KR101505295B1 - Key input method and apparatus - Google Patents

Abstract

A key input method and apparatus therefor are disclosed. A key input method is to output a virtual keypad in which key layouts of at least two rows are mutually changed in a basic key arrangement, receive a key through the output virtual keypad, and then recognize the password by combining the inputted keys.

Description

[0001] The present invention relates to a key input method and apparatus,

[0001] The present invention relates to a key input method and, more particularly, to a method of inputting a key by using a virtual keypad in which a key arrangement of at least two rows in a basic key arrangement is mutually changed each time each digit of a password is input, And a key input method and apparatus thereof.

Computers, smart phones, and the like. As the Internet environment develops, it becomes common to input passwords and various personal information when using mobile banking, e-commerce, various content providing sites, and the like. In addition, hacking techniques for abusing individual personal information and personal information are increasing day by day.

Currently, a method for arbitrarily changing the position of each key by adding spaces to the keypad when entering a password or an authorized certificate when accessing various financial security sites is widely used. As shown in FIG. 1, the mtranskey keypad input method is a method of arranging blanks at arbitrary positions at every authentication and changing the key arrangement so that the keys are not arranged at fixed positions. As a result, when the user inputs a password at the time of authentication, the key input position is changed every time, thereby preventing the password from being exposed from the coordinate attack.

According to the MTRANSKEY input method, in the case of the number 1, it is placed in the first row first column or in the first row second column. That is, the probability that the number 1 is placed in the first row and the first row is 10/11, and the probability of being placed in the first row and the second row is 1/11. Table 1 below shows placement probabilities of the respective keys arranged in the first row and the second row according to their placement positions and placement positions, respectively.

key Column 1 Column 2 Column 3 Column 4 Column 5 Column 6 Column 7 Column 8 Column 9 10 columns Column 11 '1', 'q' 10/11 1/11 0 0 0 0 0 0 0 0 0 '2', 'w' 0 9/11 2/11 0 0 0 0 0 0 0 0 '3', 'e' 0 0 8/11 3/11 0 0 0 0 0 0 0 '4', 'r' 0 0 0 7/11 4/11 0 0 0 0 0 0 '5', 't' 0 0 0 0 6/11 5/11 0 0 0 0 0 '6', 'y' 0 0 0 0 0 5/11 6/11 0 0 0 0 '7', 'u' 0 0 0 0 0 0 4/11 7/11 0 0 0 '8', 'i' 0 0 0 0 0 0 0 3/11 8/11 0 0 '9', 'o' 0 0 0 0 0 0 0 0 2/11 9/11 0 '0', 'p' 0 0 0 0 0 0 0 0 0 1/11 10/11

Referring to Table 1, it can be seen that the placement probabilities of the m trans-keys are different from each other according to the arrangement positions of the keys. Therefore, it is necessary to study the key input method which has more security.

The present invention is characterized in that a key placed in each column in a basic key arrangement is fixed and a key is input by changing key arrangements between (2 n-1) -th row and 2n-th row to provide a key input And to provide such a device.

It is another object of the present invention to provide a key input method capable of setting at least one key included in a virtual keypad as a cheat key and preventing a password from being leaked even when a password is inputted and a cheat key is input .

According to an aspect of the present invention, there is provided a method of inputting a key through a virtual keypad in which key arrangement of each column in a basic key arrangement is fixed, and key arrangements between (2n-1) rows and 2n rows are mutually changed .

According to an embodiment of the present invention, there is provided a method of transmitting a message comprising the steps of: (a) outputting a virtual keypad in which at least two rows of key arrangements are mutually changed in a basic key arrangement; (b) receiving a key via the virtual keypad; And (c) recognizing a password by combining the input key.

The step (a) is repeatedly performed for each digit of the password.

Wherein the virtual keypad comprises at least one cheat key,

The cheat key may be set among the keys included in the virtual keypad, and may be visually distinguished from other keys included in the virtual keypad.

In the step (c), the password may be recognized by excluding the cheat key among the input keys.

The primary key arrangement is a QWERTY key arrangement.

The step (a) is a step of mutually changing key arrangements of the (2n-1) th row and the 2n th (n is a natural number) row.

According to another aspect of the present invention, there is provided an apparatus capable of inputting a key through a virtual keypad in which a key arrangement of each column in a basic key arrangement is fixed and key arrangements between (2n-1) rows and 2n rows are mutually changed .

According to an embodiment of the present invention, there is provided an apparatus comprising: an output unit for outputting a virtual keypad in which key arrangements between at least two rows in a basic key arrangement are mutually changed; An input unit for receiving a key through the virtual keypad; And a control unit for recognizing a password by combining the input keys.

The control unit may control the virtual keypad, which is generated by mutually changing key arrangements of at least two rows in the basic key arrangement, through the output unit each time the password is input.

The controller may output the virtual keypad by changing the key arrangement of the (2n-1) th row and the (2n-1) th row in the basic key arrangement each time the password is input.

The control unit may divide the time information of the numeric key and the character key into the virtual keypad and output the divided time information through the output unit.

The control unit may determine at least one of the keys of the virtual keypad as a cheating key, wherein the cheating key is differentiated from other keys and output through the output unit.

The control unit may recognize the password by excluding the cheat key from the input keys and combining the input key.

And a setting unit configured to set the number of the cheating keys from the user. The controller may determine the cheating key by the number of the cheating keys set in the setting unit, and visually distinguish the cheating key on the virtual keypad.

The control unit may determine the cheat key among the keys included in at least the row whose key layout is changed and output the virtual keypad.

It is possible to provide a key input method and an apparatus thereof according to an embodiment of the present invention so that the key arrangement of each column in the basic key arrangement is fixed and the key arrangement between the (2n-1) th row and the 2n th column is mutually changed through the virtual keypad Key, so that the security according to the password input can be enhanced.

In addition, the present invention has an advantage in that at least one of the keys included in the virtual keypad is set as a trick key when inputting the number of digits of the password, and the password is prevented from being leaked to the hacking.

1 is a diagram illustrating a conventional key input method.
2 is a block diagram schematically illustrating an internal configuration of an input device according to an embodiment of the present invention;
3 shows a basic key arrangement according to an embodiment of the present invention.
FIG. 4 and FIG. 7 are views illustrating a screen outputting a virtual keypad according to an embodiment of the present invention; FIG.
FIG. 8 is a flowchart illustrating a key input method using an input device according to an embodiment of the present invention. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

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.

The present invention adopts a QWERTY key arrangement already familiar to a user as a basic key arrangement and sets keys included in each column of the basic key arrangement to be fixed when inputting each digit of the password (or input requiring authentication) 1) -th row and the 2n-th row are mutually changed, and a password can be inputted by using the virtual keypad.

Also, in order to enhance security, at least one of the keys included in the virtual keypad is determined to be a cheat key, and a cheat key is also input when a password is input, thereby preventing a password from being easily leaked to an input key leak due to hacking.

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

FIG. 2 is a block diagram schematically illustrating an internal configuration of an input device according to an embodiment of the present invention. FIG. 3 is a diagram illustrating a basic key arrangement according to an embodiment of the present invention. FIG. 4 and FIG. FIG. 2 is a diagram illustrating a screen outputting a virtual keypad according to an embodiment of the present invention. FIG.

2, the input device 200 includes an output unit 210, an input unit 215, a setting unit 220, a memory 225, and a control unit 230.

The output unit 210 is a means for outputting a virtual keypad for inputting a password under the control of the control unit 230. [

According to an embodiment of the present invention, the virtual keypad is a keypad in which a key arrangement between at least two rows in a QWERTY basic key arrangement is mutually changed.

The qwerty primary key arrangement is shown in Fig. In an embodiment of the present invention, it is assumed that the basic key arrangement is a QWERTY key arrangement. However, it is obvious that the present invention can be applied to all known key arrangements in addition to the QWERTY basic key arrangement.

As shown in FIG. 3, the virtual keypad may be output through the output unit 210 by visually separating the numeric key and the character key. For example, the numeric keys may be represented by a first color, and the character keys may be represented by a second color and output through the output 210. [

FIG. 4 illustrates a virtual keypad in which key arrangements between at least two rows in the basic key arrangement are mutually changed. As shown in FIG. 4, in the virtual keypad, the key arrangement of each column in the basic key arrangement may be fixed and the key arrangement of at least two rows may be mutually changed and arranged for each password input of each digit.

For example, the virtual keypad can be arranged by mutually changing the key arrangement between the (2n-1) row and the 2n (n is a natural number) row in the basic key arrangement. That is, when the first digit is input, the key arrangement of the first row and the second row is mutually changed (see FIG. 4), and the key arrangement of the third row and the fourth row is changed during the second digit input 5). Of course, as shown in FIG. 6, the key arrangement of the first row and the second row may be mutually changed for each digit input, and the key arrangement of the third row and the fourth row may be mutually changed to output the virtual keypad .

For example, with reference to FIG. 4, assume that the number or character to be input is "P ". In the basic key arrangement shown in FIG. 4, the key arrangement of each column is fixed, and a virtual keypad in which the key arrangement of the first row and the second row is changed can be output.

The virtual keypad may include at least one cheat key (see FIG. 7). Also, the cheat key may be output in the form of a dedicated screen for inputting the cheat key.

According to one embodiment of the present invention, the cheat key may be determined to be at least one of the keys included in the virtual keypad.

The visual information of the cheat key may be displayed separately from other keys in order to distinguish the cheat key from the other keys included in the virtual keypad.

The number of the cheating keys can be set by the user in advance through the setting unit 220 and the display format of the time information of the cheating key can also be set in advance by the user. The setting unit 220 will be described below.

For example, suppose the password that the user needs to enter is "soongsil". At this time, suppose that the trick key is determined to be "g" when the third character is input. The user will enter "soogngsil" as the password. That is, in addition to a character or a number input corresponding to an actual password, a cheat key is further input, so that it is advantageous that a password can not be easily confirmed only by a key distributed by hacking.

The input unit 215 is a means for receiving a key corresponding to a user input through the virtual keypad output through the output unit 210. [ The input unit 215 can output the key received from the user through the virtual keypad to the control unit 230. [

The setting unit 220 is a means for setting a setting condition for the virtual keypad according to an embodiment of the present invention. For example, the setting unit 220 can set the number of the cheating keys and the display format of the cheating key from the user.

In this specification, it is assumed that a setting condition for a cheat key is set by the user through the setting unit 220 in order to facilitate understanding and explanation. However, according to the setting conditions set by the administrator through the input device 200 It may be set automatically.

The memory 225 is a means for storing virtual keypad related information according to an embodiment of the present invention.

The control unit 230 may control the internal components (e.g., the output unit 210, the input unit 215, the setting unit 220, and the memory 225) of the input device 200 according to an embodiment of the present invention ).

In addition, when the user inputs a password for security, the control unit 230 may control the virtual keypad in which the key arrangement of at least two rows in the basic key arrangement is mutually changed each time the password is input for each digit.

For example, the control unit 230 can generate a virtual keypad by randomly changing key arrangements between at least two rows in a basic key arrangement using a basic key arrangement. That is, when inputting the first digits, the key arrangement of the first row and the second row in the basic key arrangement may be mutually changed so that a virtual keypad is generated and output through the output unit 210.

Also, when the second digit is input, the key arrangement of the third row and the fourth row in the basic key arrangement may be changed to control the virtual keypad to be generated through the output unit 210.

That is, the control unit 230 can control the key arrangement of at least two rows in the basic key arrangement to randomly generate a virtual keypad for each input of each digit of the password, and output it through the output unit 210 .

Also, the control unit 230 may determine that at least one of the keys included in the virtual keypad is a cheating key according to the setting condition set in the setting unit 220 and visually distinguish it from other keys.

The cheat key can be displayed on the virtual keypad when the password is input by the number of cheat keys set in the setting condition. Accordingly, the user can input the key including the number of digits of the password and the trick key.

Accordingly, when recognizing the password, the control unit 230 can recognize the password by excluding the cheating key in the process of combining the keys input through the virtual keypad by the input unit 215 and combining the input keys.

8 is a flowchart illustrating a key input method using an input device according to an embodiment of the present invention. Hereinafter, it is assumed that the user inputs a password for security, and the description will be focused on this.

In step 810, the input device 200 outputs a virtual keypad in which the key arrangement between at least two rows of the basic keypad is changed mutually to input the password of the user. Here, at least one key included in the virtual keypad may be displayed as a cheat key.

According to an embodiment of the present invention, the input device 200 can output the virtual keypad by changing the key arrangement of any one of the rows including the key corresponding to the password to be input and the adjacent rows.

For example, suppose you enter "S" in the QWERTY key array. The input device 200 can output the virtual keypad by mutually changing the key arrangement of the fourth term adjacent to the third row and the third row including "S " in the basic key arrangement. FIG. 5 shows an example of a screen outputting a virtual keypad in which the key arrangement of the third row and the fourth row in the QWERTY key arrangement is mutually changed.

As another example, assume that the user enters "O" in the password. The input device 200 can output the virtual keypad by mutually changing the key arrangement of the first row adjacent to the second row including "0 " in the basic key arrangement.

That is, according to the first embodiment, the key arrangement of the first row and the second row is changed every time the password is inputted in the basic key arrangement, and the key arrangement of the third row and the fourth row is mutually changed, Can be output.

The probability of alternating the first row and the second row and the key arrangement of the third row and the fourth row each time the password is input in the basic key arrangement is as shown in Table 1 below.

key 1 row 2 rows 3 rows 4 rows 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 1/2 1/2 / 0 0 q, w, e, r, t, y, u, i, o, p 1/2 1/2 / 0 0 a, s, d, f, g, h, j, k, l; 0 0 1/2 1/2 / z, x, c, v, b, n, m, 0 0 1/2 1/2 /

As described above, in the case where the key arrangement of the first row and the second row is mutually changed each time the password is input in the basic key arrangement and the key arrangement of the third row and the fourth row are mutually changed, the keys are arranged The probability is shown in Table 1. As described above, by changing the keys of the first row and the second row to each other, and changing the keys of the third row and the fourth row to each other to output the virtual keypad, even if the key inputted by hacking is leaked, There is an advantage in that it is not possible to know whether a row key is pressed, thereby increasing the safety even in the case of a coordinate attack.

번 패스워드를 인증해야 하며, 평균적으로

번 패스워드를 입력해야 인증에 성공하게 된다. 그러나, 현재는 보안상의 이유로 패스워드 입력의 경우 일반적으로 3회 내지 5회를 입력 시도하도록 설정되어 있으며, 그 이상 패스워드에 오류가 발생하는 경우, 자동으로 접속이 차단되고 있다.For example, suppose the password is "9476". The first number " 9 " of the password may be placed in either the first row or the second row, according to an embodiment of the present invention. As a result, the attacker will not know whether the user pressed the '9' or the 'o' key. Even if you hack the input key, the attacker can only guess that you hit either '9' or 'o'. Therefore, in order to guess the password of n (n is a natural number) digits and to succeed in authentication,

Password, and on average

You must enter the password in order to be successful. However, currently, for security reasons, in case of password input, it is generally set to try to input 3 to 5 times, and when an error occurs in the password more than that, the connection is automatically blocked.

According to another embodiment, in order to increase the security according to the key input, the input device 200 may determine at least one of the keys included in the virtual keypad as a cheat key, have.

In this way, when the trick key is displayed on the virtual keypad, the user can input the trick key one more time before and after inputting each digit of the password.

It is a matter of course that a plurality of trick key may be determined and displayed.

For example, suppose the user sets the password to 'cage1024'. The input device 200 can receive a key by outputting a virtual keypad in which key arrangements between at least two rows in the basic key arrangement are mutually changed each time the password is input. The input device 200 can determine the cheat key between 'cag' and 'e' and output the virtual keypad. As described above, the cheat key is set to one of the keys included in the virtual keypad, and is visually distinguished from other keys. Accordingly, the user can normally input the trick key through the output virtual keypad without having to memorize the trick key. For example, suppose the cheat key is set to 'n'.

The user inputs 'cagne 1024' as a pad word through the input device 200. Accordingly, even if the key inputted by the hacking is leaked, the attacker can recognize the password as 'cagne1024', thereby preventing the password from being leaked.

In step 815, the input device 200 receives a key via the virtual keypad.

Steps 810 to 815 are repeatedly performed for each digit of the password.

In step 820, the input device 200 recognizes the password by combining the input keys. The input device 200 can recognize the password by excluding the trick key among the input keys.

For example, assume that the password set by the user is 'cage1024'. As described above, it is assumed that the cheat key 'n' is determined between 'cag' and 'e', and the virtual keypad is output. The input device 200 can receive 'cagne 1024' as an input key.

Accordingly, the input device 200 can recognize the password 'cage 1024' by excluding the cheating key 'n' from the received 'cagne 1024' and combining input keys.

Meanwhile, the key input method according to the embodiment of the present invention may be implemented in a form of a program command that can be executed through various electronic information processing means, and may be recorded in a storage medium. The storage medium may include program instructions, data files, data structures, and the like, alone or in combination.

Program instructions to be recorded on the storage medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of software. Examples of storage media include magnetic media such as hard disks, floppy disks and magnetic tape, optical media such as CD-ROMs and DVDs, magneto-optical media such as floptical 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 devices for processing information electronically using an interpreter or the like, for example, a high-level language code that can be executed by a computer.

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.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

200: input device
210:
215:
220: Setting section
225: Memory
230:

Claims (18)

(a) outputting a virtual keypad in which at least two rows of key layouts are mutually changed in a basic key layout, the virtual keypad including at least one cheat key;
(b) receiving a key via the virtual keypad; And
(c) recognizing a password by excluding the cheat key among the input keys and combining the input key,
Wherein the cheat key is set among keys included in the virtual keypad. The method according to claim 1,
Wherein the step (a) is repeatedly performed for each digit of the password. delete delete The method according to claim 1,
Wherein the trick key is visually distinguished from other keys included in the virtual keypad. delete The method according to claim 1,
Wherein the primary key arrangement is a QWERTY key arrangement. 8. The method of claim 7, wherein step (a)
And the key arrangement of the (2n-1) th row and the 2n th (n is a natural number) row is mutually changed. A recording medium on which a program for performing a key input method according to any one of claims 1, 2, 5, and 8 to 8 is recorded. An output unit for outputting a virtual keypad in which a key arrangement between at least two rows in the basic key arrangement is mutually changed, the virtual keypad including at least one cheat key;
An input unit for receiving a key through the virtual keypad; And
And a controller for recognizing a password by excluding the cheating key from the input keys and combining the input key,
Wherein the control unit determines at least one of the keys of the virtual keypad as a cheat key, and controls the cheat key to be visually distinguished from other keys and output through the output unit. 11. The method of claim 10,
Wherein the primary key arrangement is a QWERTY key arrangement. 11. The method of claim 10,
Wherein the control unit controls the virtual keypad, which is generated by mutually changing key arrangements of at least two rows in the basic key arrangement, through the output unit each time a password is input for each digit. 13. The method of claim 12,
Wherein the control unit changes the key arrangement of the (2n-1) -th row and the (2n-1) th row in the basic key arrangement to output the virtual keypad each time the password is input for each digit of the password. . 11. The method of claim 10,
Wherein the controller divides the numeric key and the time information of the character key into the virtual keypad and controls the virtual keypad to output the divided time information through the output unit. delete delete 11. The method of claim 10,
And a setting unit configured to set the number of the cheating keys from the user,
Wherein the control unit determines a cheat key by the number of cheat keys set in the setting unit, and visually distinguishes the cheat key on the virtual keypad. 11. The method of claim 10,
Wherein the control unit determines the cheat key among the keys included in at least the row whose key layout is changed and outputs the virtual keypad.

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