JPH09114785A - Method and device for generating password - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate an easily memorizable and safe password in the authentication of a user by the password. SOLUTION: Based on a sentence inputted by an input/output means 101, a candidate password is generated by replacing words and taking out a candidate password character string in a candidate password generation means 102 and it is presented to the user by a presentation means 103. Then, when the user approves the presented candidate password, the candidate password is set as the password by a password setting means 104. Since the candidate password is generated based on the sentence inputted by the user and presented and the specified candidate password is set as the password, the safe password easily memorizable for the user to be hardly illegally used is automatically generated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a password generation method and device for generating a password used for authenticating a user in an information processing device.

[0002]

2. Description of the Related Art Conventionally, a password is used in an information processing apparatus such as a computer system to authenticate a user who uses the information processing apparatus, and a malicious user uses the information processing apparatus. Attempts to learn someone else's password using various means. On the other hand, legitimate users (hereinafter simply referred to as users) are taking measures.

The following are the main means for obtaining a password. It is commonly known as "smashing", "known word", "dependent information", etc. The outline of each will be described below.

[0004] The "whitewash" method tries all combinations of characters that can be used as a password, and as a countermeasure against this, the number of combinations forming a password may be increased. In other words, by increasing the number of characters and increasing the character types by including numbers and symbols in the password, the number of combinations can be increased and the actual decipherability can be reduced.

The "known word" method is, for example, a method of sequentially testing the entry words of the dictionary. For this, it is recommended to use a word that does not exist in the dictionary, that is, a random character string, as the password.

[0006] The "dependent information" method is a method of trying such a character string by utilizing the fact that the user's first and last name, date of birth, etc. are often used as a password.
Again, it is sufficient not to use such a meaningful character string as the password.

Further, although it is not a means for obtaining a password, the same password can be used for a long period of time.
This increases the possibility that a malicious user will get to know the password. In other words, if the same password is used for a long time, it takes more time for a malicious user to get the password.
There is a high risk that the password will be known by law. In addition, once the password is known, including the case where two or three passwords are used alternately, the period in which the password is abused becomes long.

[0008] Conventionally, as a means for countering the knowledge of the password by these malicious users, the user is required to input an arbitrary character string, and the password is checked to find a character or symbol having a small number of characters. For example, a password that does not exist or the same as the previous password is not accepted, and a random character string is generated on the computer side, and the user stores the random character string for use.

[0009]

However, when the method for eliminating inappropriate passwords such as those with a small number of characters is used, it takes time for the user to obtain an appropriate password. was there.

In addition, the random password generated on the computer side requires the user to store a random character string, but it is generally difficult for the user to store a random character string. In the end, there was also the problem of allowing a simple password and sacrificing security.

Further, there is a problem in that the password of a password that is difficult to remember is forced so that the administrator of the computer must take the trouble to process the user who has forgotten the password.

Therefore, the present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a password generating method and device which can be easily stored and which can generate a secure password in a short time. That is.

[0013]

In order to solve the above-mentioned problems, the invention described in claim 1 is an input step of inputting a sentence, and a password candidate to be set based on the input sentence. A candidate password generating step of generating a candidate password that is, a presenting step of presenting the generated candidate password, a setting step of setting a candidate password designated based on a designation signal input from the outside as the password, It is configured with.

According to the operation of the invention described in claim 1, a sentence is input in the input step. Then, in the candidate password generation step, a candidate password is generated based on the input sentence.

After that, in the presenting step, the generated candidate password is presented. Finally, in the setting process,
The designated candidate password is set as the password based on the designation signal input from the outside.

Therefore, since the candidate password is generated and presented based on the text input by the user and the designated candidate password is set as the password, it is easy for the user to remember and is safe from being stolen. A new password can be automatically generated.

In order to solve the above-mentioned problem, the invention according to claim 2 is to input a sentence and to generate a candidate password which is a candidate for a password to be set based on the inputted sentence. A candidate password generating step, a presenting step of presenting the generated candidate password, a changing step of changing the presented candidate password based on a change signal input from the outside, and generating a change candidate password; And a setting step of setting, as the password, a change candidate password designated based on a designation signal input from the outside.

According to the operation of the invention described in claim 2, a sentence is input in the input step. Then, in the candidate password generation step, a candidate password is generated based on the input sentence.

Then, in the presenting step, the generated candidate password is presented. And in the changing process,
Based on the change signal input from the outside, the presented candidate password is changed to generate a change candidate password.

Finally, in the setting step, the designated change candidate password is set as the password based on the designation signal input from the outside. Therefore, a candidate password is generated and presented based on the text entered by the user,
Since the change candidate password changed by the user from the presented candidate password is set as the password, it is possible to automatically generate a safe password that is easy for the user to remember and easy to steal.

In order to solve the above-mentioned problems, the invention according to claim 3 is based on an input / output means such as a keyboard for outputting a sentence signal corresponding to an inputted sentence, and the outputted sentence signal. A candidate password generating means such as a computer for generating a candidate password that is a candidate for a password to be set, a presenting means such as a display for presenting the generated candidate password, and designation based on a designation signal input from the outside. And a setting means such as a computer for setting the candidate password as a password.

According to the operation of the invention described in claim 3, the input / output means outputs the sentence signal corresponding to the inputted sentence. Then, the candidate password generation means generates a candidate password based on the output text signal.

After that, the presenting means presents the generated candidate password. Finally, the setting means sets the designated candidate password as the password based on the designation signal input from the outside.

Therefore, since the candidate password is generated and presented based on the sentence input by the user and the designated candidate password is set as the password, it is easy for the user to remember and is safe from being stolen. A new password can be automatically generated.

In order to solve the above problems, the invention according to claim 4 is the password generating device according to claim 3, wherein the candidate password generating means generates a plurality of different candidate passwords from one sentence. Configured to generate.

According to the invention set forth in claim 4, according to claim 3,
In addition to the effect of the invention described in (1), the candidate password generation means generates a plurality of different candidate passwords from one sentence.

Therefore, since a plurality of candidate passwords are generated from one sentence, it is possible to specify passwords from a larger number of candidate passwords, and thus it is possible to generate a safe password that is harder to be stolen.

In order to solve the above-mentioned problems, the invention according to claim 5 is the password generation device according to claim 3 or 4, wherein the candidate password generation means uses the candidate passwords generated up to the previous time. A recording unit such as a magnetic disk for recording is further provided, and is configured to generate a candidate password different from the candidate passwords generated so far based on the same sentence signal.

According to the operation of the invention described in claim 5, in addition to the operation of the invention described in claim 3 or 4, the storage means included in the candidate password generation means is a candidate password generated up to the previous time. To record.

Then, the candidate password generating means generates a candidate password different from the candidate passwords generated so far based on the same sentence signal. Therefore, since the same password is not set even if the same sentence is input, it is possible to generate a secure password that is harder to be stolen.

In order to solve the above-mentioned problems, the invention according to claim 6 is the password generation device according to any one of claims 3 to 5, wherein the candidate password generation means receives the input It is configured to combine the leading characters of the respective words forming the sentence to generate the candidate password.

According to the operation of the invention described in claim 6, in addition to the operation of the invention described in any one of claims 3 to 5, the candidate password generation means constitutes each of the inputted sentences. Generate a candidate password by combining the first letters of the words.

Therefore, since the password is set based on each word in the sentence input by the user, it is possible to set a password that is easier for the user to remember. In order to solve the above problems, the invention according to claim 7 is the password generation device according to any one of claims 3 to 6, wherein the candidate password generation means is:
The candidate password is generated by replacing a plurality of characters corresponding to the ending of a predetermined word with a predetermined symbol in each of the words forming the input sentence.

According to the action of the invention described in claim 7, in addition to the action of the invention described in any one of claims 3 to 6, the candidate password generation means respectively constructs the inputted sentence. A candidate password is generated by replacing a plurality of characters corresponding to the ending of a predetermined word with a predetermined symbol.

Therefore, the password is set based on each word in the sentence entered by the user and by replacing a plurality of characters corresponding to the ending of a predetermined word with a predetermined symbol, so that it is more convenient for the user. Easy to remember,
In addition, it is possible to generate a secure password that is hard to be stolen.

In order to solve the above problems, according to the invention described in claim 8, in the password generation device according to any one of claims 3 to 7, the candidate password generation means is input. In addition, it replaces a predetermined word set in advance among a plurality of words constituting the sentence with a predetermined symbol set in advance, and combines the replaced symbols to generate the candidate password. .

According to the operation of the invention described in claim 8, in addition to the operation of the invention described in any one of claims 3 to 7, the candidate password generation means includes a plurality of constituents of the input sentence. Among the words, the preset predetermined word is replaced with the preset predetermined symbol, and the replaced symbols are combined to generate the candidate password.

Therefore, since the preset password is generated by replacing the preset word with the preset symbol, it is possible to generate a safe password that is less likely to be stolen.

In order to solve the above-mentioned problems, an invention according to claim 9 is based on an input / output means such as a keyboard for outputting a sentence signal corresponding to an inputted sentence and the outputted sentence signal. A candidate password generating means such as a computer for generating a candidate password which is a candidate for a password to be set, a presenting means such as a display for presenting the generated candidate password, and the presenting based on a change signal inputted from the outside. Change means for changing the candidate password to generate a change candidate password, and setting means for setting a change candidate password designated based on a designation signal input from the outside as the password. Consists of

According to the ninth aspect of the invention, the input / output means outputs the sentence signal corresponding to the inputted sentence.
Then, the candidate password generation means generates a candidate password based on the output text signal.

After that, the presenting means presents the generated candidate password. Then, the changing unit changes the presented candidate password based on the change signal input from the outside to generate a change candidate password.

Finally, the setting means sets the change candidate password designated based on the designation signal inputted from the outside as the password. Therefore, the candidate password is generated and presented based on the sentence entered by the user, and the change candidate password obtained by the user changing the presented candidate password is set as the password, which is easy for the user to remember. Moreover, it is possible to automatically generate a secure password that is hard to be stolen.

[0043]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. (I) Principle Before explaining specific embodiments, the principle of the present invention will be described with reference to FIG.
This will be described with reference to FIG.

As shown in FIG. 1, the password generating apparatus according to the present invention has an input / output means 101 for outputting a sentence signal corresponding to an inputted sentence and a password to be set based on the outputted sentence signal. Candidate password generating means 102 for generating a candidate password that is a candidate, presenting means 103 for presenting the generated candidate password, and setting for setting a designated candidate password as a password based on a designation signal S _C input from the outside. Means 104,
It is comprised including.

In this structure, the candidate password is generated and presented based on the sentence input by the user,
By setting the designated candidate password as the password, it is possible to generate a secure password that is easy for the user to remember and hard to steal. (II) Embodiment Next, a specific embodiment corresponding to the invention described in claims 1, 3 to 8 will be described with reference to FIGS. 2 to 8.

First, the structure of the password generation device according to the present invention will be described with reference to FIG. As shown in FIG. 2, the password generation device S according to the present invention includes a keyboard 201 as an input / output unit, a computer 202 as a candidate password generation unit and a setting unit, a display 203 as a presentation unit, and a storage unit. Magnetic disk 204 of FIG.

Next, the outline of the operation will be described. First, the user inputs a sentence from the keyboard 201 and the computer 2
The output from 02 is displayed on the display 203. The magnetic disk device 204 stores a word conversion table 402 described later, a password checking dictionary, or data such as passwords created so far.

This system also includes a network 20.
5, it is connected to the outside and can be used from the outside as well as accessible by a malicious user. In the present invention, based on a sentence previously entered by the user, a candidate password that can be easily analogized from the sentence is generated, and the candidate password is presented to the user in a format corresponding to the entered sentence, and used. The feature is that it assists the person in remembering a candidate password specified as a password. This is as shown in FIG.
This is realized by processing the input sentence, creating a candidate password, presenting the candidate password, and finally setting the candidate password designated by the user as the password.

Next, the specific operation will be described with reference to FIGS.
This will be described with reference to FIG. The following series of processing is mainly performed in the computer 202. First, the user is prompted to input an arbitrary sentence (step S301). As an example, assume that the following sentence 401 is input (see reference numeral 401 in FIG. 4A).

[Never make anythin
g simple and effective wh
en a way can be found tom
ake it complex and wonder
ful. The candidate password is generated by the following process based on this sentence, but the generated candidate password needs to be easily inferred from the original sentence 401.
Therefore, in this embodiment, basically, the original sentence 401
The first character of each word constituting is used as a character in the password.

However, with this alone, most of the letters will be in lowercase letters, and the probability that the password will be known by the "exhaustive crushing" method becomes high. Therefore, when generating the candidate password, symbols and numbers are appropriately inserted.

When the sentence 401 is input (step S3)
01), and then word conversion is performed (step S30).
2). The word conversion process in step S302 is
Words that appear frequently in English, such as "a" and "the",
It replaces the symbol.

Since "a", "the", etc. are found in relatively many sentences, if these words are taken into the candidate password, "a" or "t" will be generated in the generated password.
There are many letters such as. In addition, when using the first letter of an abbreviation or the like, "a" and "the" are often ignored, so they are not very useful for storing passwords. Therefore, since "a" and "the" have low value in password generation, they are replaced with symbols or numbers having higher value, that is, contributing to safety and maintainability.

Furthermore, in the case of English, a specific pattern may appear at the end of a word. For example, "-ing"
Or "-er". In the present embodiment, since the first character of the word is used as the character in the password, the last part of the password is also
Low utility value. Therefore, the above character strings that often appear as endings are replaced with symbols.

Here, as the processing of step S302,
Specifically, a case of converting the input sentence 401 using the conversion table 402 shown in FIG. 4B will be described in detail with reference to FIG.

In step S302, first, initial setting is performed (steps S501 and S502), and then,
Each word in the sentence 401 is cut out according to a space or a symbol (step S503), and the character position is advanced (step S504). Then, it is determined whether the character can be cut out (step S505), and if it cannot be cut out (step S505).
505; NO) If the password cannot be generated as it is, the process ends, and if the process can be cut out (step S50).
5; YES), each extracted word is compared with the key of the conversion table 402 (step S506). At the time of this comparison, the key with "-" at the beginning of each key in the conversion table 402 is compared with the ending part of each word cut out, and the one without "-" at the beginning is the cut out word. It should be compared with itself.

If there is a word that matches the key of the conversion table 402 among the extracted words (step S506;
If YES, the word is replaced with the value in the conversion table 402 corresponding to the key that matches the word (step S507). Further, words and symbols that have no matching key in the conversion table 402 (step S506; NO) are used as they are. Then, these conversion results are output together with the character position (step S508).

Here, at the time of conversion, at the same time, record where the converted character corresponds to the sentence before conversion. This is to show which character corresponds to which word in the sentence when the generated candidate password is presented to the user. More specifically, each character is associated by adding data indicating the number of characters from the beginning of the original sentence.

When the sentence 401 is converted according to the conversion table 402 by the processing of step S302, the following character string 403 is obtained (see reference numeral 403 in FIG. 4C). "Nev1 make anth # simple
& Effective when @ way ca
n be found $ make; complete
x & wonder%. "

When the word conversion is completed and the character string 403 is generated (step S302), next, a candidate password character string is extracted from the converted character string 403 (step S303).

Here, in the processing of step S303, if the same sentence 401 is given, if the same candidate password character string is created, a malicious user may infer the generation procedure. It is desirable that a different candidate password character string is generated even when the sentence 401 is given.

Therefore, when extracting this candidate password character string, a random number is used to select or change the character to be extracted. Next, details of the processing in step S303 will be described with reference to FIG.

In step S303, as shown in FIG. 6, first, predetermined initialization is performed (step S60).
1, S602). Next, in step S302, a word, symbol, or numeral is extracted from the converted character string 403 (step S603), and the character position is advanced (step S604). Then, it is determined whether or not the word, symbol, or number can be cut out (step S605), and if it cannot be cut out (step S605; NO), the process ends as it is because the password cannot be generated. (Step S605; YES), it is determined whether or not the next cut out is a symbol (step S606). If it is not a symbol (step S606; NO), then it is determined whether or not the cut out is a number (step S607).
If it is not a number (step S607; N
O), it is assumed that the cut out is a word, and the leading character thereof is taken out (S608). On the other hand, if it is a symbol (step S606; YES) or if it is a number (step S607; YES), the symbol or number itself is taken out.

Next, the words, symbols or numbers taken out are used, not used or changed according to the determined probability. For example, in the case of the first character of a word, 70% of the extracted words are used as they are, 10% of them are exchanged between uppercase and lowercase, and 20% are not used. Similarly, out of the numbers taken out, 30% is used as it is and 70% is not used. Of the symbols taken, 30% are used as they are and 70% are not used.

Then, for each of the symbols, numbers, and words, a random number in which an integer value of 0 to 9 is generated with equal probability is generated (steps S609-1 and S60).
9-2, S609-3). In the case of a symbol, if the generated random number is less than “3” (step S610; YES), it is used as it is and the process proceeds to step S615. Otherwise (step S610; NO), the symbol is not used. And step S60 to retrieve the next character
Return to 2.

Similarly, in the case of a numeral, if the generated random number is less than “3” (step S611; YES), it is used as it is and the process proceeds to step S615, otherwise (step S611; NO) the numeral. Becomes unused and returns to step S602 to retrieve the next character.

In the case of a word, if the generated random number is less than "2" (step S612; YE).
S), the word is no longer used and the process returns to step S602 to retrieve the next character. On the other hand, if the generated random number is not less than “2” (step S612; N
O), it is then determined whether or not the generated random number is "2" (step S613), and if it is "2" (step S613; YES), the upper and lower case letters are exchanged (step S614), and " If it is not "2" (step S
613; NO), step S6 assuming that it is used as it is.
Move to 15.

Finally, the word, symbol or numeral decided to be used by the above processing is output together with its character position (step S615). After that, the process returns to step S602 to retrieve the next character.

By performing the above processing on all the characters in the character string 403, for example, the following candidate password character string is obtained. "N1m A # sew @ W cbfm; C &w."

At this time also, the correspondence with the original sentence 401 is made (see reference numeral 404 in FIG. 8).

When the candidate password character string is obtained in the above processing, the candidate password is then cut out from the obtained candidate password character string (step S30).
4). Here, in this embodiment, the candidate password is assumed to be a character string of up to 8 characters.

In the cutout in step S304,
Simply take 8 consecutive characters from the beginning of the candidate password string. This is because it is difficult for the user to remember if the order is changed from the original sentence 401.

Then, the first candidate password becomes "N1m A # se" and the second candidate password becomes "1m A # sew".

Next, when the candidate password can be cut out (YES in step S305), it is determined whether or not this candidate password is actually set (employed) as a password (step S306). If the candidate password cannot be cut out because the candidate password character string is short (step S305; NO), it is determined that the password cannot be generated (step S311), and the process for inputting the text next is performed. finish.

Details of the processing in step S306 will be described below with reference to FIG. In step S306, first, the number of character types in the candidate password is counted (step S701), and it is determined whether the character type is four or more types (step S702). If the number of character types is less than four (step S702; N
O), it is assumed that the candidate password is not a safe candidate password. If there are four or more character types (step S702; YES), then the candidate password is searched in the dictionary stored in the magnetic disk 204 (step S703), and the matching word is found in the dictionary. It is determined whether there is any (step S704). If there is a matching word in the dictionary (step S704; YE
S), the candidate password is not a safe candidate password. If the matching word is not in the dictionary (step S704; NO), the candidate password is considered to be safe.

If it is determined in step S306 that the password is not a secure candidate password (step S30).
7; NO), and returns to step S304 to cut out the next candidate password from the candidate password character string.

If it is determined in step S306 that the password is a safe candidate password (step S307; Y).
ES), and presents the candidate password to the user by displaying it on the display 203 (step S30).
8) Then, the user is made to determine whether or not to approve the candidate password as a password by using the input from the keyboard 201 (step S309). In other words, after a series of checks, it is confirmed whether the generated candidate password is a password that is easy for the user to remember.

When the candidate password is presented to the user (step S308), the display 404 shown in FIG. 8 is displayed on the screen from the candidate password and the information indicating the position in the original sentence 401 for generating the candidate password. Output.

If the user does not approve this candidate password (step S309; NO), the next candidate password is cut out (step S304) and the same processing is performed. Here, if the user's approval is not obtained for all the candidate passwords, the password cannot be created from the given sentence 401, so the user is required to enter another sentence.

When it is found by the designation signal S _C from the keyboard 201 that the displayed candidate password is approved (step S309; YES), the candidate password is adopted as a new password (step S3).
10), end the process.

As described above, according to the process in the password generation device of the embodiment, the candidate password is generated and presented based on the sentence input by the user, and the designated candidate password is set as the password. ,
It is possible to automatically generate a secure password that is easy for the user to memorize and hard to steal. (III) Modification Note that the present invention is not limited to the above embodiment, and modifications corresponding to the inventions described in claims 2 and 9 as described below are possible.

That is, in the above embodiment, the user can only select whether to approve or reject the presented password. Therefore, it is possible to allow the user to change the presented password by inputting from the keyboard 201.

By making the candidate password changeable, it becomes possible to generate a password that is easier for the user to remember. However, in this case, since the password may be changed so as to impair the security and integrity, it is necessary to check again the password changed by the user (see step S306).

Furthermore, in the above-mentioned embodiment, the sentence to be input is an English sentence, but a Japanese sentence may be used. For example, if you want to enter a sentence in Roman text, "kyou ha totemo ii ten
It becomes a sentence such as "ki desu". Of course, in this case, since the frequency of use of the word is different from that in the case of English, the conversion table 402 is different. For example, "te", "n"
A conversion table that replaces "i", "wo", "ha", etc. with symbols will be used.

With these modifications, it is possible to easily generate a password that is easy for the user to remember and highly secure.

[0086]

As described above, according to the invention described in claim 1, the candidate password is generated and presented based on the sentence input by the user, and the designated candidate password is set as the password. Therefore, it is possible to automatically generate a secure password that is easy for the user to remember and hard to steal.

According to the second aspect of the present invention, the candidate password is generated and presented on the basis of the sentence input by the user, and the changed candidate password obtained by the user changing the presented candidate password is used as the password. Since I will set
It is possible to automatically generate a secure password that is easier for the user to remember and hard to steal.

According to the third aspect of the present invention, the candidate password is generated and presented based on the sentence input by the user, and the designated candidate password is set as the password. It is possible to automatically generate a secure password that is easy to use and hard to steal.

According to the invention of claim 4, claim 3
In addition to the effect of the invention described in (1), since multiple candidate passwords are generated from one sentence, it is possible to specify passwords from more candidate passwords, and thus to generate a secure password that is more difficult to be stolen. You can

According to the invention of claim 5, claim 3
Alternatively, in addition to the effect of the invention described in 4, since the same password is not set even if the same sentence is input, it is possible to generate a secure password that is harder to be stolen.

According to the invention of claim 6, claim 3
In addition to the effect of the invention described in any one of 1 to 5, a password is set based on each word in the sentence entered by the user, so a password that is easier for the user to remember should be set. You can

According to the invention of claim 7, claim 3
In addition to the effect of the invention described in any one of 1 to 6, in addition to being based on each word in the sentence input by the user,
Since the password is set by replacing a plurality of characters corresponding to the ending of a predetermined word with a predetermined symbol, it is possible to generate a secure password that is easier for the user to remember and easy to steal. .

According to the invention of claim 8, claim 3
In addition to the effect of the invention described in any one of 1 to 7, a preset password is generated by replacing a predetermined word set in advance with a predetermined symbol set in advance, so a safe password that is harder to be stolen Can be generated.

According to the ninth aspect, the candidate password is generated and presented based on the sentence input by the user, and the change candidate password obtained by the user changing the presented candidate password is set as the password. Therefore, it is possible to automatically generate a secure password that is easy for the user to remember and hard to steal.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the principle of the present invention.

FIG. 2 is a block diagram showing the configuration of a password generation device according to the embodiment.

FIG. 3 is a flowchart showing a password generation process of the embodiment.

FIG. 4 is a diagram showing an example of word conversion in step S302.

FIG. 5 is a flowchart showing a word conversion process.

FIG. 6 is a flowchart showing a process of extracting a candidate password character string.

FIG. 7 is a flowchart showing a candidate password check process.

FIG. 8 is a diagram showing a display example of a candidate password.

[Explanation of symbols]

 101 ... Inputting means 102 ... Candidate password generating means 103 ... Presenting means 104 ... Password setting means 201 ... Keyboard 202 ... Computer 203 ... Display 204 ... Magnetic disk 205 ... Network

Claims (9)

[Claims] 1. An input step of inputting a sentence, a candidate password generation step of generating a candidate password that is a candidate for a password to be set based on the input sentence, and presenting the generated candidate password. A password generating method comprising: a presenting step; and a setting step of setting a candidate password designated based on a designation signal input from the outside as the password. 2. An input step of inputting a sentence, a candidate password generating step of generating a candidate password that is a candidate for a password to be set based on the input sentence, and presenting the generated candidate password. A presenting step, a changing step of changing the presented candidate password based on a change signal input from the outside to generate a change candidate password, and a change candidate password designated based on a designation signal input from the outside. A password generation method comprising: a setting step of setting the password. 3. Input / output means for outputting a sentence signal corresponding to an input sentence, and candidate password generation means for generating a candidate password that is a candidate for a password to be set based on the output sentence signal. A password generating apparatus comprising: a presenting unit that presents the generated candidate password, and a setting unit that sets a candidate password designated based on a designation signal input from the outside as the password. 4. The password generation device according to claim 3, wherein the candidate password generation means generates a plurality of different candidate passwords from one sentence. 5. The password generation device according to claim 3, wherein the candidate password generation means further comprises recording means for recording the candidate passwords generated up to the previous time, and based on the same sentence signal. A password generation device which generates a candidate password different from the candidate passwords generated so far. 6. The password generation device according to claim 3, wherein the candidate password generation unit combines the leading characters of respective words forming the input sentence, A password generation device characterized by generating a candidate password. 7. The password generation device according to claim 3, wherein the candidate password generation means adds the ending of a predetermined word among the words constituting the input sentence. A password generating apparatus, wherein the candidate password is generated by replacing a plurality of corresponding characters with a predetermined symbol. 8. The password generation device according to claim 3, wherein the candidate password generation means selects a preset predetermined word from among a plurality of words constituting the input sentence. A password generation device characterized in that a word is replaced with a predetermined symbol set in advance and the candidate password is generated by combining the replaced symbols. 9. Input / output means for outputting a sentence signal corresponding to an inputted sentence, and candidate password generating means for generating a candidate password which is a candidate for a password to be set based on the outputted sentence signal. Presenting means for presenting the generated candidate password, changing means for changing the presented candidate password based on a change signal input from the outside to generate a change candidate password, and designation signal input from the outside A password generation device comprising: a setting unit configured to set a change candidate password specified based on the password as the password.