KR101228088B1 - System and method for inputing password - Google Patents

Abstract

PURPOSE: A password input system and a method thereof are provided to handle shoulder surfing and key logging attacks by inputting a temporary password generated through a random keypad without the leakage of a password to the outside. CONSTITUTION: A keypad output unit(110) selectively outputs a general or random keypad. A matching information storage unit(130) stores matching information generated by matching each key of the general keypad and the random keypad based on position relations. If a key is inputted in a state that the general keypad is activated after the random keypad is displayed for a set time, a decoding unit(140) decodes keys of the general keypad matched with positions of keys of the random keypad having the same value as the inputted key as an input password. A comparing unit(150) compares the decoded input password with a password stored in a password storage unit. [Reference numerals] (110) Keypad output unit; (120) Password storage unit; (130) Matching information storage unit; (140) Decoding unit; (150) Comparing unit; (160) Display unit; (170) Security level control unit

Description

Password entry system and method {SYSTEM AND METHOD FOR INPUTING PASSWORD}

The present invention relates to a password input system and method.

With the recent increase in the use of unattended ATMs and the active activation of Internet banking and mobile banking using smartphones, tablet computers, PCs, etc., individuals are required to enter passwords for personal identification in public places. It was. Nevertheless, the conventional password input method using a keyboard records a keylogging attack in which a user records button information and finds out a password, or shoulder surfing that finds and looks at a user's password behind a user's shoulder. Shoulder Surfing) has the disadvantage of being very vulnerable to attack. In particular, if a user repeatedly enters the same password, it is highly likely to be exposed to such risks. As described above, many techniques for reinforcing safety in case of repeatedly inputting a password have been proposed, but there are still many limitations in order to simultaneously satisfy safety and convenience.

Therefore, in order to prevent such a phenomenon, it is required to develop a strong password input method not only for keylogging attacks but also for shoulder surfing attacks.

In this regard, Korean Patent Laid-Open Publication No. 2010-0020559 (name of the invention: a password input device for preventing password leakage and a method of controlling the same) has a password and an imaginary part set in various devices in which authentication is performed by inputting a password. A password input device and a control method for inputting a password while arbitrarily performing a plurality of key inputs are disclosed.

The present invention is to solve the above-mentioned problems of the prior art, some embodiments of the present invention, while using the password input authentication method using the existing PIN as it is, to enhance the safety and also to adjust the security and convenience password input It is an object of the present invention to provide a system and method.

As a technical means for achieving the above-described technical problem, the password input system according to the first aspect of the present invention is a keypad output unit for selectively outputting a normal keypad or a random keypad according to the user's selection, and each key of the general keypad and A matching information storage unit for storing matching information for matching each key of the random keypad based on a positional relationship, a password storage unit for storing a password set in a key arrangement state of the general keypad by a user, and after activating the random keypad, When a user's key input occurs while the general keypad is activated, a decryption is performed by checking the position of the input key on the activated random keypad and decrypting the key on the general keypad corresponding to each position as the user's input password. And passwords stored in the And a comparison unit for comparing the input password decrypted by the decryption unit, wherein the general keypad is a keypad in which numbers or letters are sequentially arranged according to a preset rule, and the random keypad randomly changes a key arrangement on the general keypad. It is a keypad.

In addition, the password input system according to the second aspect of the present invention is a keypad output unit for selectively outputting a normal keypad or a random keypad according to the user's selection, the password stored in the key arrangement state of the general keypad by the user stored password A matching information storage unit for storing matching information for matching each key of the general keypad with each key of the random keypad based on a positional relationship, and a password set in a key arrangement state of the general keypad after activation of the random keypad. A temporary password storage unit for setting and storing a key on the activated random keypad having a matching position as a temporary password, and when a user's key input occurs while the general keypad is activated, the input key is compared with the temporary password. Including a comparator to check their matches Being the normal keypad is a keypad, which are sequentially arranged in accordance with the rule is a preset number or a character, the random keypad is a keypad that randomly change the key arrangement on the normal keypad.

In addition, a password input method using a password input system according to a third aspect of the present invention comprises the steps of activating a random keypad according to the user's selection, each key of the general keypad and each key of the random keypad based on the positional relationship Storing the matching information matched, after activating the random keypad, checking a position of the input key on the activated random keypad when a user's key input occurs while the general keypad is activated; Decrypting a key on a common keypad matched to each location as a user's input password, and comparing the input password with a pre-stored password, wherein the general keypad is sequentially arranged according to a predetermined rule of numbers or letters. The keypad is arranged and the random keypad is the general keypad. The keypad is randomly changed.

According to one embodiment of the above-described problem solution means of the present invention, by inputting the temporary password generated through the random keypad without exposing the password set by the user to the outside, it is possible to respond to shoulder surfing and keylogging attack.

1 is a diagram illustrating a password input system according to a first embodiment of the present invention.
2 illustrates a method of inputting a password in a password input system.
3 is a diagram illustrating a preset area on a keypad output unit of a password input system.
4 is a diagram illustrating a display unit of a password input system.
5 is a diagram illustrating a security level control unit of the password input system.
6 is a diagram illustrating an embodiment of adjusting a security level of a password input system.
7 illustrates a plurality of random keypads each having a different color.
8 is a diagram illustrating a password input method using a password input system according to a first embodiment.
9 is a diagram illustrating a password input method using a password input system according to a second embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as "comprising ", it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.

1 is a diagram illustrating a password input system according to a first embodiment of the present invention, FIG. 2 is a diagram showing a method of inputting a password, FIG. 3 is a diagram showing a preset area on a keypad output unit, and FIG. 4. 5 is a diagram illustrating a display unit, FIG. 5 is a diagram illustrating a security level control unit, FIG. 6 is a diagram showing an embodiment of adjusting a security level, and FIG. 7 is a diagram showing a plurality of random keypads having different colors. .

Password input system 100 according to the first embodiment of the present invention is a keypad output unit 110, password storage unit 120, matching information storage unit 130, decryption unit 140 and comparison unit 150, The display unit 160 and the security level adjusting unit 170 are included.

The keypad output unit 110 selectively outputs a general keypad or a random keypad according to a user's selection. In addition, the keypad output unit 110 may enter a password when the serial keypad is activated after the random keypad is activated. In this case, the general keypad is a keypad arranged sequentially in accordance with a predetermined rule, meaning that the keypad is arranged in the same manner as the numeric key buttons used in a mobile phone or an ATM. That is, it refers to a keypad in which numbers 1 to 9 are arranged in order. The random keypad refers to a keypad in which key arrangements on a general keypad are randomly changed.

Meanwhile, the keypad output unit 110 may output a random keypad when the user's input means maintains a contact state with respect to the preset area 111 of the display panel, and output a general keypad when the input means maintains a non-contact state. In this case, the input means refers to various tools capable of detecting a touch action on a user's finger, a pen-type input tool, and other touch screens.

2 and 3, the random keypad is activated when the user maintains the contact state of the input means 220 in the preset area 111 of the display panel in the state in which the general keypad is activated (210). When the user maintains the contactless state of the input means 230, the general keypad is activated instead of the random keypad which was activated.

In addition, the keypad output unit 110 outputs a different random keypad each time a contact of the input means with respect to the first area 113 of the preset area 111 occurs, and the second area 115 of the preset area 111. The same random keypad is output each time a contact occurs with the input means. Referring to FIG. 3, when contacting a portion corresponding to the first region 113 of the preset region 111 of the keypad output unit 110, the random having a numeric arrangement different from that of the random keypad previously output. The keypad is newly output. Therefore, the user can increase the security by newly outputting the random keypad. On the other hand, when contacting the portion of the preset area 111 corresponding to the second area 115, a random keypad having the same numeric array as that of the random keypad previously outputted is repeatedly output. Therefore, when the user forgets the password matching the existing random keypad, the user can cope with this by outputting a new random keypad or outputting the same random keypad again.

Meanwhile, the preset area 111 of the keypad output unit 110 is not divided into the first area 113 and the second area 115, but may be selectively implemented for one area. That is, the preset area 111 may allow only the same random keypad to be output every time a contact occurs in the input means, while only a different random keypad is output every time a touch occurs in the input means. In addition, the preset area 111 may select to output the same random keypad or to output a different random keypad every time a contact of the input means occurs without distinguishing the areas.

Referring to FIG. 1, the password storage unit 120 stores a password set in a key arrangement state of a general keypad by a user. The user does not directly input the password stored in the password storage unit 120, but inputs a newly displayed password on the random keypad according to the matching information matched based on the positional relationship in the matching information storage unit 130 to be described later.

The matching information storage unit 130 stores matching information obtained by matching each key of the general keypad with each key of the random keypad based on a positional relationship. Referring to FIG. 2, when the random keypad is activated after the general keypad is activated, the matching information storage unit 130 stores matching information of keys on the general keypad having the same position with respect to all keys on the random keypad. For example, the number on the random keypad having the same position as the number 1 on the general keypad is 5, and the number on the random keypad having the same position as the number 4 on the general keypad is 8. By establishing a matching relationship as described above, a user may input a newly displayed password instead of directly inputting a preset password, thereby increasing the security of the password input system.

Referring to FIG. 1, when the random keypad is activated and the user's key input is generated in a state in which the general keypad is activated 230, the decryption unit 140 may be configured on the activated random keypad 220 of the input key. Check the position of and decrypt the key on the normal keypad 210 that matches each position as the user's input password. Referring to FIG. 2, first, when a user sets a preset password on the general keypad 210 as '1234', the number having the same position as '1234' on the general keypad on the activated random keypad 220 is Becomes '5718'. Next, when the general keypad is activated again 230 and the user sequentially inputs '5718', the number '1234' on the general keypad matching '5718' is decrypted on the activated random keypad 220.

Referring to FIG. 1, the comparison unit 150 compares the password stored in the password storage unit 120 with the input password decrypted by the decryption unit 140. After decrypting the key on the initial general keypad that matches the password input by the user by the decryption unit 140, and confirms whether the password match by comparing the decrypted key and the user-set password.

When the user's key input occurs, the display unit 160 converts the number of digits of the key input by the user into special characters for display. For example, referring to FIG. 4, when a user inputs three keys on a general keypad, three “*” shapes are output to the display unit 160, so that the user can check the number of keys input by the user.

On the other hand, in the password input system according to the first embodiment of the present invention, the keypad output unit 110 is different from the first random keypad when the input means contact to the first area 113 of the preset area 111 You can output a random keypad. In this case, the matching information storage unit 130 stores matching information obtained by matching each key of the first random keypad with each key of the general keypad based on a positional relationship. Also, matching information obtained by matching each key of the second random keypad with each key of the general keypad based on a positional relationship is stored. In addition, the decryption unit 140 decrypts the password based on the matching information of the first random keypad and the general keypad for the key input input through the general keypad after the first random keypad is activated. Next, for a key input input through the general keypad after the second random keypad is activated, the password is decrypted based on matching information between the second random keypad and the general keypad.

For example, when the input number of the user is '1234', the first random keypad is activated through the contact of the first area 113 with respect to '12' so that the user is located at '12' on the first random keypad. After confirming the number matching the, the contact of the first area 113 is released to input a numeric key. Thereafter, the second random keypad is activated again through the contact of the first area 113, and the user checks the number matching '34' on the second random keypad, and then releases the contact of the first area 113. Enter the key.

In this case, the decryption unit 140 may sequentially check the matching information of the first random keypad and the general keypad and the matching information of the second random keypad and the general keypad in order to decode the input password of the user.

Meanwhile, a password may be input based on two or more random keypads according to a contact state of the first region 113 of the user. For example, if the number of digits of the password is n, up to n random keypads can be activated to input the password, and the security can be further improved.

The security level adjusting unit 170 will be described with reference to FIGS. 1 and 5 to 7 as follows. The security level control unit 170 outputs a plurality of random keypads on the keypad output unit 110, and the keys on the random keypad of a position preset by the user among the plurality of random keypads and each key of the general keypad are located in a positional relationship. Can be matched based on this.

Specifically, the security level control unit 170 may be included in the form that the control key 171 is included in the bar (bar) on the password input system, as shown in FIG.

Referring to FIG. 6, when the control key 171 of the security level adjusting unit 170 is located at the leftmost side, the security level is the lowest and only one random keypad is activated and output. Therefore, in this case, although the security is low, the user's convenience can be increased. On the other hand, when the control key 171 of the security level adjusting unit 170 is gradually positioned from the left side to the right side (620, 650), the security level is gradually increased and a plurality of random keypads are output. For example, referring to Figure 6 (a), the control key 171 of the security level adjusting unit 170 is located in the middle (620), at this time, the security level is an intermediate level and four random keypads are output do. In addition, referring to Figure 6 (b), the control key 171 of the security level adjusting unit 170 is located at the rightmost (650), at this time the security level is the highest state and nine random keypads are output .

Meanwhile, the security level controller 170 outputs a plurality of random keypads displayed in different colors on the keypad output unit 110, and keys on a random keypad of a color preset by a user among a plurality of random keypads and a general keypad. Each key of may be matched based on the positional relationship.

Referring to FIG. 7, when a random keypad of a color preset by a user among a plurality of random keypads is called a first color, a key 710 on the random keypad of the first color and each key of the general keypad are based on a positional relationship. To match. Therefore, when the user preset password on the general keypad is '1234', the keys in the same positional relationship on the random keypad of the first color become '5718', so when the user again activates the general keypad, the user enters '5718'. If you input sequentially, the decryption unit decrypts the '1234' key on the normal keypad.

In addition, the security level controller 170 outputs a plurality of random keypads displayed in different colors on the keypad output unit 110. In addition, a randomly selected color among a plurality of random keypads is output as a voice, and a key on the random keypad of the randomly selected color and each key on the general keypad are matched based on the positional relationship. Therefore, the user sees a key on the random keypad corresponding to the color output by voice and inputs a password when the general keypad is activated. In this way, security can be increased through the configuration using any one of the plurality of random keypads.

Meanwhile, the keypad output unit of the password input system 100 according to the present invention converts the conversion from the general keypad to the random keypad or the conversion from the random keypad to the general keypad based on the user's motion. For example, in the random keypad state, the user's hand gesture may be recognized and converted into a normal keypad. In addition, in the random keypad state, the user can be converted to the general keypad by changing the position and angle of the device. In other words, since the position and angle of the device is changed, the general keypad and the random keypad of the same screen are not exposed from the external environment such as a rear camera, thereby increasing the security when inputting a password.

On the other hand, the plurality of random keypads output to the keypad output unit 110 of the password input system 100 according to the present invention may be arranged in a different arrangement of the number corresponding to each key. For example, referring to FIG. 7, the first key of the area 710 corresponding to the first color is number 5, but the number 5 may not come to the first key of the remaining colors except for the first color. Thus, by arranging numbers differently, security can be improved.

Referring to FIG. 1, the password input system 100 according to the second embodiment of the present invention includes a keypad output unit 110, a password storage unit 120, a matching information storage unit 130, and a temporary password storage unit (not shown). C), a comparator 150 and a security level controller 170.

The keypad output unit 110 selectively outputs a general keypad or a random keypad according to a user's selection.

Meanwhile, as described with reference to FIG. 2, the keypad output unit 110 outputs a random keypad when the user's input device maintains a contact state with respect to the preset area 111 of the display panel, and generates a general keypad when the user's noncontact state is maintained. The keypad can be output.

In addition, as described with reference to FIG. 3, the keypad output unit 110 outputs a different random keypad every time a contact of the input means with respect to the first area 113 occurs among the preset areas 111 and the preset area 111. The same random keypad may be output whenever a contact of the input means with respect to the second area 115 occurs.

In addition, the preset region 111 of the keypad output unit 110 may be selectively implemented for one region instead of being divided into the first region 113 and the second region 115. That is, the preset area 111 may allow only the same random keypad to be output every time a contact occurs in the input means, while only a different random keypad is output every time a touch occurs in the input means. In addition, the preset area 111 may select to output the same random keypad or to output a different random keypad every time a contact of the input means occurs without distinguishing the areas.

Referring back to FIG. 1, the password storage unit 120 stores a password set in a key arrangement state of a general keypad by a user.

The matching information storage unit 130 stores matching information obtained by matching each key of the general keypad with each key of the random keypad based on a positional relationship. The matching information storage unit has been described with reference to FIG. 2.

After activating the random keypad, the temporary password storage unit sets and stores a key on the random keypad whose position relationship matches the password set in the key arrangement state of the general keypad as a temporary password. When the user's key input occurs while the general keypad is activated, the comparator 150 compares the input key with the temporary password and checks whether there is a match.

Referring to FIG. 2, the temporary password setting unit and the comparison unit 150 will be described. When the password set in the key arrangement state 210 of the general keypad is '1234', the position relationship is matched with '1234'. A key '5718' on the random keypad 220 is set as a temporary password. Next, when the general keypad is activated 230 and the user sequentially inputs '5718' set as the temporary password, the comparison unit 150 compares the input password with the temporary password to determine whether the password is authenticated. You will be confirmed.

Referring back to FIG. 1, the security level controller 170 outputs a plurality of random keypads on the keypad output unit 110, and keys on a random keypad and a general keypad of a predetermined position among a plurality of random keypads. Each key of is matched based on the positional relationship. This is as described with reference to FIG. 6.

In addition, the security level control unit 170 outputs a plurality of random keypads displayed in different colors on the keypad output unit 110, respectively, a key on a random keypad of a color preset by the user among the plurality of random keypads and the general keypad Each key of is matched based on the positional relationship. This is as described with reference to FIG. 7.

In addition, the security level adjusting unit 170 outputs a plurality of random keypads displayed in different colors on the keypad output unit 110, and outputs a randomly selected color among a plurality of random keypads by voice, and randomly selected colors. The keys on the random keypad of are matched with the keys on the general keypad based on the positional relationship. In this case, the user may check the voice through the earphone or set the voice to a low pitch to check the voice.

On the other hand, in the password input system according to a second embodiment of the present invention, the keypad output unit 110 is different from the first random keypad when the input means contact to the first area 113 of the preset area 111 You can output a random keypad. At this time, the matching information storage unit 130 stores matching information obtained by matching each key of the first random keypad with each key of the general keypad based on a positional relationship, and each key of the second random keypad and each key of the general keypad. Stores matching information matched based on the positional relationship.

The temporary password storage unit stores, as the first temporary password, a key on the activated first random keypad whose position relationship matches the password set in the key arrangement state of the general keypad. In addition, a key on the activated second random keypad whose position relationship matches the password set in the key arrangement state of the general keypad is stored as the second temporary password.

The comparison unit 150 compares the input key with the first temporary password when a key input of the user occurs while the general keypad is activated after the first random keypad is activated. Next, when the user's key input occurs while the general keypad is activated after the second random keypad is activated, the input key is compared with the second temporary password to check whether the key is matched.

For example, when the input number of the user is '1234', the first random keypad is activated through the contact of the first area 113 with respect to '12' so that the user is located at '12' on the first random keypad. After confirming the number matching the, the contact of the first area 113 is released to input a numeric key. Thereafter, the second random keypad is activated again through the contact of the first area 113, and the user checks the number matching '34' on the second random keypad, and then releases the contact of the first area 113. Enter the key.

At this time, the comparator 150 may sequentially check the first temporary password and the input password, and the second temporary password and the input password in the order of inputting the password to decrypt the user's input password.

Meanwhile, a password may be input based on two or more random keypads according to a contact state of the first region 113 of the user. For example, if the number of digits of the password is n, up to n random keypads can be activated to input the password, and the security can be further improved.

8 is a diagram illustrating a password input method using a password input system according to a first embodiment of the present invention.

The password input method using the password input system according to the present invention first activates a random keypad according to a user's selection (S810).

At this time, the step of activating the random keypad, the plurality of random keypad on the keypad output unit 110 according to the security level control of the user, and the key on the random keypad of the position preset by the user of the plurality of random keypad Each key of the general keypad can be matched based on the positional relationship.

The activating of the random keypad may include outputting a plurality of random keypads displayed in different colors on the keypad output unit 110 according to the security level of the user, and a color preset by the user among the plurality of random keypads. The keys on the random keypad of and each key of the general keypad can be matched based on the positional relationship.

The activating of the random keypad may include outputting a plurality of random keypads on the keypad output unit according to a security level of the user, outputting a randomly selected color among the plurality of random keypads by voice, and selecting the randomly selected color. The keys on the random keypad of and each key of the general keypad can be matched based on the positional relationship.

On the other hand, the step of activating the random keypad, the step of outputting the random keypad when the contact state of the user's input means with respect to the predetermined area of the display panel, and outputting the normal keypad when the contact state of the input means is maintained can do.

The activating of the random keypad may include outputting a different random keypad every time a contact of the input means to the first area of the preset area occurs, and a same random keypad each time a contact of the input means to the second area of the preset area occurs. It may further comprise the step of outputting.

Next, matching information obtained by matching each key of the general keypad with each key of the random keypad based on the positional relationship is stored (S820). This stores the matching relationship of each key of the random keypad having the same position as each key of the general keypad as described above.

Next, after activation of the random keypad, when a user's key input occurs in a state where the general keypad is activated (S830), the position of the input key on the activated random keypad is checked (S840). For example, if a user sequentially inputs '5718' on a general keypad, the user may check the position of '5718' on the random keypad.

Next, the key on the general keypad matched to each position is decrypted as the user's input password (S850). For example, after confirming the position of '5718' on the random keypad, the key matching the normal keypad is identified and decrypted as the user's input password.

Next, the previously stored password and input password is compared (S860). Since the decrypted password as the input password is '1234', it is checked whether or not the password is verified by comparing the same as the previously stored password '1234'.

9 is a diagram illustrating a password input method using a password input system according to a second embodiment of the present invention.

First, the random keypad is activated according to the user's selection (S910).

At this time, the step of activating the random keypad, the plurality of random keypad on the keypad output unit 110 according to the security level control of the user, and the key on the random keypad of the position preset by the user of the plurality of random keypad Each key of the general keypad can be matched based on the positional relationship.

The activating of the random keypad may include outputting a plurality of random keypads displayed in different colors on the keypad output unit 110 according to the security level of the user, and a color preset by the user among the plurality of random keypads. The keys on the random keypad of and each key of the general keypad can be matched based on the positional relationship.

The activating of the random keypad may include outputting a plurality of random keypads on the keypad output unit according to a security level of the user, outputting a randomly selected color among the plurality of random keypads by voice, and selecting the randomly selected color. The keys on the random keypad of and each key of the general keypad can be matched based on the positional relationship.

On the other hand, the step of activating the random keypad, the step of outputting the random keypad when the contact state of the user's input means with respect to the predetermined area of the display panel, and outputting the normal keypad when the contact state of the input means is maintained can do.

The activating of the random keypad may include outputting a different random keypad every time a contact of the input means to the first area of the preset area occurs, and a same random keypad each time a contact of the input means to the second area of the preset area occurs. It may further comprise the step of outputting.

Next, matching information obtained by matching each key of the general keypad and each key of the random keypad based on the positional relationship is stored (S920). This stores the matching relationship of each key of the random keypad having the same position as each key of the general keypad as described above.

Next, after the random keypad is activated, a temporary password is generated and stored based on the random keypad (S930). For example, referring to FIG. 2, a temporary password '5718', which is a key having the same position as a password on a general keypad, is generated as a temporary password on the activated random keypad and stored therein.

Next, when a user's key input occurs while the general keypad is activated (S940), the temporary password is compared with the input password (S950). For example, since the stored temporary password is '5718', it is checked whether or not the password is authenticated by comparing with the input password '5718'.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: password input system 111: preset area
113: first region 115: second region
160: display unit 170: security level control unit

Claims (26)

In the password input system,
Keypad output unit for selectively outputting a normal keypad or a random keypad according to the user's selection,
A matching information storage unit for storing matching information in which one key corresponds to each key of the general keypad and each key of the random keypad based on a positional relationship of each key on the keypad;
Password storage unit for storing the password set in the key arrangement state of the general keypad by the user,
After the random keypad is activated according to the user's selection and the random keypad is displayed for a preset time, when the user's key input occurs while the general keypad is activated, the random keypad has the same value as the input key. Decryption unit for decrypting the key on the common keypad matching the position of the key as the user's input password and
Comprising a comparison unit for comparing the password stored in the password storage unit and the input password decrypted by the decryption unit,
The general keypad is a keypad in which numbers or letters are sequentially arranged according to a preset rule, and the random keypad is a keypad which randomly changes a key arrangement on the general keypad.
The method of claim 1,
The keypad output unit outputs the random keypad when the user's input means maintains contact with the preset area of the display panel, and outputs the general keypad when the input means maintains the non-contact state.
The method of claim 2,
The predetermined area of the keypad output unit may be different from the random keypad output immediately before the touch state of the user's input means is generated, or the same as the random keypad output immediately before the touch state of the input means, according to the user's selection. Password input system with random keypad output.
The method of claim 2,
The keypad output unit outputs a random keypad different from the random keypad immediately outputted before the touch of the input means to the first area of the preset area, and occurs when the touch of the input means to the second area of the preset area occurs. The password input system that outputs the same random keypad as the random keypad output immediately before.
The method of claim 4, wherein
The keypad output unit may output a second random keypad different from the first random keypad when a contact of the input unit with respect to the first area occurs in the preset area,
The matching information storage unit matches each key of the first random keypad with each key of the general keypad based on a positional relationship, and each key of the second random keypad with each key of the general keypad in a positional relationship. Storing matching information matched based on each other,
The decryption unit decrypts a password based on matching information between the first random keypad and the general keypad for a key input input through the general keypad after the first random keypad is activated, and after the second random keypad is activated. And a password input system for decrypting a password based on matching information between the second random keypad and the general keypad.
The method of claim 1,
A security level control unit for outputting a plurality of random keypads on the keypad output unit and matching keys on a random keypad of a predetermined position among the plurality of random keypads with each key of the general keypad based on a positional relationship; Password input system further including.
The method of claim 1,
Output a plurality of random keypads displayed in different colors on the keypad output unit, and matching keys on a random keypad of a color preset by a user among the plurality of random keypads with each key of the general keypad based on a positional relationship Password input system further comprises a security level control unit.
The method of claim 1,
Outputs a plurality of random keypads displayed in different colors on the keypad output unit, and outputs a randomly selected color among the plurality of random keypads by voice, and displays a key on the random keypad of the randomly selected color and the general keypad. And a security level controller for matching each key based on the positional relationship.
9. The method according to any one of claims 6 to 8,
And said plurality of random keypads are arranged differently from each other in the positions of the arranged numbers.
The method of claim 1,
And the keypad output unit converts the normal keypad to the random keypad or the random keypad to the normal keypad based on a user's motion.
The method of claim 1,
And a display unit for converting and displaying the number of digits of the key input by the user when the key input is generated by the user.
In the password input system,
Keypad output unit for selectively outputting a normal keypad or a random keypad according to the user's selection,
Password storage unit for storing the password set in the key arrangement state of the general keypad by the user,
A matching information storage unit for storing matching information in which one key corresponds to each key of the general keypad and each key of the random keypad based on a positional relationship of each key on the keypad;
After the random keypad is activated according to the user's selection and the random keypad is displayed for a preset time, the keys on the activated random keypad whose positional relationship is matched with each key corresponding to the password set in the key arrangement state of the general keypad A temporary password storage unit for storing and setting the password as a temporary password;
When the user's key input occurs in the state that the normal keypad is activated, a comparison unit for comparing the input key and the temporary password to determine whether the match,
The general keypad is a keypad in which numbers or letters are sequentially arranged according to a preset rule, and the random keypad is a keypad which randomly changes a key arrangement on the general keypad.
13. The method of claim 12,
The keypad output unit outputs the random keypad when the user's input means maintains contact with the preset area of the display panel, and outputs the general keypad when the input means maintains the non-contact state.
The method of claim 13,
The predetermined area of the keypad output unit may be different from the random keypad output just before the touch state of the user's input means is generated, or the same as the random keypad output immediately before the touch state of the input means, according to the user's selection. Password input system with random keypad output.
The method of claim 13,
The keypad output unit outputs a random keypad different from a random keypad output immediately before when a contact of the input means with respect to the first area of the preset area occurs, and when a contact of the input means with respect to the second area of the preset area occurs. Password input system that outputs the same random keypad as the one outputted just before.
The method of claim 15,
The keypad output unit may output a second random keypad different from the first random keypad when a contact of the input unit with respect to the first area occurs in the preset area,
The matching information storage unit matches each key of the first random keypad with each key of the general keypad based on a positional relationship, and each key of the second random keypad with each key of the general keypad in a positional relationship. Storing matching information matched based on
The temporary password storage unit stores a key on the activated first random keypad whose positional relationship matches the password set in the key arrangement state of the general keypad as a first temporary password, and the password set in the key arrangement state of the general keypad. Store a key on the activated second random keypad whose position relationship matches as a second temporary password,
The comparison unit compares the input key with the first temporary password when a user's key input occurs while the general keypad is activated after the first random keypad is activated, and after the second random keypad is activated, the general keypad is A password input system for comparing a key entered with a second temporary password when a user's key input occurs in an activated state and confirming a match.
13. The method of claim 12,
A security level control unit for outputting a plurality of random keypads on the keypad output unit and matching keys on a random keypad of a predetermined position among the plurality of random keypads with each key of the general keypad based on a positional relationship; Password input system further including.
The method of claim 12, wherein a plurality of random keypads displayed in different colors are output on the keypad output unit, and a key on a random keypad of a color preset by a user among the plurality of random keypads, and each key of the general keypad. Password input system further comprising a security level adjusting unit for matching based on the positional relationship.
13. The method of claim 12,
Outputs a plurality of random keypads displayed in different colors on the keypad output unit, and outputs a randomly selected color among the plurality of random keypads by voice, and displays a key on the random keypad of the randomly selected color and the general keypad. And a security level controller for matching each key based on the positional relationship.
In the password input method using a password input system,
Activating a random keypad according to a user's selection,
Storing matching information in which each key of the general keypad and each key of the random keypad are one-to-one corresponded to each other based on the positional relationship of each key on the keypad;
After the random keypad is activated according to the user's selection and the random keypad is displayed for a preset time, when the user's key input occurs while the general keypad is activated, the random keypad has the same value as the input key. Decrypting a key on the general keypad matched to the position of the key as the input password of the user;
Comparing the previously stored password with the input password,
The general keypad is a keypad in which numbers or letters are sequentially arranged according to a preset rule, and the random keypad is a keypad that randomly changes a key arrangement on the general keypad.
21. The method of claim 20,
The activating of the random keypad may further include outputting the random keypad when the user's input means maintains contact with the preset area of the display panel, and outputting the general keypad when the input means maintains the non-contact state. Password input method using password input system.
21. The method of claim 20,
The activating of the random keypad may include outputting a random keypad different from the immediately outputted random keypad when a contact of the input means with respect to the first area of the preset area occurs, and outputting a random keypad to the second area of the preset area. If a contact occurs with the input means for the password input method using a password input system further comprising the step of outputting the same random keypad that was output immediately before.
21. The method of claim 20,
The activating of the random keypad may include outputting a second random keypad different from the first random keypad when a contact of the input means with respect to the first area occurs in the preset area.
The storing of the matching information may include matching each key of the first random keypad and each key of the general keypad based on a positional relationship, each key of the second random keypad, and each key of the general keypad. The storing and decoding of the matched matching information based on the positional relationship may be performed according to matching information of the first random keypad and the general keypad for key input input through the general keypad after the first random keypad is activated. A password using a password input system that decrypts the password based on the matching information between the second random keypad and the general keypad for key input input through the general keypad after the second random keypad is activated. Input method.
21. The method of claim 20,
The activating of the random keypad may include outputting a plurality of random keypads on the keypad output unit according to security level adjustment, and among the plurality of random keypads, a key on a random keypad at a position preset by a user and the general keypad. A password input method using a password input system that matches each key based on a positional relationship.
21. The method of claim 20,
The activating of the random keypad may include outputting a plurality of random keypads displayed in different colors on the keypad output unit according to security level adjustment, and a key on a random keypad of a color preset by a user among the plurality of random keypads. And a password input system for matching each key of the general keypad based on a positional relationship.
21. The method of claim 20,
The activating of the random keypad may include: outputting a plurality of random keypads on the keypad output unit according to security level adjustment, outputting a randomly selected color among the plurality of random keypads by voice, and A password input method using a password input system that matches a key on a random keypad with each key of the general keypad based on a positional relationship.

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