CN105160238A - Box capable of preventing U disk without security authentication from connecting computer - Google Patents
Box capable of preventing U disk without security authentication from connecting computer Download PDFInfo
- Publication number
- CN105160238A CN105160238A CN201510676915.9A CN201510676915A CN105160238A CN 105160238 A CN105160238 A CN 105160238A CN 201510676915 A CN201510676915 A CN 201510676915A CN 105160238 A CN105160238 A CN 105160238A
- Authority
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- China
- Prior art keywords
- pin
- usb
- analog switch
- chip microcomputer
- disk
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/44—Program or device authentication
-
- 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
- G06F21/85—Protecting input, output or interconnection devices interconnection devices, e.g. bus-connected or in-line devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2153—Using hardware token as a secondary aspect
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Computer Security & Cryptography (AREA)
- Software Systems (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Power Sources (AREA)
Abstract
The present invention discloses a box capable of preventing a U disk without security authentication from connecting a computer. The box comprises a processing unit composed of a single chip microcomputer U1, first to fourth capacitors C1-C4, a first resistor R1, a first crystal oscillator JZ1 and a reset button RST, and is characterized by further comprising a U disk identification unit, a connection control unit, an authenticated U disk indication unit and an unauthenticated U disk alarm unit. The box of the present invention is placed near the computer, is connected with an Intranet computer via a USB data cable, and can automatically block an unauthenticated U disk from connecting the Intranet computer. When the U disk inserted into the box is authenticated, the U disk is connected with the Intranet computer, while a green "authenticated U disk work indicating lamp" is on. When the U disk inserted into the box by a staff is unauthenticated, the box can make alarm sound, while a red "unauthenticated U disk alarm indicating lamp" flashes, and the box automatically blocks the unauthenticated U disk from connecting the Intranet computer, thereby further reducing the risk of information leakage.
Description
Technical field
The present invention relates to a kind of box, especially relate to a kind of box stoping the USB flash disk without safety certification to connect computing machine.
Background technology
USB flash disk without safety certification inserts office computer, has the risk making information-leakage.Information privacy is noted in order to remind staff, the office computer that generally common measure is included in use is pasted as posters such as " outer net USB flash disk are forbidden inserting inner net computer ", but the workmen that some work personnel, other unit come, trainee and the personnel temporarily taken part in the work, because awareness of safety is not strong, conveniently mobile phone is inserted inner net computer to charge the phone, or Misuse is without the USB flash disk insertion inner net computer of safety certification, causes information-leakage.
Summary of the invention
The object of the present invention is to provide a kind of box stoping the USB flash disk without safety certification to connect computing machine, it can make automatically to be connected with inner net computer through the USB flash disk of safety certification, and the USB flash disk blocked without safety certification is connected with inner net computer.
The object of the present invention is achieved like this:
A kind of box stoping the USB flash disk without safety certification to connect computing machine, comprise the box body of band circuit board and plug receptacle, be provided with the processing unit be made up of single-chip microcomputer U1,1-4 electric capacity C1-C4, the 1st resistance R1, the 1st crystal oscillator JZ1, reset button RST on circuit boards, feature is: be also provided with USB flash disk recognition unit, connection control unit, certification USB flash disk indicating member and unverified USB flash disk alarm unit on circuit boards, wherein:
USB flash disk recognition unit manages control chip U3 by USB, 5-6 electric capacity C5-C6, the 2nd crystal oscillator JZ2 form; Connection control unit is made up of analog switch U5, computer end USB interface U4, USB slot U6.Certification USB flash disk indicating member is made up of green LED LED2, the 4th resistance R4; Unverified USB flash disk alarm unit is made up of red light emitting diodes LED1,2-3 resistance R2-R3, hummer BEEP, triode U2.
The present invention is placed on computing machine side, and be connected with inner net computer by USB data line, when USB flash disk inserts box, USB flash disk recognition unit can import the information of this dish into processing unit, and the judgment mechanism pre-set by processing unit differentiates it is whether the safe U disc of certification.If so, then processing unit control USB flash disk is connected with computing machine, controls " certification USB flash disk relay indicating light " bright simultaneously; If not then processing unit controls red " unverified USB flash disk alarm lamp " flicker, and hummer sends the chimes of doom of " dripping ", in order to warn staff simultaneously.
The present invention has and easily according to the USB flash disk whether being through safety certification inserted, can send different cues, have easy to use, the simple advantage of structure.The USB flash disk that it can block unauthenticated is automatically connected with inner net computer, thus reduces the risk of information-leakage further.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is circuit theory diagrams of the present invention;
Wherein: in fig. 2, the value of the 1st crystal oscillator JZ1 is 22.1184M, and the value of the 2nd crystal oscillator JZ2 is 12M, and power Vcc is 3.3V, and power Vcc 1 is 5V, and power supply Vss is-15V, and power supply Vdd is 15V;
Resistance and electric capacity value as follows:
R1：10k,R2：10k，R3：1k，R4：1k，R5：1k。
C1：10F,C2：30F,C3：30F，C4：0.1F,C5：0.1F,C6：0.1F,C7：30F,C8：30F；
Fig. 3 is shell front view of the present invention;
Fig. 4 is shell rear view of the present invention;
Fig. 5 is connection diagram of the present invention, and wherein: 1 is the present invention, and 2 is USB flash disk, and 3 is USB data line, 4 is the host computer connecting office Intranet.
Embodiment
Contrast accompanying drawing below in conjunction with embodiment the present invention is described in further detail.
A kind of box stoping the USB flash disk without safety certification to connect computing machine, comprise the box body of band circuit board and plug receptacle, be provided with processing unit, USB flash disk recognition unit on circuit boards, connection control unit, certification USB flash disk indicating member, unverified USB flash disk alarm unit, wherein:
Processing unit is by single-chip microcomputer U1 (STC12LE5A60AD), 1-4 electric capacity C1-C4, 1st resistance R1, 1st crystal oscillator JZ1, reset button RST forms, the two ends of the 1st crystal oscillator JZ1 are connected on the clock end 18 of single-chip microcomputer U1 respectively, 19 pin, 2nd electric capacity C2 is connected between clock end 18 pin of single-chip microcomputer U1 and ground, 3rd electric capacity C3 is connected between clock end 19 pin of single-chip microcomputer U1 and ground, 1st electric capacity C1 one end is connected with reset terminal 9 pin of single-chip microcomputer U1 with the common port of the 1st resistance R1 one end, the other end of the 1st electric capacity C1 is connected with power Vcc, the other end ground connection of the 1st resistance R1, reset button RST is in parallel with the 1st electric capacity C1, power end 40 pin of single-chip microcomputer U1 connects power Vcc, 4th electric capacity C4 is connected in parallel between power Vcc and ground, the earth terminal 20 pin ground connection of single-chip microcomputer U1,
USB flash disk recognition unit manages control chip U3 (CH376S) by USB, 5-6 electric capacity C5-C6, the 2nd crystal oscillator JZ2 form, power end 9,27,28 pin that USB manages control chip U3 is connected with power Vcc, USB manages earth terminal 3,4, the 12 pin ground connection of control chip U3, and reset terminal 2 pin that USB manages control chip U3 is connected with power Vcc after connecting with the 5th electric capacity C5, interrupt output end 1 pin that USB manages control chip U3 is connected with interrupting input end 15 pin of single-chip microcomputer U1, address input end 8 pin that USB manages control chip U3 is connected with address output end 21 pin of single-chip microcomputer U1, the sheet that USB manages control chip U3 selects input end 18 pin and the sheet of single-chip microcomputer U1 to select output terminal 36 pin to be connected, busy condition output terminal 19 pin that USB manages control chip U3 is connected with busy condition input end 35 pin of single-chip microcomputer U1, serial clock input end 20 pin that USB manages control chip U3 is connected with serial clock output terminal 34 pin of single-chip microcomputer U1, serial data input 21 pin that USB manages control chip U3 is connected with serial data output terminal 33 pin of single-chip microcomputer U1, serial data output terminal 22 pin that USB manages control chip U3 is connected with serial data input 32 pin of single-chip microcomputer U1, the two ends of the 2nd crystal oscillator JZ2 manage the clock end 13 of control chip U3 respectively with USB, 14 pin connect, 6th electric capacity C6 is connected in parallel between power Vcc and ground, connection status output terminal 24 pin of USB management control chip U3 and the 5th resistance R5 connect and are connected the negative electrode of blue LED LED3 afterwards, the anode of blue LED LED3 is connected with power Vcc,
Connection control unit is by analog switch U5(AD7510), computer end USB interface U4, USB slot U6 forms, the earth terminal 2 pin ground connection of analog switch U5, negative power end 1 pin of analog switch U5 meets power supply Vss, 1st control end 3 pin of analog switch U5 is connected with the 1st control end 22 pin of single-chip microcomputer U1, 2nd control end 4 pin of analog switch U5 is connected with the 2nd control end 23 pin of single-chip microcomputer U1, 3rd control end 5 pin of analog switch U5 is connected with the 3rd control end 24 pin of single-chip microcomputer U1, 4th control end 6 pin of analog switch U5 is connected with the 4th control end 25 pin of single-chip microcomputer U1, power end 8 pin of analog switch U5 meets power supply Vdd, 4th signal output part 9 pin of analog switch U5 is connected with usb data+interface 2 pin of USB slot U6 with after the 2nd signal output part 13 pin parallel connection of analog switch U5, 4th signal input part 10 pin and the USB of analog switch U5 manage the data of control chip U3+hold 10 pin to be connected, 3rd signal output part 11 pin of analog switch U5 is connected with usb data-interface 3 pin of USB slot U6 with after the 1st signal output part 15 pin parallel connection of analog switch U5, 3rd signal input part 12 pin and the USB of analog switch U5 manage the data of control chip U3-hold 11 pin to be connected, 2nd signal input part 14 pin of analog switch U5 and the data of computer end USB interface U4+hold 1 pin to be connected, 1st signal input part 16 pin of analog switch U5 and the data of computer end USB interface U4-hold 2 pin to be connected, the 1 pin ground connection of USB slot U6, 4 pin of USB slot U6 connect power Vcc 1,
Unverified USB flash disk alarm unit is by red light emitting diodes LED1,2-3 resistance R2-R3, hummer BEEP, triode U2(C9013) form, the anode of red light emitting diodes LED1 connects power Vcc, the negative electrode of red light emitting diodes LED1 connects red light emitting diodes control end 6 pin of single-chip microcomputer U1 after connecting with the 3rd resistance R3, hummer control end 2 pin of single-chip microcomputer U1 connects base stage 2 pin of triode U2 after connecting with the 2nd resistance R2, collector 3 pin of triode U2 connects power Vcc, the emitter 1 pin ground connection of triode U2 after connecting with hummer BEEP;
Certification USB flash disk indicating member is made up of green LED LED2, the 4th resistance R4, the anode of green LED LED2 connects power Vcc, and the negative electrode of green LED LED2 connects green LED control end 38 pin of single-chip microcomputer U1 after connecting with the 4th resistance R4.
The present invention is connected with inner net computer by two male USB data line, as shown in Figure 5, and the USB interface of a termination main frame of two male USB data line, another termination USB of the present invention of data line.
Claims (1)
1. the box that the USB flash disk without safety certification can be stoped to connect computing machine, comprise the box body of band circuit board and plug receptacle, be provided with the processing unit be made up of single-chip microcomputer U1,1-4 electric capacity C1-C4, the 1st resistance R1, the 1st crystal oscillator JZ1, reset button RST on circuit boards, it is characterized in that: be also provided with USB flash disk recognition unit, connection control unit, certification USB flash disk indicating member and unverified USB flash disk alarm unit on circuit boards, wherein:
USB flash disk recognition unit manages control chip U3 by USB, 5-6 electric capacity C5-C6, the 2nd crystal oscillator JZ2 form, power end 9,27,28 pin that USB manages control chip U3 is connected with power Vcc, USB manages earth terminal 3,4, the 12 pin ground connection of control chip U3, and reset terminal 2 pin that USB manages control chip U3 is connected with power Vcc after connecting with the 5th electric capacity C5, interrupt output end 1 pin that USB manages control chip U3 is connected with interrupting input end 15 pin of single-chip microcomputer U1, address input end 8 pin that USB manages control chip U3 is connected with address output end 21 pin of single-chip microcomputer U1, the sheet that USB manages control chip U3 selects input end 18 pin and the sheet of single-chip microcomputer U1 to select output terminal 36 pin to be connected, busy condition output terminal 19 pin that USB manages control chip U3 is connected with busy condition input end 35 pin of single-chip microcomputer U1, serial clock input end 20 pin that USB manages control chip U3 is connected with serial clock output terminal 34 pin of single-chip microcomputer U1, serial data input 21 pin that USB manages control chip U3 is connected with serial data output terminal 33 pin of single-chip microcomputer U1, serial data output terminal 22 pin that USB manages control chip U3 is connected with serial data input 32 pin of single-chip microcomputer U1, the two ends of the 2nd crystal oscillator JZ2 manage the clock end 13 of control chip U3 respectively with USB, 14 pin connect, 6th electric capacity C6 is connected in parallel between power Vcc and ground, connection status output terminal 24 pin of USB management control chip U3 and the 5th resistance R5 connect and are connected the negative electrode of blue LED LED3 afterwards, the anode of blue LED LED3 is connected with power Vcc,
Connection control unit is by analog switch U5, computer end USB interface U4, USB slot U6 forms, the earth terminal 2 pin ground connection of analog switch U5, negative power end 1 pin of analog switch U5 meets power supply Vss, 1st control end 3 pin of analog switch U5 is connected with the 1st control end 22 pin of single-chip microcomputer U1, 2nd control end 4 pin of analog switch U5 is connected with the 2nd control end 23 pin of single-chip microcomputer U1, 3rd control end 5 pin of analog switch U5 is connected with the 3rd control end 24 pin of single-chip microcomputer U1, 4th control end 6 pin of analog switch U5 is connected with the 4th control end 25 pin of single-chip microcomputer U1, power end 8 pin of analog switch U5 meets power supply Vdd, 4th signal output part 9 pin of analog switch U5 is connected with usb data+interface 2 pin of USB slot U6 with after the 2nd signal output part 13 pin parallel connection of analog switch U5, 4th signal input part 10 pin and the USB of analog switch U5 manage the data of control chip U3+hold 10 pin to be connected, 3rd signal output part 11 pin of analog switch U5 is connected with usb data-interface 3 pin of USB slot U6 with after the 1st signal output part 15 pin parallel connection of analog switch U5, 3rd signal input part 12 pin and the USB of analog switch U5 manage the data of control chip U3-hold 11 pin to be connected, 2nd signal input part 14 pin of analog switch U5 and the data of computer end USB interface U4+hold 1 pin to be connected, 1st signal input part 16 pin of analog switch U5 and the data of computer end USB interface U4-hold 2 pin to be connected, the 1 pin ground connection of USB slot U6, 4 pin of USB slot U6 connect power Vcc 1,
Unverified USB flash disk alarm unit is made up of red light emitting diodes LED1,2-3 resistance R2-R3, hummer BEEP, triode U2, the anode of red light emitting diodes LED1 connects power Vcc, the negative electrode of red light emitting diodes LED1 connects red light emitting diodes control end 6 pin of single-chip microcomputer U1 after connecting with the 3rd resistance R3, hummer control end 2 pin of single-chip microcomputer U1 connects base stage 2 pin of triode U2 after connecting with the 2nd resistance R2, collector 3 pin of triode U2 connects power Vcc, the emitter 1 pin ground connection of triode U2 after connecting with hummer BEEP;
Certification USB flash disk indicating member is made up of green LED LED2, the 4th resistance R4, the anode of green LED LED2 connects power Vcc, and the negative electrode of green LED LED2 connects green LED control end 38 pin of single-chip microcomputer U1 after connecting with the 4th resistance R4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510676915.9A CN105160238A (en) | 2015-10-20 | 2015-10-20 | Box capable of preventing U disk without security authentication from connecting computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510676915.9A CN105160238A (en) | 2015-10-20 | 2015-10-20 | Box capable of preventing U disk without security authentication from connecting computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105160238A true CN105160238A (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510676915.9A Pending CN105160238A (en) | 2015-10-20 | 2015-10-20 | Box capable of preventing U disk without security authentication from connecting computer |
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| Country | Link |
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| CN (1) | CN105160238A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111753340A (en) * | 2020-05-18 | 2020-10-09 | 贵州电网有限责任公司 | USB interface information security prevention and control method and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201796367U (en) * | 2010-09-06 | 2011-04-13 | 航天信息股份有限公司 | Usb isolator |
| CN102760104A (en) * | 2012-06-25 | 2012-10-31 | 成都卫士通信息产业股份有限公司 | USB (Universal Serial Bus) equipment control method |
| CN103824014A (en) * | 2014-02-09 | 2014-05-28 | 国家电网公司 | Isolation certificating and monitoring method of USB (universal serial bus) port within local area network |
| CN205091745U (en) * | 2015-10-20 | 2016-03-16 | 国网江西省电力公司南昌供电分公司 | Can prevent box without safety certificate's USB flash disk linked computers |
-
2015
- 2015-10-20 CN CN201510676915.9A patent/CN105160238A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201796367U (en) * | 2010-09-06 | 2011-04-13 | 航天信息股份有限公司 | Usb isolator |
| CN102760104A (en) * | 2012-06-25 | 2012-10-31 | 成都卫士通信息产业股份有限公司 | USB (Universal Serial Bus) equipment control method |
| CN103824014A (en) * | 2014-02-09 | 2014-05-28 | 国家电网公司 | Isolation certificating and monitoring method of USB (universal serial bus) port within local area network |
| CN205091745U (en) * | 2015-10-20 | 2016-03-16 | 国网江西省电力公司南昌供电分公司 | Can prevent box without safety certificate's USB flash disk linked computers |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111753340A (en) * | 2020-05-18 | 2020-10-09 | 贵州电网有限责任公司 | USB interface information security prevention and control method and system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151216 |