WO2014190884A1

WO2014190884A1 - Method and apparatus for protecting terminal by using power-on password

Info

Publication number: WO2014190884A1
Application number: PCT/CN2014/078424
Authority: WO
Inventors: 刘小元; 孙增才
Original assignee: 华为终端有限公司
Priority date: 2013-05-30
Filing date: 2014-05-26
Publication date: 2014-12-04
Also published as: CN104217142B; CN104217142A

Abstract

Embodiments of the present invention disclose a method and an apparatus for protecting a terminal by using a power-on password. The method may comprise: after a terminal is powered on and before an operating system is loaded, obtaining a power-on password input by a user on an interface of the terminal; when the power-on password input by the user is the same as a verification password pre-stored in the terminal, loading the operating system of the terminal; and when the times that the user inputs the power-on password not same as the verification password pre-stored in the terminal exceeds the preset number of times, stopping loading the operating system of the terminal. Therefore, by using the present invention, risk of secret leakage can be reduced.

Description

Method and device for protecting terminal by power-on password

This application claims priority to Chinese Patent Application No. 201310209609.5, entitled "Method and Apparatus for Protecting Terminals by Power-on Password" on May 30, 2013, the entire contents of which are incorporated herein by reference. In the application.

TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to a method and apparatus for protecting a terminal by using a power-on password.

BACKGROUND OF THE INVENTION Current terminals (e.g., tablet computers, personal computers, etc.) can provide a screen saver password, a file encryption password, and the like to protect a terminal after the operating system is running.

On the current android, if the user opens the password setting, after the system startup is completed (the kernel has been run and the file system is mounted), after detecting that the user has set a password, the password input box is displayed to protect the user equipment.

Since the system has been started, the attacker can attack the device through USB (Universal Serial Bus) and wifi network, bypassing the security mechanism of the screen password, thereby cracking the device password. Therefore, the prior art protects the password. Insufficient strength, there is still a risk of terminal leakage.

SUMMARY OF THE INVENTION The present invention provides a method and apparatus for protecting a terminal by using a power-on password, which can reduce the leakage of the terminal. Risk.

A first aspect of the present invention provides a method for protecting a terminal by using a power-on password, which may include: obtaining, after the terminal is powered on, the power-on password input by the user on the terminal interface before loading the operating system;

When the power-on password input by the user is the same as the verification password pre-stored in the terminal, loading an operating system of the terminal;

When the power-on password input by the user is different from the pre-stored verification password in the terminal by a preset number of times, the operating system of the terminal is stopped.

With the first aspect, in the first possible implementation manner, after the terminal is powered on, the power-on password input by the user on the terminal interface is obtained before the operating system is loaded, including:

After the terminal is powered on, obtain the power-on password entered by the user on the terminal interface before running the boot loader of the operating system.

With reference to the first aspect, in a second possible implementation manner, after the terminal is powered on, the power-on password input by the user on the terminal interface is obtained before the operating system is loaded, including:

After the terminal is powered on and the terminal touch screen driver is loaded, before the operating system kernel Kernel is loaded, the power-on password entered by the user on the terminal interface is obtained.

With reference to the second aspect, the second possible implementation manner of the first aspect, in a third possible implementation manner, when the power-on password input by the user is different from the pre-stored verification password in the terminal When the number of times is set, stopping the loading of the operating system of the terminal includes: whenever the power-on password input by the user is different from the verification password pre-stored in the terminal, recording a password error in the terminal;

When the number of recorded password errors reaches a preset number of times, the operation system of the terminal is stopped.

With reference to the first aspect to the second possible implementation of the first aspect, in a fourth possible implementation, the method of the embodiment of the present invention further includes:

The verification password is stored in advance in a storage area of the terminal, and the storage area includes a storage area in the central control chip and an embedded multimedia card eMMC built in the terminal.

A second aspect of the present invention provides an apparatus for including a terminal by using a power-on password, which may include: a power-on password acquisition unit, configured to obtain, after the terminal is powered on, before the operating system is loaded, Take the power-on password entered by the user on the terminal interface;

a verification unit, configured to verify whether the power-on password input by the user obtained by the power-on password acquisition unit is the same as the verification password pre-stored in the terminal; when the verification password pre-stored in the terminal is the same, the operating system of the terminal is loaded And when the verification unit verifies that the power-on password input by the user is not the same as the pre-stored verification password in the terminal reaches a preset number of times, stopping loading the operating system of the terminal.

With reference to the second aspect, in a first possible implementation manner, the acquiring unit is specifically configured to obtain, after the terminal is powered on, the power-on password input by the user on the terminal interface before running the bootloader bootloader of the operating system.

With reference to the second aspect, in a second possible implementation manner, the acquiring unit is specifically configured to: after the terminal starts to power on and load the touch screen driver of the terminal, before loading the operating system kernel Kernel, acquiring the booting input by the user on the terminal interface password.

With reference to the second aspect to the second possible implementation of the second aspect, in a third possible implementation, the processing unit includes: loading the terminal when the verification password is pre-stored in the terminal An operating system; a recording unit, configured to record a password error in the terminal whenever the verification unit verifies that the power-on password input by the user is different from the verification password pre-stored in the terminal;

And a second processing sub-unit, configured to stop loading the operating system of the terminal when the number of password errors recorded by the recording unit in the terminal reaches a preset number of times.

With reference to the second aspect to the second possible implementation of the second aspect, in a fourth possible implementation, the apparatus of the embodiment of the present invention further includes:

And a pre-processing unit, configured to pre-store the verification password in a storage area of the terminal, where the storage area includes a storage area in the central control chip and an embedded multimedia card eMMC built in the terminal.

A third aspect of the present invention provides an apparatus for protecting a terminal by using a power-on password, which may include: a memory and a processor, wherein the memory stores a specific program, and the processor invokes the save The specific program stored in the storage, and performs the following operations:

After the terminal is powered on, obtain the power-on password entered by the user on the terminal interface before loading the operating system.

With reference to the third aspect, in a first possible implementation manner, the processor obtains a power-on password input by the user on the terminal interface before running the bootloader bootloader of the operating system after the terminal is powered on.

With reference to the third aspect, in a second possible implementation manner, the processor obtains a power-on password input by the user on the terminal interface before loading the operating system kernel Kernel after the terminal is powered on and loaded with the terminal touch screen driver.

With the third aspect to the second possible implementation of the third aspect, in a third possible implementation, the processor performs the power-on password input by the user and the pre-stored verification password in the terminal is not When the same number of times reaches the preset number, when the operating system of the terminal is stopped, the following operations are performed:

Whenever the power-on password input by the user is not the same as the verification password pre-stored in the terminal, a password error is recorded in the terminal;

With reference to the second possible implementation of the third aspect to the third aspect, in a fourth possible implementation, the processor further performs the following operations:

According to the technical solution provided by the present invention, after the terminal is powered on, before the operating system is loaded, the boot password verification is used to determine whether to load the operating system of the terminal, thereby accessing the terminal before the operating system runs. It protects the security of the terminal operating system startup and reduces the risk of terminal leakage. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are some implementations of the present invention. For example, other drawings may be obtained from those of ordinary skill in the art in light of the inventive work.

1 is a flow chart showing an embodiment of a method for protecting a terminal by a power-on password according to the present invention.

2 is a flow chart showing an embodiment of an apparatus for protecting a terminal by a power-on password according to the present invention.

Figure 3 is a block diagram showing the structure of an embodiment of the processing unit of Figure 2.

4 is a flow chart showing another embodiment of an apparatus for protecting a terminal by a power-on password according to the present invention.

DETAILED DESCRIPTION OF THE INVENTION In order to make the objects, technical solutions and advantages of the present invention more comprehensible, the present invention will be further described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a flow chart showing a first embodiment of a method for protecting a terminal by a power-on password. As shown in FIG. 1, the method of the embodiment of the present invention may include:

Step S110: After the terminal is powered on, obtain the power-on password input by the user on the terminal interface before loading the operating system.

In a specific implementation, in step S110, after the terminal is powered on, the boot password input by the user on the terminal interface is obtained before the boot loader of the operating system is run. Take a tablet with an Android operating system as an example. When the tablet is powered on, the liquid crystal display (LCD) is lit (driving the LCD, Mipi DSI interface, Framebuffer). After the operating system manufacturer logo is displayed. , running Android bootloader Before, the data corresponding to the display password box is directly written into the framebuffer, so that the password input box can be displayed on the illuminated liquid crystal display to prompt the user to input the password, and the user can input the power-on password through the physical key of the tablet. For example, the user can use the "power", "volumn" keys to achieve digital input, volumn +, used to achieve a digital increase of 1, volumn - used to achieve a digital reduction of 1, the initial value of 0, power is used to achieve confirmation, when input and After confirming a password number, the cursor moves to the next character position. After the number of digits of the power-on password input by the user reaches a predetermined length, the power-on password input by the user is obtained.

In another possible implementation manner, in step S110, after the terminal starts and loads the terminal touch screen driver, the power-on password input by the user on the terminal interface is obtained before the operating system kernel Kernel is loaded. Still taking a tablet computer loaded with an Android operating system as an example, when the tablet is powered on, the liquid crystal display (LCD) is lit, after the operating system manufacturer logo is displayed, after the touch screen touch panel driver is loaded, Before loading the Kernel of the Android operating system kernel, the password input box is displayed, prompting the user to input a password, and displaying a soft keyboard on the LCD for the user to input a password. After the user enters the password through the soft keyboard, the user obtains the power-on password.

Step S111: When the power-on password input by the user is the same as the verification password pre-stored in the terminal, the operating system of the terminal is loaded.

Step S112: When the power-on password input by the user is different from the pre-stored verification password in the terminal, the operating system of the terminal is stopped.

In a specific implementation, the verification password may be stored in a storage area of the terminal, where the storage area includes a storage area in the central control chip (for example, a read-only storage area ROM in the central control chip) and a built-in terminal. Embedded multimedia card eMMC. In this way, in step S111 and step S112, the pre-stored verification password can be called through the calling interface of the storage area. For example, for the ROM, the verification password stored in the ROM can be obtained through the callback function; and for the eMMC, the eMMC can be passed. The read/write interface obtains the verification password stored in the eMMC; compares the obtained power-on password input by the user with the pre-stored verification password, and loads when the power-on password input by the user is the same as the pre-stored verification password in the terminal. The operating system of the terminal stops loading the operating system of the terminal when the power-on password input by the user is different from the pre-stored verification password in the terminal by a preset number of times. Concrete In the present, the preset number of times may be greater than or equal to two times.

In a specific implementation, in step S112, whenever the power-on password input by the user is different from the verification password pre-stored in the terminal, a password error is recorded in the terminal (for example, it can be stored in the storage for storage). Verify the password in the storage area);

In a specific implementation, in step S112, when the number of recorded password errors reaches a preset number of times, the operating system of the terminal is stopped, and a power-on prompt is also output to the user, for example, a tablet lock may be output. Please return to the factory for repairs.

In a specific implementation, the operating system that stops loading the terminal may be: automatically shutting down the central control chip of the terminal to implement chip-level security protection, so that even if the chip is installed on another terminal, the terminal cannot be used continuously, and the terminal is guaranteed. The security of the data.

In a specific implementation, the operating system that stops loading the terminal may be: automatically shutting down the terminal. When the terminal detects that the number of times the terminal power-on password is incorrect for the preset number of times, it automatically turns off, which effectively protects the security of the terminal data.

It can be seen that, by using the technical solution provided by the present invention, after the terminal is powered on, before the operating system is loaded, the power-on password verification is used to determine whether to load the operating system of the terminal, thereby before the operating system is run. The access of the terminal is protected, the security of the terminal operating system is activated, and the risk of terminal leakage is reduced. Fig. 2 is a block diagram showing the structure of a first embodiment of the apparatus for protecting a terminal by a power-on password according to the present invention. As shown in FIG. 2, the device for protecting a terminal by using a power-on password may include: a power-on password acquisition unit 21, a verification unit 22, and a processing unit 23, where:

The power-on password obtaining unit 21 is configured to obtain, after the terminal is powered on, the power-on password input by the user on the terminal interface before loading the operating system;

The verification unit 22 is configured to verify whether the power-on password input by the user acquired by the power-on password acquisition unit 21 is the same as the verification password pre-stored in the terminal;

The processing unit 23 is configured to: when the verification unit 22 verifies that the power-on password input by the user is the same as the verification password pre-stored in the terminal, loading the operating system of the terminal; When the verification unit verifies that the power-on password input by the user is not the same as the pre-stored verification password in the terminal reaches a preset number of times, the operating system of the terminal is stopped.

In a specific implementation, the power-on password obtaining unit 21 can obtain the boot password input by the user on the terminal interface before the boot loader of the operating system is run after the terminal is powered on. Take the tablet with the Android operating system as an example. When the tablet is powered on, the liquid crystal display (LCD) is lit (driving LCD, Mipi DSI interface, Framebuffer), after displaying the operating system manufacturer logo. Before running the Android bootloader, the data corresponding to the display password box is directly written into the framebuffer, so that the password input box can be displayed on the illuminated liquid crystal display, prompting the user to input a password, and the user can input the physical key through the tablet. Password, for example, the user can use the "power", "volumn" key to achieve digital input, volumn +, used to achieve a digital increase of 1, volumn - used to achieve a digital reduction of 1, the initial value of 0, power is used to achieve confirmation, when After entering and confirming a password number, the cursor moves to the next character position. After the number of digits of the power-on password entered by the user reaches a predetermined length, the power-on password input by the user is obtained.

In a specific implementation, the power-on password obtaining unit 21 can obtain the power-on password input by the user on the terminal interface before the terminal is loaded and loaded with the touch screen driver. Still taking a tablet computer loaded with an Android operating system as an example, when the tablet is powered on, the liquid crystal display (LCD) is lit, after the operating system manufacturer logo is displayed, after the touch screen touch panel driver is loaded, Before loading the Android operating system kernel Kernel, the power-on password obtaining unit 21 displays a password input box, prompting the user to input a password, and simultaneously displaying a soft keyboard on the LCD for the user to input a password, and the user inputs the password through the soft keyboard and clicks to determine the user input. Power-on password.

Still referring to FIG. 2, in an implementation, the apparatus of the embodiment of the present invention may further include a pre-processing unit 20, configured to pre-store the verification password in a storage area of the terminal, where the storage area includes a central control chip. The storage area (for example, the read-only storage area ROM in the central control chip) and the embedded multimedia card eMMC built in the terminal.

In this way, the verification unit 22 can call the pre-stored verification password through the calling interface of the storage area. For example, for the ROM, the verification password stored in the ROM can be obtained through the callback function; and for the eMMC, the eMMC can be obtained through the eMMC read/write interface. The verification password stored in the eMMC; The obtained power-on password input by the user is compared with the pre-stored verification password.

With reference to FIG. 2 and FIG. 3, in a specific implementation, the processing unit 23 may include:

a first processing sub-unit 231, configured to: when the verification unit 22 verifies that the user-entered open password is the same as the pre-stored verification password in the terminal, loading the operating system of the terminal;

The recording unit 232 is configured to record a password error in the terminal whenever the verification unit 22 verifies that the power-on password input by the user is different from the verification password pre-stored in the terminal;

The second processing sub-unit 233 is configured to stop loading the operating system of the terminal when the number of times the password error recorded by the recording unit 232 in the terminal reaches a preset number of times. In a specific implementation, the preset number of times may be greater than or equal to two times.

In a specific implementation, when the power-on password input by the user is different from the verification password pre-stored in the terminal, the recording unit 232 records a password error in the terminal (for example, can be stored in the password for Store the storage password in the storage area);

When the number of password errors recorded by the recording unit 232 reaches a preset number of times, the second processing sub-unit 233 stops loading the operating system of the terminal.

In a specific implementation, when the second processing sub-unit 233 stops loading the operating system of the terminal, the user may also output a power-on prompt to the user through the display screen of the terminal. For example, the device may output "plate lock, please return to the factory for maintenance". Prompt message.

In a specific implementation, the operating system that stops the loading of the terminal by the second processing sub-unit 233 may specifically: automatically shut down the central control chip of the terminal to implement chip-level security protection, so that even if the chip is installed on other terminals, Can not continue to use, to ensure the security of the terminal data.

In a specific implementation, the operating system that stops the loading of the terminal by the second processing sub-unit 233 may specifically: automatically shut down the terminal. In this way, the next time the terminal detects that the terminal power-on password is incorrect for the preset number of times, it automatically shuts down, which effectively protects the security of the terminal data.

It can be seen that, by using the technical solution provided by the present invention, after the terminal is powered on, before the operating system is loaded, the power-on password verification is used to determine whether to load the operating system of the terminal, thereby before the operating system is run. Protect terminal access and implement terminal operations The security of the system startup reduces the risk of terminal compromise.

Fig. 4 is a block diagram showing the structure of a second embodiment of the apparatus for protecting a terminal by a power-on password according to the present invention. As shown in FIG. 4, it may include: a memory 41 and a processor 42, wherein the memory 41 stores a specific program, and the processor 42 may call the specific program stored in the memory 41 and execute Do the following:

When the power-on password input by the user is the same as the verification password pre-stored in the terminal, the operating system of the terminal is loaded.

In a specific implementation, the processor 42 can obtain the power-on password input by the user on the terminal interface before the boot loader of the operating system is run after the terminal is powered on. Take a tablet with an Android operating system as an example. When the tablet is powered on, on the LCD screen.

(Liquid Crystal Display, LCD) Lights up (drives LCD, Mipi DSI interface, Framebuffer). After displaying the operating system manufacturer logo, before running the Android bootloader, the data corresponding to the display password box is directly written into the framebuffer, so that The illuminated LCD display shows the password input box, prompting the user to enter the password. The user can input the power-on password through the physical key of the tablet. For example, the user can use the "power" and "volumn" keys to implement digital input, volumn +, In the implementation of the number increase 1, volumn - used to achieve a digital reduction of 1, the initial value of 0, power is used to achieve confirmation, when a password number is entered and confirmed, the cursor moves to the next character position. After the number of digits of the power-on password entered by the user reaches a predetermined length, the power-on password input by the user is obtained.

In a specific implementation, the processor 42 can obtain the power-on password input by the user on the terminal interface before the operating system kernel Kernel is loaded after the terminal starts and loads the terminal touch screen driver. Still taking a tablet computer loaded with an Android operating system as an example, when the tablet is powered on, the liquid crystal display (LCD) is lit, after the operating system manufacturer logo is displayed, after the touch screen touch panel driver is loaded, Before loading the Android kernel Kernel, the password input box is displayed, prompting the user to enter a password, and displaying a soft keyboard on the LCD. For the user to enter a password, the user enters the password through the soft keyboard and clicks OK to obtain the power-on password input by the user.

In a specific implementation, the verification password may be stored in a storage area of the terminal, where the storage area includes a storage area in the central control chip (for example, a read-only storage area ROM in the central control chip) and a built-in terminal. Embedded multimedia card eMMC. In this way, the processor 42 can call the pre-stored verification password through the calling interface of the storage area. For example, for the ROM, the verification password stored in the ROM can be obtained through the callback function; and for the eMMC, the eMMC can be obtained through the eMMC read/write interface. a verification password stored in the eMMC; comparing the obtained power-on password input by the user with a pre-stored verification password, and loading the terminal when the power-on password input by the user is the same as the verification password pre-stored in the terminal The operating system is configured to stop loading the operating system of the terminal when the power-on password input by the user is different from the pre-stored verification password in the terminal by a preset number of times. In a specific implementation, the preset number of times may be greater than or equal to two times.

In a specific implementation, when the power-on password input by the user is different from the verification password pre-stored in the terminal, the processor 42 records a password error in the terminal (for example, can be stored in the storage for verification). In the storage area of the password);

In a specific implementation, when the number of recorded password errors reaches a preset number of times, the processor 42 stops loading the operating system of the terminal, and can also output a power-on prompt to the user through the display screen of the terminal, for example, outputting "Platform lock, please return to factory for repair" message.

In a specific implementation, the operating system of the processor 42 to stop loading the terminal may specifically: automatically shut down the central control chip of the terminal to implement chip-level security protection, so that the chip cannot be continued even if the chip is installed on another terminal. Use, to ensure the security of the terminal data.

In a specific implementation, the operating system of the processor 42 to stop loading the terminal may specifically: automatically shut down the terminal. In this way, the next time the terminal detects that the terminal power-on password is incorrect for the preset number of times, it will automatically shut down, which effectively protects the security of the terminal data.

It can be seen that, by using the technical solution provided by the present invention, after the terminal is powered on, before the operating system is loaded, the power-on password verification is used to determine whether to load the operating system of the terminal. Therefore, the access of the terminal can be protected before the operating system is run, the security of the terminal operating system startup is realized, and the risk of the terminal leaking is reduced.

The above are only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and the equivalent changes made by the claims of the present invention are still within the scope of the present invention.

Claims

Rights request

1. A method of protecting a terminal through a power-on password, which is characterized by including:

After the terminal is powered on and started, before loading the operating system, obtain the power-on password entered by the user on the terminal interface;

When the power-on password input by the user is the same as the verification password pre-stored in the terminal, load the operating system of the terminal;

When the power-on password input by the user is different from the verification password pre-stored in the terminal for a preset number of times, loading of the operating system of the terminal is stopped.

2. The method of protecting a terminal through a power-on password as claimed in claim 1, characterized in that after the terminal is powered on and started and before the operating system is loaded, the power-on password input by the user on the terminal interface is obtained, including:

After the terminal is powered on and started, before running the bootloader of the operating system, the power-on password entered by the user on the terminal interface is obtained.

3. The method of protecting a terminal through a power-on password as claimed in claim 1, characterized in that after the terminal is powered on and started and before the operating system is loaded, the power-on password input by the user on the terminal interface is obtained, including:

After the terminal is powered on and the terminal touch screen driver is loaded, and before the operating system kernel Kernel is loaded, the power-on password entered by the user on the terminal interface is obtained.

4. The method of protecting a terminal through a power-on password according to any one of claims 1 to 3, characterized in that when the power-on password input by the user is different from the verification password pre-stored in the terminal for a predetermined number of times, When the number of times is set, stop loading the operating system of the terminal, including: whenever the power-on password input by the user is different from the verification password pre-stored in the terminal, recording a password error in the terminal;

When the number of recorded password errors reaches a preset number of times, loading of the operating system of the terminal is stopped.

5. The method of protecting a terminal through a power-on password as described in any one of claims 1-3, further comprising:

The verification password is stored in the storage area of the terminal in advance. The storage area includes the storage area in the central control chip and the embedded multimedia card eMMC built into the terminal.

6. A device containing a terminal through a power-on password, characterized by including: a power-on password acquisition unit, used to obtain the power-on password entered by the user on the terminal interface after the terminal is powered on and started before the operating system is loaded;

Verification unit, used to verify whether the user-entered power-on password obtained by the power-on password acquisition unit is the same as the verification password pre-stored in the terminal; when the verification password pre-stored in the terminal is the same, load the operating system of the terminal ; When the verification unit verifies that the power-on password input by the user is different from the verification password pre-stored in the terminal for a preset number of times, it stops loading the operating system of the terminal.

7. The device for protecting a terminal through a power-on password as claimed in claim 6, wherein the acquisition unit is specifically configured to obtain the user's information on the terminal interface after the terminal is powered on and before running the bootloader of the operating system. The power-on password entered on.

8. The device for protecting a terminal through a power-on password as claimed in claim 6, wherein the acquisition unit is specifically configured to obtain the user's information after the terminal is powered on and started and the terminal touch screen driver is loaded, and before the operating system kernel Kernel is loaded. The power-on password entered on the terminal interface.

9. The device for protecting a terminal through a power-on password according to any one of claims 6 to 8, characterized in that the processing unit includes: when the verification password is the same as the verification password pre-stored in the terminal, load the terminal operating system; a recording unit, configured to record a password in the terminal whenever the verification unit verifies that the power-on password input by the user is different from the verification password pre-stored in the terminal mistake;

The second processing subunit is configured to stop loading the operating system of the terminal when the number of password errors recorded by the recording unit in the terminal reaches a preset number.

10. The device for protecting a terminal through a power-on password as claimed in any one of claims 6 to 8, further comprising:

A preprocessing unit, configured to store the verification password in a storage area of the terminal in advance. The storage area includes a storage area in a central control chip and an embedded multimedia card eMMC built into the terminal.

11. A device for protecting a terminal through a power-on password, characterized in that it includes: a memory and a processor, where a specific program is stored in the memory, and the processor calls the specific program stored in the memory and executes it. Proceed as follows:

12. The device for protecting a terminal through a power-on password as claimed in claim 11, wherein the processor obtains user input on the terminal interface after the terminal is powered on and before running the bootloader of the operating system. power-on password.

13. The device for protecting a terminal through a power-on password as claimed in claim 11, wherein the processor obtains the user's information on the terminal interface after the terminal is powered on and started and the terminal touch screen driver is loaded, and before the operating system kernel Kernel is loaded. The power-on password entered on.

14. The device for protecting a terminal through a power-on password as claimed in any one of claims 11-13, It is characterized in that, when the processor executes the power-on password input by the user and the verification password pre-stored in the terminal to be different for a preset number of times, when it stops loading the operating system of the terminal, the following operations are specifically performed: :

Whenever the power-on password entered by the user is different from the verification password pre-stored in the terminal, a password error is recorded in the terminal;

15. The device for protecting a terminal through a power-on password according to any one of claims 11 to 13, characterized in that the processor also performs the following operations: