WO2021091132A1

WO2021091132A1 - Nfc-based screen-lock remote control method for pc without nfc function, and system therefor

Info

Publication number: WO2021091132A1
Application number: PCT/KR2020/014590
Authority: WO
Inventors: 이윤상; 김안태
Original assignee: 주식회사 마이폰키; 이윤상; 김안태
Priority date: 2019-11-06
Filing date: 2020-10-23
Publication date: 2021-05-14
Also published as: KR102115830B1

Abstract

Disclosed is a system for executing screen lock software by remotely controlling a PC without an NFC function on the basis of NFC. The system according to one embodiment of the present invention comprises: a mouse pad including an NFC function module for storing unique NFC information, and transmitting the NFC information to an NFC smartphone, when the NFC smartphone approaches to be within a predetermined distance so as to activate an NFC function; the NFC smartphone, which performs security procedures on the basis of the NFC information received from the mouse pad having the NFC function, and generates a secure control command so as to transmit the secure control command to a server together with the NFC information and a signature generated on the basis of the NFC information; the server for verifying the received secure control command through the NFC information and the signature generated on the basis of the NFC information, which are received from the NFC smartphone, and transmitting the secure control command to a registered PC without the NFC function; and the PC for performing a screen lock function by executing the screen lock software according to the secure control command received from the server.

Description

NFC-based screen lock remote control method and system for a PC that does not include an NFC function

The present invention relates to a remote control method and system for using a mouse pad as a medium containing NFC information. Specifically, the present invention performs NFC-based authentication using a mouse pad even in a PC that does not include an NFC function and thus does not recognize a medium containing the NFC function, and remotely controls the screen lock to the PC through the authenticated NFC smartphone. It relates to a method and system capable of performing.

NFC (Near Field Communication) is one of the mobile RFID technologies and is a global standard technology that enables low-power communication over a close range. NFC exchanges data at a data rate of 10kbps to 424kbps in the radio frequency 13.56MHz range, and is generally used as a tag function, reader function, or P2P mode.

However, in order to utilize this NFC technology for security, in the past, the device to be secured must have an NFC hardware module, and if there is no NFC hardware module, a module is separately developed and added, and firmware and application software are developed for this. There was a problem to be applied.

In the case of developing a separate NFC hardware module, there is a problem that it takes a lot of development period and cost for hardware development and application, and various issues such as hardware mechanism change and product cost increase are likely to occur.

Therefore, hereinafter, a system capable of providing a security function based on NFC technology even in a PC device that does not include an NFC function will be described.

An object of the present invention is to propose a system capable of driving NFC-based screen locking software even for a PC device that does not include an NFC function.

A system for operating a screen lock software by remotely controlling a PC that does not include an NFC function based on NFC is disclosed. The system according to an embodiment of the present invention includes an NFC function module that stores unique NFC information and transmits NFC information to the NFC smartphone when the NFC smartphone approaches within a certain distance and the NFC function is activated. Performs a security procedure based on the NFC information transmitted from the mouse pad and the mouse pad including the NFC function, generates a secure control command, and transmits the NFC information and the signature generated based on the NFC information to the server The NFC smart phone that, through the NFC information received from the NFC smart phone and a signature generated based on the NFC information, verify the transmitted secured control command, and transmit the secured control command to a registered NFC-free PC And a PC that performs a screen lock function by operating a screen lock software in accordance with a transmitting server and a secure control command transmitted from the server.

In the remote control system according to an embodiment of the present invention, a PC that does not have an NFC function can be controlled through a control command to which NFC-based security is applied.

In particular, a command to lock and release the screen by operating the screen lock software installed on the PC can be performed through an NFC-based security command.

Since the remote screen lock control system according to an embodiment of the present invention can be remotely controlled only through an NFC smartphone that is authenticated through the NFC function, due to the nature of the NFC technology, a mouse pad including an NFC function and an NFC smartphone can be directly controlled. Control is possible only when contact is made, so security can be improved.

In addition, the remote control system according to an embodiment of the present invention may improve security through an additional verification operation in the server.

FIG. 1 is a conceptual diagram illustrating a system for remotely controlling a device that does not include an NFC function (hereinafter,'PC 400 without an NFC function') with a secure device through NFC-based authentication.

2 is a block diagram illustrating an NFC smart phone according to an embodiment of the present invention.

3 shows a mouse pad including an NFC function according to an embodiment of the present invention.

4 shows a PC without an NFC function according to an embodiment of the present invention.

5 is a flowchart illustrating a first use procedure according to an embodiment of the present invention.

6 shows a method of verifying the copy of NFC authentication information according to an embodiment of the present invention.

7 shows a procedure for registering a mouse pad including an NFC function according to an embodiment of the present invention.

8 shows a procedure for transmitting a secure control command to a PC without an NFC function according to an embodiment of the present invention.

9 shows a procedure for performing a screen lock/release of a PC without an NFC function through an NFC smartphone in the above-described system.

Since the embodiments according to the present invention can be modified in various ways and have various forms, the embodiments will be illustrated in the drawings and will be described in detail in the present specification. However, this is not intended to limit the embodiments according to the present invention to specific disclosed forms, and includes all changes, equivalents, or substitutes included in the spirit and scope of the present invention.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it is directly connected to or may be connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle. Other expressions describing the relationship between components, such as "between" and "directly between" or "adjacent to" and "directly adjacent to" should be interpreted as well.

The terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described herein, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility of the presence or addition.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be construed as having a meaning consistent with the meaning of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in the present specification. Does not. “And/or” includes each and every combination of one or more of the recited items.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram showing a system for remotely controlling a device that does not include an NFC function (hereinafter, referred to as a'PC without an NFC function) with a secure device through NFC-based authentication.

As shown in Fig. 1, the NFC-based remote control system according to a specific embodiment of the present invention is a mouse pad 200 including an NFC function, an NFC smartphone 100, a server 300 and no NFC function. Includes a personal computer (PC) 400.

The NFC smart phone 100 is a device including an NFC module, and may mean an electronic device such as a smart phone or a tablet. The NFC smartphone 100 receives NFC ID information or signature information from the mouse pad 200 including the NFC function and uses it for authentication. NFC smartphone 100 may be installed and executed an application for NFC-based remote control. An application for NFC-based remote control may include a cryptographic algorithm for authentication. The NFC smartphone 100 may perform a security procedure in connection with a mouse pad and generate a secure control command accordingly. The secured control command may be transmitted to the PC 400 without the NFC function through the server 300. The specific configuration of the NFC smartphone 100 will be described in detail with reference to FIG. 2 below.

The mouse pad 200 including the NFC function is a medium including the NFC function, and when the NFC smartphone 100 approaches within a certain distance, it receives low-power energy from the NFC smartphone 100 and temporarily operates and stores it. It transmits the NFC ID information and signature information being done to the NFC smartphone 100. The NFC ID information and signature information stored by the mouse pad 200 including the NFC function is unique, cannot be generated without encryption key information, and information can be given only through direct contact. It can perform security functions in conjunction.

Meanwhile, the mouse pad 200 including the NFC function may be replaced with another medium such as a card including the NFC function.

Accordingly, the mouse pad 200 including the NFC function includes a module capable of performing the NFC function inside while having the appearance of a general mouse pad. Here, the mouse pad 200 may be manufactured to have a thickness sufficient to perform short-range wireless communication including NFC.

The server 300 connects the NFC smartphone 100 and the PC 400 without the NFC function by wire or wirelessly. The server 300 may include a storage device and a computing device, and can be accessed only with a previously registered NFC smartphone. In particular, the server 300 according to an embodiment of the present invention has closed all access paths other than access from an NFC smartphone, unlike a general server, does not store user personal information, etc., and performs a remote control function at a minimum. I am building only the database of.

The PC 400 without the NFC function is literally a PC (Personal Computer) that does not include an NFC function or an NFC module. The PC 400 without the NFC function receives the authenticated state change information transmitted from the NFC smartphone 100 through communication with the server 300, and performs an appropriate function based on the received state change information. Specifically, the PC 400 without the NFC function may be installed with associated software for operating the PC according to a control command from the NFC smartphone 100.

Meanwhile, the PC 400 without the NFC function may include various types of PCs including a desktop PC, a laptop, or a notebook.

According to an embodiment, when the mouse pad 200 including the NFC function is disposed at a close distance of the NFC smart phone 100, short-range communication between the NFC smart phone 100 and the mouse pad 200 including the NFC function is performed. Done. For example, the NFC smartphone 100 performs short-range communication with a mouse pad 200 including an NFC function located within a predetermined area. By arranging in the communication area, communication between the NFC smartphone 100 and the mouse pad 200 including the NFC function can be achieved.

Hereinafter, a close distance arrangement between the NFC smartphone 100 and the mouse pad 200 including the NFC function, specifically direct contact or being located within a predetermined distance between each other will be referred to as “touch”.

As shown in Fig. 2, the NFC smartphone 100 according to an embodiment of the present invention includes a communication unit 110, an A/V input unit 120, a user input unit 130, a memory 140, an output unit ( 150), a power supply unit 160 and a control unit 170 may be included. Meanwhile, since the components shown in FIG. 2 are not essential, an NFC smartphone having more components or fewer components may be implemented.

Hereinafter, the above components will be described in order.

The communication unit 110 may include at least one or more modules that enable communication with the server 300 described in FIG. 1, and the like. For example, the communication unit 110 may include at least one of an Internet module 111, a short-range communication module 112, and a location information module 113.

The Internet module 111 refers to a module for wired or wireless Internet access, and may be built-in or external to the NFC smartphone 100. As a wireless Internet technology, WLAN (Wireless LAN) (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access), and the like may be used.

The short-range communication module 112 refers to a module for short-range communication. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, and the like may be used.

In particular, in the present invention, among RFID technologies, in particular, NFC communication technology is used, and the NFC technology according to an embodiment of the present invention should be understood as a concept including all short-range wireless communication technologies operating in a frequency domain other than 13.56 MHz.

The location information module 113 is a module for acquiring the location of the NFC smartphone 100, and a representative example thereof is a GPS (Global Position System) module.

Referring to FIG. 2, an audio/video (A/V) input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes an image frame such as a still image or a moving image obtained by an image sensor in a video call mode or a photographing mode. The processed image frame may be displayed on the display unit 151.

The image frame processed by the camera 121 may be stored in the memory 140 or transmitted to the outside through the communication unit 110. Two or more cameras 121 may be provided depending on the use environment.

The microphone 122 receives an external sound signal by a microphone and processes it as electrical voice data. Various noise removal algorithms may be implemented in the microphone 122 to remove noise generated in the process of receiving an external sound signal.

The user input unit 130 generates input data for the user to control the operation of the NFC smartphone. The user input unit 130 may include a joystick, a key pad, a dome switch, a touch pad (positive pressure/power failure), a jog wheel, a jog switch, a mouse, and the like.

The memory 140 may store a program for the operation of the control unit 170 and may temporarily store input/output data. The memory 140 may store data on vibrations and sounds of various patterns output when a touch input on the touch screen is performed.

The memory 140 is a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (eg, SD or XD memory, etc.), and RAM. (Random Access Memory, RAM), SRAM (Static Random Access Memory), ROM (Read-Only Memory, ROM), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM (Programmable Read-Only Memory), magnetic memory, magnetic It may include at least one type of storage medium among a disk and an optical disk. The NFC smartphone 100 may operate in connection with a web storage that performs a storage function of the memory 140 over the Internet.

The output unit 150 is for generating output related to visual, auditory or tactile sense, and includes a display unit 151, an audio output module 152, an alarm unit 153, and a haptic module 154. I can. Here, the haptic module 154 may also be included in the user input unit 130.

The display unit 151 displays (outputs) information processed by the NFC smartphone 100.

The display unit 151 includes a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display. display) and a 3D display.

Some of these displays may be configured as a transparent type or a light-transmitting type so that the outside can be seen through it. This may be referred to as a transparent display, and a representative example of the transparent display is TOLED (Transparant OLED). The rear structure of the display unit 151 may also be configured as a light-transmitting structure. With this structure, the user can see an object located at the rear of the NFC smartphone body through an area occupied by the display unit 151 of the NFC smartphone body.

Two or more display units 151 may exist depending on the implementation form of the NFC smartphone 100. For example, in the NFC smartphone 100, a plurality of display units may be spaced apart or integrally disposed on one surface, or may be disposed on different surfaces, respectively.

The sound output module 152 may output audio data received from the communication unit 110 or stored in the memory 140. The sound output module 152 also outputs a sound signal related to data (eg, a failure notification signal, etc.) acquired by the NFC smartphone 100. The sound output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying the occurrence of an event of the NFC smartphone 100. Examples of events occurring in mobile NFC smartphones include call signal reception, message reception, key signal input, and touch input. The alarm unit 153 may output a signal for notifying the occurrence of an event in a form other than a video signal or an audio signal, for example, by vibration. The video signal or audio signal may also be output through the display unit 151 or the audio output module 152, so that they 151 and 152 may be classified as part of the alarm unit 153.

The haptic module 154 generates various tactile effects that the user can feel. A typical example of the tactile effect generated by the haptic module 154 is vibration. The intensity and pattern of vibration generated by the haptic module 154 can be controlled. For example, different vibrations may be synthesized and output or may be sequentially output.

In addition to vibration, the haptic module 154 is designed to respond to stimuli such as an arrangement of pins vertically moving with respect to the contact skin surface, blowing force or suction force of air through the injection or inlet, grazing against the skin surface, contact of an electrode, and electrostatic force. It can generate various tactile effects, such as an effect by the effect and an effect by reproducing the feeling of cooling and warming using an endothermic or heat generating element.

The haptic module 154 may not only deliver a tactile effect through direct contact, but may also be implemented so that a user can feel the tactile effect through a muscle sensation such as a finger or an arm. Two or more haptic modules 154 may be provided depending on the configuration aspect of the monitoring device 400.

The power supply unit 160 receives external power and internal power under the control of the control unit 170 and supplies power necessary for the operation of each component.

The controller 170 typically controls the overall operation of the NFC smartphone 100.

Various embodiments described herein may be implemented in a recording medium that can be read by a computer or a similar device using, for example, software, hardware, or a combination thereof.

According to hardware implementation, the embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions. They can be implemented by the control unit 170.

According to a software implementation, embodiments such as procedures or functions may be implemented together with separate software modules that perform at least one function or operation. The software code can be implemented by a software application written in an appropriate programming language. The software code is stored in the memory 140 and can be executed by the control unit 170.

As shown in FIG. 3, a mouse pad 200 including an NFC function according to an embodiment of the present invention includes a short-range communication module 210, a memory 220, and a control unit 230.

The short-range communication module 210 may be a module for performing an NFC function, and specifically, may be an antenna.

The memory 220 may include NFC ID information or signature information. In addition, the memory 220 may store NFC smartphone information of the NFC smartphone touched by the first NFC. In addition, the memory 220 may store NFC smartphone information of one or more NFC smartphones. For a description of the memory 220, refer to the description of the memory 140 of FIG. 2.

The controller 230 may compare the information acquired through the short-range communication module 210 with the information stored in the memory 220 through the short-range communication module 210 and the memory 220 control to identify the authenticated NFC smartphone. have.

In addition, the controller 230 may transmit NFC ID information or signature information stored in the memory 220 to the NFC smartphone 100 through the control of the short-range communication module 210 and the memory 220.

In addition, the controller 230 may perform a function of protecting the recorded terminal unique information after performing the NFC smartphone 100 registration procedure. Specifically, when the terminal-specific information is recorded, the controller 230 may perform a write-protection procedure such as write prohibition or memory erasure prevention, so that the recorded data is not unintentionally changed or erased. In addition, a mouse pad including an NFC function may be used in combination with other general media without a communication function.

For a description of the control unit 230, refer to the description of the control unit 170 of FIG. 1.

As shown in FIG. 4, the PC 400 without an NFC function according to an embodiment of the present invention includes a communication unit 410, an output unit 420, a memory 430, a power supply unit 440, and a control unit 450. It may include. However, the PC 400 without the NFC function according to an embodiment of the present invention does not necessarily have to include all the configurations shown in FIG. 4, and may further include other configurations as necessary.

Here, the communication unit 410 is the same as the communication unit 110 described in FIG. 2, but does not include an NFC function. Other configurations except for the communication unit 410 are the same as those described in FIG. 2, and detailed descriptions thereof will be omitted here.

Hereinafter, the algorithm to be described in FIGS. 5 to 9 is the NFC smartphone 100, the mouse pad 200 including the NFC function, the server 300, and the software installed in the PC 400 without the NFC function appropriately through the control unit. It is executed, and can be implemented through appropriate operation of other components accordingly.

A first touch is generated (S1001). Here, the first touch means the first touch between the mouse pad 200 including the NFC function and the NFC smartphone 100.

When the first touch occurs between the NFC smartphone 100 and the mouse pad 200 including the NFC function, the NFC smartphone 100 displays an app installation page (S1003). Specifically, when the first touch occurs, the NFC smartphone 100 transmits an app installation request to a separate application management server (eg, an app store). The server 300 receiving the app installation request provides the app installation page to the NFC smartphone 100.

In one embodiment, when a touch occurs between the NFC smartphone 100 and the mouse pad 200 including the NFC function, a connection between the NFC smartphone 100 and the application server is established, and the app download page is an NFC smartphone. Provided in 100. Accordingly, the user's convenience may be increased by automatically displaying an app installation page by a touch without the user manually searching for an app in the app store.

NFC smartphone 100 receives an input based on the NFC installation page, receives and installs the app (S1005).

After installing the app, a second touch occurs (S1007). Here, the second touch means the first touch after installing the app.

When the second touch occurs, the NFC smartphone 100 displays a registration guide (S1009). Here, the registration guide means displaying a registration number to be input to the PC 400 without the NFC function.

While displaying the registration guide, the NFC smartphone 100 requests the execution of the remote control software to the PC 400 without the NFC function (S1011). The NFC smartphone 100 may request the execution of the remote control software through the server 300, or may directly request the execution of the remote control software to the PC 400 without the NFC function. Here, the remote control software is software for remotely controlling the PC 400 without an NFC function through an NFC smartphone verified through NFC-based authentication.

The PC 400 without the NFC function receives the registration number input through the screen displayed through the execution of the remote control software (S1013). The registration number received here may be that the user sees the registration number displayed in step S1009 and inputs the same. By receiving the registration number displayed in step S1009, it is possible to allow control from the NFC smartphone (100).

The PC 400 without the NFC function transmits the received registration number to the server 300 (S1015). The PC 400 without the NFC function may transmit product information generated by the PC 400 without the NFC function together with the registration number at this time.

The server 300 compares the registration number received from the PC 400 without the NFC function with the registration number received from the NFC smartphone 100, and if they match, based on the product information received from the PC 400 without the NFC function The registration of the PC 400 without the NFC function is completed (S1017).

The server 300 transmits the received registration number to the NFC smartphone 100 (S1019). At this time, the server 300 may transmit the product information of the PC 400 without the NFC function together with the registration number.

The NFC smartphone 100 compares the registration number received from the server 300 with the registration number displayed in step S1009, and if it matches, registers the PC 400 without the NFC function based on the product information received from the server 300 Is completed (S1021).

Through the above procedure, the app can be installed on the NFC smartphone 100, and the PC 400 without the NFC function can be registered to the server 300 and the NFC smartphone 100 through the app installed on the NFC smartphone. have.

A touch occurs between the mouse pad 200 including the NFC function and the NFC smartphone 100 (S2001).

When a touch occurs, the mouse pad reads the stored NFC authentication information (S2003). The NFC authentication information stored here may include NFC ID information and signature information.

The mouse pad 200 including the NFC function transmits NFC authentication information to the NFC smartphone 100 (S2005). NFC authentication information may include NFC ID information and signature information.

The NFC smartphone 100 generates an encryption key using the obtained NFC ID information (S2007). In an embodiment, the NFC smartphone 100 may generate an encryption key using a block encryption algorithm.

The NFC smartphone 100 generates a signature using the generated encryption key and encryption algorithm (S2009). In an embodiment, the NFC smartphone 100 may generate a signature using a block encryption algorithm. In another embodiment, the NFC smartphone 100 may generate a signature using a hash algorithm.

The NFC smartphone 100 determines whether or not the generated signature matches the signature transmitted from the mouse pad including the NFC function (S2011). The NFC smartphone 100 generates and generates a signature based on the authentication information received from the mouse pad 200 including the NFC function to determine whether the mouse pad 200 including the NFC function is duplicated. One signature is compared with the signature received from the mouse pad 200 including the NFC function to determine whether or not they match.

If it matches, the NFC smartphone 100 transmits the signature to the server 300 (S2013). The signature transmitted to the server 300 is stored in the server 300, and then may be used to verify whether the control information transmitted from the NFC smartphone 100 is authenticated.

A touch occurs between the mouse pad 200 including the NFC function and the NFC smartphone 100 (S3001).

The mouse pad 200 including the NFC function reads NFC ID information (S3003).

The mouse pad 200 including the NFC function transmits the read NFC ID information to the NFC smartphone 100 (S3005).

The NFC smartphone 100 generates a registration number using the received NFC ID information (S3007). Specifically, the NFC smartphone 100 may generate a registration number by applying the received NFC ID information to a hash algorithm. The NFC smartphone 100 may perform the copy verification procedure described in FIG. 6 before generating the registration number.

The NFC smartphone 100 generates a signature using the received NFC ID information (S3009). The signature generation algorithm is the same as that described in FIG. 6.

The NFC smartphone 100 transmits the received NFC ID information and the generated signature to the server 300 (S3011).

The server 300 stores the received NFC ID information and signature (S3013).

NFC smartphone 100 displays the generated registration number (S3015). The NFC smartphone 100 may display a registration number generated through the output unit 150.

The PC 400 without the NFC function receives the registration number (S3017). Here, the registration number received by the PC 400 without the NFC function may be the registration number input by the user while viewing the registration number displayed on the NFC smartphone 100.

The PC 400 without the NFC function transmits the received registration number to the server 300 (S3019).

When the server 300 receives the registration number from the PC 400 without the NFC function, the server 300 verifies the received registration number (S3021). Specifically, the server 300 generates a registration number by putting the NFC ID information received from the NFC smartphone 100 into an encryption algorithm, and verifies the registration number by checking whether the generated registration number matches the received registration number. .

Since the server 300 relays the NFC smartphone 100 and the PC 400 without the NFC function, it is necessary to check whether a secure connection has been made between the NFC smartphone 100 and the PC 400 without the NFC function. Therefore, the server 300 compares the registration number generated based on the information received from the NFC smartphone 100 with the registration number received from the PC 400 without the NFC function, and the PC 400 without the NFC function is It is possible to check whether it has been approved to operate according to the security command from the phone 100.

When the verification of the registration number from the PC 400 without the NFC function is completed, the server 300 notifies the registration completion to the NFC smartphone 100 and the PC 400 without the NFC function (S3023). When the registration completion is notified, the server 300 transmits the control command transmitted from the NFC smartphone 100 to the PC 400 without the NFC function based on the relevant NFC information, and the PC 400 without the NFC function is received. Performs the operation according to the command.

8 shows a procedure for transmitting a secure control command to a PC 400 without an NFC function according to an embodiment of the present invention.

Here, the secured control command refers to the control right for the NFC-free PC 400 in which the NFC smartphone 100 is registered by a verification procedure between the mouse pad 200 including the NFC function and the NFC smartphone 100. It refers to a control command generated in the acquired situation.

A touch occurs between the mouse pad 200 including the NFC function and the NFC smartphone 100 (S4001). Here, the touch is the first event for performing authentication by exchanging information with a mouse pad including an NFC function in order for the NFC smartphone 100 to acquire control right. In this way, in order for the NFC smartphone 100 to acquire control rights for other devices, a touch must occur between the mouse pad 200 including the NFC function, and this touch is performed only through short-range wireless communication. It can have much more robust security compared to security methods such as relying or remote input.

The NFC smartphone 100 performs a duplicate NFC information verification procedure (S4003). Since the detailed algorithm for the verification procedure has been described in FIG. 6, detailed descriptions are omitted here.

The NFC smartphone 100 checks whether the server 300 of NFC information is registered (S4005). As described in FIG. 7, the NFC smartphone 100 transmits the information of the mouse pad 200 including the NFC function for which the copy verification has been completed to the server 300, and the server 300 registers the verified NFC information. . Through the registration confirmation procedure, if the NFC information is previously registered, the following procedure is performed, and if not registered, the registration procedure described in FIG. 7 is performed.

The NFC information registered in the server 300 may be used to control the PC 400 without the related NFC function afterwards.

NFC smartphone 100 generates a signature (S4007). Since the step of generating the signature is the same as that described in FIG. 6, a detailed description is omitted here.

The NFC smartphone 100 delivers NFC information to the server 300. NFC information transmitted here may include NFC ID information and signature. At this time, the NFC smart phone 100 may transmit the information of the state change of the PC 400 without the NFC function along with the NFC ID information and signature. Here, the state change information may be information about changing the state of the PC 400 without the NFC function as a control command generated by the authenticated NFC smartphone 100.

In a specific embodiment, the state change may be related to lock/unlock the screen of the PC 400 without the NFC function. This will be described in detail with reference to FIG. 9 below.

The server 300 verifies whether the NFC information matches the registration information (S4011). Specifically, the server 300 compares the registration information generated based on the NFC information transmitted from the NFC smartphone 100 with the registered information stored in advance to verify the match. As described in FIG. 7, the registration information is information necessary for acknowledging the control right for the PC 400 without the NFC function of the NFC smart phone 100, and the server 300 receives a control command from the NFC smart phone 100. Before delivering to the PC 400 without the NFC function, it is verified whether the registration information matches.

When the registration number verification is complete, the server 300 notifies the state change to the PC 400 without the NFC function (S4013). The notification of the state change is a procedure that notifies the control command from the NFC smartphone 100 related to the state change before it is transmitted to the PC 400 without the NFC function, and at this time, the server 300 only notifies the change of the state. Details of the specific state change are not communicated.

When the notification of the state change arrives from the server 300, the PC 400 without the NFC function transmits the stored registration number to the server 300 (S4015). The registration number stored here means the registration number input from the user described in FIG. 7. The PC 400 without the NFC function may transmit the registration number to the server 300 to convey the meaning of approving the state change from the NFC smartphone 100 that sent the matching registration number to the server 300.

The server 300 receives the registration number from the PC 400 without the NFC function and verifies whether it matches the previously stored registration number in step S4011 (S4017). The server 300 receives the registration number from the PC 400 without the NFC function and compares it with the previously stored registration number, thereby confirming the secure connection relationship between the NFC smartphone 100 and the PC 400 without the NFC function related to the registration number. I can.

When the verification of the registration number is completed, the server 300 transmits the state change transmitted from the NFC smartphone 100 to the PC 400 without the NFC function (S4019).

And the PC 400 without the NFC function performs a function according to the transmitted state (S4021). As a result, even in a situation where security authentication through interaction with the mouse pad 200 including the NFC function is impossible because the PC 400 without the NFC function does not include the NFC function, the NFC smartphone that has been verified through the NFC function The secured control command from 100 may be received and operated by the PC 400 without the NFC function. As a result, through the system according to an embodiment of the present invention, under any circumstances, it is possible to securely control the PC 400 without the NFC function if only the mouse pad 200 including the NFC function and the NFC smartphone 100 are required.

The procedure described in FIG. 9 relates to performing the function of a PC without an NFC function according to the transmission of the state change from the NFC smartphone described in FIG. 8. The explanation will be focused on the procedure.

A first touch occurs (S5001). Here, as described above, touch means that the mouse pad 200 including the NFC function and the NFC smartphone 100 are disposed within a certain distance to exchange authentication information. In a specific application example, it means that the NFC smartphone 100 is placed on the mouse pad 200 and the mouse pad 200 and the NFC smartphone 100 exchange authentication information.

When the NFC smartphone 100 is placed on the mouse pad 200, the NFC smartphone 100 may obtain NFC-related information from the mouse pad 200.

The NFC smartphone 100 checks whether the NFC module embedded in the mouse pad 200 is duplicated based on the NFC-related information acquired from the mouse pad 200 (S5003). For detailed replication verification, refer to FIG. 6 described above.

If the verification result is duplicated, the NFC smartphone 100 does not proceed with any further procedures and immediately terminates the app or related function after displaying an error message.

If the verification result is not duplicated, the NFC smartphone 100 determines whether to install the NFC app (S5005). Here, the NFC app refers to an app that performs NFC authentication and generates a secure control command as described above.

If the NFC app is not installed on the NFC smartphone 100, the app is automatically installed through the automatic app installation procedure (S5007). Refer to FIG. 5 for a detailed app automatic installation procedure.

When the NFC app is installed on the NFC smartphone 100, the NFC smartphone 100 proceeds with the authentication through the server 300 and the registration procedure of the PC 400 without the NFC function (S5009). The authentication procedure through the server 300 and the registration procedure of the PC are described with reference to FIG. 7. Through step S5009, the PC 400 without the NFC function is registered in the server, and the NFC-based authentication is completed, the NFC smartphone 100 acquires control rights for the screen locking software installed on the PC 400 without the NFC function.

After the PC 400 without the NFC function is registered in the server 300, a second touch occurs (S5011). When a touch occurs, the NFC smartphone 100 acquires NFC-related information again.

In a situation where the screen lock software is running on the PC, the NFC smartphone 100 transmits a screen lock command to the PC without the NFC function through the server 300 by triggering the acquisition of NFC-related information (S5013). In this case, the control command transmitted through the NFC smartphone 100 may be transmitted to the PC 400 without the NFC function through an additional authentication process in the server 300. For a specific additional authentication process, refer to what has been described with reference to FIG. 8.

Here, the screen lock software is stored in the memory 430 of the PC 400 without the NFC function, and is executed by the control unit 450. The screen lock software converts the screen output by the output unit 420 of the PC 400 without the NFC function to a lock screen, and changes the state of the PC 400 without the NFC function in a state that does not receive any input from the user. .

In a specific embodiment, the screen lock software controls to output a lock screen, and the lock screen may be a screen in which user input through a mouse or the like is restricted. For example, the lock screen may be displayed so that all icons are not displayed, and even if there is a program that is automatically executed, the program execution is hidden.

The screen lock software cannot be forcibly terminated in Task Manager mode, and it can be automatically re-executed during a forced reboot to maintain the locked state.

Accordingly, the locked state of the screen lock software can be unlocked only through a secure control command provided from the NFC app in the NFC smartphone in which authentication is completed by contacting the NFC smartphone with the unique mouse pad. Specifically, the NFC smartphone registered on the unique mouse pad is touched, and the NFC smartphone authenticates the NFC information of the unique mouse pad, and can be released only through a secure control command generated based thereon. As a result, even a PC that does not include the NFC function and cannot authenticate through NFC can run the screen lock software through the NFC-based security algorithm.

While the screen lock software is operating, a third touch occurs (S5015).

When the third touch occurs, the NFC smartphone 100 transmits a screen unlocking command of the PC without the NFC function through the server 300 (S5017). Specifically, when the third touch occurs, the NFC smartphone 100 acquires NFC-related information again. Then, the NFC smartphone 100 verifies the NFC-related information again, and when the verification is completed, generates and transmits a control command for unlocking the screen of the PC without the NFC function. In an additional embodiment, the UI for unlocking the screen of the NFC smartphone 100 may include a menu that asks the user whether to unlock or keep the screen.

Therefore, in the system according to an embodiment of the present invention, there is an advantage in that an NFC-based security technology can be applied even in a device without an NFC function.

The present invention described above can be implemented as a computer-readable code on a medium on which a program is recorded. The computer-readable medium includes all types of recording devices that store data that can be read by a computer system. Examples of computer-readable media include hard disk drives (HDDs), solid state disks (SSDs), silicon disk drives (SDDs), ROMs, RAM, CD-ROMs, magnetic tapes, floppy disks, optical data storage devices, etc. There is also a carrier wave (for example, transmission over the Internet) also includes the implementation in the form of.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those of ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

Claims

In a system for remotely controlling a screen lock function of a personal computer (PC) that does not include an NFC function,

A mouse pad including an NFC function module that stores unique NFC information and transmits NFC information to the NFC smartphone when the NFC function is activated by accessing the NFC smartphone within a certain distance;

NFC smart that performs a security procedure based on the NFC information transmitted from the mouse pad including the NFC function, generates a secure control command, and transmits the NFC information and the signature generated based on the NFC information to the server pawn;

A server for verifying the transmitted secured control command through a signature generated based on the NFC information and the NFC information received from the NFC smartphone, and transferring the secured control command to a registered NFC-free PC; And

Including a PC that performs a screen lock function by operating the screen lock software according to the secure control command transmitted from the server

PC screen lock remote control system that does not contain NFC function.
The method of claim 1,

When the first touch occurs, the NFC smartphone verifies whether the NFC module included in the mouse pad is a duplicate, and if not, executes a first app that generates NFC authentication and a secure control command.

PC screen lock remote control system that does not contain NFC function.
The method of claim 2,

The NFC smartphone automatically installs and executes the first app when the first app is not installed.

PC screen lock remote control system that does not contain NFC function.
The method of claim 2,

When the second touch occurs, the NFC smartphone generates a command to lock the screen of the PC through the first app, and transmits the generated command through the server.

PC screen lock remote control system that does not contain NFC function.
The method of claim 4,

When the third touch occurs, the NFC smartphone generates a command to unlock the screen of the PC through the first app and transmits it to the PC.

PC screen lock remote control system that does not contain NFC function.
The method of claim 1,

The screen lock software installed on the PC converts the screen of the PC to a lock screen and keeps it in a state in which no input from the user is received.

PC screen lock remote control system that does not contain NFC function.
The method of claim 6,

The lock screen output by the screen lock software does not display an icon and does not display an auto-run program.

PC screen lock remote control system that does not contain NFC function.
The method of claim 6,

The screen lock software above cannot be terminated in the task manager mode, and is re-executed even when a forced reboot is performed to maintain the screen lock state.

PC screen lock remote control system that does not contain NFC function.