WO2019090586A1

WO2019090586A1 - Mobile terminal, and computer readable storage medium for data wiping

Info

Publication number: WO2019090586A1
Application number: PCT/CN2017/110164
Authority: WO
Inventors: 木魁
Original assignee: 深圳传音通讯有限公司
Priority date: 2017-11-09
Filing date: 2017-11-09
Publication date: 2019-05-16
Also published as: CN111316277A

Abstract

A mobile terminal, and a computer readable storage medium for data wiping, said computer readable storage medium storing therein a computer program, which, when being executed by a processor, causes the following steps to be implemented: capturing a first operation instruction to start a security mode; in the security mode, selecting and entering a factory reset protection (FRP) program; in the FRP program, selecting and wiping FRP data; capturing a second operation instruction, to input password information; comparing the password information with a preset password; and when the password information matches the preset password, wiping the FRP data. According to the present application, the entry of the FRP is written into a recovery mode, and a user can wipe the personal information data in an FRP partition by inputting a correct FRP password in the recovery mode.

Description

Mobile terminal and computer readable storage medium for data erasing

Technical field

The present invention relates to the field of data erasure in mobile terminals, and more particularly to a mobile terminal and a computer readable storage medium for data erasure.

Background technique

Factory Reset Protection (FRP) is a protection measure in Android devices developed by Google that protects devices after they are stolen or lost, preventing unauthorized users from logging in or using them. If the electronic device is running Android OS 5.1 or higher, after logging in to the Google account and launching the FRP lock on this device, the relevant account information will be stored in a separate partition. If the user's mobile terminal is lost or stolen, the user does not normally brush the machine, or restores the factory settings, after restarting the device, you need to fill in the information of its Google account to complete the boot process. If the account password is forgotten, the mobile terminal cannot activate the entry interface. At the same time, the user can also clear the user's personal information by erasing the data in the FRP partition.

However, in the prior art, the drawback of the one-button erase FRP partition function implemented by the mobile terminal is that if the password of the mobile terminal is not known, the system cannot be erased, and thus the FRP partition cannot be erased. When the user forgets the password by himself but needs to clear the personal information in the smart terminal, it is difficult to implement.

Summary of the invention

To solve the above problems, the present invention provides a mobile terminal and a computer readable storage medium for data erasure. The invention writes the entry of the FRP into the recovery mode, and the user can erase the personal information data in the FRP partition by inputting the correct FRP password in the recovery mode.

Specifically, a computer readable storage medium for data erasing, on which a computer program is stored, wherein when the computer program is executed by a processor, the following steps are implemented: capturing a first operation instruction, starting security Mode, in the safe mode, selecting and entering the factory reset protection program, in the factory reset protection program, selecting to erase the factory reset protection data, capturing a second operation instruction, inputting a password information, The password information is compared with a preset password, and when the password information matches the preset password, the factory reset protection data is erased.

Preferably, capturing a first operation instruction, the step of starting the security mode comprises: capturing an operation instruction input by the pair of mobile terminals, parsing the operation instruction, obtaining an operation content, and controlling the mobile terminal to enter according to the operation content Safe mode.

Preferably, the password information is an unlock code of the factory reset protection program.

Preferably, the acquiring method of the unlocking code comprises: reading an international mobile device identity code of the mobile terminal, and retrieving an unlocking code of the mobile terminal's factory reset protection program according to the international mobile device identity code.

Preferably, when the computer program is executed by the processor, the following steps are further implemented, the security mode is parsed, the setting authority is obtained, and the entry of the factory reset protection program is written into the security mode.

Preferably, a mobile terminal includes a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein the processor executes the computer program to implement the following steps: capturing a first An operation command starts a safety mode, in which the selection and enters a factory reset protection program, in the factory reset protection program, selects an erase factory reset protection data, captures a second operation instruction, and inputs a The password information compares the password information with a preset password, and when the password information matches the preset password, erasing and restoring the factory setting protection data.

Preferably, when the processor executes the computer program, the following steps are implemented, the security mode is parsed, the setting authority is obtained, and the entry of the factory reset protection program is written into the security mode.

Compared with the prior art, the technical advantage of the present invention is that the present invention proposes a mobile terminal and a computer readable storage medium for data erasure. The invention writes the entry of the FRP into the recovery mode, and the user can erase the personal information data in the FRP partition by inputting the correct FRP password in the recovery mode.

DRAWINGS

1 is a flow chart showing the steps implemented when a computer program stored on a computer readable storage medium for data erasure is executed by a processor in accordance with a preferred embodiment of the present invention;

2 is a flow chart showing a step of automatically capturing a first operation command and starting a security mode in accordance with the present invention;

3 is a flow chart showing a step of obtaining an unlock code of the factory reset protection program in accordance with FIG. 1;

4 is a flow diagram showing the steps of a write-to-safe mode that preferably restores the factory-set protection program of FIG.

Detailed ways

The advantages of the present invention are explained in detail below with reference to the accompanying drawings and specific embodiments.

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. The following description refers to the same or similar elements in the different figures unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with aspects of the present disclosure as detailed in the appended claims.

The terms used in the present disclosure are for the purpose of describing particular embodiments only, and are not intended to limit the disclosure. The singular forms "a", "the" and "the" It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information may also be referred to as second information without departing from the scope of the present disclosure. Similarly, the second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "when" or "in response to determination"

In the following description, the use of suffixes such as "module", "component" or "unit" for indicating an element is merely an explanation for facilitating the present invention, and does not have a specific meaning per se. Therefore, "module" and "component" can be used in combination.

In the prior art, the drawback of the one-button erasure FRP partition function implemented by the mobile terminal is that if the password of the mobile terminal is not known, the system cannot be accessed, and thus the FRP partition cannot be erased. When the user forgets the password by himself but needs to clear the personal information in the smart terminal, it is difficult to implement.

In order to solve the above problems, in one aspect of the invention, a computer readable storage medium for data erasing is proposed. Referring to Figure 1, there is shown a flow diagram of the steps implemented when a computer program stored on a computer readable storage medium for data erasure is executed by a processor in accordance with a preferred embodiment of the present invention. As can be seen from the figure, in the embodiment, the steps implemented when the computer program is executed by the processor mainly include: S1: capturing a first operation instruction, starting a security mode; S2: selecting, in the security mode, selecting And enter the factory reset protection program; S3: in the factory reset protection program, select to erase the factory settings protection data; S4: capture a second operation instruction, input a password information; S5: comparing the password information with a preset password; S6: erasing and restoring the factory setting protection data when the password information matches the preset password.

Specifically, in this embodiment, the steps implemented when the computer program is executed by the processor are as follows:

S1: Capture a first operation instruction to start the safe mode

Preferably, when the mobile terminal is a mobile terminal equipped with an Android system, the security mode is: Recovery mode, which is an Android mobile terminal backup function, and refers to a data that can be internal to the Android machine. Or the mode in which the system is modified (similar to windows PE or DOS). In this mode, the user can back up or upgrade the existing system, or restore the factory settings here. The use of recovery is the same as the GHOST software on the computer, which plays a role in system backup and restoration. Of course, you can also upgrade the kernel, brush patches, and so on. Recovery is written in conjunction with the system baseband, and different baseband versions cannot be messed up. Enter the recovery interface, the user can directly use the zip format rom format on the sd card to upgrade (downgrade) the user's system.

Therefore, in this embodiment, after the user triggers the mobile terminal and sends an operation instruction to the mobile terminal, the mobile terminal enters the security mode of the mobile terminal according to the operation instruction.

Preferably, referring to FIG. 2, it is a schematic flowchart of a step of automatically capturing a first operation instruction and starting a security mode according to the present invention. As can be seen from the figure, in the embodiment, the step of capturing a first operation instruction and starting the security mode is as follows:

- Capture operation instructions input by a pair of mobile terminals

- parsing the operation instruction to obtain an operation content

Controlling the mobile terminal to enter a safe mode according to the operation content

It can be seen that, in this embodiment, the user may input an operation instruction to the mobile terminal by pressing a specific function key on the mobile terminal; after the mobile terminal senses the operation instruction, further parse the operation The operation instruction, for example, acquiring a button position of the user, a button strength, and the like, and obtaining an operation content pointed by the operation instruction according to the parsed operation instruction, thereby further controlling the mobile terminal to enter the security mode.

Wherein, more preferably, in this embodiment, the method of entering recovery:

1. After the mobile terminal is completely shut down, press and hold the volume button (up) + power button to enter the bootloader interface;

2. Press the volume button to move the cursor to the recovery line;

3. Press the power button, then the mobile terminal will automatically restart into the recovery mode.

Among them, the volume button is the cursor selection button, which can be used to move the cursor, and the power button is the confirmation button.

S2: in the safe mode, select and enter the factory reset protection program

Preferably, when the mobile terminal is a mobile terminal equipped with an Android system, the factory reset protection (FRP, Factory Reset Protection) is a protection measure in the Android device developed by Google. Protect your device after it has been stolen or lost, preventing unauthorized users from logging in or using it.

In order to prevent user information from leaking after the mobile terminal is lost, Google requires that Android 5.1 and later versions need to have FRP function and be enabled by default. This security feature prevents unauthorized users from logging in or using the device. For example, if the mobile terminal is lost or stolen, as long as the FRP function is enabled, the user can perform the operation of clearing the user data by remotely logging in to the Google account to avoid leakage of information, and the method needs to be turned on after the factory is restored. The navigation verifies that the Google account that was last logged in can enter the system and use the mobile terminal normally. The user can control the FRP function to be turned on and off through the "Settings - Developer Options - Open OEM Unlock" menu. The OEM switch is off, indicating that the FRP function is on. When FRP is turned on, Secureboot cannot be unlocked, and the fastboot flash command cannot be executed.

In the prior art, the method and steps of using the basic functions of the FRP include: FRP use = support FRP + open FRP + existing Google account, the steps are: a. Go to Settings -> Developer Options -> OEM Unlock, close the "OEM Unlock" switch (Open FRP); b. Test machine to connect to VPN, login to Google account (there is a Google account); c. Set the lock screen password. It can be seen that in the prior art, the user can process the data in the FRP only if he has and knows the Google account and its password.

With reference to FIG. 1 , in this embodiment, the user may send an operation instruction to the mobile terminal by triggering a specific button on the mobile terminal in a security mode, after the mobile terminal parses the operation instruction. And, according to the operation instruction, enter a reset factory setting protection program of the mobile terminal. Therefore, it is possible to realize the normal use of the factory reset protection program without logging into the Google account.

S3: In the factory reset protection program, select Erase and restore the factory settings protection data.

With continued reference to FIG. 1 , in this embodiment, the user may implement an operation instruction by triggering a specific button on the mobile terminal to trigger the mobile terminal to perform an operation instruction, and the mobile terminal parses the After the operation instruction, the device can be selected to erase and restore the factory setting protection data according to the operation instruction.

S4: Capture a second operation instruction, input a password information

With reference to FIG. 1, in this embodiment, after the mobile terminal senses that the user selects to erase the factory reset protection data, a password request is sent, for example, by popping up a dialog box on the display screen of the mobile terminal. . The user inputs a password information to the mobile terminal by using a keyboard or the like of the mobile terminal, that is, sends a second operation instruction; after reading the password information input by the user, the mobile terminal converts the password information into one Computer-readable digital information, such as converting decimal numbers to binary digital information, etc., and sending them out.

Specifically, the password information is an unlock code of the factory reset protection program.

More preferably, referring to FIG. 3, it is a flow diagram of a step corresponding to the unlock code of FIG. 1 that preferably obtains a factory reset protection program. As shown in the figure, in this embodiment, the method for acquiring the unlock code includes:

- reading the mobile device's international mobile device identity code

In this embodiment, the International Mobile Equipment Identity (IMEI) is an abbreviation of the international mobile device identity code, and the international mobile equipment identification code is an "electronic serial number" consisting of 15 digits, which is associated with each The phones correspond one-to-one, and the code is the only one in the world. Each handset will be assigned a globally unique set of numbers after assembly, and this number will be recorded by the manufacturer of the manufacturing process from production to delivery.

IMEI is TAC+FAC+SNR+SP, and its composition is:

1. The first 6 digits (TAC) is the "model approval number", which generally represents the model.

2. The next 2 digits (FAC) is the "final assembly number", which generally represents the place of origin.

3. The subsequent 6-digit number (SNR) is the "serial number", which generally represents the production sequence number.

4. The last 1 digit (SP) is usually "0", which is the check code and is currently reserved.

The IMEI code is attached to the logo on the back of the mobile phone (also stored in the mobile phone, which can be obtained by pressing "*#06#" on the mobile phone), and is read and written in the memory of the mobile phone. It is also the "file" and "identity number" of the mobile phone at the manufacturer.

Therefore, in this embodiment, the international mobile device identity code of the mobile terminal can be obtained by reading the identification information on the mobile terminal or by pressing “*#06#” on the mobile terminal.

Retrieving an unlock code of the factory-set protection program of the mobile terminal according to the international mobile device identity code

Continuing to refer to FIG. 3, in this embodiment, the FRP unlocking code can be queried by the IMEI in the “Query Unlocking Code” function of the FRP unlocking tool, such as the ComPartner platform.

S5: comparing the password information with a preset password

With continued reference to FIG. 1, in this implementation, after the mobile terminal captures a password information input by a user to the mobile terminal, the mobile terminal further further stores the password information with a pre-stored one in the mobile terminal. The default password is correct.

S6: when the password information matches the preset password, erasing and restoring the factory setting protection data

With continued reference to FIG. 1, in this embodiment, when the comparison result of the mobile terminal is that the password information matches the preset password, the mobile terminal may obtain the rights erasure to restore the factory setting protection data. Thus, the technical effect of bypassing the Google account password and one-click erasing the FRP partition data is realized.

Preferably, referring to FIG. 4, it is a flow diagram of a step in accordance with FIG. 1 which preferably restores the entry of the factory-set protection program to the security mode. As can be seen from the figure, in the embodiment, the proposed step of writing the entry of the factory reset protection program into the security mode includes:

- Start setting security mode permissions;

- Write the entry to the factory reset protector to safe mode.

Specifically, the recovery.img is rewritten in the Linux environment, and the split_bootimg.zip file is downloaded. The zip file contains a perl file, split_bootimg.pl script, which can read recovery.img and read the kernel and ramdisk. This script also outputs the kernel command line and board name. Unpack recovery.img; use mkbootfs tool to recreate ramdisk; use mkbootimg to recreate recovery-new.img, get a new recovery-new.img, and then brush into the third-party recovery method.

Preferably, in this embodiment, a recovery that satisfies the condition can be re-created and written into the original recovery, and the specific steps are as follows:

1. From the official package, extract the native recovery.img;

2. Solve the kernel recovery.img-kernel and ramdisk memory image of the original recovery package, and then unpack the ramdisk memory image;

3. Find a suitable third-party recovery package with good function. For example, take G6's recovery-clockwork-5.0.2.0.img as an example, and also solve the kernel kernel and ramdisk memory image, and then unpack the ramdisk memory image;

4. Prepare the kernel of the new recovery. In this embodiment, the recovery.img-kernel of the official native package is used, and only the native kernel can match the hardware of the mobile terminal;

5. Modify the ramdisk memory disk,

6. Pack the newly modified ramdisk memory disk according to the method of packing the ramdisk above;

7. According to the above package img method package to generate a new recovery-new.img;

8. Brush the new recovery-new.img into the phone;

9. Open the phone's native recovery.img, compare the file headers of the two files, and copy the original first 16 lines (000h-100h) to the new recovery.

10. Finally, the new recovery-new.img, the first three bytes of the second line are changed back to the three values just recorded, and saved.

Where recovery.img-kernel is the new kernel; ramdisk-new.gz is the new memory disk; boot-new.img is the new img generated. Boot.img or recovery.img packaged according to this method because of the base address and kernel parameters Both are correct and can be used directly on the mobile terminal.

In summary, in the present invention, a mobile terminal and a computer readable storage medium for data erasing are provided. The invention writes the entry of the FRP into the recovery mode, and the user can erase the personal information data in the FRP partition by inputting the correct FRP password in the recovery mode.

Another aspect of the present invention is to provide a mobile terminal including a memory, a processor, and a memory And a computer program executable on the processor, wherein the processor executes the computer program to implement the following steps:

S'1: capture a first operation instruction, start the security mode; S'2: in the security mode, select and enter the factory reset protection program; S'3: in the factory reset protection program, select to erase Restore factory setting protection data; S'4: capture a second operation instruction, input a password information; S'5: compare the password information with a preset password; S'6: when the password information and the location When the preset passwords match, the erase restores the factory settings protection data.

Specifically, in this embodiment, when the processor executes the computer program, the following steps are implemented:

S’1: Capture a first operation command to start safe mode

Preferably, in this embodiment, the step of capturing a first operation instruction and starting the security mode is provided by:

- Capture operation instructions input by a pair of mobile terminals

- parsing the operation instruction to obtain an operation content

Wherein, more preferably, in this embodiment, the method of entering recovery:

2. Press the volume button to move the cursor to the recovery line;

S’2: in the safe mode, select and enter the factory reset protection program

Preferably, when the mobile terminal is a mobile terminal equipped with an Android system, the factory reset protection (FRP, Factory Reset Protection) is a protection measure in the Android device developed by Google, which can be Protect the device after theft or loss, preventing unauthorized users from logging in or using it.

Preferably, in this embodiment, the user may send an operation instruction to the mobile terminal by triggering a specific button on the mobile terminal in a security mode, and after the mobile terminal parses the operation instruction, According to the operation instruction, the factory reset protection program of the mobile terminal is entered. Therefore, it is possible to realize the normal use of the factory reset protection program without logging into the Google account.

S’3: In the factory reset protection program, select Erase to restore the factory settings protection data.

In this embodiment, the user may send an operation instruction to the mobile terminal by triggering a specific button on the mobile terminal under the factory reset protection program, and after the mobile terminal parses the operation instruction, According to the operation instruction, select to erase and restore the factory setting protection data.

S'4: capture a second operation instruction, input a password information

In this embodiment, after the mobile terminal senses that the user selects to erase the factory reset protection data, a password request is sent, for example, by popping up a dialog box in the display screen of the mobile terminal. The user inputs a password information to the mobile terminal by using a keyboard or the like of the mobile terminal, that is, sends a second operation instruction; after reading the password information input by the user, the mobile terminal converts the password information into one Computer readable digital information, For example, convert a decimal number into binary digital information, etc., and send it out.

More preferably, in this embodiment, the method for acquiring the unlock code includes:

- reading the mobile device's international mobile device identity code

IMEI is TAC+FAC+SNR+SP, and its composition is:

In this embodiment, the FRP unlocking code can be queried by the IMEI in the "Query Unlocking Code" function of the FRP unlocking tool, such as the ComPartner platform.

S'5: comparing the password information with a preset password

In this implementation, after the mobile terminal captures a password information input by the user to the mobile terminal, the mobile terminal further compares the password information with a preset password pre-stored in the mobile terminal. Correct.

S'6: when the password information matches the preset password, erasing and restoring the factory setting protection data

In this embodiment, when the comparison result of the mobile terminal is that the password information matches the preset password, the mobile terminal may obtain the rights erasure restoration factory setting protection data. Thus, the technical effect of bypassing the Google account password and one-click erasing the FRP partition data is realized.

Preferably, in this embodiment, the proposed step of writing the entry of the factory reset protection program into the security mode includes:

- Start setting security mode permissions;

- Write the entry to the factory reset protector to safe mode.

1. From the official package, extract the native recovery.img;

5. Modify the ramdisk memory disk,

8. Brush the new recovery-new.img into the phone;

In summary, in the present invention, a mobile terminal is provided. The invention writes the entry of the FRP into the recovery mode of the mobile terminal, and the user can erase the personal information data in the FRP partition by inputting the correct FRP password in the recovery mode.

It should be noted that the embodiments of the present invention are preferred embodiments, and are not intended to limit the scope of the present invention. Any one skilled in the art may use the above-disclosed technical contents to change or modify the equivalent embodiments. Any modification or equivalent changes and modifications of the above embodiments in accordance with the technical spirit of the present invention are still within the scope of the technical solutions of the present invention.

Claims

A computer readable storage medium for data erasing, on which is stored a computer program, wherein the computer program is executed by a processor to implement the following steps:

Capture a first operational command to initiate safe mode,

In the safe mode, select and enter the factory reset protection program,

In the factory reset protection program, select Erase to restore the factory settings protection data.

Capturing a second operation instruction, inputting a password information,

Comparing the password information with a preset password,

When the password information matches the preset password,

Erase and restore factory settings to protect data.
The computer readable storage medium of claim 1 wherein:

Capturing a first operational instruction, the step of initiating a secure mode includes,

Capturing an operation instruction input by a pair of mobile terminals,

Parsing the operation instruction to obtain an operation content,

And controlling the mobile terminal to enter a security mode according to the operation content.
The computer readable storage medium of claim 1 wherein:

The password information is an unlock code of the factory reset protection program.
The computer readable storage medium of claim 3 wherein:

The method for obtaining the unlock code includes:

Reading the mobile device's international mobile device identity code,

Retrieving an unlock code of the factory-set protection program of the mobile terminal according to the international mobile device identity code.
The computer readable storage medium of claim 1 wherein:

The computer program is also executed by the processor to implement the following steps,

Parsing the security mode,

Get set permissions,

Write the entry to the factory reset protector to safe mode.
A mobile terminal includes a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein the processor executes the computer program to implement the following steps:

Capture a first operational command to initiate safe mode,

In the safe mode, select and enter the factory reset protection program,

In the factory reset protection program, select Erase to restore the factory settings protection data.

Capturing a second operation instruction, inputting a password information,

Comparing the password information with a preset password,

When the password information matches the preset password,

Erase and restore factory settings to protect data.
The mobile terminal of claim 1 wherein:

Capturing a first operational instruction, the step of initiating a secure mode includes,

Capturing an operation instruction input by a pair of mobile terminals,

Parsing the operation instruction to obtain an operation content,

And controlling the mobile terminal to enter a security mode according to the operation content.
The mobile terminal of claim 1 wherein:

The password information is an unlock code of the factory reset protection program.
The mobile terminal of claim 3, wherein

The method for obtaining the unlock code includes:

Reading the mobile device's international mobile device identity code,

Retrieving an unlock code of the factory-set protection program of the mobile terminal according to the international mobile device identity code.
The mobile terminal of claim 1 wherein:

The processor implements the following steps when executing the computer program,

Parsing the security mode,

Get set permissions,

Write the entry to the factory reset protector to safe mode.