CN101211651A - USB status restriction equipment and method of use thereof - Google Patents
USB status restriction equipment and method of use thereof Download PDFInfo
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- CN101211651A CN101211651A CNA2007103037417A CN200710303741A CN101211651A CN 101211651 A CN101211651 A CN 101211651A CN A2007103037417 A CNA2007103037417 A CN A2007103037417A CN 200710303741 A CN200710303741 A CN 200710303741A CN 101211651 A CN101211651 A CN 101211651A
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- 238000004891 communication Methods 0.000 claims abstract description 22
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- 238000013475 authorization Methods 0.000 claims description 49
- 238000003780 insertion Methods 0.000 claims description 36
- 230000037431 insertion Effects 0.000 claims description 36
- 230000008859 change Effects 0.000 claims description 8
- 238000000802 evaporation-induced self-assembly Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 3
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- 230000008878 coupling Effects 0.000 description 5
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- 230000006386 memory function Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
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Abstract
The invention relates to a USB state limiting device for reducing abuse of USB device and reinforcing the safety of internal sensitive information of host computer, which comprises a communication module, a control module, a connecting module, a USB port module and an authority module. The communication module is used for realizing communication. The control module is used for controlling the work of internal individual modules in the USB state limiting device, coordinate and control communication work with outside, and monitor whether USB device is inserted into the USB port. The connecting module is used for establishing the connection between the host computer connected with the USB state limiting device and the USB device which is inserted into the USB port. The USB port module is used for connecting with the USB device which is inserted into the USB port to complete information interaction. The authority module is connected with the control module, and at the same time has the functions of approval and authority. The invention further provides a using method of the USB state limiting device.
Description
Technical field
The present invention relates to information security field, relate in particular to a kind of USB status restriction equipment and using method thereof.
Background technology
In Information technology flourishing day by day today, more and more data information, individual privacy and secret of the trade storage or backup are in main frame, and these sensitive informations of storing in the main frame or backing up suffer virus or artificial the attack easily, thereby cause sensitive information to lose, lack or illegally distort, not only bring enormous economic loss, simultaneously normal work can't be proceeded to people.Therefore, the security and the confidentiality of sensitive informations such as data, privacy or secret of the trade are subject to people's attention day by day.
In the prior art, with the USB flash disk is that the USB device of representative is because it uses flexible, convenient and portable characteristics, its application in daily life work is popularized rapidly, greatly facilitate sensitive information exchange and storages such as data, brought following threat also for when yet USB device occurs daily life, work: (1) individual USB flash disk, portable hard drive, floppy disk or CD etc., on common computer, arbitrarily use ad lib, cause computer virus infection easily and spread unchecked; (2) spiteful internal staff can arbitrarily duplicate away the internal institution important information by using USB device, and the unit's of causing sensitive information is divulged a secret easily.
Summary of the invention
For solving in the prior art because the use arbitrarily ad lib of USB device such as USB flash disk, thereby may cause virus infections, spread unchecked and problem that sensitive information leakage is lost, the invention provides a kind of USB status restriction equipment and using method thereof, concrete scheme is as follows:
The USB status restriction equipment is characterized in that comprising communication module, control module, link block, USB port module and authorization module;
Described communication module is connected in described link block, is used to realize the communication between described USB status restriction equipment and the connected main frame;
Described control module is connected in described link block and described authorization module, be used to control the work of inner each module of described USB status restriction equipment, coordinate the communication work between described USB status restriction equipment of control and the connected main frame, and the USB port of monitoring described USB status restriction equipment has or not USB device to insert;
Described link block also is connected in the USB port module, is used to set up the connection between main frame that is connected with described USB status restriction equipment and the USB device of the inserting described USB port;
Described USB port module is used to connect the USB device of inserting described USB port, finishes information interaction;
Described authorization module is connected in described control module, is used to set the service regeulations of the USB device of inserting described USB port.
Described communication module can be specially PCI, PCI-X, PCI-E, ISA, EISA, SBUS or pcmcia interface module.
The service regeulations of the USB device that is connected with described USB port that described authorization module is set, comprise whether allowing the USB device of the described USB port of current insertion to be connected with main frame, the time that the USB device of the described USB port of current insertion can be allowed to operate, and the classification that is allowed to insert the USB device of described USB port.
The time that the USB device of the described USB port of current insertion can be allowed to operate can be changed.
The described classification that is allowed to insert the USB device of described USB port can be changed.
Described USB status restriction equipment authorization module can also be used for carrying out authentication when time that the USB device of changing described insertion USB port can be allowed to operate and/or classification.
The method of described authentication can be physical certifying, PIN code authentication or biological characteristic authentication.
The using method of USB status restriction equipment is characterized in that comprising the following steps:
---described USB status restriction equipment wait USB device is inserted its USB port or is had USB device to operate;
---have USB device is inserted or is had USB device to operate, and described USB status restriction equipment is checked described insertion or the current service regeulations of the USB device of operating, and judges whether it is allowed to connect or operate;
If the described USB device of---allow connects or operates, described USB device normally connects or operates, otherwise, shielding the connection of described USB device, can not operate.
Described USB status restriction equipment utilizes the service regeulations of the USB device that its inner authorization device sets, and checks the service regeulations of described USB device, judges whether to allow described USB device to be connected with main frame or operates.
The service regeulations of the USB device of the described USB port of insertion that described authorization device is set comprise the time that the USB device that whether allows current insertion USB port is connected with main frame, the USB device of the described USB port of current insertion can be allowed to operate and are allowed to insert the classification of the USB device of described USB port.
Described USB device and the main frame step of connecting that whether allows current insertion USB port also comprises the process of authentication.
Time that the USB device of the described USB port of described insertion can be allowed to operate and/or be allowed to inserts the classification of the USB device of described USB port and can change.
Described USB status restriction equipment can be installed on main frame inside by the non-hot-plug interface of PCI, PCI-X, PCI-E, ISA, EISA or SBUS.
Described USB status restriction equipment can also be connected in main frame by the PCMCIA hot-plug interface.
The step that described time that is allowed to operate and/or classification are changed can also comprise authentication.
Described authentication can be physical certifying, PIN code authentication or biological characteristic authentication.
Described main frame can be equipment such as computing machine, single-chip microcomputer, embedded system, PDA and smart mobile phone.
Beneficial effect: the present invention is by being connected in the USB status restriction equipment of main frame, after waiting for that USB status restriction equipment USB port place has USB device to insert or operate, check the service regeulations of USB device, and before checking the service regeulations of USB device, can also authenticate user's identity, can reduce the abuse of USB device, strengthen the security of the inner sensitive information of main frame.
Description of drawings
Fig. 1 is the structural representation of a kind of USB status restriction equipment provided by the invention.
Fig. 2 is the using method process flow diagram of first kind of USB status restriction equipment provided by the invention.
Fig. 3 is the using method process flow diagram of second kind of USB status restriction equipment provided by the invention.
Fig. 4 is the using method process flow diagram of the third USB status restriction equipment provided by the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
In the technical scheme that the embodiment of the invention provides, the USB status restriction equipment adopts the chip of Samsung at the S3C4510B of ARM7 exploitation, and the chip of S3C4510B is a present industry a chip commonly used, has the USB-Host function.Thus, the USB status restriction equipment has USB port, signal wire, pull-up resistor and pull down resistor.
Wherein two signal wires (D+ and D-) of USB status restriction equipment, each root signal wire all has the pull down resistor of a sub-15k Ω, and USB device such as USB flash disk have the pull-up resistor of a 1.5k Ω on D+ (equipment at full speed) or D-(low-speed device).When USB device such as USB flash disk were inserted into port of USB status restriction equipment, the upper resistance signal of USB device such as USB flash disk was high.USB status restriction equipment port detects a USB device such as USB flash disk with this and has connected.
Following examples, USB device is specially the USB flash disk with memory function, when this USB flash disk insertion with memory function is connected in the USB status restriction equipment of main frame, the USB port of USB status restriction equipment detects its place's resistance variations signal, and USB flash disk is inserted report information USB status restriction equipment, and the USB status restriction equipment is checked the service regeulations of this insertion USB flash disk, allow to be connected in main frame, set up being connected of this USB flash disk and main frame, USB flash disk is directly normal to be used, otherwise this USB flash disk conductively-closed can not be used.
Shown in Fig. 1 is a preferred embodiment of a kind of USB status restriction equipment provided by the invention, and as shown in fig. 1, this USB status restriction equipment comprises communication module 101, control module 102, link block 103, USB port module 104 and authorization module 105,
In the practical application main frame can but to be not limited to be equipment such as single-chip microcomputer, subscriber computer, embedded system, PDA and smart mobile phone, host bus can be main frame internal buss such as PCI, PCI-X, PCI-E, ISA, EISA and SBUS, also can be external buss such as PCMCIA.
In the practical application, control module 102 is specially the chip of the S3C4510B with USB-Host function.
In the present embodiment, USB status restriction equipment user identity by authentication after, can artificially change time or classification that the USB flash disk that inserts this USB port can be allowed to operate.
In the practical application, even artificially do not change time or classification that the USB flash disk of this USB port of insertion can be allowed to operate, check the service regeulations of USB flash disk at authorization module 105, judge whether the USB device classification whether this insertion USB flash disk can connect and insert is the classification that is allowed to insert, precedingly also can carry out the authentication of user's identity.
In the practical application, communication module 101, link block 103 and USB port module 104 are in connected state always, as long as just being arranged, USB device inserts USB port, this USB device can connect, operate, and the adding of control module 102, coordinate the connected state of control communication module 101, link block 103 and USB port module 104, according to the service regeulations of the USB device of inserting USB port it is become and be communicated with or interrupt.
In the present embodiment, be the authentication that realizes 105 pairs of USB status restriction equipments of authorization module user identity with external key, built-in lock module has the function that authorization module 105 is set service regeulations.
This external key specifically is used for, and opens the authentication of lock module realization to user's identity.
Lock module is used to set in advance the service regeulations whether current insertion USB flash disk can connect, and regular switch is set, and whether this rule switch can artificially be set current insertion USB flash disk and can connect.
In the practical application, can also add built-in card reader with external card and replace external key, built-in quarter, device replaced lock module during disc gage.
External card and built-in card reader are used for, and realize the authentication to USB status restriction equipment user identity.
Built-in quarter, device was used for during disc gage, USB status restriction equipment user authenticate by after, artificial control change dish value at its realizes the control change spendable time of USB flash disk at quarter.
In the practical application, can also replace external key with fingerprint capturer, built-in keypad replaces lock module.
Fingerprint capturer is used for, and gathers the USB flash disk or the USB device holder fingerprint that insert, realizes the authentication to USB status restriction equipment user identity.
Built-in keypad is used for, and after fingerprint authentication passed through, artificial setting can connect the USB flash disk or the USB device classification of use, and the USB status restriction equipment has been stored the USB device classification that can connect use in advance.
Can also realize authentication and authorization with other modes in the practical application.
Fig. 2 shows a preferred embodiment of the using method of a kind of USB status restriction equipment provided by the invention.In the present embodiment, USB device is the USB flash disk that memory function is arranged, and the USB status restriction equipment contains USB port, signal wire, and pull-up resistor and pull down resistor, concrete steps are as follows:
In the practical application, wherein two signal wires (D+ and D-) of USB status restriction equipment, each root signal wire all has the pull down resistor of a sub-15k Ω, and USB device such as USB flash disk have the pull-up resistor of a 1.5k Ω on D+ (equipment at full speed) or D-(low-speed device).When USB device such as USB flash disk were inserted into port of USB status restriction equipment, the upper resistance signal of USB device such as USB flash disk was high.USB status restriction equipment port detects a USB device such as USB flash disk with this and has inserted, and then notice USB status restriction equipment controller has new hardware insertions such as USB flash disk.
In the practical application, the USB status restriction equipment is checked the service regeulations that should insert USB flash disk in the authorization device, judge whether this USB flash disk can connect before, can also carry out the authentication of user's identity.
Authorization device has two kinds of functions of authentication and authorization, and the authorization function of authorization device also promptly inserts the service regeulations of USB flash disk, and present embodiment is specially regular switch, and the regular switch in the authorization device is in the connection status USB flash disk and can connects, otherwise can not.
In the present embodiment, regular switch in the authorization device is in the connection off-state, USB status restriction equipment user by authentication after, open the USB status restriction equipment, but artificially the regular switch in it is set to connection status USB flash disk can be connected again, execution in step 205.
In the present embodiment, USB status restriction equipment user will insert its lockhole with the key of USB status restriction equipment coupling, open lock and realize the authentication (corresponding USB status restriction equipment be equipped with lockhole and key) of authorization device to its identity.
In the practical application, can also realize the authentication of authorization device user identity by different modes such as reader identification card, collection fingerprint, input PIN code.
In the present embodiment, described USB status restriction equipment can be inserted that interface by PCMCIA heat and be connected in main frame.
In the practical application, this USB status restriction equipment can be installed in main frame inside by non-hot-plug interfaces such as PCI-X, PCI-E, ISA, EISA and SBUS.
In the present embodiment, main frame is specially subscriber computer.
Fig. 3 shows second kind of preferred embodiment of the using method of a kind of USB status restriction equipment provided by the invention.In the present embodiment, USB device is the USB flash disk that memory function is arranged, and this USB flash disk connection is available, and the USB status restriction equipment contains USB port, signal wire, and pull-up resistor and pull down resistor, as follows by concrete steps:
Step 301, USB status restriction equipment etc. by the time port have USB flash disk to insert or operate;
In the practical application, wherein two signal wires (D+ and D-) of USB status restriction equipment, each root signal wire all has the pull down resistor of a sub-15k Ω, and USB device such as USB flash disk have the pull-up resistor of a 1.5k Ω on D+ (equipment at full speed) or D-(low-speed device).When USB device such as USB flash disk were inserted into port of USB status restriction equipment, the upper resistance signal of USB device such as USB flash disk was high.USB status restriction equipment port detects a USB device such as USB flash disk with this and has inserted, and then notice USB status restriction equipment controller has new hardware insertions such as USB flash disk.
Step 302, USB flash disk connect to be used, and the USB flash disk holder checks that by the USB status restriction equipment this USB flash disk can connect service time, connected service time of the execution in step 303 of satisfied USB flash disk, otherwise, execution in step 304;
In the present embodiment, authorization device has two kinds of functions of authentication and authorization, the authorization function of authorization device also promptly inserts the service regeulations of USB flash disk, present embodiment, be specially device during disc gage at USB status restriction equipment built-in quarter, device pointer indication numeral was exactly hour numerical value that this USB flash disk can connect use, i.e. the connected service time of this USB flash disk when this carved disc gage.
Step 303, USB flash disk normal connection the in official hour uses;
Step 304, USB status restriction equipment user uses coupling card to open the USB status restriction equipment, with its at built-in quarter during disc gage the pointer of device point to the position of own needs, back execution in step 303.
In the present embodiment, USB status restriction equipment user will touch or close USB status restriction equipment with the clamping of USB status restriction equipment coupling, the USB status restriction equipment can be discerned this card, realize the authentication (corresponding USB status restriction equipment be equipped with card and built-in card reader) of authorization device to its identity, the USB status restriction equipment is opened, USB status restriction equipment user, with its at built-in quarter during disc gage the pointer of device point to the position that oneself needs, back execution in step 303.
In the practical application, can also pass through different modes such as key unlocking, collection fingerprint, input PIN code and realize the authentication of authorization device USB flash disk or its holder.
In the present embodiment, described USB status restriction equipment can be inserted that interface by PCMCIA heat and be connected in main frame.
In the practical application, this USB status restriction equipment can be installed in main frame inside by non-hot-plug interfaces such as PCI-X, PCI-E, ISA, EISA and SBUS.
In the present embodiment, main frame is specially subscriber computer.
Fig. 4 shows the third preferred embodiment of the using method of a kind of USB status restriction equipment provided by the invention.In the present embodiment, USB device is the USB flash disk that memory function is arranged, and the USB status restriction equipment contains USB port, signal wire, and pull-up resistor and pull down resistor, as follows by concrete steps:
In the practical application, wherein two signal wires (D+ and D-) of USB status restriction equipment, each root signal wire all has the pull down resistor of a sub-15k Ω, and USB device such as USB flash disk have the pull-up resistor of a 1.5k Ω on D+ (equipment at full speed) or D-(low-speed device).When USB device such as USB flash disk were inserted into port of USB status restriction equipment, the upper resistance signal of USB device such as USB flash disk was high.USB status restriction equipment port detects a USB device such as USB flash disk with this and has inserted, and then notice USB status restriction equipment controller has new hardware insertions such as USB flash disk.
In the present embodiment, the USB status restriction equipment check whether contain the classification of this insertion USB flash disk in the authorization device before, can also authenticate user's identity.
In the present embodiment, authorization device has two kinds of functions of authentication and authorization, the authorization function of authorization device also promptly inserts the service regeulations of USB flash disk, present embodiment, be specially and set in advance the classification that can connect the USB device of use in the USB status restriction equipment authorization device, be the descriptor of USB device and corresponding serviceable condition, then USB status restriction equipment USB device that classification is not set can not be used.
In the present embodiment, USB flash disk is unavailable, USB status restriction equipment user, behind finger print identifying, open the USB status restriction equipment, in authorization device, reset the classification of the USB flash disk of current insertion, promptly import descriptor and its serviceable condition of this USB flash disk by its built-in keypad, this USB flash disk can be used, execution in step 404.
In the present embodiment, the USB flash disk holder comes by the authentication of USB status restriction equipment to its fingerprint, realizes the authentication (corresponding USB status restriction equipment surface be equipped with fingerprint capturer) of authorization device to its identity.
In the practical application, can also pass through different modes such as key unlocking, reader identification card, input PIN code and realize the authentication of authorization device USB flash disk or its holder.
Step 404 is inserted USB flash disk and is normally connected use.
In the present embodiment, described USB status restriction equipment can be inserted that interface by PCMCIA heat and be connected in main frame.
In the practical application, this USB status restriction equipment can be installed in main frame inside by non-hot-plug interfaces such as PCI-X, PCI-E, ISA, EISA and SBUS.
In the present embodiment, main frame is specially subscriber computer.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (17)
1. a USB status restriction equipment is characterized in that comprising communication module, control module, link block, USB port module and authorization module;
Described communication module is connected in described link block, is used to realize the communication between described USB status restriction equipment and the connected main frame;
Described control module is connected in described link block and described authorization module, be used to control the work of inner each module of described USB status restriction equipment, coordinate the communication work between described USB status restriction equipment of control and the connected main frame, and the USB port of monitoring described USB status restriction equipment has or not USB device to insert;
Described link block also is connected in the USB port module, is used to set up the connection between main frame that is connected with described USB status restriction equipment and the USB device of the inserting described USB port;
Described USB port module is used to connect the USB device of inserting described USB port, finishes information interaction;
Described authorization module is connected in described control module, is used to set the service regeulations of the USB device of inserting described USB port.
2. USB status restriction equipment according to claim 1 is characterized in that described communication module can be specially PCI, PCI-X, PCI-E, ISA, EISA, SBUS or pcmcia interface module.
3. USB status restriction equipment according to claim 1, the service regeulations that it is characterized in that the USB device that is connected with described USB port that described authorization module is set, comprise whether allowing the USB device of the described USB port of current insertion to be connected with main frame, the time that the USB device of the described USB port of current insertion can be allowed to operate, and the classification that is allowed to insert the USB device of described USB port.
4. USB status restriction equipment according to claim 3 is characterized in that the time that the USB device of the described USB port of current insertion can be allowed to operate can change.
5. USB status restriction equipment according to claim 3 is characterized in that the described classification that is allowed to insert the USB device of described USB port can change.
6. USB status restriction equipment according to claim 1 is characterized in that described USB status restriction equipment authorization module can also be used for carrying out authentication when USB device time that can be allowed to operate of the described insertion USB port of change and/or classification.
7. USB status restriction equipment according to claim 6 is characterized in that the method for described authentication, can be physical certifying, PIN code authentication or biological characteristic authentication.
8. the using method of a USB status restriction equipment is characterized in that comprising the following steps:
---described USB status restriction equipment wait USB device is inserted its USB port or is had USB device to operate;
---have USB device is inserted or is had USB device to operate, and described USB status restriction equipment is checked described insertion or the current service regeulations of the USB device of operating, and judges whether it is allowed to connect or operate;
If the described USB device of---allow connects or operates, described USB device normally connects or operates, otherwise, shielding the connection of described USB device, can not operate.
9. the using method of USB status restriction equipment according to claim 8, it is characterized in that described USB status restriction equipment utilizes the service regeulations of the USB device of its inner authorization device setting, check the service regeulations of described USB device, judge whether to allow described USB device to be connected or operate with main frame.
10. the using method of USB status restriction equipment according to claim 8, the service regeulations that it is characterized in that the USB device of the described USB port of insertion that described authorization device is set comprise the time that the USB device that whether allows current insertion USB port is connected with main frame, the USB device of the described USB port of current insertion can be allowed to operate and are allowed to insert the classification of the USB device of described USB port.
11. the using method of USB status restriction equipment according to claim 10 is characterized in that described USB device and the main frame step of connecting that whether allows current insertion USB port, also comprises the process of authentication.
12. the using method of USB status restriction equipment according to claim 10, the classification that it is characterized in that the time that the USB device of the described USB port of described insertion can be allowed to operate and/or be allowed to insert the USB device of described USB port can be changed.
13. the using method of USB status restriction equipment according to claim 8 is characterized in that described USB status restriction equipment can be installed on main frame inside by the non-hot-plug interface of PCI, PCI-X, PCI-E, ISA, EISA or SBUS.
14. the using method of USB status restriction equipment according to claim 8 is characterized in that described USB status restriction equipment can also be connected in main frame by the PCMCIA hot-plug interface.
15. the using method of USB status restriction equipment according to claim 12 is characterized in that the step that described time that is allowed to operate and/or classification are changed can also comprise authentication.
16. the using method of USB status restriction equipment according to claim 15 is characterized in that described authentication can be physical certifying, PIN code authentication or biological characteristic authentication.
17. the using method of USB status restriction equipment according to claim 9 is characterized in that described main frame can be equipment such as computing machine, single-chip microcomputer, embedded system, PDA and smart mobile phone.
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| CN2007103037417A CN101211651B (en) | 2007-12-21 | 2007-12-21 | USB status restriction equipment and method of use thereof |
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| CN2007103037417A CN101211651B (en) | 2007-12-21 | 2007-12-21 | USB status restriction equipment and method of use thereof |
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| CN102521169A (en) * | 2011-12-30 | 2012-06-27 | 郑州信大捷安信息技术股份有限公司 | Confidential USB (universal serial bus) memory disk with display screen and security control method of confidential USB memory disk |
| CN102521169B (en) * | 2011-12-30 | 2014-10-22 | 郑州信大捷安信息技术股份有限公司 | Confidential USB (universal serial bus) memory disk with display screen and security control method of confidential USB memory disk |
| CN104144061A (en) * | 2013-05-08 | 2014-11-12 | 厦门市美亚柏科信息股份有限公司 | Mobile phone data acquisition method, device and system |
| CN104361280A (en) * | 2014-10-31 | 2015-02-18 | 山东超越数控电子有限公司 | Method for carrying out credible certification on USB storage device through SMI interrupt |
| CN104361280B (en) * | 2014-10-31 | 2017-03-08 | 山东超越数控电子有限公司 | A kind of method realizing carrying out authentic authentication to USB storage device by SMI interrupt |
| CN110471359A (en) * | 2019-09-22 | 2019-11-19 | 南京时仓信息科技有限公司 | Information security control mould group and control method suitable for embedded host |
| CN110471359B (en) * | 2019-09-22 | 2023-02-14 | 南京时仓信息科技有限公司 | Information security control module and control method suitable for embedded host |
| CN112100027A (en) * | 2020-08-31 | 2020-12-18 | 新华三信息技术有限公司 | Server maintenance method, device, equipment and machine readable storage medium |
| CN115221490A (en) * | 2022-09-20 | 2022-10-21 | 陕西天视致远航空技术有限公司 | Port information reinforcing computer and port information reinforcing method thereof |
| CN115221490B (en) * | 2022-09-20 | 2024-02-23 | 陕西天视致远航空技术有限公司 | Port information reinforcement computer and port information reinforcement method thereof |
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