KR101480889B1 - Virtual keyboard generating device and method for user authentication - Google Patents

Abstract

An apparatus and method for generating a virtual keyboard for user authentication are disclosed. In the embodiments of the present invention, when a virtual keyboard call request for user authentication is transmitted from a client terminal, a plurality of plain text values corresponding to a plurality of keypads constituting a virtual keyboard are generated, The virtual keyboard data is generated by performing predetermined data scrambling and encryption, and the virtual keyboard data is transmitted to the client terminal, thereby enhancing security in the user authentication process using the virtual keyboard.

Description

TECHNICAL FIELD [0001] The present invention relates to a virtual keyboard generating apparatus and method for authenticating a user,

Embodiments of the present invention relate to techniques for generating a virtual keyboard used for user authentication and transmitting it to a client terminal.

2. Description of the Related Art In recent years, a variety of microprocessor-based terminal devices such as a desktop computer, a smart phone, and a tablet PC have become popular, and various functions that can be utilized in such terminal devices have been proposed.

In particular, recently, as a communication environment enabling the Internet anywhere has been established, services are being launched that allow the terminal to provide convenience of the user online.

As a variety of terminal equipments are being widely used and online environments are being established, services for supporting users to perform internet banking or online settlement using terminal equipments are being released, .

In the online-based Internet banking or payment service, the user authentication process is one of the most important issues. In general, in the process of performing the user authentication, a procedure for allowing the user to input a password registered in advance in the terminal machine is included have.

Such a user authentication process is normally performed when the user inputs a password to his terminal device for user authentication, the terminal device transmits the password to the server for user authentication, and the password is matched with the registered password in the server It is determined that the user is an authorized user.

At this time, in order to prevent the password from being exposed to a third party in the process of obtaining a password from the terminal, the server transmits virtual keyboard data for inputting a password to the terminal of the user, When the virtual keyboard data is received, the user's terminal machine outputs a virtual keyboard for inputting a password on the screen based on the virtual keyboard data, so that the user can input the password by pressing the keypad on the virtual keyboard.

However, if a predetermined security process is not performed on the virtual keyboard, such as encrypting text values mapped to keypads on the virtual keyboard, the password is transmitted from the terminal to the server, There is a risk that the password will be exposed by hackers.

Therefore, in connection with a virtual keyboard for user authentication, there is a need for research on minimizing information exposure during data input and transmission using the virtual keyboard.

In the embodiments of the present invention, when a virtual keyboard call request for user authentication is transmitted from a client terminal, a plurality of plain text values corresponding to a plurality of keypads constituting a virtual keyboard are generated, The virtual keyboard data is generated by performing predetermined data scrambling and encryption, and the virtual keyboard data is transmitted to the client terminal, thereby enhancing security in the user authentication process using the virtual keyboard.

The apparatus for generating a virtual keyboard for user authentication according to an embodiment of the present invention includes a plurality of keypads configuring a virtual keyboard in response to the virtual keyboard call request when a virtual keyboard call request for inputting data for user authentication is transmitted from a client terminal, Generating a plurality of plaintext text values corresponding to a plurality of plaintext text values, generating a textual array composed of a plurality of random values, inserting each of the plaintext text values at a first position on the textual array, An encryption unit for generating an encryption key for data encryption and encrypting the plurality of mixed text arrays with the encryption key, a virtual keyboard image for expressing the plurality of keypads, And the corresponding plaintext text values A mapping unit for mapping the plurality of keypads and the encrypted plurality of mixed text arrangements on the virtual keyboard image according to a plurality of keypads and a plurality of mixed text arrangements and the virtual keyboard image, And a transmitting unit for transmitting the virtual keyboard data to the client terminal by generating virtual keyboard data including mapping information between the encrypted plurality of mixed text arrays.

A method for generating a virtual keyboard for user authentication according to an exemplary embodiment of the present invention is a method for generating a virtual keyboard in response to a virtual keyboard call request for inputting data for user authentication from a client terminal, Generating a plurality of plaintext text values corresponding to keypads of the plurality of random text values, generating a textual array composed of a plurality of random values, inserting each of the plurality of plaintext text values at a first location on the textual array, Generating an encryption key for data encryption, encrypting the plurality of mixed text arrays with the encryption key, generating a virtual keyboard image for expressing the plurality of keypads, A correspondence relationship between the plurality of plaintext text values Mapping the encrypted plurality of mixed text arrangements to the plurality of keypads and the encrypted plurality of text arrangements on the virtual keyboard image, and transmitting the encrypted plurality of mixed text arrangements and the virtual keyboard image, Generating virtual keyboard data composed of mapping information between a plurality of mixed text arrays, and transmitting the virtual keyboard data to the client terminal.

In the embodiments of the present invention, when a virtual keyboard call request for user authentication is transmitted from a client terminal, a plurality of plain text values corresponding to a plurality of keypads constituting a virtual keyboard are generated, The virtual keyboard data is generated by performing predetermined data scrambling and encryption, and the virtual keyboard data is transmitted to the client terminal, thereby enhancing security in the user authentication process using the virtual keyboard.

1 is a system conceptual diagram schematically showing an overall system for explaining a virtual keyboard generating apparatus for user authentication according to an embodiment of the present invention.
FIG. 2 and FIG. 3 are views showing an example of a virtual keyboard for explaining a virtual keyboard generating apparatus for user authentication according to an embodiment of the present invention.
FIG. 4 is a block diagram of a virtual keyboard generating apparatus for user authentication according to an embodiment of the present invention. Referring to FIG.
5 is a flowchart illustrating a method of generating a virtual keyboard for user authentication according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, 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 this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

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

1 is a system conceptual diagram schematically showing an overall system for explaining a virtual keyboard generating apparatus for user authentication according to an embodiment of the present invention.

FIG. 1 shows a virtual keyboard generating apparatus 110 for user authentication and a client terminal 120.

First, when a user of the client terminal 120 attempts to input a password to perform online settlement using the client terminal 120, the client terminal 120 transmits a password to the virtual keyboard generating device 110 for user authentication, A virtual keyboard call request for data input for authentication can be transmitted.

In this case, when the virtual keyboard call request is transmitted from the client terminal 120, the virtual keyboard generating device for user authentication 110 generates a plurality of virtual keyboards corresponding to the plurality of keypads constituting the virtual keyboard You can generate plain text values.

Then, the user authentication virtual keyboard generating apparatus 110 generates a text array composed of a plurality of random values, inserts each of the plurality of plain text values into a first position on the text arrangement, Can be generated.

For example, the virtual keyboard generating device for user authentication 110 may generate a text array of '20140306QWEADF' as a text array composed of the plurality of random values, and may generate a plain text value of any one of the plurality of plain text values Quot; 1 ", and the first position is referred to as the fifth digit in the text arrangement, the virtual keyboard generating device 110 for user authentication converts one of the plaintext text values' 1 'into the text array' 20140306QWEADF 'To generate a mixed text array called' 201410306QWEADF '.

In this manner, the virtual keyboard generating device for user authentication 110 can generate a plurality of mixed text arrays by inserting each of the plurality of plain text values into the fifth place in the text arrangement.

When the plurality of mixed text arrays are generated, the virtual keyboard generating device for user authentication 110 may generate an encryption key for data encryption and encrypt each of the plurality of mixed text arrays with the encryption key.

Then, the virtual keyboard generating device 110 for user authentication generates a virtual keyboard image for expressing the plurality of keypads, and generates a virtual keyboard image for expressing the plurality of keypads and the plurality of plain text values according to a correspondence relationship between the plurality of keypads and the plurality of plain- And map the encrypted plurality of mixed text arrangements to the plurality of keypads on the image.

For example, a plaintext text value of '1' is generated as a plaintext text value corresponding to a keypad of '1' on a virtual keyboard, and '20140306QWEADF', which is a text array of plaintext text values of ' 'Is inserted into the fifth digit of the virtual keyboard, and the mixed text array generated by encrypting with the encryption key is' ADFSAASDFCVDSAFE', the virtual keyboard generating device for user authentication 110 generates a virtual keyboard for the keypad '1' You can map an encrypted mixed text array called 'ADFSAASDFCVDSAFE'.

When the plurality of keypads and the encrypted plurality of mixed text arrays are mapped on the virtual keyboard image, the virtual keyboard generating device for user authentication 110 generates a plurality of mixed text arrays and the virtual keyboard image And virtual keyboard data composed of the mapping information between the plurality of keypads and the plurality of encrypted mixed text arrays, and transmit the virtual keyboard data to the client terminal 120. [

At this time, when the virtual keyboard data is received, the client terminal 120 can support a user to input a password or the like by outputting a virtual keyboard on the screen based on the virtual keyboard data.

2 shows an example of a virtual keyboard that is output through the client terminal 120. In FIG.

2, when the virtual keyboard 210 is displayed on the client terminal 120, the user of the client terminal 120 may apply a touch input or a mouse pointer input on the virtual keyboard 210 , A password, and the like.

At this time, when the user applies the virtual keyboard input to the keypad 211 of '1' among the plurality of keypads outputted through the virtual keyboard 210, the client terminal 120 refers to the virtual keyboard data, ADFSAASDFCVDSAFE ', which is an encrypted mixed text array mapped to the keypad 211 of' 1 ', to the virtual keyboard generating device 110 for user authentication.

At this time, when the encrypted mixed text array called 'ADFSAASDFCVDSAFE' is transmitted from the client terminal 120, the virtual keyboard generating device for user authentication 110 transmits at least one of a plurality of keypads on the virtual keyboard 210 May generate an event generation command for generating an animation event in which the randomly selected at least one keypad is selected on the virtual keyboard 210 image at random.

The virtual keyboard generating device 110 for user authentication may then send the event generating command to the client terminal 120 at which time the client terminal 120 may receive the randomly selected at least one An animation event in which the keypad of the keypad is selected can be output.

3, the client terminal 120 transmits an encrypted mixture of 'ADFSAASDFCVDSAFE', which is mapped to the keypad 211 '1' to the virtual keyboard generating device 110 for user authentication, The virtual keyboard generating device 110 for user authentication randomly selects a keypad of '2', 'D', 'H', and 'C' The client terminal 120 may generate an event generation command for generating an animation event in which a keypad called 'D', 'H', or 'C' is selected and transmit the event generation command to the client terminal 120, An animation event may be generated in which a keypad of '2', 'D', 'H', and 'C' is selected on the virtual keyboard 210 image as shown in FIG.

Accordingly, even if the user of the client terminal 120 applies a virtual keyboard input to the keypad of '1' on the virtual keyboard 210, the animation events output through the actual screen are '2', 'D' , And 'C' are selected as dummy events, the actual keypad on the virtual keyboard 210 input by the user may not be easily exposed to the third party.

The virtual keyboard generating device 110 for user authentication performs an operation for generating the dummy event each time a user applies one virtual keyboard input to the client terminal 120, It is possible to prevent exposure to a third party.

In addition to performing an operation for generating a dummy event in advance when an encrypted mixed text array such as 'ADFSAASDFCVDSAFE' is received from the client terminal 120, the virtual keyboard generating apparatus for user authentication 110, Values can be regenerated to regenerate a text array composed of the regenerated plurality of random values.

For example, the virtual-keyboard generating apparatus for user authentication 110 reproduces a plurality of separate random values different from '20140306QWEADF', which is the text array that was generated previously, and generates a text array '20140306QWERTY' Can be regenerated.

Then, the virtual keyboard generating device for user authentication 110 transmits the plurality of plain text values corresponding to the plurality of keypads constituting the virtual keyboard 210 to the first position on the regenerated text array '20140306QWERTY' To reproduce a plurality of mixed text arrays.

At this time, the virtual keyboard generating apparatus for user authentication 110 changes the first position to another position other than the fifth position used before, and then converts the plurality of plain text values into the regenerated text array '20140306QWERTY' It can be inserted at the changed position.

In this case, when the first position is changed to the third digit, the mixed text array for the plaintext text value of '1' among the plurality of plain text values is inserted at the third digit of '20140306QWERTY', so '201140306QWERTY' .

Thus, when the plurality of mixed text arrays are regenerated, the virtual keyboard generating device for user authentication 110 can re-encrypt the regenerated plurality of mixed text arrays with the encryption key.

For example, a result value obtained by re-encrypting '201140306QWERTY', which is a mixed text array for plain text value '1' among the plurality of plain text values, based on the encryption key may be 'TDASADFASDFASDFA'.

When the re-encryption of the regenerated plurality of mixed text arrays is completed, the virtual keyboard generating device for user authentication 110 generates a virtual keyboard for user authentication based on the correspondence between the plurality of keypads and the plurality of plain text values, And may map the plurality of re-encrypted mixed text arrangements with the plurality of keypads on the image.

Then, the virtual keyboard generating device 110 for user authentication is configured to generate a plurality of virtual keyboards, each of which is composed of a plurality of the re-encrypted mixed text arrays, and a mapping information between the plurality of keypads and the re- Update data may be generated and the virtual keyboard update data may be transmitted to the client terminal 120.

At this time, when the virtual keyboard update data is received, the client terminal 120 updates the virtual keyboard data stored in the client terminal 120 based on the virtual keyboard update data, The virtual keyboard 210 can be regenerated.

Accordingly, the encrypted mixed text array mapped to the keypad 211 of '1' among the plurality of keypads on the virtual keyboard 210 output on the client terminal 120 was initially 'ADFSAASDFCVDSAFE' Since the virtual keyboard update data is received from the virtual keyboard generating device 110 for user authentication by applying the virtual keyboard input to the keypad 211 of '1' on the keyboard 210, The encrypted mixed text array that was mapped can be changed to 'TDASADFASDFASDFA'.

That is, each time the virtual keyboard input data based on the virtual keyboard input is transmitted one by one from the client terminal 120 to the virtual keyboard generating device 110 for user authentication, the virtual keyboard generating device 110 for encrypting, which is mapped to the plurality of keypads on the virtual keyboard 210, The virtual keyboard input data transmitted from the client terminal 120 to the virtual keyboard generating device 110 for user authentication is changed each time the hacker 120 is changed, Even if the virtual keyboard input data is exposed in the middle, the hacker can not easily extract the plain text value from the virtual keyboard input data.

Up to now, a process of generating virtual keyboard data for the client terminal 120 by the virtual keyboard generating device 110 for user authentication has been described.

Hereinafter, a process of performing user authentication by the virtual keyboard generating device 110 for user authentication based on the virtual keyboard input data transmitted from the client terminal 120 will be described.

After the virtual keyboard generating device 110 for user authentication first transmits the virtual keyboard data to the client terminal 120 as in the above embodiment, The virtual keyboard generating device 110 for user authentication transmits an encrypted mixed text array called 'ADFSAASDFCVDSAFE' which is mapped to the keypad 211 of '1' among the keypads to the virtual keyboard generating device 110 for user authentication, May generate '201410306QWEADF' by decrypting an encrypted mixed text array called 'ADFSAASDFCVDSAFE' based on the encryption key.

Then, the virtual keyboard generating apparatus 110 for user authentication can extract a plaintext text value '1' inserted at the fifth position from the decoded mixed text array '201410306QWEADF'.

After the plaintext text value of '1' is extracted and the virtual keyboard generating device for user authentication 110 transmits the virtual keyboard update data to the client terminal 120, Referred to as " TDASADFASDFASDFA ", which is mapped from the client terminal 120 to the keypad 211 of '1', by re-applying the virtual keyboard input to the keypad 211 of the plurality of keypads on the keypad 210 When the mixed text array is transmitted to the virtual keyboard generating device 110 for user authentication, the virtual keyboard generating device for user authentication 110 decrypts the encrypted mixed text array called 'TDASADFASDFASDFA' based on the encryption key, and generates' 201140306QWERTY Can be generated.

Then, the virtual keyboard generating device 110 for user authentication can extract a plaintext text value of '1' inserted at the third position, which is the changed first position, from the decoded mixed text array '201140306QWERTY' .

In this manner, the virtual keyboard generating device 110 for user authentication can extract the plain text value one by one from the virtual keyboard input data, one by one, each time the virtual keyboard input data is transmitted from the client terminal 120, When the extraction of the value is completed, the user terminal 120 can perform user authentication based on the extracted plain text value.

FIG. 4 is a block diagram of a virtual keyboard generating apparatus for user authentication according to an embodiment of the present invention. Referring to FIG.

4, an apparatus for generating a virtual keyboard 410 for user authentication according to an embodiment of the present invention includes a generating unit 411, a mixing unit 412, an encryption unit 413, a mapping unit 414, (415).

When a virtual keyboard call request for inputting data for user authentication is transmitted from the client terminal 430, the generation unit 411 generates a plurality of plaintexts corresponding to a plurality of keypads constituting a virtual keyboard in response to the virtual keyboard call request Create text values.

The mixing unit 412 generates a text array composed of a plurality of random values and inserts each of the plurality of plain text values into a first position on the text array to generate a plurality of mixed text arrays.

The encryption unit 413 generates an encryption key for data encryption and encrypts the plurality of mixed text arrays with the encryption key.

The mapping unit 414 generates a virtual keyboard image for expressing the plurality of keypads, and displays the virtual keyboard image on the virtual keyboard image according to a correspondence between the plurality of keypads and the plurality of plain text values. And maps the plurality of encrypted mixed text arrays.

The transmitting unit 415 generates virtual keyboard data composed of the encrypted plurality of mixed text sequences, the virtual keyboard image, and mapping information between the plurality of keypads and the encrypted plurality of mixed text sequences, And transmits the virtual keyboard data to the client terminal 430.

According to an embodiment of the present invention, the apparatus for generating a virtual keyboard 410 for user authentication may further include a decryption unit 416, an extraction unit 417, and a user authentication unit 418.

The decryption unit 416 receives at least one of the encrypted plurality of mixed text arrays mapped to the plurality of keypads based on the virtual keyboard input of the user of the client terminal 430 from the client terminal 430 When the text arrangement is transmitted as virtual keyboard input data, the at least one mixed text arrangement is decoded based on the encryption key.

The extraction unit 417 extracts at least one plaintext text value inserted in the first position from the decoded mixed text array.

The user authentication unit 418 performs user authentication on the client terminal based on the extracted at least one plaintext text value.

In addition, according to an embodiment of the present invention, the mixing unit 412 receives, from the client terminal 430, the encrypted (encrypted) keypad mapped to the plurality of keypads based on the virtual keyboard input of the user of the client terminal 430 Each time a mixed text array of a plurality of mixed text arrays is transmitted as virtual keyboard input data, the plurality of random values are regenerated to regenerate the text array composed of the regenerated plurality of random values, The plaintext text values of each of the plurality of mixed text arrangements may be inserted at the first position on the regenerated text arrangement to regenerate the plurality of mixed text arrangements.

According to an embodiment of the present invention, the mixing unit 412 may change the first position every time the one mixed text array is transmitted from the client terminal 430 as the virtual keyboard input data, Each of the plurality of plaintext text values may be inserted into the modified first location on the regenerated text arrangement.

The encryption unit 413 may re-encrypt the regenerated plurality of mixed text arrays with the encryption key, and the mapping unit 414 may re-encrypt the plurality of regenerated mixed text arrays according to the correspondence between the plurality of keypads and the plurality of plaintext text values. And may map the plurality of re-encrypted mixed text arrangements to the plurality of keypads on the virtual keyboard image.

Then, the transmitting unit 415 generates virtual keyboard update data composed of the re-encrypted plurality of mixed text arrays and the mapping information between the plurality of keypads and the re-encrypted plurality of mixed text arrays And transmit the virtual keyboard update data to the client terminal 430. [

At this time, according to an embodiment of the present invention, when the virtual keyboard update data is received, the client terminal 430 updates the virtual keyboard data stored in the client terminal 430 based on the virtual keyboard update data And then generate the virtual keyboard based on the updated virtual keyboard data.

According to an embodiment of the present invention, the virtual keyboard generating device 410 for user authentication may further include an event command generating unit 419 and an event command transmitting unit 420.

The event command generation unit 419 generates an event command from the client terminal 430 based on the virtual keyboard input of the user of the client terminal 430 Generates at least one randomly selected keypad of the plurality of keypads each time a mixed text array of virtual keyboard input data is transmitted as virtual keyboard input data to generate an animation event in which at least one randomly selected keypad is selected on the virtual keyboard image And generates an event generation command for instructing the generation of the event.

The event command transmission unit 420 transmits the event generation command to the client terminal 430 and controls the client terminal 430 to output an animation event in which at least one randomly selected keypad is selected on the virtual keyboard image .

The virtual keyboard generating device 410 for user authentication according to an embodiment of the present invention has been described above with reference to FIG. Here, the virtual keyboard generating device 410 for user authentication according to an embodiment of the present invention may correspond to the configuration of the virtual keyboard generating device 110 for user authentication described with reference to FIG. 1, A description thereof will be omitted.

5 is a flowchart illustrating a method of generating a virtual keyboard for user authentication according to an embodiment of the present invention.

In step S510, when a virtual keyboard call request for data input for user authentication is transmitted from the client terminal, a plurality of plain text values corresponding to a plurality of keypads constituting the virtual keyboard are generated in response to the virtual keyboard call request do.

In step S520, a text array composed of a plurality of random values is generated, and each of the plurality of plain text values is inserted into a first position on the text arrangement to generate a plurality of mixed text arrangements.

In step S530, an encryption key for data encryption is generated and the plurality of mixed text arrays are encrypted with the encryption key.

In step S540, a virtual keyboard image for expressing the plurality of keypads is generated, and the plurality of keypads and the plurality of keypads are displayed on the virtual keyboard image according to the correspondence between the plurality of keypads and the plurality of plain text values. And maps a plurality of encrypted mixed text arrays.

In step S550, virtual keyboard data including the encrypted plurality of mixed text arrays, the virtual keyboard image, and the mapping information between the plurality of keypads and the encrypted plurality of mixed text arrays is generated, And transmits the keyboard data to the client terminal.

According to an embodiment of the present invention, the method for generating a virtual keyboard for user authentication further comprises the step of, after step S550, mapping the virtual keyboard to the plurality of keypads based on a virtual keyboard input of the user of the client terminal, Decrypting the at least one mixed text array based on the encryption key if at least one mixed text array of the encrypted plurality of mixed text arrangements is transmitted as virtual keyboard input data, Extracting at least one plaintext text value inserted at the first location from the mixed text array of the at least one plaintext text value and performing user authentication for the client terminal based on the extracted plaintext text value can do.

According to an embodiment of the present invention, the method for generating a virtual keyboard for user authentication may further include, after step S550, mapping the virtual keyboard to the plurality of keypads based on a virtual keyboard input of the user of the client terminal, Each time a mixed text array of the encrypted plurality of mixed text arrays is transmitted as virtual keyboard input data, the plurality of random values are regenerated to generate the text array composed of the regenerated plurality of random values Re-encrypting the plurality of mixed text arrangements with the encryption key by inserting each of the plurality of plaintext text values into the first location on the regenerated text array after regenerating the plurality of mixed text arrangements; Wherein the plurality of keypads and the plurality of plaintexts Mapping the re-encrypted plurality of mixed text arrangements to the plurality of keypads on the virtual keyboard image according to a correspondence between values of the plurality of keypads and the plurality of mixed text arrangements, Generating virtual keyboard update data including mapping information between the plurality of re-encrypted mixed text arrays, and transmitting the virtual keyboard update data to the client terminal.

According to an embodiment of the present invention, when the virtual keyboard update data is received, the client terminal updates the virtual keyboard data stored in the client terminal based on the virtual keyboard update data, The virtual keyboard can be generated based on the virtual keyboard data.

In this case, according to an embodiment of the present invention, the step of regenerating the plurality of mixed text arrangements may include the step of, when each of the mixed text arrays is transmitted from the client terminal to the virtual keyboard input data, To insert each of the plurality of plaintext text values into the modified first location on the regenerated text arrangement.

According to an embodiment of the present invention, the method for generating a virtual keyboard for user authentication may further include, after step S550, mapping the virtual keyboard to the plurality of keypads based on a virtual keyboard input of the user of the client terminal, Wherein each time a mixed text array of the encrypted plurality of mixed text arrays is transmitted as virtual keyboard input data, at least one of the plurality of keypads is randomly selected, Generating an event generation command for generating an animation event in which at least one randomly selected keypad is selected and transmitting the event generation command to the client terminal so that the client terminal displays the randomly selected at least one Key of And controlling the pad to output the selected animation event.

The method for generating a virtual keyboard for user authentication according to an embodiment of the present invention has been described above with reference to FIG. Here, the method for generating a virtual keyboard for user authentication according to an embodiment of the present invention may correspond to the configuration of operations of the virtual keyboard generating apparatuses 110 and 410 for user authentication described with reference to FIGS. 1 to 4, A detailed description thereof will be omitted.

The method for generating a virtual keyboard for user authentication according to an embodiment of the present invention may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

As described above, the present invention has been described with reference to particular embodiments, such as specific elements, and specific embodiments and drawings. However, it should be understood that the present invention is not limited to the above- And various modifications and changes may be made thereto by those skilled in the art to which the present invention pertains.

Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

110: Virtual keyboard generating device for user authentication
120:
410: Virtual keyboard generating device for user authentication
411: Generator 412: Mixer
413: Encryption unit 414:
415: Transmitting unit 416: Decoding unit
417 extracting unit 418 user authentication unit
419: Event command generation unit 420: Event command transmission unit
430:

Claims (13)

A generating unit for generating a plurality of plaintext text values corresponding to a plurality of keypads constituting a virtual keyboard in response to the virtual keyboard calling request, when a virtual keyboard calling request for inputting data for user authentication is transmitted from a client terminal;
A mixing unit for generating a text array composed of a plurality of random values and inserting each of the plurality of plain text values into a first position on the text arrangement to generate a plurality of mixed text arrangements;
An encryption unit for generating an encryption key for data encryption and encrypting the plurality of mixed text arrays with the encryption key;
Generating a virtual keyboard image for expressing the plurality of keypads, and generating a virtual keyboard image for representing the plurality of keypads and the encrypted plurality of blends on the virtual keyboard image according to a correspondence between the plurality of keypads and the plurality of plain- A mapping unit for mapping text arrays;
Generating virtual keyboard data composed of the encrypted plurality of mixed text sequences, the virtual keyboard image, and mapping information between the plurality of keypads and the encrypted plurality of text arrangements, A transmitting unit for transmitting to the terminal;
When at least one mixed text array of the encrypted plurality of mixed text arrays mapped to the plurality of keypads based on the virtual keyboard input of the user of the client terminal is transmitted from the client terminal to the virtual keyboard input data A decryption unit for decrypting the at least one mixed text array based on the encryption key;
An extraction unit for extracting at least one plaintext text value inserted at the first location from the decoded mixed text arrangement; And
A user authentication unit for performing user authentication for the client terminal based on the extracted at least one plaintext text value,
And a virtual keyboard for user authentication. delete The method according to claim 1,
The mixing section
Wherein a mixed text array of the encrypted plurality of mixed text arrays mapped to the plurality of keypads based on the virtual keyboard input of the user of the client terminal is transmitted from the client terminal to the virtual keyboard input data Each of the plurality of plain text values is inserted into the first position on the regenerated text array to regenerate the plurality of random values to regenerate the text arrangement comprising the regenerated plurality of random values, Lt; RTI ID = 0.0 > text < / RTI &
The encryption unit
Encrypting the regenerated plurality of mixed text sequences with the encryption key,
The mapping unit
Mapping the re-encrypted plurality of mixed text arrays with the plurality of keypads on the virtual keyboard image according to a correspondence between the plurality of keypads and the plurality of plain text values,
The transmitter
And generates virtual keyboard update data composed of the re-encrypted plurality of mixed text arrays and mapping information between the plurality of keypads and the plurality of re-encrypted mixed text arrays, A virtual keyboard generating unit for generating a virtual keyboard; The method of claim 3,
The client terminal
Wherein the virtual keyboard data updating unit updates the virtual keyboard data stored in the client terminal based on the virtual keyboard update data and generates the virtual keyboard based on the updated virtual keyboard data, A virtual keyboard generating device. The method of claim 3,
The mixing section
Each time the mixed text array is transmitted from the client terminal to the virtual keyboard input data, the first position is changed so that each of the plurality of plain text values is changed to the changed first position on the regenerated text array A virtual keyboard generating device for user authentication to be inserted. The method according to claim 1,
Wherein a mixed text array of the encrypted plurality of mixed text arrays mapped to the plurality of keypads based on the virtual keyboard input of the user of the client terminal is transmitted from the client terminal to the virtual keyboard input data Generating an event generation command for randomly selecting at least one keypad among the plurality of keypads at a time to generate an animation event in which at least one randomly selected keypad is selected on the virtual keyboard image, ; And
And an event command transmission unit for transmitting the event generation command to the client terminal and controlling the client terminal to output an animation event in which the randomly selected at least one keypad is selected on the virtual keyboard image,
Wherein the virtual keyboard is a virtual keyboard. Generating a plurality of plaintext text values corresponding to a plurality of keypads constituting a virtual keyboard in response to the virtual keyboard calling request, when a virtual keyboard calling request for data input for user authentication is transmitted from the client terminal;
Creating a text array comprising a plurality of random values and inserting each of the plurality of plaintext text values at a first location on the text arrangement to generate a plurality of mixed text arrangements;
Encrypting the plurality of mixed text arrays with the encryption key by generating an encryption key for data encryption;
Generating a virtual keyboard image for expressing the plurality of keypads, and generating a virtual keyboard image for representing the plurality of keypads and the encrypted plurality of blends on the virtual keyboard image according to a correspondence between the plurality of keypads and the plurality of plain- Mapping textual arrays;
Generating virtual keyboard data composed of the encrypted plurality of mixed text sequences, the virtual keyboard image, and mapping information between the plurality of keypads and the encrypted plurality of text arrangements, To a terminal;
When at least one mixed text array of the encrypted plurality of mixed text arrays mapped to the plurality of keypads based on the virtual keyboard input of the user of the client terminal is transmitted from the client terminal to the virtual keyboard input data Decrypting the at least one mixed text array based on the encryption key;
Extracting at least one plaintext text value inserted at the first location from the decoded at least one mixed text array; And
Performing user authentication on the client terminal based on the extracted at least one plaintext text value
And generating a virtual keyboard for user authentication. delete 8. The method of claim 7,
Wherein a mixed text array of the encrypted plurality of mixed text arrays mapped to the plurality of keypads based on the virtual keyboard input of the user of the client terminal is transmitted from the client terminal to the virtual keyboard input data Each of the plurality of plain text values is inserted into the first position on the regenerated text array to regenerate the plurality of random values to regenerate the text arrangement comprising the regenerated plurality of random values, Regenerating the mixed text arrangements of;
Re-encrypting the regenerated plurality of mixed text sequences with the encryption key;
Mapping the re-encrypted plurality of mixed text arrays with the plurality of keypads on the virtual keyboard image according to a correspondence between the plurality of keypads and the plurality of plain text values; And
And generates virtual keyboard update data composed of the re-encrypted plurality of mixed text arrays and mapping information between the plurality of keypads and the plurality of re-encrypted mixed text arrays, ≪ / RTI >
And generating a virtual keyboard for user authentication. 10. The method of claim 9,
The client terminal
Wherein the virtual keyboard data updating unit updates the virtual keyboard data stored in the client terminal based on the virtual keyboard update data and generates the virtual keyboard based on the updated virtual keyboard data, How to create a virtual keyboard. 10. The method of claim 9,
Wherein regenerating the plurality of mixed text arrangements comprises:
Each time the mixed text array is transmitted from the client terminal to the virtual keyboard input data, the first position is changed so that each of the plurality of plain text values is changed to the changed first position on the regenerated text array A method for creating a virtual keyboard for user authentication to be inserted. 8. The method of claim 7,
Wherein a mixed text array of the encrypted plurality of mixed text arrays mapped to the plurality of keypads based on the virtual keyboard input of the user of the client terminal is transmitted from the client terminal to the virtual keyboard input data Generating an event generation command for randomly selecting at least one keypad of the plurality of keypads each time to generate an animation event in which the randomly selected at least one keypad is selected on the virtual keyboard image; And
Transmitting the event generation command to the client terminal and controlling the client terminal to output an animation event in which the randomly selected at least one keypad is selected on the virtual keyboard image
And generating a virtual keyboard for user authentication. A computer-readable recording medium storing a program for performing the method of any one of claims 7 to 9.

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