JP2003337799A - Identification number conversion system and authentication device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system and a device facilitating an entry of a user identification number. <P>SOLUTION: The identification number conversion system 10 comprises a terminal 11A for outputting an identification number ID, a user identification number determination part and a user identification number conversion part. The identification number ID is a character string of either a numeric string or an alphanumeric string including a numeric string and an alphabetic string. The user identification number determination part determines which character string the identification number ID output from the terminal 11A is. If the identification number ID output from the terminal 11A is a numeric string, the user identification number conversion part converts a set part of the numeric into an alphabetic string to generate an alphanumeric string. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an identification number conversion system and an authentication device, and more particularly to a conversion system of a user identification number input when connecting from a terminal to a network, and used in the conversion system. Regarding the authentication device.

[0002]

2. Description of the Related Art A technique relating to a method and means for combining personal verification and message authentication encryption for network transmission is described in Japanese Patent Laid-Open No. 7-297819.

The method is for maintaining transaction data between two locations depending on the user's message and personal identification number. Specifically, it is as follows. Forming a sequence number indicating the transaction of the user, encoding the message of the user and the sequence number according to a first logical combination in one position according to a personal identification number received from the user, a plurality of numbers; Generate a message authentication code having a sector. Also, a random number is generated and the first
Establish an encoding key for the. Encoding a number selected from the sector of the random number and the message authentication code by the first encoding key according to a second logical combination at the one position to produce a first encoded output. To do. The first encoding key encodes the personal identification number of the user at the one location according to a third logical combination to produce a second encoded output.

Transmitting the user's message and the serial number, and the first and second encoded outputs to another location, where the first encoding key is established. . Decoding the first encoded output received at the another location with the first encoding key according to the second logical combination to provide the random number and the message authentication code. The second encoded output received at the different location is decoded with the first encoding key according to the third logical combination to provide the user's personal identification number. Encoding the user's message and sequence number received at the location according to the first logical combination at the another location with the decoded personal identification number to generate a message authentication code having a plurality of numeric sectors. To do. Comparing the decoded message authentication code with a selected corresponding digit sector of the encoded message authentication code, and if the result of this comparison is good, the user's message transmission between the two locations. Indicates that was valid.

A technique relating to a device and method for verifying the permission of the processing of the personal identification number is described in Japanese Patent Publication No. 8-23736.

According to this prior art, the data processing system provides a cryptographic key associated with a control vector defining a personal identification number processing function, which permits the use of the cryptographic key required for processing by the setter of the cryptographic key. It outputs a cryptographic service request for management. In this data processing system, a device for verifying that the personal identification number processing function requested for a certain encryption key is permitted to be used by the person who set up the encryption key (hereinafter referred to as "verification device"). Is used. The verification device is characterized by a cryptographic command storage means connected to an input command and a security protection mechanism, and is associated with the cryptographic service request, the cryptographic key and them via the input circuit passing through the security protection mechanism. A cryptographic mechanism that receives the control vector and provides a response to the cryptographic service request via an output path. Within the security boundary of the cryptographic mechanism, there are arranged a control vector verification means connected to the cryptographic command storage means, a cryptographic processing means, and a main key storage means connected to the cryptographic processing means.
The cryptographic command storage means receives the cryptographic service request via the input circuit in order to execute the personal identification number processing function using the cryptographic key.

In the verification device, the control vector verification means receives the control vector associated with the encryption key, the input unit connected to the input path, and the personal identification number process requested by the cryptographic service request. An input connected to the cryptographic instruction storage means for initiating an operation of verifying whether a function is permitted by the control vector. Further, the verification device has an output unit connected to the input unit of the cryptographic processing unit in order to output a signal that the control vector verification unit notifies that the personal identification number processing function is permitted. Upon receipt of the signal, the cryptographic processing means starts execution of the requested personal identification number processing function using the cryptographic key. The method of verifying the permission of the personal identification number process is performed using the above verification device.

Next, a conventional technique relating to the user identification number conversion system of the present invention will be described. In recent years, a terminal 11A (a mobile phone is shown as an example in FIG. 7) such as a mobile phone, a personal computer, a game machine, and a personal digital assistant (PDA) is used to connect to an Internet service provider (hereinafter referred to as “provider”). However, it is possible to obtain the necessary information. To connect to the provider using these terminals 11A,
First, it is necessary to input the user identification number that is set in advance between the provider and the user of the terminal 11A. The user identification number is often set in the form of either an alphanumeric string composed of "English characters + numbers" or a numerical string composed of "numbers". An input mode of an alphanumeric string and a numerical string (hereinafter, referred to as a “character string” when referring to either an alphanumeric string or a numerical string) will be described based on the mobile phone shown in FIG. 7. The mobile phone includes an antenna 11a, a speaker 11b, a display 11c, a function button 11d, a call button CB, a symbol button MB, a power button PB, and input buttons 1B to 10B (1B, 2B, 3B, 4B, 5B, 6).
B, 7B, 8B, 9B, 10B).

The character string is input using the input buttons 1B to 10B. On mobile phones, input buttons 1B-1
The number of 0B is often relatively smaller than that of the other terminal 11A, but since the number corresponding to one input button 1B to 10B is one, the corresponding input button is required to input the number. It suffices to operate 1B to 10B. However, on the other hand, there are a plurality of alphabetic characters corresponding to one input button 1B to 10B (for example, for the input button 2B,
Since the three characters A, B, and C correspond to each other, it is difficult for the person who is unfamiliar with the operation of the mobile phone to input an alphabetic character, as compared with the operation of inputting a numeral. This situation may be one of the reasons why users avoid using the Internet using mobile phones, which is not preferable from the viewpoint of improving the Internet usage rate. There is a similar situation with respect to the terminal 11A in which a plurality of letters correspond to one input button 1B to 10B other than the mobile phone.

Therefore, on the side of the provider, it is considered to change the user identification number, which was conventionally an alphanumeric string, into a numeric string so that a person who is unfamiliar with the operation of the terminal can easily input the user identification number. Has been done. However,
Since changing the user identification number requires a great deal of labor and cost, such as a large change in the conventional authentication system, many providers perform the work of changing the user identification number that has been used until now. The current situation is that there are none.

[0011]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a system and apparatus for facilitating the input of a user identification number when a terminal with few input buttons is used or even by a person who is unfamiliar with terminal operation. To provide.

Another object of the present invention is to provide a system and an apparatus for facilitating the input of a user identification number without significantly changing the conventional authentication system.

Still another object of the present invention is to provide a system and an apparatus which can input either an alphanumeric string or a numerical string as a user identification number.

[0014]

[Means for Solving the Problems] The means for solving the problems will be described below by using the numbers and symbols used in [Embodiment of the Invention] in parentheses. These signs are
The technical scope of the invention described in [Claims] is added to clarify the correspondence between the description of [Claims] and the description of [Embodiment of the Invention]. Should not be used to interpret

Identification number conversion system (10) of the present invention
Is a terminal (11A) that outputs an identification number (ID), and the identification number (10) is a character string of any of a numeric string and an alphanumeric string including the numeric string and an alphabetic string. When the identification number (ID) output from the terminal (11A) is the numeric string, a conversion unit (13c) that converts the setting part of the numeric string into the alphanumeric string to generate the alphanumeric string. To have. Identification number conversion system of the present invention (10)
Is the identification number (I
D) further includes a determination unit (13b) that determines which of the character strings is the character string. The conversion unit (13c)
When the determination unit (13b) determines that the identification number (ID) output from the terminal (11A) is the numeric string, the setting portion is converted into the alphanumeric string to convert the alphanumeric characters. Generate a column. The identification number conversion system (10) of the present invention further comprises a table (16) that associates the numbers included in the setting portion with the alphabetic characters included in the alphabetic character string. The conversion unit (13c) refers to the table (16) and converts the number into the alphabetic character to generate the alphanumeric string. The identification number (I
D) shows the user of the terminal (11A).

The authentication device (13A) of the present invention is a terminal (1
1A), which is the first identification number (I
The conversion unit (13c) is provided for converting the set portion of D) into an alphanumeric string to generate an alphanumeric string including the numeric string and the alphanumeric string. The terminal (11A) outputs the first identification number (ID) and the second identification number (PW). The authentication device (13A) of the present invention retrieves the alphanumeric string from the first table (17) that associates the second identification number (PW) with the alphanumeric string, and the first table (17). A second identification number (PW) corresponding to the extracted alphanumeric string when the alphanumeric string that matches the generated alphanumeric string is extracted as a result of the search. An identification unit (13d) that collates an identification number (PW) and, as a result of the collation, authenticates the user of the terminal (11A) when the collated second identification numbers (PW) match each other. It is equipped with.

In the authentication device (13A) of the present invention, the first identification number (ID) is a character string of either the numeric string or the alphanumeric string. Authentication device of the present invention (13
A) further includes a determination unit (13b) that determines which of the character strings the output first identification number (ID) is. In the authentication device (13A) of the present invention, the conversion unit (13c) includes the determination unit (13b).
However, when it is determined that the output first identification number (ID) is the numeric string, the setting part is converted into the alphabetic string to generate the alphanumeric string, and the authentication unit (13d).
Searches the first table (17) based on the generated alphanumeric string. In the authentication unit (13d), the determination unit (13b) outputs the first identification number (I
When it is determined that D) is the alphanumeric string, the first table (17) is searched based on the output alphanumeric string. The authentication device (13A) of the present invention further includes a second table (16) that associates the numbers included in the setting portion with the alphabetic characters included in the alphabetic character string. The conversion unit (13c) generates the alphanumeric string by converting the numbers into the alphabetic characters by referring to the second table (16). An identification number including one of the first identification number (ID) and the second identification number (PW) indicates the user of the terminal (11).

The terminal (11A) of the present invention comprises a plurality of buttons (1B, 2B, 3B, 4B, 5B, 6B, 7B, 8B,
9B, 10B), and the plurality of buttons (1
B, 2B, 3B, 4B, 5B, 6B, 7B, 8B, 9
Each of B, 10B) outputs either a set number or a plurality of set alphabetic characters. Also, the terminal (11A) of the present invention
Is a number string generated based on the output setting number,
And a transmitting unit (11a) for transmitting either an alphanumeric string generated based on the output set number and the output set alphabet.

The identification number conversion method (10a) of the present invention is
The method comprises a step (S1) of outputting an identification number (ID), and the identification number (ID) is either a numerical string or an alphanumeric string including the numerical string and an alphabetic string. In the identification number conversion method (10a) of the present invention, when the output identification number (ID) is the number string, the setting part of the number string is converted into the alphabet string to generate the alphanumeric string. It further comprises a step (S3) of performing. The identification number conversion method (10a) of the present invention further comprises a step (S2) of determining whether the identification number (ID) output from the terminal (11A) is the numeric string or the alphanumeric string. When it is determined that the identification number (ID) output from the terminal (11A) is the numeric string, the setting part is converted to the alphanumeric string to generate the alphanumeric string. The identification number (ID) indicates the user of the terminal (11A).

The authentication method (10a) of the present invention is based on the terminal (1
1A), which is the first identification number (I
The terminal (11A) includes the step (S3) of converting the set part of D) into an alphanumeric string to generate an alphanumeric string including the numerical character string and the alphabetic character string. The identification number (ID) and the second identification number (PW) are output. The authentication method (10a) of the present invention is the same as the second method.
When the alphanumeric string is searched from the table (17) that associates the identification number (PW) with the alphanumeric string, and the alphanumeric string that matches the generated alphanumeric string is extracted as a result of the search. And a second identification number (PW) corresponding to the extracted alphanumeric string and the output second identification number (PW).
W), and as a result of the collation, the collated second
The step (S4) of authenticating the user of the terminal (11A) when the identification numbers (PW) match each other.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the identification number conversion system 10 of the present invention will be described below with reference to the accompanying drawings. The identification number conversion system 10 includes a terminal 11
This is a system for converting the identification number of the user A. In the following description, "user identification number conversion system 1
"0". FIG. 1 shows the configuration of the user identification number conversion system 10. User identification number conversion system 10
Is terminal 11A, content server 13A, terminal 11A
And the Internet 12A for connecting the content server 13A and the content server 13A. In FIG. 1, (1) indicates information output from the terminal 11A to the content server 13A via the Internet 12A, and (2) indicates information output from the content server 13A to the Internet 12A.
It shows the information output to the terminal 11A via.

The terminal 11A is composed of any one of various devices having a function of connecting to the Internet 12A, such as the mobile phone shown in FIG. 7, a personal computer, a game machine, a personal digital assistant (PDA) and the like. . The user of the terminal 11A (hereinafter simply referred to as “user”) is
It is possible to connect to the Internet 12A using any of these devices. Terminal 11A
Has an input device including a plurality of input buttons 1B to 10B. For each of the input buttons 1B to 10B, the number of types of numbers that can be input is one, and the number of types of alphabetic characters that can be input is multiple. However, the present invention is not limited to this form, and the type of alphabetic characters and numbers that can be input to each of the input buttons 1B to 10B may be one type.

The terminal 11A, based on the user's operation,
When connecting to the Internet 12A, each of the user identification number ID, the password PW, and the request information signal DS indicating information requested by the user (hereinafter referred to as "first information") is output to the content server 13A. Also, terminal 1
1A is display information SC including the first information indicated in the request information signal DS, and an encrypted user identification number S described later.
When each of the IDs is input from the content server 13A, the display information SC is displayed on the screen 11c and the encrypted user identification number SID is stored. Thereafter, when the user requests other information (hereinafter referred to as “second information”. This second information is also the display information SC displayed on the screen 11c), the terminal 11A receives the second information. A request information signal DS indicating that the user makes a request and the stored encrypted user identification number SID are output to the content server 13A. Information by the terminal 11A (user identification number ID, password PW, request information signal DS, encrypted user identification number SID, conversion request signal C
The output of S) is performed by the transmission unit 11a.

The user identification number ID is a number indicating the user (which is common when connecting to the Internet 12A using any of the terminals 11A, and is previously stored in the content server 1).
3A). In the user identification number conversion system 10 of the present invention, the user identification number ID is
It is set to an alphanumeric string composed of "3 alphabets + 5 digits" like "ABC12345", and the alphanumeric string of the set composition is input to the terminal 11A. Also, "111" generated by converting the alphabetic characters of the alphanumeric string into numbers according to a predetermined rule (shown in FIG. 2).
11-digit number string such as "21312345"
You can also type in A. The configuration of the user identification number ID is set in advance on the side of the content server 13A. The user determines the user identification number ID of an alphanumeric string determined based on the set configuration (hereinafter, referred to as “setting configuration”) or the setting configuration and the alphanumeric-corresponding display table 16 shown in FIG. The user identification number ID of the digit string is input to the terminal 11A.

The alphanumeric display table 16 has 14 alphanumeric characters.
And information indicating each of the alphabetic-character corresponding numbers 15 are stored, and these pieces of information are associated with each other. In FIG.
It has been shown that each of the letters A to J corresponds to each of the numbers 11 to 20 (each number consists of two digits), but for each of the letters K to Z. But likewise,
A certain number corresponds. Similarly, when the user identification number ID includes lowercase letters, a specific number corresponds to each of those letters. The letter 15 corresponding to the alphabet shown in FIG. 2 is an example and is not limited to this form. The alphanumeric display table 16 is distributed to the user from a vendor who manages the content server 13A in advance. Or
The alphanumeric display table 16 is stored in the content server 13A as will be described later, and thus may be in the form of (A). (A) The user previously outputs a user identification number ID of an alphanumeric string and a conversion request signal CS requesting conversion of the alphanumeric string to a numerical string from the terminal 11A to the content server 13A. Content server 13A
Converts the user identification number ID of an alphanumeric string input from the terminal 11A into a user identification number ID of a numerical string based on the alphanumeric display table 16 and outputs it to the terminal 11A so that the user can enter the numerical string. The user identification number ID is notified.

The configuration of the user identification number ID set by the content server 13A is not limited to the above-mentioned form, but includes an alphabetic character string. It is also possible to arbitrarily set the configuration on the user side and use the user identification number ID determined based on the set configuration. In that case, the asterisk button 1 provided on the terminal 11A
An asterisk (*) input by 1B, a sharp (#) input by the sharp button 12B, or the like is set as a symbol (hereinafter, referred to as a "delimiter") indicating a delimiter of the character string. For example, the user may change the user identification number ID to "two-digit alphabet +" AB1312345 ".
When it is set to one consisting of "7-digit number", the alphabetic character is converted to a number to generate a user identification number ID such as "1112 * 1312345", and the generated user identification number ID is the terminal. It is input to 11A.

FIG. 3 shows a block diagram of the content server 13A. The content server 13A includes a storage unit 13
a, a user identification number determination unit 13b, a user identification number conversion unit 13c, and a password verification unit 13d.

The storage unit 13a has an alphanumeric character corresponding display table 16 shown in FIG. 2, a user identification number / password corresponding display table 17 shown in FIG. 4, and a corresponding cipher display table 20 shown in FIG. The user identification number / password correspondence display table 17 includes a user identification number ID,
Information indicating each of the passwords PW is stored, and these pieces of information are associated with each other. Corresponding code display table 20
Stores information indicating each of the alphanumeric characters 18 and the cipher 19, and associates these pieces of information. In FIG. 5, it is shown that one cipher corresponds to each of the letters A to C and each of the numbers 1 to 3, but each of the letters D to Z and 4 Similarly, a specific number corresponds to each of the numbers ~ 9 and 0. Similarly, when the user identification number ID includes lowercase English letters,
There is a specific number for each of those letters. Figure 5
The cipher 19 shown in is an example, and is not limited to this form.

The user identification number judging section 13b is provided in the terminal 11
User identification number I from A via network 12A
Each of D, the password PW, and the request information signal DS is input, and it is determined whether the input user identification number ID is an alphanumeric string or a numeric string. When the determination result is the number string, the user identification number determination unit 13b outputs each of the input number string, the password PW, and the request information signal DS to the user identification number conversion unit 13c. On the other hand, when the determination result is an alphanumeric string, the user identification number determination unit 13b outputs each of the input alphanumeric string, password PW, and request information signal DS to the password verification unit 13d. The user identification number conversion unit 13c generates an alphanumeric string by converting the setting part of the numeric string input from the user identification number determination unit 13b into an alphanumeric string by referring to the alphanumeric correspondence display table 16, and generates the alphanumeric string. The alphanumeric string is output to the password verification unit 13d. This setting part is (1)
It is stored in advance in the storage unit 13a as "upper 3 digits of an 8-digit number", or (2) user identification number conversion unit 1
3c determines either by the position of the delimiter included in the input user identification number ID.

When the conversion request signal CS and the user identification number ID of the numerical string are input from the terminal 11A, the user identification number converting section 13c identifies the user of the numerical string based on the alphanumeric character display table 16. The number ID is converted into a user identification number ID of an alphanumeric string. Further, the user identification number conversion unit 13c outputs the converted user identification number ID to the terminal 11A.

The password collating unit 13d receives the password from the user identification number determining unit 13b or the user identification number converting unit 13c.
The user identification number ID in the alphanumeric string, the password PW, and the request information signal DS are input. Further, the password collation unit 13d searches the user identification number / password correspondence display table 17 for a user identification number ID that matches the input user identification number ID. When the matching user identification number ID is extracted as a result of the search, the password matching unit 13d matches the password PW corresponding to the user identification number ID with the input password PW. If the passwords PW match as a result of the collation, the password collation unit 13d encrypts the user identification number ID corresponding to the password PW based on the corresponding cipher display table 20 to obtain the encrypted user identification number SID. To generate. Further, the password verification unit 13d outputs the generated encrypted user identification number SID and the first information to the terminal 11A.
By the above processing of the password collation unit 13d, the user is authenticated.

The encrypted user identification number SID is used to send the request information signal DS for requesting the second information by the user to the terminal 11A.
Is output together with the password collation unit 13d. At this time, the password verification unit 13d performs the following process (B). (B) The input encrypted user identification number SID is set to the corresponding encryption display table 20.
A user identification number ID is generated by decrypting the user ID. Further, the user identification number / password correspondence display table 17 is searched based on the user identification number ID generated by decryption. When the user identification number ID that matches the user identification number ID is extracted as a result of the search, the user identification number ID is encrypted again to generate the encrypted user identification number SID, and the generated encrypted user identification number is generated. The SID and the second information are output to the terminal 11A. Hereinafter, even when the user requests information other than the first information and the second information, the password collation unit 13d repeats the same processing as (B).

Hereinafter, with reference to FIG. 6, the user identification number conversion system 10 and the content server 13A of the present invention.
The process of the process related to the user identification number conversion method 10a using will be described. The user identification number conversion method 10a includes an authentication method performed by the content server 13A.

Each of the user identification number ID, the password PW, and the request information signal DS is input to the terminal 11A by the user's operation and is output to the content server 13A via the Internet 12A (step S1). The user identification number determination unit 13b uses the input user identification number I
It is determined whether D is an alphanumeric string or a numerical string. If the determination result is a number string, the user identification number determination unit 13b determines that the input number string and password P
W, request information signal DS, and user identification number conversion unit 1
Output to 3c. On the other hand, if the determination result is an alphanumeric string, the user identification number determination unit 13b outputs each of the input alphanumeric string, password PW, and request information signal DS to the password verification unit 13d (step S2). . The user identification number conversion unit 13c includes a user identification number determination unit 13
An alphanumeric string is generated by converting the setting part of the numeric string input from b into an alphanumeric string by referring to the alphanumeric correspondence display table 16, and the generated alphanumeric string is output to the password collating unit 13d (step S3).

The password collating unit 13d receives the password from the user identification number judging unit 13b or the user identification number converting unit 13c.
The user identification number ID in the alphanumeric string, the password PW, and the request information signal DS are input. Further, the password collation unit 13d searches the user identification number / password correspondence display table 17 for a user identification number ID that matches the input user identification number ID. When the matching user identification number ID is extracted as a result of the search, the password matching unit 13d matches the password PW corresponding to the user identification number ID with the input password PW. If the passwords PW match as a result of the collation, the password collation unit 13d encrypts the user identification number ID corresponding to the password PW based on the corresponding cipher display table 20 to obtain the encrypted user identification number SID. To generate. Further, the password verification unit 13d outputs the generated encrypted user identification number SID and the first information to the terminal 11A (step S4). The terminal 11A displays the first information,
Also, the encrypted user identification number SID is stored (step S5).

[0036]

The user identification number conversion system of the present invention,
Also, the authentication device makes it possible to easily input the user identification number when using a terminal with few input buttons or even a person who is unfamiliar with the operation of the terminal.

With the identification number conversion system and the authentication device of the present invention, it becomes possible to easily input the user identification number without significantly changing the conventional authentication system.

With the identification number conversion system and the authentication device of the present invention, it is possible to input either an alphanumeric string or a numeric string as the user identification number.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration relating to an identification number conversion system and an authentication device of the present invention.

FIG. 2 is a diagram showing information stored in an alphanumeric character corresponding display table according to the identification number conversion system and the authentication device of the present invention.

FIG. 3 is a block diagram showing a configuration of a content server according to the identification number conversion system and the authentication device of the present invention.

FIG. 4 is a diagram showing information stored in a user identification number / password correspondence display table according to the identification number conversion system and the authentication device of the present invention.

FIG. 5 is a diagram showing information stored in a corresponding cipher display table according to the identification number conversion system and the authentication device of the present invention.

FIG. 6 is a diagram showing a process of processing performed in the identification number conversion method of the present invention.

FIG. 7 is a diagram showing a configuration of an identification number conversion system of the present invention, an authentication device, and a mobile phone according to a conventional technique.

[Explanation of symbols]

10: Identification number conversion system 11A: terminal 12A: Internet 13A: content server ID: User identification number PW: Password DS: Request information signal SID: encrypted user identification number CS: Conversion request signal SC: Display information 13a: storage unit 13b: user identification number determination unit 13c: User identification number conversion unit 13d: Password verification unit 14: English 15: Numbers corresponding to English letters 16: Alphanumeric display table 17: User identification number / password correspondence display table 18: alphanumeric 19: Code 20: Corresponding code display table

Claims (14)

[Claims] 1. A terminal that outputs an identification number, and the identification number is a character string of any one of a numeric string and an alphanumeric string including the numeric string and an alphabetic string, and the identification output from the terminal. An identification number conversion system, comprising: a conversion unit which, when the number is the numerical string, converts the set portion of the numerical string into the alphabetic character string to generate the alphanumeric character string. 2. The identification unit output from the terminal further includes a determination unit that determines which of the character strings is included, and the conversion unit includes an identification output from the terminal. The identification number conversion system according to claim 1, wherein when the number is determined to be the numerical string, the setting portion is converted to the alphabetic character string to generate the alphanumeric character string. 3. The table further comprises a table that associates the numbers included in the setting portion with the alphabetic characters included in the alphabetic character string, and the conversion unit refers to the table to convert the numbers into the alphabetic characters. The identification number conversion system according to claim 1 or 2, wherein the alphanumeric string is generated by. 4. The identification number conversion system according to claim 1, wherein the identification number indicates a user of the terminal. 5. A conversion unit, which is output from the terminal and converts the setting part of the first identification number, which is a numeric string, into an alphanumeric string to generate an alphanumeric string including the numeric string and the alphanumeric string, The terminal outputs the first identification number and the second identification number, and searches the alphanumeric string from the first table for associating the second identification number with the alphanumeric string. A second identification number corresponding to the extracted alphanumeric string and the output second identification number when the alphanumeric string that matches the generated alphanumeric string is extracted as a result of the search. And an authentication unit for authenticating the user of the terminal when the second identification numbers to be collated match each other as a result of the collation. 6. The determination according to which the first identification number is a character string of the numeral string or the alphanumeric character string, and which of the character strings is output as the first identification number. The conversion unit converts the set portion into the alphanumeric string and converts the alphanumeric characters into alphanumeric characters when the determination unit determines that the output first identification number is the numeric character string. The authentication device according to claim 5, wherein a column is generated, and the authentication unit searches the first table based on the generated alphanumeric string. 7. The first table based on the output alphanumeric string when the determination unit determines that the first identification number to be output is the alphanumeric string. The authentication device according to claim 5, which searches for. 8. The apparatus further comprises a second table for associating the numbers included in the setting portion with the alphabets included in the alphabet string, and the conversion unit refers to the second table to convert the numbers into the alphabets. The authentication device according to claim 5, wherein the alphanumeric string is generated by converting the alphanumeric string. 9. The authentication device according to claim 5, wherein an identification number including one of the first identification number and the second identification number indicates a user of the terminal. 10. A plurality of buttons, and each of the plurality of buttons outputs either a set number or a plurality of set alphabetic characters, a number string generated based on the output set number, and the A terminal comprising: a transmission unit for transmitting either an alphanumeric string generated based on the output set number and the output set alphabet. 11. A step of outputting an identification number, wherein the identification number is any one of a numeric string and an alphanumeric string including the numeric string and an alphabetic string, and the output identification number is the numeric string. And a step of converting the set part of the numeric string into the alphanumeric string to generate the alphanumeric string. 12. The method further comprises a step of determining whether the output identification number is the numeric string or the alphanumeric string, and the output identification number is determined to be the numeric string. The identification number conversion method according to claim 11, wherein the setting portion is converted into the alphabetic character string to generate the alphanumeric character string. 13. The identification number conversion method according to claim 11, wherein the identification number indicates a user of the terminal. 14. A first string which is a number string output from a terminal
Generating an alphanumeric string including the numeric string and the alphanumeric string by converting the set part of the identification number into an alphanumeric string; and the terminal outputting the first identification number and the second identification number. Then, when the alphanumeric string is searched from the table that associates the second identification number with the alphanumeric string, and the alphanumeric string that matches the generated alphanumeric string is extracted as a result of the search. , The second identification number corresponding to the extracted alphanumeric string and the output second identification number are collated, and when the collated second identification numbers match each other as a result of the collation, the A method of authenticating a user of a terminal.