CN107968736B - Smart home system and information encryption method, device and terminal - Google Patents

Abstract

The invention discloses a smart home system and an information encryption method, device and terminal, which belong to the technical field of computer applications. The smart home system includes: a terminal, a gateway and home equipment. The terminal and the gateway communicate through a local area network. When the terminal generates control information according to a control operation, the control information adds a timestamp sent by the gateway to the control information added to the timestamp. After encryption, it is sent to the gateway; the gateway obtains the time stamp in the control information after receiving the encrypted information sent by the terminal and decrypting the control information, and the time interval between the time stamp when receiving the encrypted information and the time stamp in the control information is less than the predetermined time interval. When the set time threshold is reached, the control information is sent to the relevant home equipment. In addition, an information encryption method, device and terminal are also provided. The above-mentioned smart home system, information encryption method, device, and terminal can ensure the communication security in the local area network, and improve the security of home equipment control through the local area network.

Description

Smart home system and information encryption method, device and terminal

technical field

The invention relates to the technical field of computer applications, in particular to a smart home system and an information encryption method, device and terminal.

Background technique

With the rapid development of smart home technology, more and more home devices have become intelligent. Terminals such as mobile phones and tablet computers, as the control terminals of smart homes, form a smart home system together with home equipment through the communication connection with the gateway, so as to realize intelligent control of home equipment.

In the smart home system, in order to avoid the control of home equipment by tools and ensure the security of communication, it is necessary to encrypt the control information. At present, when the smart home system controls the home equipment, the terminal A encrypts the control information according to the preset key and sends it to the gateway B, and then the gateway B encrypts the encrypted information with the preset key after obtaining the encrypted information. information is decrypted to obtain control information, and because other terminals do not know the preset key, even if other terminals intercept and capture the encrypted information, they cannot successfully decrypt the encrypted information and learn the real encrypted information in the encrypted information. content, so as to achieve the purpose of information encryption in the local area network.

However, when another terminal intercepts the encrypted information sent by terminal A to gateway B, after gateway B obtains the encrypted information, although it cannot know the real content of the encrypted information, it can pretend to be terminal A and send it to the gateway at other times. B sends the encrypted information, so that terminal B executes the real content of the encrypted information at the wrong time, so that the communication security in the smart home system cannot be guaranteed.

SUMMARY OF THE INVENTION

In order to solve the technical problem of poor communication security in the smart home system in the related art, the present invention provides a smart home system and an information encryption method, device, and terminal.

In a first aspect, a smart home system is provided, the smart home system includes: a terminal, a gateway and a home device, wherein:

The terminal, when generating control information according to the triggered control operation, adds the time stamp sent by the gateway to the control information, and encrypts the control information added with the time stamp and sends it to the gateway;

The gateway obtains the time stamp in the control information after receiving the encrypted information sent by the terminal and decrypting the control information, and the time stamp in the control information is between the time stamp when receiving the encrypted information and the time stamp in the control information. When the time interval is less than the preset time threshold, the control information is sent to the relevant household equipment, so that the household equipment works according to the control information.

In a second aspect, an information encryption device is provided, including:

The time stamp acquisition module is used for the terminal to acquire the time stamp sent by the gateway when the control information is generated according to the triggered control operation;

an encryption module, configured to add a time stamp to the control information, and encrypt the time stamped control information according to a preset key to obtain encrypted information;

An encrypted information sending module, configured to send the encrypted information to the gateway.

In a third aspect, an information encryption device is provided, including:

The encrypted information receiving module is used for the gateway to receive the encrypted information sent by the terminal;

a decryption module, configured to decrypt the encrypted information according to a preset key to obtain control information;

a time interval judgment module, configured to obtain the time stamp in the control information, and determine whether the time interval between the time stamp when the encrypted information is received and the time stamp in the control information is less than a preset time threshold;

The control module is configured to control the relevant household equipment according to the control information when the time interval between the time stamp when the encrypted information is received and the time stamp in the control information is less than a preset time threshold.

In a fourth aspect, an information encryption method is provided, including:

When the terminal generates control information according to the triggered control operation, it obtains the timestamp sent by the gateway;

adding a time stamp to the control information, and encrypting the time stamped control information according to a preset key to obtain encrypted information;

The encrypted information is sent to the gateway.

In a fifth aspect, an information encryption method is provided, including:

The gateway receives the encrypted information sent by the terminal;

Decrypt the encrypted information according to the preset key to obtain control information;

Obtain the time stamp in the control information, and determine whether the time interval between the time stamp when the encrypted information is received and the time stamp in the control information is less than a preset time threshold, if so, then

The control information is sent to the relevant household equipment, so that the household equipment works according to the control information.

In a sixth aspect, a terminal is provided, including:

processor; and

a memory communicatively coupled to the processor; wherein,

The memory stores readable instructions that, when executed by the processor, implement the method of the fourth aspect.

In a seventh aspect, a gateway is provided, including:

processor; and

a memory communicatively coupled to the processor; wherein,

The memory stores readable instructions that, when executed by the processor, implement the method of the fifth aspect.

In an eighth aspect, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed, implements the method of the fourth or fifth aspect.

The following beneficial effects can be obtained through the technical solutions provided by the embodiments of the present invention:

When the smart home system controls the home equipment, the terminal generates control information according to the triggered control operation, adds the timestamp sent by the gateway to the control information, and encrypts the timestamped control information and sends it to the gateway, and the gateway receives the timestamp. After the encrypted information sent by the terminal is decrypted to obtain the control information, the time stamp in the control information is obtained. When the time interval between the time stamp when the encrypted information is received and the time stamp in the control information is less than the preset time threshold, the control information Send it to the relevant home equipment, so that the home equipment can work according to the control information, so as to judge the authenticity of the information according to the time stamp, so as to avoid the gateway from wrongly interpreting the encrypted information containing other time stamps sent by other terminals by pretending to be sent. The related equipment is controlled, thereby ensuring the communication security in the smart home system, and greatly improving the security of controlling the related home equipment.

It is to be understood that both the foregoing general description and the following detailed description are exemplary only and are not limiting of the invention.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention.

FIG. 1 is a schematic diagram of an implementation environment involved in accordance with the present disclosure.

FIG. 2 is a block diagram of a terminal 100 according to an exemplary embodiment.

Fig. 3 is a structural block diagram of a smart home system according to an exemplary embodiment.

FIG. 4 is a structural block diagram of another smart home system according to the embodiment corresponding to FIG. 3 .

Fig. 5 is a flowchart of an information encryption method according to an exemplary embodiment.

FIG. 6 is a flowchart of a specific implementation of step S110 in the information encryption method shown in the embodiment corresponding to FIG. 5 .

FIG. 7 is another specific implementation flowchart of step S110 in the information encryption method shown in the corresponding embodiment of FIG. 5 .

Fig. 8 is a flowchart of another information encryption method according to an exemplary embodiment.

Fig. 9 is a schematic diagram of a method for controlling a home device in a smart home system according to an exemplary embodiment.

Fig. 10 is a block diagram of an information encryption apparatus according to an exemplary embodiment.

FIG. 11 is a block diagram of the broadcast acquisition module 110 in the information encryption apparatus according to the corresponding exemplary embodiment shown in FIG. 10 .

FIG. 12 is another block diagram of the broadcast obtaining module 110 in the information encryption apparatus according to the corresponding exemplary embodiment shown in FIG. 10 .

Fig. 13 is a block diagram of another information encryption apparatus according to an exemplary embodiment.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with some aspects of the invention as recited in the appended claims.

FIG. 1 is a schematic diagram of an implementation environment involved in accordance with the present disclosure. The implementation environment includes: a terminal, a gateway 200 and a router 300 for data transmission between the terminal 100 and the gateway 200 .

After the terminal 100 sends the encrypted information to the gateway 200 through the router 300, the gateway 200 decrypts the encrypted information in the preset decryption method to obtain the control information, and calculates the time interval between the time stamp when the encrypted information is received and the time stamp in the control information. , and when the time interval is less than the preset time threshold, control the related equipment according to the control information.

The terminal 100 may be a computer device such as a mobile phone and a computer, and the specific implementation manner is not limited by this embodiment.

FIG. 2 is a block diagram of a terminal 100 according to an exemplary embodiment.

2 , the terminal 100 may include one or more of the following components: a processing component 101 , a memory 102 , a power supply component 103 , a multimedia component 104 , an audio component 105 , a sensor component 107 , and a communication component 108 . The above components are not all necessary, and the terminal 100 may add other components or reduce some components according to its own functional requirements, which is not limited in this embodiment.

The processing component 101 generally controls the overall operation of the terminal 100, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations, and the like. The processing component 101 may include one or more processors 109 to execute instructions to perform all or some of the steps of the operations described above. Additionally, processing component 101 may include one or more modules to facilitate interaction between processing component 101 and other components. For example, processing component 101 may include a multimedia module to facilitate interaction between multimedia component 104 and processing component 101 .

The memory 102 is configured to store various types of data to support operations at the terminal 100 . Examples of such data include instructions for any application or method operating on the terminal 100 . The memory 102 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as SRAM (Static Random Access Memory, static random access memory), EEPROM (Electrically Erasable Programmable Read-Only Memory, electrically erasable memory) Except Programmable Read Only Memory), EPROM (Erasable Programmable Read Only Memory, Erasable Programmable Read Only Memory), PROM (Programmable Read-Only Memory, Programmable Read Only Memory), ROM (Read-Only Memory, Read Only Memory) ), magnetic memory, flash memory, magnetic disk or optical disk. Also stored in the memory 102 are one or more modules configured to be executed by the one or more processors 109 to complete any of FIGS. 2 , 3 , 4 , 5 and 6 All or part of the steps in the method shown.

Power supply assembly 103 provides power to various components of terminal 100 . Power supply components 103 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to terminal 100 .

The multimedia component 104 includes a screen that provides an output interface between the terminal 100 and the user. In some embodiments, the screen may include LCD (Liquid Crystal Display, liquid crystal display) and TP (TouchPanel, touch panel). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, swipe, and gestures on the touch panel. The touch sensor may not only sense the boundaries of a touch or swipe action, but also detect the duration and pressure associated with the touch or swipe action.

Audio component 105 is configured to output and/or input audio signals. For example, the audio component 105 includes a microphone that is configured to receive external audio signals when the terminal 100 is in an operating mode, such as a calling mode, a recording mode, and a voice recognition mode. The received audio signal may be further stored in memory 102 or transmitted via communication component 108 . In some embodiments, the audio component 105 also includes a speaker for outputting audio signals.

Sensor assembly 107 includes one or more sensors for providing terminal 100 with various aspects of status assessment. For example, the sensor assembly 107 can detect the open/closed state of the terminal 100, the relative positioning of the components, the sensor assembly 107 can also detect the coordinate change of the terminal 100 or a component of the terminal 100 and the temperature change of the terminal 100. In some embodiments, the sensor assembly 107 may also include a magnetic sensor, a pressure sensor or a temperature sensor.

Communication component 108 is configured to facilitate wired or wireless communication between terminal 100 and other devices. The terminal 100 can access a wireless network based on a communication standard, such as WiFi (WIreless-Fidelity, wireless network), 2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 108 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 108 further includes an NFC (Near Field Communication, near field communication) module to facilitate short-range communication. For example, the NFC module can be based on RFID (Radio Frequency Identification, radio frequency identification) technology, IrDA (Infrared Data Association, Infrared Data Association) technology, UWB (Ultra-Wideband, ultra-wideband) technology, BT (Bluetooth, Bluetooth) technology and other technologies to fulfill.

In an exemplary embodiment, the terminal 100 may be configured by one or more ASIC (Application Specific Integrated Circuit, application specific integrated circuit), DSP (Digital Signal Processing, digital signal processor), PLD (Programmable Logic Device, programmable logic device) , FPGA (Field-Programmable Gate Array, Field Programmable Gate Array), controller, microcontroller, microprocessor or other electronic components to implement, for executing the above method.

The specific manner in which the processor in the server in this embodiment performs operations will be described in detail in the embodiment of the information encryption method, and will not be described in detail here.

FIG. 3 is a structural block diagram of a smart home system according to an exemplary embodiment. As shown in FIG. 3 , the smart home system includes: a terminal 100, a gateway 200 and a home device 300, wherein:

When the terminal 100 generates control information according to the triggered control operation, the control information is added to the time stamp sent by the gateway, and the control information added with the time stamp is encrypted and sent to the gateway;

The gateway 200 obtains the time stamp in the control information after receiving the encrypted information sent by the terminal 100 and decrypting the control information, and the time interval between the time stamp when receiving the encrypted information and the time stamp in the control information is less than a preset time threshold When the control information is sent to the relevant home equipment 500, so that the home equipment 500 works according to the control information, so as to judge the authenticity of the information according to the time stamp, so as to prevent the gateway from receiving other terminals by pretending to send messages containing other time stamps. When the information is encrypted, the related equipment is erroneously controlled, thereby ensuring the communication security in the smart home system and greatly improving the security of controlling the related home equipment.

The home device 300 may be home appliances such as smart refrigerators and smart air conditioners, and may also be smart home devices such as smart wall switches, air conditioner companions, and smart cameras, and the specific implementation is not limited by this embodiment.

The terminal 100 and the gateway 200 can be communicated and connected through a local area network such as ZIGBEE and Bluetooth, or through an external network such as WIFI and 2G/3G/4G/5G.

When the communication connection between the terminal 100 and the gateway 200 is carried out through the local area network, even if the terminal 100 cannot connect to the external network, the control of the home equipment in the smart home system can be realized, and the communication connection is not limited by the quality of the external network. The convenience of a smart home system.

Optionally, FIG. 4 is a structural block diagram of another smart home system according to the embodiment corresponding to FIG. 3 . As shown in FIG. 4 , the smart home system further includes a cloud server 400 , and the cloud server 400 communicates with the terminal 100 and the gateway. When the 200 is in communication connection, key information is sent to the terminal 100 and the gateway 200 respectively, and the terminal 100 and the gateway 200 respectively encrypt or decrypt the information according to the key in the key information received by the terminal 100 and the gateway 200 respectively.

Fig. 5 is a flowchart of an information encryption method according to an exemplary embodiment. As shown in Fig. 5 , the information encryption method may include the following steps.

In step S110, when the terminal generates control information according to the triggered control operation, the terminal acquires the timestamp sent by the gateway.

Control information is information for controlling related devices in the local area network.

As shown in the schematic diagram of the implementation environment shown in FIG. 1 , the user generates corresponding control information by manipulating the APP running in the terminal.

There are many ways to obtain the timestamp sent by the gateway. You can set the gateway to send the timestamp to the terminal at a fixed frequency, or you can receive the timestamp returned by the gateway when the terminal sends a timestamp acquisition request to the gateway. The timestamp sent by the gateway can be obtained by other methods.

Timestamps are timestamps made by the gateway on a time metric.

Optionally, the time stamp may be the time stamp performed on the system time of the gateway, the time stamp performed on the timer, or the time stamp performed in other forms.

In step S120, a time stamp is added to the control information, and the time stamped control information is encrypted according to a preset key to obtain encrypted information.

The key is a preset parameter for encrypting or decrypting control information.

It should be noted that between the keys sent by the cloud server to the terminal and the gateway respectively, the two keys may be the same or corresponding, that is, after the terminal encrypts the information according to the key received, the The gateway can successfully decrypt the information according to the key it receives. That is to say, information encryption and information decryption can be performed through the same key; information encryption can also be performed through one key, and information decryption can be performed through another key corresponding to the encrypted key, so as to ensure that the gateway is receiving After the encrypted information is reached, it can be successfully decrypted.

There are many ways to encrypt the control information, for example, the RSA algorithm, the AES algorithm, etc., and the specific way of encrypting the control information is not limited here.

In step S130, the encrypted information is sent to the gateway.

Using the above method, when the terminal generates the control information according to the triggered control operation, the terminal obtains the timestamp sent by the gateway, adds the timestamp to the control information, and then adds the timestamped control information according to the preset key pair. Encrypt, and then send the encrypted information to the gateway, so that when the gateway decrypts the encrypted information to obtain the control information, it judges the authenticity of the information according to the time stamp, thus ensuring the communication security in the smart home system and greatly improving the related home furnishing system. The security of the device being controlled.

Optionally, FIG. 6 is a detailed description of step S110 in the information encryption method shown in the corresponding embodiment of FIG. 5 . As shown in FIG. 6 , step S110 in the information encryption method may further include the following steps.

In step S111, the terminal receives the timestamps sent by the gateway at preset time intervals.

The time interval at which the gateway sends the timestamp is a preset time range value. The time interval cannot be set too large or too small. In the actual smart home system, the time interval can be fine-tuned in advance. In an exemplary embodiment, the time interval is preset to 5 seconds.

When the terminal receives the timestamp sent by the gateway at a preset time interval, it does not obtain the timestamp immediately, but only when the control information is generated according to the triggered control operation, obtains the timestamp it receives and stores it. added to the control information.

In step S112, the time stamp received when the control information is generated is acquired from the time stamp sent by the gateway.

Using the above method, the gateway sends time stamps to the terminal according to the preset time interval, so that when the terminal generates control information, it can directly search for the latest time stamp received in the time stamps sent by the gateway, so there is no need to send time stamps to the gateway. Specifically asking for timestamps greatly improves the convenience of obtaining timestamps.

Optionally, FIG. 7 is another detailed description of step S110 in the information encryption method shown in the corresponding embodiment of FIG. 5 . As shown in FIG. 7 , step S110 in the information encryption method may further include the following steps.

In step S114, when generating the control information, the terminal sends a timestamp acquisition request to the gateway.

As mentioned earlier, a timestamp is a time stamp on a measure of time.

In order to ensure the accuracy of the time stamp and enable the gateway to judge the authenticity of the information according to the time stamp after receiving the information, the gateway should know the time stamp added by the terminal to the control information. Therefore, when the terminal will send the control information to the gateway, by sending a timestamp acquisition request to the gateway, the gateway is requested to send the timestamp, so as to ensure that the timestamp is a timestamp known by the gateway.

In the local area network, the terminal sends a timestamp acquisition request to the gateway through the router.

In step S115, the timestamp returned by the gateway in response to the request is received.

When receiving the timestamp obtaining request sent by the terminal, the gateway immediately sends the timestamp to the terminal.

Using the above method, when the terminal generates control information, it sends a timestamp acquisition request to the gateway to request the gateway to send the timestamp, and the gateway does not need to send the timestamp to the terminal frequently through the router, thereby avoiding waste of resources.

Fig. 8 is a flowchart of another information encryption method according to an exemplary embodiment. As shown in Fig. 8 , the information encryption method may include the following steps.

In step S210, the gateway receives the encrypted information sent by the terminal.

The encrypted information that the gateway receives from the terminal is the encrypted information sent by the terminal to the gateway through the local area network.

In step S220, the encrypted information is decrypted according to a preset key to obtain control information.

As mentioned above, the keys stored in the gateway and the terminal are the same or correspond to each other.

After the terminal encrypts a piece of information according to its stored key and sends it to the gateway, the gateway can successfully decrypt it according to its stored key after receiving it.

For example, the key stored in the terminal is the key X1, the key stored in the gateway is the key X2, and the key X2 and the key X2 are the same or corresponding. When the information Y2 is obtained, the encrypted information Y2 can be successfully decrypted through the key X2 to obtain the information Y1.

In step S230, the time stamp in the control information is obtained, and it is determined whether the time interval between the time stamp when the encrypted information is received and the time stamp in the control information is less than a preset time threshold, and if yes (Y), execute Step S241; if no (N), execute step S242.

As mentioned above, the terminal encrypts the time stamped control information.

Therefore, after decrypting the encrypted information, the obtained control information also includes a time stamp.

As mentioned earlier, a timestamp is a time stamp on a time measure. Therefore, the time stamps at different times are different, and the time information described by the time stamps changes with the passage of time.

For example, the time stamp is a time stamp on the system time of the gateway. When the terminal generates control information according to the triggered control operation, it obtains the time stamp T1 sent by the gateway as 12:00:00 of the system time of the gateway, and when receiving encrypted information The timestamp T2 is the system time 12:00:03 of the gateway when the encrypted information is received.

For another example, the time stamp is a time stamp on the timer in the gateway. When the terminal generates control information according to the triggered control operation, the time stamp T1 sent by the gateway is obtained as the time 30:00:10 of the timer in the gateway, and The time stamp T2 when the encrypted information is received is 30:00:13 of the timer in the gateway when the encrypted information is received.

The time threshold is a preset time range value. The time threshold cannot be set too large or too small. The time threshold can be fine-tuned through data transmission in the actual local area network. In an exemplary embodiment, the time threshold is preset to 5 seconds.

If the time interval between the time stamp when the encrypted information is received and the time stamp in the control information is less than the preset time threshold, it indicates that the control information is valid, and it is not that other terminals in the local area network are attacked by impersonation. Therefore, the related equipment is controlled according to the control information. Because if the control information is valid, the terminal encrypts the control information and the gateway receives the encrypted information almost instantaneously, that is, the time interval between the terminal encrypts the control information and the gateway receives the encrypted information is usually very small.

If the time interval between the time stamp when receiving the encrypted information and the time stamp in the control information is not less than the preset time threshold, it indicates the time between when the terminal encrypts the control information and when the gateway receives the encrypted information sent by the terminal. If the interval is large, it is likely that other terminals in the local area network attack by impersonating. Therefore, the control information is discarded and corresponding operations are not performed according to the control information.

In step S241, the control information is sent to the relevant household equipment, so that the household equipment works according to the control information.

In step S242, the control information is discarded.

Using the above method, when the gateway obtains the time stamp in the control information after decrypting the encrypted information, only when the time interval between the time stamp when receiving the encrypted information and the time stamp in the control information is less than the preset time threshold , the control information is sent to the relevant home equipment, and the home equipment performs the corresponding operations to prevent other terminals from attacking the gateway by impersonating, thereby ensuring the communication security in the smart home system and greatly improving the related home equipment. Control security.

Fig. 9 is a schematic diagram of a method for controlling a home device in a smart home system according to an exemplary embodiment.

In step S310, the terminal and the gateway respectively receive the key information sent by the cloud server through the communication connection with the cloud server, and the key information includes a preset key.

It can be understood that the key when the terminal and the gateway perform information encryption or information decryption is pre-stored in their respective storages in the form of key information, and then the terminal obtains the key in the stored key information and stores it. The control information is encrypted according to the key, and after receiving the encrypted information, the gateway obtains the key in the key information stored in the gateway, and decrypts the encrypted information according to the key.

When the terminal and gateway communicate with the cloud server for the first time, the cloud server sends the key information containing the key to the terminal and the gateway respectively, and the key information received by the terminal and the gateway is the same, so as to ensure that the terminal is in control of the control After the encrypted information is sent to the gateway, the gateway can decrypt it smoothly.

In step S320, when the terminal generates control information according to the triggered control operation, the time stamp sent by the gateway is added to the control information.

In step S330, the terminal encrypts the time stamped control information according to a preset key, and sends the obtained encrypted information to the gateway.

In step S340, the gateway receives the encrypted information sent by the terminal, and decrypts the encrypted information according to the agreed encryption and decryption method to obtain control information.

In step S350, the gateway obtains the time stamp in the control information, and determines whether the time interval between the time stamp when the encrypted information is received and the time stamp in the control information is less than a preset time threshold, and if so, executes step S361 ; if no, execute step S362.

In step S361, the gateway controls related devices according to the control information.

In step S362, the gateway discards the control information.

The following are system embodiments of the present invention, which can be used to execute the above information encryption method embodiments. For details not disclosed in the system embodiments of the present invention, please refer to the information encryption method embodiments of the present invention.

FIG. 10 is a block diagram of an information encryption apparatus according to an exemplary embodiment. The apparatus includes a timestamp obtaining module 110 , an encryption module 120 and an encrypted information sending module 130 running in an application program of a terminal.

The time stamp obtaining module 110 is used for obtaining the time stamp sent by the gateway when the terminal generates control information according to the triggered control operation;

An encryption module 120, configured to add a time stamp to the control information, and encrypt the time stamped control information according to a preset key to obtain encrypted information;

The encrypted information sending module 130 is used for sending encrypted information to the gateway.

For details of the implementation process of the functions and functions of each module in the above-mentioned device, please refer to the implementation process of the corresponding steps in the above-mentioned information encryption method, which will not be repeated here.

Optionally, as shown in FIG. 11 , the timestamp obtaining module 110 further includes but is not limited to: a timestamp receiving unit 111 and a first timestamp obtaining unit 112 .

The timestamp receiving unit 111 is used for the terminal to receive timestamps sent by the gateway according to preset time intervals;

The first time stamp obtaining unit 112 is configured to obtain, from the time stamps sent by the gateway, the time stamps received when the control information is generated.

Optionally, as shown in FIG. 12 , the timestamp obtaining module 110 further includes but is not limited to: a timestamp obtaining unit 114 and a second timestamp obtaining unit 115 .

a timestamp acquisition request unit 114, configured to send a timestamp acquisition request to the gateway when the terminal generates control information;

The second timestamp obtaining unit 115 is configured to obtain the timestamp sent by the gateway in response to the timestamp obtaining request.

Fig. 13 is a block diagram of another information encryption apparatus according to an exemplary embodiment, the apparatus includes an encrypted information receiving module 210, a decryption module 220, a time interval judgment module 230 and a control module 240 running in an application program of the gateway .

The encrypted information receiving module 210 is used for the gateway to receive the encrypted information sent by the terminal;

a decryption module 220, configured to decrypt the encrypted information according to a preset key to obtain control information;

The time interval judgment module 230 is used for obtaining the time stamp in the control information, and judging whether the time interval between the time stamp when the encrypted information is received and the time stamp in the control information is less than a preset time threshold;

The control information sending module 240 is used to send the control information to the relevant home equipment when the time interval between the time stamp when receiving the encrypted information and the time stamp in the control information is less than the preset time threshold, so that the home equipment Work according to control information.

Optionally, the information encryption apparatus shown in FIG. 13 further includes but is not limited to: a control information discarding module.

The control information discarding module is configured to discard the control information when the time interval between the time stamp when the encrypted information is received and the time stamp in the control information is not less than a preset time threshold.

Optionally, the present invention further provides a terminal that performs all or part of the steps of the information encryption method shown in any one of FIG. 5 , FIG. 6 and FIG. 7 . The terminal includes:

processor; and

a memory communicatively coupled to the processor; wherein,

The memory stores readable instructions that, when executed by the processor, implement the method as described in any of the above-described exemplary embodiments.

The specific manner in which the processor in the terminal in this embodiment performs the operation has been described in detail in the embodiment related to the information encryption method, and will not be described in detail here.

Optionally, the present invention also provides a gateway that performs all or part of the steps of the information encryption method shown in FIG. 8 . The gateway includes:

processor; and

a memory communicatively coupled to the processor; wherein,

The memory stores readable instructions that, when executed by the processor, implement the method as described in any of the above-described exemplary embodiments.

The specific manner in which the processor in the gateway in this embodiment performs operations has been described in detail in the embodiment of the information encryption method, and will not be described in detail here.

In an exemplary embodiment, there is also provided a storage medium, which is a computer-readable storage medium, for example, may be a transitory and non-transitory computer-readable storage medium including instructions. The storage medium includes, for example, a memory 102 of instructions, and the above-mentioned instructions can be executed by the processor 109 of the terminal 100 to implement the above-mentioned information encryption method.

It should be understood that the present invention is not limited to the precise structures described above and illustrated in the accompanying drawings, and that various modifications and changes may be made by those skilled in the art without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims (13)

1. a smart home system, is characterized in that, described smart home system comprises: terminal, gateway and home equipment, wherein: The terminal, when generating control information according to the triggered control operation, adds the time stamp last sent by the gateway to the control information, and encrypts the control information added with the time stamp and sends it to the terminal. gateway; The gateway obtains the time stamp in the control information after receiving the encrypted information sent by the terminal and decrypting the control information, and the time stamp in the control information is between the time stamp when receiving the encrypted information and the time stamp in the control information. When the time interval is less than the preset time threshold, the control information is sent to the relevant household equipment, so that the household equipment works according to the control information; The gateway sends the time stamp to the terminal according to a preset time interval, and the terminal obtains the time stamp sent by the gateway only when the control information is generated according to the triggered control operation. The timestamp is added to the control information. 2 . The smart home system according to claim 1 , wherein the terminal and the gateway are connected through a local area network for communication. 3 . 3. The smart home system according to claim 1, wherein the smart home system further comprises a cloud server, and when the cloud server is connected to the terminal and the gateway, the The gateway sends the key information respectively, and the terminal and the gateway respectively encrypt or decrypt the information according to the key in the key information that they receive respectively. 4. an information encryption method, it is characterised in that the method comprises: When the terminal generates control information according to the triggered control operation, the terminal obtains the last time stamp sent by the gateway; adding a time stamp to the control information, and encrypting the time stamped control information according to a preset key to obtain encrypted information; Send the encrypted information to the gateway, so that the gateway decrypts the encrypted information to obtain the time stamp contained in the control information, and the time stamp when receiving the encrypted information is the same as the time stamp in the control information. When the time interval between the time stamps is less than the preset time threshold, the control information is sent to the relevant household equipment; The gateway sends the time stamp to the terminal according to a preset time interval, and the terminal obtains the time stamp sent by the gateway only when the control information is generated according to the triggered control operation. The timestamp is added to the control information. 5. The method according to claim 4, wherein, when the terminal generates control information according to the triggered control operation, the step of acquiring the timestamp last sent by the gateway comprises: The terminal receives the timestamp sent by the gateway according to the preset time interval; The time stamp received when the control information is generated is obtained from the time stamp sent by the gateway. 6. an information encryption method, it is characterised in that the method comprises: The gateway receives the encrypted information sent by the terminal; Decrypt the encrypted information according to the preset key to obtain control information; Obtain the time stamp in the control information, and determine whether the time interval between the time stamp when the encrypted information is received and the time stamp in the control information is less than a preset time threshold, if so, then sending the control information to the relevant household equipment, so that the household equipment works according to the control information; Wherein, the timestamp in the control information is the latest timestamp sent by the gateway obtained when the terminal generates the control information according to the triggered control operation, and the gateway sends the timestamp to the terminal according to a preset time interval If the time stamp is used, the terminal obtains the time stamp sent by the gateway only when the control information is generated according to the triggered control operation, and adds the obtained time stamp to the control information. 7. The method according to claim 6, wherein the method further comprises: If the time interval between the time stamp when the encrypted information is received and the time stamp in the control information is not less than the preset time threshold, the control information is discarded. 8. An information encryption device, characterized in that the device comprises a timestamp acquisition module, an encryption module and an encrypted information transmission module running in an application program of a terminal, wherein: The timestamp acquisition module is used for the terminal to acquire the latest timestamp sent by the gateway when the control information is generated according to the triggered control operation; an encryption module, configured to add a time stamp to the control information, and encrypt the time stamped control information according to a preset key to obtain encrypted information; An encrypted information sending module, configured to send the encrypted information to the gateway, so that the gateway decrypts the encrypted information to obtain the time stamp contained in the control information, and the time when the encrypted information is received When the time interval between the stamp and the time stamp in the control information is less than a preset time threshold, send the control information to the relevant household equipment; The gateway sends the time stamp to the terminal according to a preset time interval, and the terminal obtains the time stamp sent by the gateway only when the control information is generated according to the triggered control operation. The timestamp is added to the control information. 9. The apparatus according to claim 8, wherein the time stamp obtaining module comprises a time stamp receiving unit and a first time stamp obtaining unit, wherein: a timestamp receiving unit, used for the terminal to receive timestamps sent by the gateway according to preset time intervals; A first time stamp obtaining unit, configured to obtain the time stamp received when the control information is generated from the time stamp sent by the gateway. 10. An information encryption device, characterized in that the device comprises an encrypted information receiving module, a decryption module, a time interval judgment module and a control module running in an application program of a gateway, wherein: The encrypted information receiving module is used for the gateway to receive the encrypted information sent by the terminal; a decryption module, configured to decrypt the encrypted information according to a preset key to obtain control information; a time interval judgment module, configured to obtain the time stamp in the control information, and determine whether the time interval between the time stamp when the encrypted information is received and the time stamp in the control information is less than a preset time threshold; A control information sending module, configured to send the control information to the relevant household equipment when the time interval between the time stamp when receiving the encrypted information and the time stamp in the control information is less than a preset time threshold , so that the household device works according to the control information; Wherein, the timestamp in the control information is the latest timestamp sent by the gateway obtained when the terminal generates the control information according to the triggered control operation, and the gateway sends the timestamp to the terminal according to a preset time interval If the time stamp is used, the terminal obtains the time stamp sent by the gateway only when the control information is generated according to the triggered control operation, and adds the obtained time stamp to the control information. 11. A terminal, wherein the terminal comprises: processor; and a memory communicatively coupled to the processor; wherein, The memory stores readable instructions that, when executed by the processor, implement the method of any one of claims 4-5. 12. A gateway, wherein the gateway comprises: processor; and a memory communicatively coupled to the processor; wherein, The memory stores readable instructions that, when executed by the processor, implement the method of any one of claims 6-7. 13. A computer-readable storage medium on which a computer program is stored, wherein the computer program, when executed, implements the method according to any one of claims 4-7.

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