5. the system of the anti-pin detection of electric capacity according to claim 1, it is characterized in that, described data transmitter comprises:
Data resolution module, for receiving the analysis result of described data-analyzing machine, resolves described analysis result;
Information sending module; according to the analysis result of described data resolution module; sending corresponding information to protected cipher input equipment, if analysis result is for extraneous illegal detection being detected, then sending request the request disconnecting information with the external world and input to cipher input equipment.
6. a method for the anti-pin detection of electric capacity, it is characterized in that, the method comprises:
Detect the cipher input equipment environmental capacitance change protected, gather the concurrent count value sending capacitance variations, the environment temperature composition of C meter numerical value and current time detects data;
Receive the detection data that capacitive sensing device sends, according to the difference of temperature and state, analyze the change of C meter numerical value, use replace mode analysis simultaneously successively, touch pattern analysis, non-ly touch pattern analysis, whether there is NOT-circuit contact detection, draw analysis result;
Store history Detection capacitance count value, and be preset with detection threshold;
Receive the analysis result that data-analyzing machine sends, the data in analytic results, and send corresponding solicited message to cipher input equipment.
7. the method for the anti-pin detection of the electric capacity according to right 6, it is characterized in that, the method also comprises:
Be arranged on the capacitance data acquisition module of cipher input equipment inside, when detecting that the external world has the behavior of input password, the change of induction cipher input equipment environmental capacitance, and gather repeatedly C meter numerical value, simultaneously also can acquisition testing data, and detection data are sent to described data-analyzing machine.
8. the method for the anti-pin detection of the electric capacity according to right 6, it is characterized in that, the method also comprises:
Receive the detection data of capacitance data dispensing device, resolve and pre-read detection data;
Contrast according to the detection threshold that detection data and described data-carrier store are preset, the capacitor square count value of analysis result is greater than the threshold value of default result detection, then be expressed as NOT-circuit contact event, produce NOT-circuit contact event flag, and make counter add one, when the C meter numerical value of analysis result is less than the threshold value of default result detection, then represent not to be NOT-circuit contact event, then can not produce NOT-circuit contact event, counter values is constant;
Call and pre-read detection data, replace mode is used to scan, whether analysis detecting data is NOT-circuit contact event, if it is exit replace mode scanning, produce the covering event of NOT-circuit contact, make counter add one simultaneously, and then perform the predetermined threshold value that the straight Counter Value accumulated value of said process several meets NOT-circuit contact replace mode, if be not NOT-circuit contact event, then make counter values reset, and use the pattern of touching to carry out next step scanning;
Call and pre-read detection data after replace mode analysis, the use pattern of touching scans, and whether analysis detecting data is the event of touching, if, then produce to touch and indicate and perform next step and non-ly touch pattern analysis, otherwise directly enter next step and non-ly touch pattern analysis;
Call and pre-read detection data after replace mode analysis, the non-pattern of touching is used to analyze, determine whether non-ly to touch event, if it is produce non-touching and indicate and return initial described replace mode analysis, if not then directly entering the most initial replace mode analysis;
The analysis result of receiving and analyzing module, and send it to data transmitter.
9. the method for the anti-pin detection of the electric capacity according to right 6, it is characterized in that, the method also comprises:
Store the history that described capacitive sensing device gathers and detect data, being also provided with for judging that whether Detection Information is the threshold value of outside rogue attacks, when described data-analyzing machine analysis detecting data, calling the detection threshold that this is preset.
10. the method for the anti-pin detection of the electric capacity according to right 6, it is characterized in that, the method also comprises:
Receive the analysis result of described data-analyzing machine, resolve described analysis result;
According to the analysis result of described data resolution module, sending corresponding information to protected cipher input equipment, if analysis result is for extraneous illegal detection being detected, then sending request the request disconnecting information with the external world and 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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| 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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| 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 |
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