CN106570993A - Matrix keyboard security improving method, device and keyboard - Google Patents
Matrix keyboard security improving method, device and keyboard Download PDFInfo
- Publication number
- CN106570993A CN106570993A CN201610918945.0A CN201610918945A CN106570993A CN 106570993 A CN106570993 A CN 106570993A CN 201610918945 A CN201610918945 A CN 201610918945A CN 106570993 A CN106570993 A CN 106570993A
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- scanning sequency
- keyboard
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- origin
- randomized blocks
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Classifications
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
- G07G1/00—Cash registers
- G07G1/0018—Constructional details, e.g. of drawer, printing means, input means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/82—Protecting input, output or interconnection devices
- G06F21/83—Protecting input, output or interconnection devices input devices, e.g. keyboards, mice or controllers thereof
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Input From Keyboards Or The Like (AREA)
Abstract
The invention discloses a matrix keyboard security improving method, device and keyboard. The method comprises the following steps: a random module is arranged and is used for obtaining signal change of a matrix keyboard lead pin, occurrence time of the signal change is recorded, a scanning sequence instruction is read and output based on the occurrence time, and a processing unit which is used for scanning the matrix keyboard pin is driven to change a scanning sequence based on the scanning sequence instruction. The device is used for implementing the corresponding method. The keyboard is realized based on the above method. According to the matrix keyboard security improving method, device and keyboard, based on randomness of keyboard lead pin change time, a Hash value is obtained via a Hash algorithm; a preset scanning sequence is loaded according to the Hash value, time difference of the scanning sequence is used for enabling change of electromagnetic radiation of keyboard operation, the electromagnetic radiation can be prevented from solidification and inverse operation, and keyboard input security can be improved.
Description
Technical field
The present invention relates to a kind of method of lifting matrixes keypad security, device and keyboard, belong to input equipment field.
Background technology
POS terminal is made up of central processing unit, various peripheral hardware devices and containment vessel, and POS terminal is arranged on business
Family and accept in site, collect the Transaction Information of user, including user account number and password, server is sent to by network,
The function such as realize bankcard consumption, inquiry into balance, transfer accounts.POS terminal is to collect the sensitive informations such as user cipher by button.Cause
This protection to key-press input, prevents other people from stealing, and is very important.What at present POS terminal was used mostly is matrix keyboard,
The key value pressed is obtained by way of scanning.Assume that keyboard has M rows, N row buttons, to having M rows input pin and N row defeated
Go out pin, the process of scanning is as follows：The output of row pin is high（It is low）, the input of row pin is low（It is high）；Button is pressed, certain a line pin
Input for low（It is high）, trigger the scanning of button；The pin output of the 1st row is high（It is low）, the pin that other are arranged exports low（It is high）, note
Record input value input1 of all row pins；The pin output of the 2nd row is high（It is low）, the pin that other are arranged exports low（It is high）, record
Input value input2 of all row pins；The rest may be inferred, till Nth column；By input1, input2 ..., input N are obtained
To all key values pressed.
CPU can produce electromagnetic radiation when said process is performed.Due to employing from the 1st row sweeping to Nth column every time
Order is retouched, causes the radiation pressed every time produced by same button consistent.And different buttons are pressed, above-mentioned implementation procedure is
Can be discrepant, cause electromagnetic radiation variant.Finally, the button pressed every time can be gone out by the difference identification of electromagnetic radiation
Value.
The content of the invention
In order to solve the above problems, the present invention is by providing a kind of method of lifting matrixes keypad security, device and being
System.
On the one hand the technical solution used in the present invention is a kind of method of lifting matrixes keypad security, arranges random mould
Block, the randomized blocks are used to obtain the signal intensity of matrix keyboard pin, the signal intensity time of origin are recorded, based on this
One scan sequential instructions are read and exported to the raw time, and based on the scanning sequency order-driven place of scan rectangle keyboard pin is used for
Reason unit change scanning sequency.
Preferably, the randomized blocks process the time of origin and export corresponding cryptographic Hash, base based on hash algorithm
Corresponding scanning sequency is extracted from scanning sequency group in the cryptographic Hash, scanning sequency instruction is generated based on the scanning sequency.
Preferably, the randomized blocks are additionally operable to arrange the memory cell of the storage scanning sequency group.
On the other hand the technical solution used in the present invention is a kind of device of lifting matrixes keypad security, and the device is used for
Randomized blocks are set, and the randomized blocks are used to obtain the signal intensity of matrix keyboard pin, when recording signal intensity generation
Between, one scan sequential instructions are read and exported based on the time of origin, scan rectangle is used for based on the scanning sequency order-driven
The processing unit change scanning sequency of keyboard pin.
Preferably, the randomized blocks process the time of origin and export corresponding cryptographic Hash, base based on hash algorithm
Corresponding scanning sequency is extracted from scanning sequency group in the cryptographic Hash, scanning sequency instruction is generated based on the scanning sequency.
Preferably, the randomized blocks are additionally operable to arrange the memory cell of the storage scanning sequency group.
On the other hand the technical solution used in the present invention is a kind of security matrix keyboard, including described randomized blocks, institute
Randomized blocks are stated for obtaining the signal intensity of matrix keyboard pin, the signal intensity time of origin is recorded, based on during the generation
Between read and export one scan sequential instructions, based on the scanning sequency order-driven be used for scan rectangle keyboard pin process list
Unit's change scanning sequency.
Beneficial effects of the present invention are the randomness of the time changed based on keyboard pin, and by hash algorithm one is obtained
Cryptographic Hash, according to the cryptographic Hash a default scanning sequency is loaded into, and using the time difference opposite sex of scanning sequency, makes keyboard operation
Electromagnetic radiation change draw with inverse operation with avoiding being cured, be conducive to improve keyboard input security.
Specific embodiment
With reference to embodiments the present invention will be described.
Based on inventive embodiment 1, a kind of method of lifting matrixes keypad security, randomized blocks are set, it is described random
Module is used to obtain the signal intensity of matrix keyboard pin, records the signal intensity time of origin, is read based on the time of origin
And one scan sequential instructions are exported, the processing unit for being used for scan rectangle keyboard pin based on the scanning sequency order-driven is changed
Scanning sequency.
The CPU of POS terminal（Processing unit）During operation, electromagnetic radiation, and the different radiation meetings for producing of program can be produced
It is variant.For key scan program, due to employing from the 1st row to the scanning sequency of Nth column every time, cause to press every time
Radiation produced by same button is consistent.And different buttons are pressed, scanning process is variant, also causes electromagnetic radiation to have difference
It is different.Finally, the key value pressed every time can be gone out by the difference identification of electromagnetic radiation.
By arranging a randomized blocks, the module can obtain the signal intensity of matrix keyboard pin（Can be direct
The pin for being connected to each button sentences acquisition signal intensity, or detects the signal change of keyboard pin by CPU
When change, send a signal and give randomized blocks, informed that button is triggered）；Record the time that the signal occurs（If
To be directly connected to pin, then time based on the built-in time measurement unit of module, if if the signal of the feedback of CPU,
The time that then read signal sends）；Based on the time that signal intensity occurs, the time is processed using hash algorithm, export one
Cryptographic Hash, using the cryptographic Hash as addressing code, reads default scanning sequency, packs the scanning sequency and generates a scanning
Sequential instructions, the instruction is used to drive the scanning sequency of processing unit change scanning keyboard pin.
Because the time difference of button, therefore the order for scanning change very greatly, corresponding electromagnetic radiation is also different, increases
Plus the difficulty of the measurement/calculating/positioning to electromagnetic radiation, improve the security of input through keyboard.
The randomized blocks process the time of origin and export corresponding cryptographic Hash based on hash algorithm, based on the Hash
Value extracts corresponding scanning sequency from scanning sequency group, and based on the scanning sequency scanning sequency instruction is generated.
The binary value of random length is mapped as hash algorithm the binary value of shorter regular length, and this is little by two
Hex value is referred to as cryptographic Hash.Cryptographic Hash is the unique and extremely compact numerical value representation of one piece of data.If one section of hash is bright
Text（Time）And even only change a letter of the paragraph（Different time）, subsequent Hash all will the different values of generation.
Two different inputs of the hash for same value are found, is computationally impossible, so the cryptographic Hash of data can be with
The integrality of inspection data.It is generally used for quick lookup and AES.
The randomized blocks are additionally operable to arrange the memory cell of the storage scanning sequency group.
Randomized blocks arrange one to be used to store the memory cell of scanning sequency group, wherein it is possible to be one and random mould
Block together, and the memory cell of CPU isolation, for receiving scanning sequency group in advance；It can also be the storage list combined with CPU
Unit（A storage interval is marked off in the memory cell that i.e. script POS terminal is stored to store scanning sequency group, thus may be used
To increase the extended capability to random scanning order, such as, by the agreement being associated, it is independent of the time and passes through other key elements
Calculate a scanning sequency and be applied to this programme）.
Based on inventive embodiment 2, a kind of device of lifting matrixes keypad security, the device is used to arrange random mould
Block, the randomized blocks are used to obtain the signal intensity of matrix keyboard pin, the signal intensity time of origin are recorded, based on this
One scan sequential instructions are read and exported to the raw time, and based on the scanning sequency order-driven place of scan rectangle keyboard pin is used for
Reason unit change scanning sequency.
The randomized blocks process the time of origin and export corresponding cryptographic Hash based on hash algorithm, based on the Hash
Value extracts corresponding scanning sequency from scanning sequency group, and based on the scanning sequency scanning sequency instruction is generated.
The randomized blocks are additionally operable to arrange the memory cell of the storage scanning sequency group.
Based on inventive embodiment 3, a kind of security matrix keyboard, including described randomized blocks, the randomized blocks are used
In the signal intensity for obtaining matrix keyboard pin, the signal intensity time of origin is recorded, read and export based on the time of origin
One scan sequential instructions, the processing unit change scanning for being used for scan rectangle keyboard pin based on the scanning sequency order-driven is suitable
Sequence.
The above, simply presently preferred embodiments of the present invention, the invention is not limited in above-mentioned embodiment, as long as
It reaches the technique effect of the present invention with identical means, should all belong to protection scope of the present invention.In the protection model of the present invention
Its technical scheme and/or embodiment can have a variety of modifications and variations in enclosing.
Claims (7)
1. a kind of method of lifting matrixes keypad security, it is characterised in that arrange randomized blocks, the randomized blocks are used to obtain
The signal intensity of matrix keyboard pin is taken, the signal intensity time of origin is recorded, is read and is exported based on the time of origin and sweep
Sequential instructions are retouched, the processing unit change scanning sequency of scan rectangle keyboard pin is used for based on the scanning sequency order-driven.
2. a kind of method of lifting matrixes keypad security according to claim 1, it is characterised in that the randomized blocks
The time of origin is processed based on hash algorithm and corresponding cryptographic Hash is exported, is extracted from scanning sequency group based on the cryptographic Hash
Corresponding scanning sequency, based on the scanning sequency scanning sequency instruction is generated.
3. a kind of method of lifting matrixes keypad security according to claim 2, it is characterised in that the randomized blocks
It is additionally operable to arrange the memory cell of the storage scanning sequency group.
4. a kind of device of lifting matrixes keypad security, it is characterised in that the device is used to arrange randomized blocks, described random
Module is used to obtain the signal intensity of matrix keyboard pin, records the signal intensity time of origin, is read based on the time of origin
And one scan sequential instructions are exported, the processing unit for being used for scan rectangle keyboard pin based on the scanning sequency order-driven is changed
Scanning sequency.
5. a kind of device of lifting matrixes keypad security according to claim 4, it is characterised in that the randomized blocks
The time of origin is processed based on hash algorithm and corresponding cryptographic Hash is exported, is extracted from scanning sequency group based on the cryptographic Hash
Corresponding scanning sequency, based on the scanning sequency scanning sequency instruction is generated.
6. a kind of device of lifting matrixes keypad security according to claim 5, it is characterised in that the randomized blocks
It is additionally operable to arrange the memory cell of the storage scanning sequency group.
7. a kind of security matrix keyboard, it is characterised in that including the randomized blocks described in claim 1, the randomized blocks are used
In the signal intensity for obtaining matrix keyboard pin, the signal intensity time of origin is recorded, read and export based on the time of origin
One scan sequential instructions, the processing unit change scanning for being used for scan rectangle keyboard pin based on the scanning sequency order-driven is suitable
Sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610918945.0A CN106570993A (en) | 2016-10-21 | 2016-10-21 | Matrix keyboard security improving method, device and keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610918945.0A CN106570993A (en) | 2016-10-21 | 2016-10-21 | Matrix keyboard security improving method, device and keyboard |
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| Publication Number | Publication Date |
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| CN106570993A true CN106570993A (en) | 2017-04-19 |
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ID=58534237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610918945.0A Pending CN106570993A (en) | 2016-10-21 | 2016-10-21 | Matrix keyboard security improving method, device and keyboard |
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| CN (1) | CN106570993A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111145394A (en) * | 2019-12-20 | 2020-05-12 | 上海爱信诺航芯电子科技有限公司 | Scanning control method and scanning control device for capacitive touch keys |
| CN114513593A (en) * | 2022-01-25 | 2022-05-17 | 重庆医药高等专科学校 | Mass image acquisition working method |
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| US20060107067A1 (en) * | 2004-11-15 | 2006-05-18 | Max Safal | Identification card with bio-sensor and user authentication method |
| CN101206542A (en) * | 2006-12-18 | 2008-06-25 | 汉王科技股份有限公司 | Ciphering signature writing pad with press keys and display screen |
| CN102576435A (en) * | 2009-11-09 | 2012-07-11 | 日本电气英富醍株式会社 | Handy terminal and payment method used for the handy terminal |
| CN103036681A (en) * | 2012-12-13 | 2013-04-10 | 中国工商银行股份有限公司 | Password safety keyboard device and system |
| CN103379091A (en) * | 2012-04-16 | 2013-10-30 | 上海博路信息技术有限公司 | Random verification code |
| CN104320254A (en) * | 2014-09-29 | 2015-01-28 | 飞天诚信科技股份有限公司 | Working method of intelligent key device supporting extended interface |
| CN105353889A (en) * | 2015-11-29 | 2016-02-24 | 恒宝股份有限公司 | Random scanning keyboard and scanning method therefor |
-
2016
- 2016-10-21 CN CN201610918945.0A patent/CN106570993A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5119294A (en) * | 1986-11-12 | 1992-06-02 | Omron Tateisi Electronics Company | Pos terminal group management device with memory for pre-storing different collection data ranges for each pos terminal |
| US20060107067A1 (en) * | 2004-11-15 | 2006-05-18 | Max Safal | Identification card with bio-sensor and user authentication method |
| CN101206542A (en) * | 2006-12-18 | 2008-06-25 | 汉王科技股份有限公司 | Ciphering signature writing pad with press keys and display screen |
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| CN103036681A (en) * | 2012-12-13 | 2013-04-10 | 中国工商银行股份有限公司 | Password safety keyboard device and system |
| CN104320254A (en) * | 2014-09-29 | 2015-01-28 | 飞天诚信科技股份有限公司 | Working method of intelligent key device supporting extended interface |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111145394A (en) * | 2019-12-20 | 2020-05-12 | 上海爱信诺航芯电子科技有限公司 | Scanning control method and scanning control device for capacitive touch keys |
| CN111145394B (en) * | 2019-12-20 | 2021-08-03 | 上海爱信诺航芯电子科技有限公司 | Scanning control method and scanning control device for capacitive touch keys |
| CN114513593A (en) * | 2022-01-25 | 2022-05-17 | 重庆医药高等专科学校 | Mass image acquisition working method |
| CN114513593B (en) * | 2022-01-25 | 2024-04-16 | 重庆医药高等专科学校 | Mass picture acquisition working method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170419 |
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| RJ01 | Rejection of invention patent application after publication |