CN111193751B - Factory setting restoration method and equipment - Google Patents

Abstract

The embodiments of the present application provide a method and device for restoring factory settings. The method includes: a target device receives a request message for restoring factory settings from a control terminal. The factory reset request message includes: a factory reset instruction, a device identity, and a first obfuscated value; wherein, the first obfuscated value is the control terminal based on a preset algorithm and a preset first key to restore the factory settings instruction, device The ID is encrypted. Based on the preset rule, the first obfuscated value is verified according to the factory reset request message. In the case that the verification of the first obfuscated value is passed, the instruction of restoring the factory settings is executed. Through the above solution, the security of the electronic device can be effectively improved, and the owner of the electronic device can be prevented from losing the control right of the electronic device and causing corresponding losses.

Description

Method and device for restoring factory settings

technical field

The present application relates to the field of electronic technology, and in particular, to a method and device for restoring factory settings.

Background technique

With the rapid development and wide application of network technology, more and more electronic devices have the capability of network communication, so that the management and control of electronic devices can be realized through the network.

Most of the existing electronic devices have the function of restoring the factory settings, that is to say, the electronic devices can be initialized. There are mainly two ways to restore the factory settings of the existing electronic equipment: one is to restore the factory settings through the keys of the electronic equipment, and the other is to control the electronic equipment to restore the factory settings through the network.

The two main methods of restoring the factory settings of the electronic equipment mentioned above can restore the factory settings of the electronic equipment without the consent of the owner. However, in some scenarios, the user and owner of the electronic device are not the same person, such as leased, stolen, etc., the user directly controls the electronic device to restore the factory settings through the above method of restoring the factory settings, which will cause the electronic device to be separated from the owner. control, resulting in the loss of the equipment owner.

SUMMARY OF THE INVENTION

A method and device for restoring factory settings provided by the embodiments of this specification are used to solve the following technical problem in the prior art: the electronic device does not need the owner's consent, and other people can restore the electronic device to the factory settings, resulting in electronic The equipment is out of the owner's control, resulting in corresponding losses.

On the one hand, an embodiment of the present application provides a method for restoring factory settings. The method includes: a target device receives a factory setting restore request message from a control terminal, and the factory setting restore request message includes: a factory setting restore instruction, a device identity, a The first obfuscation value; wherein, the first obfuscation value is obtained by the control terminal encrypting the factory reset instruction and the device identification based on the preset algorithm and the preset first key; based on the preset rules, according to the factory reset A setting request message is used to verify the first obfuscated value; in the case that the verification of the first obfuscated value is passed, a factory reset instruction is executed.

In a possible implementation manner, verifying the first obfuscated value in the factory reset request message based on a preset rule, specifically including: based on a preset algorithm and a preset second key, verifying the factory reset request message The factory reset instruction and the device identity in the message are encrypted to obtain the second confusion value; determine whether the first confusion value and the second confusion value in the factory reset request message are consistent; between the first confusion value and the second confusion value In the case of consistency, it is determined that the first obfuscated value has passed the verification.

In a possible implementation manner, verifying the first obfuscated value in the factory reset request message based on a preset rule, specifically including: based on a preset algorithm and a preset second key, verifying the factory reset request message Decrypt the first obfuscated value in the device to obtain the corresponding device identity; determine whether the device identity obtained after decryption is consistent with the device identity in the factory reset request message; the device identity obtained after decryption is the same as the recovery If the device IDs in the factory setting request message are consistent, it is determined that the verification of the first obfuscated value is passed.

In a possible implementation manner, before verifying the first obfuscated value in the factory reset request message based on a preset rule, the method further includes: determining that the device identity in the factory reset request message is the same as that of the target device. Identity is the same.

In a possible implementation manner, the request message for restoring factory settings further includes: a random number; the first confusion value is the control terminal based on a preset algorithm and a preset first key, which is used for restoring the factory settings instruction and device identity. , random numbers are encrypted.

In a possible implementation manner, verifying the first obfuscated value in the factory reset request message based on a preset rule, specifically including: based on a preset algorithm and a preset second key, verifying the factory reset request message The random number, the instruction for restoring factory settings, and the device identity in the message are encrypted, and the second confusion value is obtained by encrypting; determine whether the first confusion value in the request message for restoring factory settings is consistent with the second confusion value; in the first confusion value If the value is consistent with the second obfuscated value, it is determined that the first obfuscated value has passed the verification.

In a possible implementation manner, verifying the first obfuscated value in the factory reset request message based on a preset rule, specifically including: based on a preset algorithm and a preset second key, verifying the factory reset request message Decrypt the first obfuscated value in the device to obtain the corresponding device identity and random number; determine whether the device identity obtained after decryption is consistent with the device identity in the factory reset request message; and determine the random number obtained after decryption , whether it is consistent with the random number in the factory reset request message; if both are consistent, it is determined that the verification of the first obfuscated value has passed.

In a possible implementation manner, the random number is the timestamp at which the control terminal generates the factory reset request message.

In a possible implementation manner, before verifying the first obfuscated value in the factory reset request message based on a preset rule, the method further includes: determining whether the timestamp exceeds a preset threshold; when the timestamp does not exceed a preset threshold In the case of the threshold value, it is determined that the factory reset request message is a valid factory reset request message.

On the other hand, an embodiment of the present application also provides a device for restoring factory settings, the device includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores data that can be accessed by the at least one processor Executed instructions, the instructions are executed by at least one processor to enable at least one processor to:

The target device receives a factory reset request message from the control terminal, and the factory reset request message includes: a factory reset instruction, a device identity, and a first confusion value;

Wherein, the first obfuscated value is obtained by the control terminal encrypting the factory reset instruction and the device identity based on a preset algorithm and a preset first key;

Based on the preset rules and according to the factory reset request, verify the first obfuscated value;

In the case that the verification of the first obfuscated value is passed, the instruction of restoring the factory settings is executed.

In the method and device for restoring factory settings provided by the embodiments of the present application, the control terminal can add a first confusion value for security verification when sending a request message for restoring factory settings to a target device, and the first confusion value is based on a preset value. It is obtained by encrypting the information such as the factory reset instruction and the device identity identification. After receiving the factory reset request message containing the first obfuscated value, the target device can verify the first obfuscated value through a preset rule, and can execute the factory reset instruction if the verification is passed. The above solution can effectively solve the problem in the prior art that the electronic device does not need the owner's consent, and other people can restore the electronic device to factory settings, causing the electronic device to be out of the owner's control and causing loss to the owner. Moreover, the security of the electronic device can be effectively enhanced, and the user experience of the user can be improved.

Description of drawings

The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the attached image:

1 is a flowchart of a method for restoring factory settings provided by an embodiment of the present application;

2 is another flowchart of a method for restoring factory settings provided by an embodiment of the present application;

3 is another flowchart of a method for restoring factory settings provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a device for restoring factory settings according to an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of this specification clearer, the technical solutions of the present application will be clearly and completely described below with reference to the specific embodiments of this specification and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the description, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

The technical solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

In the prior art, most of the factory reset of an electronic device can be determined and executed by the user of the electronic device. Some electronic devices require the user to enter authentication information such as passwords or fingerprints. Only when the authentication information is legal can the system of the electronic device be entered. However, once the user enters the system, the user can start the electronic device to restore the factory settings. In the prior art, restoring the factory settings of the electronic device can also be controlled by the control terminal through the corresponding network, but it cannot be confirmed whether the user corresponding to the control terminal is the user or the owner of the electronic device.

Therefore, in some special cases, such as when an electronic device is stolen, the thief can restore the electronic device to its factory settings without the consent of the owner of the device, thus causing the owner of the device to lose the ownership of the electronic device. Control. For another example, if the owner of an electronic device leases the device to other users, the leased user can directly restore the electronic device to factory settings without the consent of the device owner, but the device owner loses control over the electronic device. , causing certain losses. Therefore, how to guarantee the rights and interests of the owner of the electronic device and improve the security of the factory reset of the electronic device has become an important technical issue.

FIG. 1 is a flowchart of a method for restoring factory settings provided by an embodiment of the present application. As shown in Figure 1, the method includes the following steps:

S101, the control terminal generates a request message for restoring production settings, and sends the request message for restoring factory settings to a corresponding target device.

The factory reset request message includes at least: a factory reset instruction, a device identity, and a first confusion value. The first obfuscation value may be obtained by the control terminal encrypting the factory reset instruction and the device identity identifier according to the preset algorithm and the preset first key.

For example, if the factory reset command is Command, the device identity is ID, the first key is K ₁ , and the preset algorithm is F ₁ , the first confusion value C ₁ =F ₁ (K ₁ , Command||ID).

The device identity refers to the identity of the target device and is used to uniquely identify the target device. The device identification and the first key may be pre-stored in the control terminal, or may be entered in the control terminal into which the user inputs the learned device identification and the first key, which are not added in the embodiments of this application. limited.

The control terminal mentioned here refers to a terminal device used by the owner of the electronic device, which may be, for example, an electronic device with a network communication capability, such as a smart phone and a tablet computer. A target device is an electronic device that is factory reset.

S102, the target device determines that the device identity in the factory reset request message is consistent with the identity of the target device.

The target device can first check whether the device identity in the factory reset request message is consistent with the identity of the target device; if they are consistent, perform the next step.

Through the above solution, the target device can be made to determine the corresponding factory reset request message.

S103, the target device verifies the first obfuscated value in the received factory reset request message based on a preset rule.

In some embodiments of the present application, based on a preset rule, verifying the first obfuscated value can be implemented according to the method shown in FIG. 2 :

S201 , the target device encrypts the factory reset instruction and the device identity in the factory reset request message according to a preset algorithm and a preset second key to obtain a second obfuscated value.

In this specification, the second obfuscation value is obtained by the target device encrypting the factory reset instruction and device identity in the factory reset request message based on a preset algorithm and a preset second key.

For example, the preset algorithm in the target device is F ₂ , the second key is K ₂ , the factory reset command in the factory reset request message is Command, and the device identity is ID, then the second obfuscation function C ₂ =F ₂ (K ₂ ,Command||ID).

It should be noted that both the second key and the preset algorithm in the target device may be stored in the target device in advance, and the second key and the preset algorithm may be fixed parameters and cannot be changed. Moreover, the preset algorithm mentioned here is an encryption algorithm.

S202, the target device determines whether the first confusion value and the second confusion value in the factory reset request message are consistent.

For example, when the first obfuscation function is C ₁ and the second obfuscation function is C ₂ , it is determined whether the values of C ₁ and C ₂ are the same.

S203 , in the case that the first confusion value is consistent with the second confusion value, determine that the first confusion value has passed the verification; and in the case that the first confusion value is inconsistent with the second confusion value, determine that the first confusion value has failed the verification.

In the above solution, the target device can encrypt the factory reset instruction and the device identity in the received factory reset request message according to the preset algorithm and the second key to obtain the second obfuscated value. That is to say, based on the preset algorithm and the second key in the target device, the preset algorithm and the first key in the control terminal, perform security verification on the factory reset request message, and the encrypted first obfuscation value Compared with sending the first key directly, it can effectively prevent other malicious users from intercepting the corresponding key, thereby enhancing the security of the key.

In some embodiments of the present application, based on a preset rule, the first obfuscated value is verified, which can also be implemented according to the method shown in FIG. 3 :

S301 , based on a preset algorithm and a preset second key, decrypt the first obfuscated value in the factory reset request message to obtain a corresponding device identity.

After receiving the factory reset request message, the target device invokes the pre-stored preset algorithm and the preset second key. The above-mentioned first obfuscated value is decrypted through a pre-stored preset algorithm and a preset second key, thereby obtaining a corresponding device identity.

For example, if the preset algorithm is D, the second key is K ₂ , and the first obfuscated value is C ₁ , it can be obtained: (Command||ID)=D(K ₂ ,C ₁ ), where: Command is factory reset Set the instruction, ID is the device identity.

S302: Determine whether the device identity obtained after decryption is consistent with the device identity in the factory reset request message.

The target device determines the device identity in the factory reset request message, and compares it with the device identity obtained after decryption to determine whether the two are the same.

S303, if the device identity obtained after decryption is consistent with the device identity in the factory reset request message, determine that the first obfuscated value has passed the verification; the device identity obtained after decryption is the same as the factory reset request message In the case that the device IDs in are consistent, it is determined that the verification of the first obfuscated value fails.

It should be noted that the device identity in the factory reset request message is consistent with the device identity obtained after decryption, and may refer to the device identity in the factory reset request message, which is the same as the device identity obtained after decryption. Moreover, the preset algorithm mentioned here is a corresponding decryption algorithm.

In the above scheme, the target terminal decrypts the received first obfuscated value, and compares the decrypted device identity with the device identity in the factory reset request message to determine whether the two are consistent, so as to complete the identification of the first. Validation of obfuscated values.

S104, in the case that the verification of the first obfuscated value is passed, execute a factory reset instruction.

It should be noted that when the first obfuscated value is verified as passed, the target device may send prompt information to the control terminal to prompt the user corresponding to the control terminal to restore the factory settings of the target device without permission. The target device can also send alert information to a third-party subject (such as a special supervision department) to remind the third-party subject that the target device is subject to malicious factory reset instructions, which may threaten the security of the target device. The alarm information tracks the target device to ensure the security of the target device.

In order to further improve the security of the target device when restoring the factory settings, in an embodiment of the present application, the factory setting restore request message generated by the control terminal further includes a random number. In addition, the first obfuscated value is obtained by encrypting the factory reset instruction, the device identification, and the random number by the control terminal based on the preset algorithm and the preset first key.

For example, if the factory reset command is Command, the device identity is ID, the first key is K ₁ , the preset algorithm is F ₁ , and the random number is R, then the first confusion value C ₁ =F ₁ (K ₁ ,Command ||ID||R).

It should be noted that the random numbers mentioned here can be numbers, letters, or a combination of numbers and letters. The combined character string is not limited in this embodiment of the present application. The random number mentioned here may be randomly generated by the control terminal, or may be randomly set by the user of the control terminal, which is not limited in this embodiment of the present application.

With the above solution, a random number is added to the factory reset request message generated by the control terminal, and the random number is also used in the process of generating the first obfuscated value, which can effectively prevent the factory reset request message sent by the control terminal from being intercepted by a third party Afterwards, a third party implements a replay attack to gain control of the electronic device.

In the case that a random number is included in the factory reset request message, the method for the target terminal to verify the first obfuscated value is as follows:

Based on the preset algorithm and the preset second key, encrypting the factory reset instruction, device identification, and random number in the factory reset request message to obtain a second obfuscated value;

determining whether the first obfuscated value in the factory reset request message is consistent with the second obfuscated value;

In the case that the first confusion value is consistent with the second confusion value, it is determined that the verification of the first confusion value is passed;

In the case that the first obfuscated value is inconsistent with the second obfuscated value, it is determined that the verification of the first obfuscated value has failed.

In addition to the above method, in this embodiment of the present application, the first obfuscated value may also be verified by the following method:

Decrypt the first obfuscated value in the factory reset request message based on the preset algorithm and the preset second key to obtain the corresponding device identity and random number;

Determine whether the device ID obtained after decryption is consistent with the device ID in the factory reset request message; and determine whether the random number obtained after decryption is consistent with the random number in the factory reset request message;

In the case that the two are consistent, it is determined that the first obfuscated value has passed the verification.

In some embodiments of the present application, the random number may be a time stamp when the control terminal generates the factory reset request message, that is, the time stamp is used to represent the time when the control terminal generates the factory reset request message. In the method for restoring factory settings provided by the embodiment of the present application, in the case where the random number is the timestamp for the control terminal to generate the request message for restoring factory settings, before step S103, the method further includes:

determine whether the timestamp exceeds a preset threshold;

In the case that the time stamp does not exceed the preset threshold, it is determined that the factory reset request message is a valid factory reset request message.

In the above solution, the random number is set as the time stamp for the control terminal to generate the factory reset request message, and the timestamp is compared with a preset threshold, so as to determine whether the received factory reset request message is valid, and further. This can prevent a third party from gaining control of the electronic device after intercepting the factory reset request message.

It should be noted that the preset algorithm mentioned in real-time in this application may be an existing encryption algorithm, or an algorithm with a data mixing function designed by the manufacturer of the electronic device. is not limited.

In a method for restoring factory settings provided by an embodiment of the present application, the control terminal can add a first confusion value for security verification when sending a request message for restoring factory settings to a target device, and the first confusion value is based on a preset value. The algorithm and the first key are obtained by encrypting the information such as the factory reset instruction and the device identity. After receiving the factory reset request message containing the first obfuscated value, the target device can verify the first obfuscated value through a preset rule, and can execute the factory reset instruction if the verification is passed. The above solution can effectively solve the problem in the prior art that the electronic device does not need the owner's consent, and other people can restore the electronic device to factory settings, causing the electronic device to be out of the owner's control and causing loss to the owner. Moreover, the security of the electronic device can be effectively enhanced, and the user experience of the user can be improved.

Based on the same idea, some embodiments of the present application also provide a device corresponding to the above method.

FIG. 4 is a device for restoring factory settings provided by an embodiment of the present application. As shown in Figure 4, the device includes:

at least one processor; and,

a memory communicatively coupled to the at least one processor; wherein,

The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to:

The target device receives a factory reset request message from the control terminal, and the factory reset request message includes: a factory reset instruction, a device identity, and a first confusion value;

Wherein, the first obfuscated value is obtained by the control terminal encrypting the factory reset instruction and the device identity based on a preset algorithm and a preset first key;

Based on the preset rules and according to the factory reset request, verify the first obfuscated value;

In the case that the verification of the first obfuscated value is passed, the instruction of restoring the factory settings is executed.

Each embodiment in this application is described in a progressive manner, and the same and similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and reference may be made to the partial descriptions of the method embodiments for related parts.

The devices and methods provided in the embodiments of the present application are in a one-to-one correspondence. Therefore, the devices also have beneficial technical effects similar to the corresponding methods. Since the beneficial technical effects of the methods have been described in detail above, they will not be repeated here. Beneficial technical effect of equipment.

It should also be noted that the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a series of elements includes not only those elements, but also Other elements not expressly listed, or which are inherent to such a process, method, article of manufacture, or apparatus are also included. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article of manufacture, or device that includes the element.

The above descriptions are merely examples of the present application, and are not intended to limit the present application. Various modifications and variations of this application are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims (9)

1. A method for restoring factory settings, wherein the method comprises: The target device receives a factory reset request message from the control terminal, where the factory reset request message includes: a factory reset instruction, a device identity, and a first confusion value; Wherein, the first obfuscated value is obtained by the control terminal encrypting the factory reset instruction and the device identity based on a preset algorithm and a preset first key; Based on preset rules and according to the factory reset request message, verifying the first obfuscated value includes: Based on the preset algorithm and the preset second key, encrypting the factory reset instruction and the device identity in the factory reset request message to obtain a second obfuscated value; determining whether the first obfuscated value in the factory reset request message is consistent with the second obfuscated value; In the case that the first obfuscation value is consistent with the second obfuscation value, it is determined that the verification of the first obfuscation value is passed; In the case that the first obfuscated value is verified and passed, execute the restore factory settings instruction; In the case that the verification of the first obfuscated value fails, the target device sends prompt information to the control terminal to prompt the user corresponding to the control terminal or a third-party subject to send alarm information to prompt the target device A malicious said factory reset instruction was received. 2. The method according to claim 1, wherein the verification of the first obfuscated value based on a preset rule and the factory reset request message specifically comprises: Decrypt the first obfuscated value in the factory reset request message based on the preset algorithm and the preset second key to obtain a corresponding device identity; Determine whether the device identity obtained after decryption is consistent with the device identity in the factory reset request message; In the case that the device identification obtained after decryption is consistent with the device identification in the factory reset request message, it is determined that the first obfuscated value has passed the verification. 3. The method according to claim 1, wherein, before verifying the first obfuscated value based on a preset rule and according to the factory reset request message, the method further comprises: It is determined that the device identity in the factory reset request message is consistent with the identity of the target device. 4. The method according to claim 1, wherein the request message for restoring factory settings further comprises: a random number; The first obfuscation value is obtained by the control terminal encrypting the factory reset instruction, the device ID, and the random number based on a preset algorithm and a preset first key. 5. The method according to claim 4, wherein, based on a preset rule, according to the factory reset request message, verifying the first obfuscated value, specifically comprising: Based on the preset algorithm and the preset second key, encrypt the random number, the factory reset instruction and the device identity in the factory reset request message to obtain a second obfuscated value; determining whether the first obfuscated value in the factory reset request message is consistent with the second obfuscated value; In the case that the first obfuscation value is consistent with the second obfuscation value, it is determined that the verification of the first obfuscation value is passed. 6. The method according to claim 4, wherein the verification of the first obfuscated value based on a preset rule and the factory reset request message specifically comprises: Decrypt the first obfuscated value in the factory reset request message based on the preset algorithm and the preset second key to obtain the corresponding device identity and random number; Determine whether the device ID obtained after decryption is consistent with the device ID in the factory reset request message; and determine whether the random number obtained after decryption is consistent with the random number in the factory reset request message; In the case that the two are consistent, it is determined that the first obfuscated value has passed the verification. 7 . The method according to claim 4 , wherein the random number is a timestamp when the control terminal generates the factory reset request message. 8 . 8 . The method according to claim 7 , wherein, before verifying the first obfuscated value according to the factory reset request message based on a preset rule, the method further comprises: 9 . determining whether the timestamp exceeds a preset threshold; In the case that the time stamp does not exceed a preset threshold, it is determined that the factory reset request message is a valid factory reset request message. 9. A target device for restoring factory settings, wherein the target device comprises: at least one processor; and, a memory communicatively coupled to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that when the at least one processor is executed on the target device, the following operations are implemented: Receive a factory reset request message from the control terminal, where the factory reset request message includes: a factory reset instruction, a device identity, and a first confusion value; Wherein, the first obfuscated value is obtained by the control terminal encrypting the factory reset instruction and the device identity based on a preset algorithm and a preset first key; Based on preset rules and according to the factory reset request message, verifying the first obfuscated value includes: Based on the preset algorithm and the preset second key, encrypting the factory reset instruction and the device identity in the factory reset request message to obtain a second obfuscated value; determining whether the first obfuscated value in the factory reset request message is consistent with the second obfuscated value; In the case that the first obfuscation value is consistent with the second obfuscation value, it is determined that the verification of the first obfuscation value is passed; In the case that the first obfuscated value is verified and passed, execute the restore factory settings instruction; If the verification of the first obfuscated value fails, send prompt information to the control terminal to prompt the user corresponding to the control terminal or a third-party subject to send alarm information to prompt the target device to receive malicious The factory reset instruction.

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