CN102542192A - Method and device for carrying out selective starting on USB (Universal Serial Bus) device, and computer terminal - Google Patents
Method and device for carrying out selective starting on USB (Universal Serial Bus) device, and computer terminal Download PDFInfo
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Abstract
The invention discloses a method and device for carrying out selective starting on a USB (Universal Serial Bus) device, and a computer terminal. By applying the embodiment of the invention, the selective starting can be conveniently and quickly carried out on the USB device, wherein not only can the identification speed be fast, but also the identification precision is high, and the operation is simple and convenient and is transparent for a user, i.e., the user does not need to carry out any processes, thus the user can conveniently use when the safety of a system is ensured.
Description
Technical field
The present invention relates to field of computer technology, particularly a kind of method, device and terminal that USB device is carried out selective enabling.
Background technology
Along with being widely used of USB device (USB device), when bringing great convenience, also computer security management has been brought very big influence to people.From the safety management angle of company, both hoped that the employee was convenient to use USB device, like USB mouse/keyboard etc., hope that again the secret of company is not revealed away through the USB memory device by the employee.
At present, the management to USB device mainly contains following two kinds of solutions:
Scheme 1:
All USB mouths of computing machine are cut off, forbid all USB devices.
Such scheme adopts the mode of imposing uniformity without examining individual cases to limit all USB devices, lets the employee can't use any USB device, though made things convenient for management too inflexible, even can influence normal work.
Scheme 2:
Bios code through very complicated is simulated the USB keyboard/mouse employed specific protocols of minority USB device such as (USB keyboard/mouse), and other USB device all can not use.
Though such scheme can carry out selective enabling to USB device in theory; But the bios code of realization above-mentioned functions is complexity very; And limitation and extensibility are all very poor, when needs use the USB device of other agreements, need revise a large amount of bios codes again.
Thus it is clear that, under present applied environment, be difficult to realize selective enabling or forbidding to USB device.
Summary of the invention
The embodiment of the invention provides a kind of USB device is carried out method, device and the terminal of selective enabling, can conveniently carry out selective enabling to USB device, also user's use easily when guaranteeing security of system.
The embodiment of the invention provides a kind of USB device has been carried out the method for selective enabling, comprises the controller modular converter with first mode of operation and second mode of operation; To be first port be connected with first control port in first group of USB control port said first mode of operation, and to be first port be connected with first control port in second group of USB control port said second mode of operation;
After identifying the USB device of USB device that is connected with said first port, control said controller modular converter and switch to second mode of operation by first mode of operation for the permission use.
Wherein, said identification is carried out by Basic Input or Output System (BIOS), perhaps, is carried out by first operating system, perhaps, is carried out by first application program.
Wherein, before identifying the USB device of USB device that is connected with said first port, also comprise for the permission use:
Said USB device is carried out the initialization operation first time;
After the said controller modular converter of control switches to second mode of operation by first mode of operation, also comprise: said USB device is carried out the initialized operation second time.
Wherein, said first group of USB control port controlled by Basic Input or Output System (BIOS).
Wherein, said method also comprises: if identify said USB device is the USB device that bans use of, and then keeps said controller modular converter to be in first mode of operation, forbids said USB device.
Wherein, Controlling said controller modular converter switches to the second mode of operation mode by first mode of operation and comprises: send high level or low level to said controller modular converter, control said controller modular converter and switch to the second mode of operation mode by first mode of operation.
Wherein, the step of discerning the safe class of said USB device comprises:
Discern the title of said USB device,, confirm the safe class of said USB device according to the corresponding relation of predefined USB device title and safe class.
The embodiment of the invention also provides a kind of USB device has been carried out the device of selective enabling, has first mode of operation and second mode of operation; To be first port be connected with first control port in first group of USB control port said first mode of operation, and to be first port be connected with first control port in second group of USB control port said second mode of operation; Said device comprises:
Identification module is used for after identifying the USB device of USB device for the permission use that is connected with said first port, sending the recognition result that allows use;
The controller modular converter is used for switching to second mode of operation according to said recognition result by first mode of operation.
Wherein, said identification module is in Basic Input or Output System (BIOS), perhaps, is in first operating system, perhaps, is in first application program.
Wherein, said device also comprises:
First initialization module is used to identify before the USB device of USB device for the permission use that is connected with said first port, and said USB device is carried out the initialization operation first time;
Second initialization module is used for after the said controller modular converter of control switches to second mode of operation by first mode of operation, said USB device being carried out the initialized operation second time.
Wherein, said first group of USB control port controlled by Basic Input or Output System (BIOS).
Wherein, said identification module after also being used to discern said USB device and being the USB device that bans use of, sends and allows the recognition result that uses;
Said controller modular converter is used for keeping said controller modular converter to be in first mode of operation according to said recognition result, forbids said USB device.
Wherein, said controller modular converter comprises:
At least one on-off circuit submodule, the quantity of said on-off circuit submodule is identical with the quantity of first port; First end points of said each on-off circuit submodule is connected with one first port, and second end points is connected with first control port that first and second is organized in the USB control port respectively with the 3rd end points.
The embodiment of the invention also provides a kind of terminal, comprising: CPU, and memory storage, said terminal also comprises:
Controller modular converter with first mode of operation and second mode of operation;
To be first port be connected with first control port in first group of USB control port said first mode of operation,
To be first port be connected with first control port in second group of USB control port said second mode of operation; Said first group of USB control port controlled by Basic Input or Output System (BIOS); Said terminal also comprises:
Identification module is used for after identifying the USB device of USB device for the permission use that is connected with said first port, sending the recognition result that allows use;
Said controller modular converter is used for switching to second mode of operation according to said recognition result by first mode of operation.
Use the embodiment of the invention, can conveniently carry out selective enabling to USB device, not only the speed of identification is fast; And the accuracy of identification is high; Easy and simple to handle, the user is transparent relatively, does not promptly need the user to do any processing; Like this, also convenient for users to use when guaranteeing security of system.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of method flow diagram that USB device is carried out selective enabling according to the embodiment of the invention;
Fig. 2 is a kind of concrete application example according to the embodiment of the invention;
Fig. 3 is a kind of apparatus structure synoptic diagram that USB device is carried out selective enabling according to the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Referring to Fig. 1, it is a kind of USB device to be carried out the method flow diagram of selective enabling, in this flow process, comprises the controller modular converter with first mode of operation and second mode of operation; To be first port be connected with first control port in first group of USB control port said first mode of operation, and to be first port be connected with first control port in second group of USB control port said second mode of operation; Said flow process specifically comprises:
Wherein, above-mentioned identification is carried out by Basic Input or Output System (BIOS), perhaps, is carried out by first operating system, perhaps, is carried out by first application program;
Need to prove, before identifying the USB device of USB device that is connected with said first port, also comprise: said USB device is carried out the initialization operation first time for the permission use; After the said controller modular converter of control switches to second mode of operation by first mode of operation, also comprise: said USB device is carried out the initialized operation second time.
Need to prove that above-mentioned first and second group USB control port is controlled by different main body respectively.Wherein, first group of USB control port controlled by Basic Input or Output System (BIOS).
Need to prove that method shown in Figure 1 can also comprise: if identify said USB device is the USB device that bans use of, and then keeps said controller modular converter to be in first mode of operation, forbids said USB device.
Need to prove; Above-mentioned control controller modular converter switches to the second mode of operation mode by first mode of operation and can comprise: send high level or low level to the controller modular converter, control said controller modular converter and switch to the second mode of operation mode by first mode of operation.
Need to prove that the step of discerning the safe class of said USB device can comprise: discern the title of said USB device,, confirm the safe class of said USB device according to the corresponding relation of predefined USB device title and safe class.
Below in conjunction with an instantiation the application is elaborated again.
Referring to Fig. 2, it is a kind of concrete application example according to the embodiment of the invention.
At first all USB control ports are divided into 2 groups in the present embodiment; Wherein one group is called first group of USB control port; Another group is called second group of USB control port; Wherein, first group of USB control port controlled by A controller (A controller), and second group of USB control port controlled by B controller (B controller).In the present embodiment, A controller is controlled by BIOS, and B controller is controlled by operating system (OS).
Secondly, through controller modular converter of hardware setting, this controller switches module has two mode of operations; Wherein, To be first port be connected with first control port in first group of USB control port said first mode of operation, and to be first port be connected with first control port in second group of USB control port said second mode of operation, and said first port is the port of circumscribed USB equipment; Be appreciated that above-mentioned first port can exist a plurality of.Under the default situations, the controller modular converter is connected first group of USB control port of first port and BIOS control, with second group of USB control port disconnection of first port and OS control.
Above-mentioned controller modular converter can be realized by any switch or circuit, as long as it can satisfy the requirement of usb protocol interface.For example, a kind of possible situation is that the controller modular converter comprises: at least one on-off circuit submodule, and the quantity of said on-off circuit submodule is identical with the quantity of first port; First end points of said each on-off circuit submodule is connected with one first port, and second end points is connected with first control port that first and second is organized in the USB control port respectively with the 3rd end points.
When the user has just plugged USB device (USB device), this USB device is carried out the initialization operation first time by BIOS.
The title of this USB device of BIOS identification according to the corresponding relation of predefined USB device title and safe class, is confirmed the safe class of said USB device.
For example; The first-class imported equipment of USB mouse/keyboard/shooting has first level of security; The equipment that USB flash disk/digital camera/mobile phone etc. has output function has second level of security, like this, can confirm the level of security of USB device according to the title of the USB device of being discerned.Certainly, in this application, do not limit the dividing mode and the RM of USB device level of security, as long as can identify the level of security of this USB device.
When if BIOS identifies USB device that the user just inserted for the device of permission such as USBkeyboard/mouse/CAM etc.; The level of just general I/O (GPIO) is drawn high (perhaps dragging down); The hardware that breaks off this USB device and A controller is connected, and couples together USB device and B controller simultaneously.
Afterwards, after OS carried out the initialization second time to this USB device, this USB device can normally use.
If it is objectionable device that BIOS when initialization, recognizes USB device, like USB flash disk etc., this moment, BIOS directly kept existing GPIO state, it was not switched to B controller, under OS, just can not use this USB device at this moment.
Need to prove, in embodiment illustrated in fig. 2, be with BIOS control A controller; OS control B controller is that example describes, in practical application, as long as A controller and Bcontroller are the Different control main bodys; For example; A controller can be controlled by first operating system, and B controller is controlled by second operating system, more for example; A controller can be controlled by first application program, and B controller can be controlled by the operating system at first application program place.
After the user uses USB device, extracts this device, need the level of GPIO be drawn to low (perhaps high), first port is connected with A controller.Concrete, the current connection status (Current Connect Status) of the USB controller that BIOS can control through inquiry OS discerns whether device be removed.
For example, the mode that exists a kind of USB of identification device whether to be removed at present: establish current state-RO, the RO=1 indication equipment is connected on the port, and RO=0 representes not have equipment to exist.Default conditions RO=0, this value only reflects the current state of this port, does not directly conform to the port status that is set.Port voltage is 0 o'clock, and value is 0.
Need to prove that whether concrete identification USB device removes mode has a variety ofly, the application does not limit concrete RM.As long as can identify USB device is removed can the level of GPIO be drawn and is low (perhaps high).
Need to prove; Above-mentioned between first mode of operation and second mode of operation, the switching through GPIO controller modular converter only is a kind of concrete implementation; Among the application, do not limit the mode of operation switching what mode to carry out the controller modular converter through.
To sum up, the application is divided into two groups to all the USB ports on the mainboard according to the difference of USB Controller (current chipset design in the usb controller more than 2 is arranged mostly), and one group is by BIOS control, abbreviates A controller as; Control by OS, abbreviate B controller as for other one group.Default value is that all USB device are controlled by A controller.When the user inserts USB device; At first be to carry out the initialization first time (rather than OS initialization) by BIOS; When if BIOS is identified as the USB device of permission, send out a GPIO enable signal, the hardware circuit of this USB device is switched on that group port of B controller control; After OS carries out the initialization second time to this USB device then, can normally use; And if BIOS recognizes device when being objectionable device, directly do not enable (disable) this USB device, no longer give OS with control, USB Device can not use under the OS system like this.
It is thus clear that, use the method that the embodiment of the invention provides, can conveniently carry out selective enabling to USB device; Not only the speed of identification is fast, and the accuracy of identification is high, easy and simple to handle; The user is transparent relatively; Promptly do not need the user to do any processing, like this, also convenient for users to use when guaranteeing security of system.
The embodiment of the invention also provides a kind of USB device has been carried out the device of selective enabling, and referring to Fig. 3, the said device of present embodiment has first mode of operation and second mode of operation; To be first port be connected with first control port in first group of USB control port said first mode of operation, and to be first port be connected with first control port in second group of USB control port said second mode of operation; Said device can comprise:
Identification module 301 is used for after identifying the USB device of USB device for the permission use that is connected with said first port, sending the recognition result that allows use;
Controller modular converter 302 is used for switching to second mode of operation according to said recognition result by first mode of operation.
Above-mentioned identification module 301 can be in Basic Input or Output System (BIOS), perhaps, is in first operating system, perhaps, is in first application program.
Said apparatus can also comprise:
First initialization module is used to identify before the USB device of USB device for the permission use that is connected with said first port, and said USB device is carried out the initialization operation first time;
Second initialization module is used for after the said controller modular converter of control switches to second mode of operation by first mode of operation, said USB device being carried out the initialized operation second time.
Above-mentioned first group of USB control port controlled by Basic Input or Output System (BIOS).
Wherein, above-mentioned identification module after also being used to discern said USB device and being the USB device that bans use of, sends and allows the recognition result that uses;
Said controller modular converter is used for keeping said controller modular converter to be in first mode of operation according to said recognition result, forbids said USB device.
Above-mentioned controller modular converter can comprise:
At least one on-off circuit submodule, the quantity of said on-off circuit submodule is identical with the quantity of first port; First end points of said each on-off circuit submodule is connected with one first port, and second end points is connected with first control port that first and second is organized in the USB control port respectively with the 3rd end points.
The embodiment of the invention also provides a kind of terminal, comprising: CPU, and memory storage, said terminal also comprises:
Controller modular converter with first mode of operation and second mode of operation;
To be first port be connected with first control port in first group of USB control port said first mode of operation,
To be first port be connected with first control port in second group of USB control port said second mode of operation; Said first group of USB control port controlled by Basic Input or Output System (BIOS); Said terminal also comprises:
Identification module is used for after identifying the USB device of USB device for the permission use that is connected with said first port, sending the recognition result that allows use;
Said controller modular converter is used for switching to second mode of operation according to said recognition result by first mode of operation.
Use device and terminal that the embodiment of the invention provides, can conveniently carry out selective enabling to USB device, not only the speed of identification is fast; And the accuracy of identification is high; Easy and simple to handle, the user is transparent relatively, does not promptly need the user to do any processing; Like this, also convenient for users to use when guaranteeing security of system.
For device and terminal embodiment, because it is basically similar in appearance to method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.
Need to prove; In this article; Relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint relation or the order that has any this reality between these entities or the operation.And; Term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability; Thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements; But also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Under the situation that do not having much more more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises said key element and also have other identical element.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the said method embodiment is to instruct relevant hardware to accomplish through program; Described program can be stored in the computer read/write memory medium; Here the alleged storage medium that gets, as: ROM/RAM, magnetic disc, CD etc.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All any modifications of within spirit of the present invention and principle, being done, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (14)
1. one kind is carried out the method for selective enabling to USB device, it is characterized in that, comprises the controller modular converter with first mode of operation and second mode of operation; To be first port be connected with first control port in first group of USB control port said first mode of operation, and to be first port be connected with first control port in second group of USB control port said second mode of operation;
After identifying the USB device of USB device that is connected with said first port, control said controller modular converter and switch to second mode of operation by first mode of operation for the permission use.
2. method according to claim 1 is characterized in that said identification is carried out by Basic Input or Output System (BIOS), perhaps, is carried out by first operating system, perhaps, is carried out by first application program.
3. method according to claim 1 is characterized in that, before identifying the USB device of USB device for the permission use that is connected with said first port, also comprises:
Said USB device is carried out the initialization operation first time;
After the said controller modular converter of control switches to second mode of operation by first mode of operation, also comprise: said USB device is carried out the initialized operation second time.
4. method according to claim 1 is characterized in that, said first group of USB control port controlled by Basic Input or Output System (BIOS).
5. method according to claim 1 is characterized in that, said method also comprises: if identify said USB device is the USB device that bans use of, and then keeps said controller modular converter to be in first mode of operation, forbids said USB device.
6. method according to claim 1; It is characterized in that; Controlling said controller modular converter switches to the second mode of operation mode by first mode of operation and comprises: send high level or low level to said controller modular converter, control said controller modular converter and switch to the second mode of operation mode by first mode of operation.
7. method according to claim 1 is characterized in that, the step of discerning the safe class of said USB device comprises:
Discern the title of said USB device,, confirm the safe class of said USB device according to the corresponding relation of predefined USB device title and safe class.
8. one kind is carried out the device of selective enabling to USB device, it is characterized in that having first mode of operation and second mode of operation; To be first port be connected with first control port in first group of USB control port said first mode of operation, and to be first port be connected with first control port in second group of USB control port said second mode of operation; Said device comprises:
Identification module is used for after identifying the USB device of USB device for the permission use that is connected with said first port, sending the recognition result that allows use;
The controller modular converter is used for switching to second mode of operation according to said recognition result by first mode of operation.
9. device according to claim 8 is characterized in that said identification module is in Basic Input or Output System (BIOS), perhaps, is in first operating system, perhaps, is in first application program.
10. device according to claim 8 is characterized in that, said device also comprises:
First initialization module is used to identify before the USB device of USB device for the permission use that is connected with said first port, and said USB device is carried out the initialization operation first time;
Second initialization module is used for after the said controller modular converter of control switches to second mode of operation by first mode of operation, said USB device being carried out the initialized operation second time.
11. device according to claim 8 is characterized in that, said first group of USB control port controlled by Basic Input or Output System (BIOS).
12. device according to claim 8 is characterized in that,
Said identification module after also being used to discern said USB device and being the USB device that bans use of, sends and allows the recognition result that uses;
Said controller modular converter is used for keeping said controller modular converter to be in first mode of operation according to said recognition result, forbids said USB device.
13. device according to claim 8 is characterized in that, said controller modular converter comprises:
At least one on-off circuit submodule, the quantity of said on-off circuit submodule is identical with the quantity of first port; First end points of said each on-off circuit submodule is connected with one first port, and second end points is connected with first control port that first and second is organized in the USB control port respectively with the 3rd end points.
14. a terminal is characterized in that, comprising: CPU, memory storage, said terminal also comprises:
Controller modular converter with first mode of operation and second mode of operation;
To be first port be connected with first control port in first group of USB control port said first mode of operation,
To be first port be connected with first control port in second group of USB control port said second mode of operation; Said first group of USB control port controlled by Basic Input or Output System (BIOS); Said terminal also comprises:
Identification module is used for after identifying the USB device of USB device for the permission use that is connected with said first port, sending the recognition result that allows use;
Said controller modular converter is used for switching to second mode of operation according to said recognition result by first mode of operation.
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| CN105824775A (en) * | 2016-03-11 | 2016-08-03 | 联想(北京)有限公司 | Electronic equipment and information processing method |
| CN107194289A (en) * | 2017-03-29 | 2017-09-22 | 山东超越数控电子有限公司 | A kind of USB interface permission control device and authority control method |
| CN108228488A (en) * | 2018-01-02 | 2018-06-29 | 联想(北京)有限公司 | A kind of processing method, device and electronic equipment |
| CN108228488B (en) * | 2018-01-02 | 2020-12-18 | 联想(北京)有限公司 | Processing method and device and electronic equipment |
| US10990081B2 (en) | 2018-01-02 | 2021-04-27 | Lenovo (Beijing) Co., Ltd. | Processing method, processing apparatus, and electronic device |
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