KR20200022258A - Device and method to process password input from user - Google Patents

Abstract

According to an embodiment of the present invention, a user terminal comprises a display device, a storage medium, and a controller configured to control the display device and the storage medium. The controller comprises: a random number generator configured to provide a random number; a virtual keypad driver configured to change arrangement of a virtual keypad according to a random number while displaying the virtual keypad including a plurality of button areas on the display device and determine input values corresponding to a plurality of button areas selected in response to user inputs for selecting the plurality of button areas as a password; and a local controller configured to distribute and store first data based on the random number and second data based on the input values to an external server and the storage medium.

Description

Device and method for processing password input from user {DEVICE AND METHOD TO PROCESS PASSWORD INPUT FROM USER}

The present invention relates to a network system, and more particularly to apparatuses and methods for processing a password input from a user.

Recently, due to the development of a data communication network, many people use the Internet, and thus, various services using the Internet are provided. Some of these services require passwords for user authentication, and therefore, high security of passwords is required to prevent passwords entered by users from being leaked from attacks such as hacking. For example, according to such a request, a password input by a user may be encrypted and transmitted.

To further improve security for passwords, a virtual keypad may be provided. The arrangement of the virtual keypad changes each time it is created, and the data associated with the password is determined (or generated) when the user selects the buttons of the virtual keypad as the password. The data associated with the password may be further encrypted, and the data associated with the password or additionally encrypted data may be transmitted in place of the password. Changing the arrangement of the virtual keypad each time it is created may mean that the data associated with the password has more security than the password itself.

The above description is only to assist in understanding the background art of the technical idea of the present invention, and thus it cannot be understood as the content corresponding to the prior art known to those skilled in the art.

Embodiments of the present invention provide an apparatus and method for providing improved security for a password input by a user and data associated with the password.

A user terminal for processing a password input from a user according to an embodiment of the present invention, a display device; Storage media; And a controller configured to control the display device and the storage medium. The controller includes a random number generator configured to provide a random number; Displaying a virtual keypad including a plurality of button regions on the display device, changing the arrangement of the virtual keypad according to the random number, and selecting the plurality of button regions as the password; A virtual keypad driver configured to determine input values respectively corresponding to button areas; And a local controller configured to distribute and store first data based on the random number and second data based on the input values in an external server and the storage medium.

The local controller includes an encryptor configured to encrypt the random number and to encrypt the input values, wherein the first data includes the encrypted random number and the second data includes the encrypted input values. Can be.

The encryptor may be configured to encrypt the random number and the input values via an RSA algorithm.

A user terminal for processing a password input from a user according to another embodiment of the present invention, a display device; Storage media; And a processor configured to control the display device and the storage medium. The processor is configured to: display a virtual keypad including a plurality of button regions on the display device, and change an arrangement of the virtual keypad according to a random number generated in response to a first command signal; Determine input values respectively corresponding to the selected button regions in response to user inputs for selecting the plurality of button regions with the password; And distribute first and second data based on the random number and second data based on the input values to an external server and the storage medium.

The user terminal further comprises a communicator configured to communicate with the external server via a network, wherein the processor is configured to store the first data in the external server through the communicator and store the second data in the storage medium. Can be configured.

The processor is configured to access the external server in response to a second command signal to obtain the first data; The random number may be restored based on the obtained first data and the input values may be restored based on the second data read from the storage medium.

The processor may be configured to recover the password according to the restored random number and the restored input values.

The processor is configured to decode the obtained first data and to decode the read second data, wherein the decoded first data includes the reconstructed random number, and the decoded second data is decoded. May contain input values.

The user terminal further comprises a communicator configured to communicate with the external server via a network, wherein the processor is configured to store the first data in the storage medium and store the second data in the external server via the communicator. Can be configured.

Another aspect of the invention relates to a method for processing a password input from a user. The method includes generating a random number in response to a first command signal; Displaying a virtual keypad including a plurality of button regions on a display device, wherein the arrangement of the virtual keypad is changed according to the random number; Determining input values respectively corresponding to the selected button areas in response to user inputs for selecting the plurality of button areas as the password; And distributing and storing the first data based on the random number and the second data based on the input values in an external server and an internal storage medium.

The distributed storage may include: storing the first data on the external server through a network; And storing the second data in the internal storage medium.

The method includes: in response to a second command signal, accessing the external server via the network to obtain the first data; Restoring the random number based on the obtained first data; Reading the second data from the storage medium; And restoring the input values based on the read second data.

The method may further include restoring the password according to the restored random number and the restored input values.

Another aspect of the invention relates to a client server for providing program codes to a user terminal. The client server includes a communicator; A processor configured to communicate with a user terminal via the communicator; And a database for storing program codes to be executed by the user terminal. The program codes may include: first instructions for displaying a virtual keypad including a plurality of button areas on a display device of the user terminal, and for changing an arrangement of the virtual keypad according to a random number; Second instructions for determining input values respectively corresponding to the selected button areas in response to user inputs for selecting the plurality of button areas as a password; And third instructions for distributing and storing the first data based on the random number and the second data based on the input values in an external server of the user terminal and an internal storage medium of the user terminal.

The third instructions may include instructions for storing the first data on the external server and storing the second data on the internal storage medium.

The program codes access the external server to obtain the first data; Restore the random number based on the obtained first data; Read the second data from the storage medium; The apparatus may further include fourth instructions for restoring the input values based on the read second data.

The program codes may further include fifth instructions for recovering the password according to the restored random number and the restored input values.

According to embodiments of the present invention, an apparatus and method for providing improved security for a password input by a user and data associated with the password are provided.

1 is a block diagram illustrating a network system according to an exemplary embodiment of the present invention.
2 is a block diagram illustrating a user terminal according to an exemplary embodiment of the present invention.
3 is a diagram illustrating an embodiment of a screen including a virtual keypad displayed on a user terminal.
4 is a table showing input values corresponding to character buttons of a virtual keypad, respectively.
5 is a block diagram illustrating a method of storing a random number and an input value set.
6 is a flowchart illustrating a method of processing a password input from a user in a user terminal according to an exemplary embodiment of the present invention.
7 is a flowchart illustrating a method of providing a password according to an embodiment of the present invention.
8 is a block diagram illustrating a user terminal according to another exemplary embodiment.
9 is a block diagram illustrating a client server capable of communicating with the user terminal of FIG. 8.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that in the following description, only parts necessary for understanding the operation according to the present invention will be described, and descriptions of other parts will be omitted so as not to obscure the gist of the present invention. In addition, the present invention is not limited to the embodiments described herein and may be embodied in other forms. However, the embodiments described herein are provided to explain in detail enough to easily implement the technical idea of the present invention to those skilled in the art.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "indirectly connected" with another element in between. . The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, except to exclude other components unless otherwise stated. "At least one of X, Y, and Z" and "at least one selected from the group consisting of X, Y, and Z" is X one, Y one, Z one, or two of X, Y, and Z or Any combination of the above (eg, XYZ, XYY, YZ, ZZ) can be interpreted. Here, "and / or" includes all combinations of one or more of the configurations.

1 is a block diagram illustrating a network system according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the network system 1 includes a network 5, a user terminal 10, a web server 20, and a storage server 30.

The network system 1 may include a plurality of devices, servers, and / or software configurations that operate to perform various methods in accordance with embodiments of the invention described herein. The devices and / or servers shown in FIG. 1 may be configured in other ways, and the operations and services provided by the devices and / or servers may be combined or separated for the embodiments described herein. And may be performed by more or fewer devices and / or servers. One or more devices and / or servers may be run and / or maintained by the same or different businesses.

The network 5 connects various components in the network system 1 such as the user terminal 10, the web server 20, and the storage server 30. The network 5 may comprise at least one of a public network, at least one private network, a wired network, a wireless network, another suitable type of network, and combinations thereof.

The user terminal 10 may communicate with the web server 20 and the storage server 30 via the network 5. The user terminal 10 is configured to access the web server 20 to register a user ID and perform operations for using the services provided by the web server 20.

In embodiments, the user terminal 110 may be a computer, a Ultra Mobile PC (UMPC), a workstation, a net-book, a Personal Digital Assistants (PDA), a portable computer, a web tablet, a wireless device. It may be a computer device capable of transmitting and receiving information in a wired and / or wireless environment such as a telephone, a mobile phone, a smart phone, or the like.

The web server 20 may communicate with the user terminal 10 through the network 5 to provide various services. The web server 20 may request the user terminal 10 for data for user authentication before providing some of the services. The user terminal 10 may process the input password when the user inputs a password, and transmit the processed data to the web server 20 as data associated with the password. The web server 20 may perform user authentication using the transmitted data.

In order to improve the security of the password entered by the user, the user terminal 10 may provide a virtual keypad as a user interface. When the command signal for calling the virtual keypad is generated internally, the user terminal 10 generates a random number in response to the generated command signal, and generates and displays a virtual keypad having an arrangement that changes according to the generated random number. Can be. When the user terminal 10 receives user inputs for selecting button areas included in the virtual keypad as a password, the user terminal 10 may determine input values respectively assigned to the selected buttons. The random number and input values may be provided as data associated with the password.

The random number and input values may be further processed in various ways, and embodiments of the present invention are not limited thereto. For example, random numbers and input values can be encrypted. For example, when the web server 20 requests a digitally signed public certificate, the web server 20 may digitally sign the public certificate using a random number and input values, and transmit the digitally signed public certificate to the web server 20.

The storage server 30 can communicate with the user terminal via the network 5. The storage server 30 provides a storage space for the user terminal 10 to access and store data.

2 is a block diagram illustrating a user terminal according to an exemplary embodiment of the present invention. 3 is a diagram illustrating an embodiment of a screen including a virtual keypad displayed on a user terminal. 4 is a table showing input values corresponding to character buttons of a virtual keypad, respectively. 5 is a block diagram illustrating a method of storing a random number and an input value set.

Referring to FIG. 2, the user terminal 100 may control the first to third interfaces 101, 102, and 103, the controller 110, the display device 120, the storage medium 130, and the communicator 140. It may include.

The controller 110 may communicate with the display apparatus 120, the storage medium 130, and the communicator 140 through the first to third interfaces 101 to 103, respectively. In embodiments, the first to third interfaces 101 to 103 may be provided as components of a system bus included in the user terminal 100. The first interface 101 provides a communication interface between the controller 110 and the display device 120. The second interface 102 provides a communication interface between the controller 110 and the storage medium 130. The third interface 103 provides a communication interface between the controller 110 and the communicator 140.

The controller 110 includes a local controller 111, a random number generator 112, and a virtual keypad driver 113. The local controller 111 may communicate with other components in the user terminal 100 through the channel CH. The local controller 111 may operate in response to command signals received through the channel CH. When the first command signal for calling the virtual keypad is received through the channel CH, the local controller 111 may control the random number generator 112 to output the first control signal CTRL1 to output the random number. Can be. The local controller 110 may control the virtual keypad driver 113 to output the second control signal CTRL2 to generate the virtual keypad.

The random number generator 112 is configured to generate a random number in response to the first control signal CTRL1. In FIG. 2, random number generator 112 is shown to be included in controller 110. However, this is merely an example. The random number generator 112 may be disposed outside the controller 110 and included in other components of the user terminal 100.

The random number may be generated in various ways. For example, the random number may be a time stamp. As another example, the random number may be an output value calculated using the time stamp as an input value. The random number generator 112 transmits the generated random number RD to the virtual keypad driver 113.

In response to the second control signal CTRL2, the virtual keypad driver 113 generates a virtual keypad according to the random number RD and transmits the generated virtual keypad to the display device 120 through the first interface 101. Configured to display. The virtual keypad driver 113 changes the arrangement of the virtual keypad according to the received random number RD.

Referring to FIG. 3 together with FIG. 2, the screen displayed on the user terminal 100 includes a password display area 210 and a virtual keypad 220. The virtual keypad 220 includes a password input area 230, and the password input area 230 includes a plurality of button areas. Each of the button regions may be filled with characters 221 or provided as an inactive symbol 222. Whenever a user input for selecting a button area of the password input area 230 is received, a character 221 corresponding to the selected button area may be displayed on the password display area 210. Alternatively, in order to prevent the password from being recognized by anyone other than the user, an appropriate symbol may be displayed in the password display area 210 instead of the letter corresponding to the selected button area. The button area provided by the inactive symbol 222 may not be selected as a password. In FIG. 3, button regions provided as inactive symbols 222 are patterned diagonally.

The arrangement of the characters 221 and the inactive symbols 222 filled in the button areas of the password input area 230 is changed according to the random number RD. The arrangement of characters 221 and inactive symbols 222 may be determined in various ways, and embodiments of the invention are not limited in this regard. For example, the number and / or positions of the inactive symbols 222 may be determined according to the random number RD, and the characters 221 may be filled in the remaining button areas. The arrangement of the button regions filled with the characters 221 may likewise be changed according to the random number RD.

The virtual keypad 220 may further include a rearrange button 223, an enter button 224, and other necessary buttons. In response to a user input of selecting rearrange button 223, the first command signal described above may be regenerated. The controller 110 outputs the first control signal CTRL1 in response to the regenerated first command signal, and the random number generator 112 regenerates the random number RD in response to the first control signal CTRL1. Can be. The virtual keypad driver 113 provides a virtual keypad 220 including a password input area 230 having a different arrangement according to the regenerated random number RD. In response to a user input of selecting the enter button 224, the characters 221 of the selected button areas of the password input area 230 may be determined as a password.

In response to a user input for selecting a password using the virtual keypad 220, the virtual keypad driver 113 may locally input input values corresponding to the selected button areas of the password input area 230 as the input value set INVS. Transfer to the controller 111. Referring to FIG. 4, the first to m th button areas BTN1 to BTNm included in the password input area 230 correspond to the first to m th input values INV1 to INVm, respectively, where m is 1. Integer greater than or equal to). When at least some of the first to m-th button areas BTN1 to BTNm are selected as passwords, corresponding input values may be specified. The virtual keypad driver 113 may output the specified input values as the input value set INVS.

Referring back to FIG. 2, the local controller 111 receives a random number RD generated by the random number generator 112 and an input value set INVS generated by the virtual keypad driver 113.

The local controller 111 generates first data based on the random number RD, generates second data based on the input value set INVS, and stores the generated first data and the second data in a storage medium ( 130 and distributed storage on an external storage server 30 (see FIG. 1). The local controller 111 may include an encryption / decryptor 114 configured to encrypt the random number RD and the input value set INVS through, for example, a Rivest Shamir Adleman (RSA) algorithm. The local controller 111 may distribute and store the encrypted random number and the encrypted input value set in the storage medium 130 and the storage server 30. In embodiments, as shown in FIG. 5, the local controller 111 stores the input value set EINVS encrypted by the decryptor 114 in the storage medium 130, and the decryptor 114. The random number (ERD) encrypted by the PDU may be stored in the storage server 30 through the network 105. The local controller 111 communicates with the storage medium 130 and the communicator 140 via the second and third interfaces 102, 103, respectively. The local controller 111 writes the encrypted input value set EINVS through the second interface 102 to the storage medium 130, and controls the communicator 140 through the third interface 103. The encrypted random number ERD may be stored in the storage server 30.

The user terminal 100 may require operations using a password or data associated with a password previously input without receiving the password again from the user. For example, the user terminal 100 may perform operations for user authentication by communicating with the web server 20 without a user input for receiving a password. In such a case, recovery of the password or data associated with the password is required.

A second command signal for requesting a password or data associated with the password may be received by the controller 110 through the channel CH. The local controller 111 may obtain the distributed randomly stored encrypted random number and the encrypted input value set from the storage medium 130 and the storage server 30. In embodiments, the local controller 111 may read the encrypted set of input values from the storage medium 130 via the second interface 102 and control the communicator 140 via the third interface 103. An encrypted random number can be obtained from (30).

The decryptor 114 is configured to decrypt the encrypted random number and the encrypted input value set, for example, via a Rist Shamir Adleman (RSA) algorithm to recover the random number and input value set. Furthermore, the local controller 111 provides the restored random number RD and the restored input value set INVS to the virtual keypad driver 113, and the virtual keypad driver 113 provides the restored random number RD and The password can be restored using the restored set of input values (INVS). For example, the virtual keypad driver 113 determines the button areas of the password input area 230 that were selected as passwords according to the restored input value set INVS, and the button areas that were selected according to the restored random number RD. By determining the characters corresponding to the data, the password can be recovered.

The recovered random number RD and the restored input value set INVS or the recovered password may be provided as a feedback signal for the second command signal. For example, the restored random number RD and the restored input value set INVS or the restored password may be provided to other components in the user terminal 100 connected through the channel CH.

In embodiments, each of the local controller 111, the random number generator 112, the virtual keypad driver 113, and the decryptor 114 may each be at least one of a hardware module, a software module, a firmware module, and a combination thereof. Can be provided.

According to an embodiment of the present disclosure, the user terminal 100 may include first data (eg, encrypted random number) based on a random number RD and second data (eg, based on an input value set INVS). , The encrypted set of input values) are distributed and stored in the storage medium 130 and the external storage server 30. As described above, since the arrangement of the virtual keypad 220 (see FIG. 3) varies according to the random number RD, it is very difficult to recover the password using the input value set INVS without the random number RD. Similarly, it is very difficult to recover a password using a random number RD without an input value set INVS. Accordingly, even if data of any one of the storage medium 130 and the storage server 30 is leaked, the password can be secured as long as the data of both the storage medium 130 and the storage server 30 are not leaked. This takes into account that the user terminal 100 receiving a password through the virtual keypad 220 is configured to provide a random number RD and an input value set INVS as data associated with the password. It may mean that it provides enhanced security to the user terminal 100 and the network system 1 including the same. Thus, the user terminal 100 and the network system 1 including the same having improved security for the user password can be provided.

6 is a flowchart illustrating a method of processing a password input from a user in a user terminal according to an exemplary embodiment of the present invention.

1 and 6, in step S110, in response to the first command signal for calling the virtual keypad, a random number is generated. For example, an application installed in the user terminal 10 may generate a first command signal for generating the virtual keypad 220 (see FIG. 3).

 In operation S120, the virtual keypad 220 is generated and displayed according to the random number. The arrangement of the virtual keypad 220 is changed according to the random number.

In step S130, it is determined whether another virtual keypad 220 is requested. If so, steps S110 to S120 are performed again. For example, when a user input for selecting the rearrangement button 223 (see FIG. 3) of the virtual keypad 220 is received, a first command signal is generated again, and in step S110 in response to the generated first command signal. And step S120 may be performed again. If not, step S140 is performed.

In operation S140, user inputs for selecting a plurality of button areas of the virtual keypad 220 as a password are sensed. For example, at least some of the button areas filled with characters 221 (see FIG. 3) may be selected by user inputs, and button areas filled with inactive symbols 222 (see FIG. 3) may be selected. none. In operation S150, input values corresponding to the selected button areas are determined.

In step S160, each of the random number and the input value set is encrypted. For example, a random number and a set of input values may be encrypted through a Rivest Shamir Adleman (RSA) algorithm. In operation S170, the encrypted random number and the encrypted input value set are distributed and stored in the internal storage medium 130 (see FIG. 2) and the external storage server 30. In embodiments, the encrypted set of input values may be stored in the internal storage medium 130 and the encrypted random number may be stored in the external storage server 30.

7 is a flowchart illustrating a method of providing a password according to an embodiment of the present invention.

1 and 7, in step S210, in response to a second command signal for requesting a password or data associated with a password, the external storage server 30 is accessed to obtain an encrypted random number. In operation S220, the encrypted input value set is read from the internal storage medium 130 (see FIG. 2).

In operation S230, each of the encrypted random number and the encrypted input value set is decrypted to recover the random number and the input value set. According to an implementation example, a random number restored as a feedback signal for the second command signal and a restored set of input values may be provided as data associated with the password.

According to an implementation example, provision of a password may be required as a feedback signal for the second command signal. In this case, step S240 may be further performed. In operation S240, the password is restored according to the decrypted random number and the decrypted input value set. For example, the button areas of the password input area 230 (refer to FIG. 3) that were selected as the password according to the decrypted input value set INVS are determined and correspond to the button areas that were selected according to the decrypted random number RD. The characters 221 (see FIG. 3) may be determined to restore the password. The recovered password may be provided as a feedback signal for the second command signal.

According to an embodiment of the present invention, the first data (eg, encrypted random number) based on the random number and the second data (eg, encrypted input value set) based on the input value set are stored in the storage medium 130. ) And externally stored in the storage server 30. Accordingly, even if data of any one of the storage medium 130 and the storage server 30 is leaked, the password can be secured as long as the data of both the storage medium 130 and the storage server 30 are not leaked. Accordingly, a method of processing a user password having improved security with respect to the user password can be provided.

8 is a block diagram illustrating a user terminal according to another exemplary embodiment.

Referring to FIG. 8, the user terminal 1000 may include a communicator 1100, an A / V input device 1200, a user interface 1300, a display device 1400, a nonvolatile storage medium 1500, A processor 1600, and a system memory 1700.

The communicator 1100 is configured to transmit a radio signal with at least one of a base station, an external server, and an external terminal on a mobile communication network. In this case, the wireless signal may include a voice call signal, a video call signal, or various types of data according to transmission and reception of a text / multimedia message. In addition, the communicator 1100 is configured to connect to the wireless Internet. Furthermore, the communicator 1100 is configured to perform short-range communication, and may include short-range communication such as Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, and the like. Communication techniques can be used. The communicator 1100 may be provided as the communicator 140 described with reference to FIG. 2.

The A / V input unit 1200 is for inputting an audio signal and a video signal, and may include a camera. The camera processes the image obtained by the image sensor. The image processed by the camera may be stored in the system memory 1700 or transmitted to the outside through the communicator 1100.

The user interface 1300 receives a user input for controlling operations of the user terminal 1000 or the processor 1600. The user interface 1300 may include a key pad, a dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, a finger mouse, and the like. In particular, when the touch pad is integrally formed with the display device 1400, this may be referred to as a touch screen. In this case, the user interface 1300 may be visualized by the display device 1400.

The display apparatus 1400 operates under the control of the processor 1600. The display device 1400 displays information processed by the user terminal 1000 or the processor 1600. For example, the display device 1400 may display an image under the control of the processor 1600. When the display device 1400 is integrally formed with the touch pad to form a touch screen, the display device 1400 may visualize the user interface 1300. The display device 1400 may be provided as the display device 120 of FIG. 2.

The display device 1400 may include at least one of various types of display devices, such as a liquid crystal display, an organic light-emitting diode display, and a flexible display.

The nonvolatile storage medium 1500 may be at least one of a flash memory type, a hard disk type, a multimedia card, and the like. The nonvolatile storage medium 1500 is configured to write and read data in response to the control of the processor 1600. The nonvolatile storage medium 1500 can be provided as the storage medium 130 of FIG. 2.

The communicator 1100, the A / V input device 1200, the user interface 1300, the display device 1400, the nonvolatile storage medium 1500, the processor 1600, and the system memory 1700 may be connected. A system bus may be further provided that connects to each other to provide a communication interface. In this case, the system bus may be provided as the first to third interfaces 101 to 103 of FIG. 2.

The processor 1600 may include either a general purpose or a dedicated processor, and may include a communicator 1100, an A / V inputter 1200, a user interface 1300, a display device 1400, and a nonvolatile storage medium 1500. And control operations of the system memory 1700.

The processor 1600 is configured to load program codes from the nonvolatile storage medium 1500 into the system memory 1700 and to execute the loaded program codes, including instructions that provide various functions when executed. The processor 1600, when executed by the processor 1600, loads a virtual keypad module 1710 into the system memory 1700 that performs the functions of the controller 110 described with reference to FIG. 2, and loads the loaded virtual keypad module. 1710 may be executed. For example, the virtual keypad module 1710, when executed by the processor 1600, instructions for performing the functions of the local controller 111, instructions for performing the functions of the random number generator 112, And commands for performing the functions of the virtual keypad driver 113. The virtual keypad module 1710, when executed by the processor 1600, displays (or visualizes) the virtual keypad as an additional user interface on the display device 140, and uses the user interface 1300 to display the button area of the virtual keypad. Detect user inputs to select them.

In embodiments, the system memory 1700 may be provided as a working memory of the processor 1600. In FIG. 8, the system memory 1700 is shown as a separate component from the processor 1600, but this is exemplary and at least a portion of the system memory 1700 may be integrated into the processor 1600. In embodiments, system memory 1700 may be provided as a buffer memory.

The system memory 1700 may include at least one of random access memory (RAM), read only memory (ROM), and other types of computer readable storage media.

9 is a block diagram illustrating a client server capable of communicating with the user terminal of FIG. 8.

According to an embodiment of the present disclosure, program codes executed by the user terminal 1000 of FIG. 8 may be provided from the client server 2000. Referring to FIG. 9, the client server 2000 may include a communicator 2100, a processor 2200, and a database 2300. The communicator 2100 may communicate with the user terminal 1000 through a network 5 (see FIG. 1). The database 2300 includes program codes that may be executed by the user terminal 1000 and / or the processor 1600 of FIG. 8, for example, the virtual keypad module 1710 or the virtual keypad module 1710 of FIG. 8. You can save your application. The processor 2200 may provide program codes stored in the database 2300 to the user terminal 1000 through the communicator 2100 in response to a request from the user terminal 1000. The program codes may be installed and executed in the user terminal 1000.

Although specific embodiments and application examples have been described herein, these are provided only to aid a more general understanding of the present invention, and the present invention is not limited to the above embodiments, and has ordinary skill in the art to which the present invention pertains. Many modifications and variations are possible in this disclosure from this disclosure.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and all of the equivalents and equivalents of the claims, as well as the appended claims, will belong to the scope of the present invention. .

10: user terminal
20: web server
30: storage server
110: controller
120: display device
130: storage medium
140: communicator

Claims (17)

A user terminal for processing a password input from a user:
Display devices;
Storage media; And
A controller configured to control the display device and the storage medium,
The controller,
A random number generator configured to provide a random number;
Displaying a virtual keypad including a plurality of button regions on the display device, changing an arrangement of the virtual keypad according to the random number, and selecting the plurality of button regions as the password; A virtual keypad driver configured to determine input values respectively corresponding to button areas; And
And a local controller configured to distribute and store the first data based on the random number and the second data based on the input values in an external server and the storage medium. The method of claim 1,
The local controller comprises an encrypter configured to encrypt the random number and to encrypt the input values,
The first data includes the encrypted random number,
The second data comprises the encrypted input values. The method of claim 2,
And the encryptor is configured to encrypt the random number and the input values through a Rivest Shamir Adleman (RSA) algorithm. A user terminal for processing a password input from a user:
Display devices;
Storage media; And
A processor configured to control the display device and the storage medium,
The processor,
Displaying a virtual keypad including a plurality of button regions on the display device, wherein the arrangement of the virtual keypad is changed according to a random number generated in response to a first command signal;
Determine input values respectively corresponding to the selected button regions in response to user inputs for selecting the plurality of button regions with the password;
And distribute the first data based on the random number and the second data based on the input values to an external server and the storage medium. The method of claim 4, wherein
Further comprising a communicator configured to communicate with the external server via a network,
And the processor is configured to store the first data in the external server through the communicator and store the second data in the storage medium. The method of claim 5, wherein
The processor,
Access the external server in response to a second command signal to obtain the first data;
And restore the random number based on the obtained first data and restore the input values based on the second data read from the storage medium. The method of claim 6,
The processor,
And restore the password according to the restored random number and the restored input values. The method of claim 6,
The processor is configured to decode the obtained first data and to decode the read second data,
The decoded first data includes the reconstructed random number,
The decoded second data includes the restored input values. The method of claim 4, wherein
Further comprising a communicator configured to communicate with the external server via a network,
And the processor is configured to store the first data in the storage medium and store the second data in the external server via the communicator. A method for processing passwords input from a user:
Generating a random number in response to the first command signal;
Displaying a virtual keypad including a plurality of button regions on a display device, wherein the arrangement of the virtual keypad is changed according to the random number;
Determining input values respectively corresponding to the selected button areas in response to user inputs for selecting the plurality of button areas as the password; And
Distributing and storing the first data based on the random number and the second data based on the input values in an external server and an internal storage medium. The method of claim 10,
The distributed storage step,
Storing the first data on the external server via a network; And
Storing the second data on the internal storage medium. The method of claim 11,
In response to a second command signal, accessing the external server via the network to obtain the first data;
Restoring the random number based on the obtained first data;
Reading the second data from the storage medium; And
Restoring the input values based on the read second data. The method of claim 12,
Restoring the password according to the restored random number and the restored input values. A communicator;
A processor configured to communicate with a user terminal via the communicator; And
A database storing program codes to be executed by the user terminal,
The program codes,
First instructions for displaying a virtual keypad including a plurality of button regions on a display device of the user terminal, and for changing an arrangement of the virtual keypad according to a random number;
Second instructions for determining input values respectively corresponding to the selected button areas in response to user inputs for selecting the plurality of button areas as a password;
And third instructions for distributedly storing first data based on the random number and second data based on the input values in an external server of the user terminal and an internal storage medium of the user terminal. The method of claim 14,
The third instructions,
Instructions for storing the first data on the external server and storing the second data on the internal storage medium. The method of claim 15,
The program codes,
Access the external server to obtain the first data;
Restore the random number based on the obtained first data;
Read the second data from the storage medium;
And fourth instructions for restoring the input values based on the read second data. The method of claim 16,
The program codes,
And fifth instructions for restoring the password according to the restored random number and the restored input values.

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