JPH079617B2 - Computer password processing apparatus and password processing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer password processing apparatus and password processing method.

[0002]

2. Description of the Related Art Conventionally, many personal computers have a password checking security function. This is to store the standard password set by the user in a backup RAM in advance, and then allow the system to start only when the entered password and the stored standard password can be confirmed. And so on.

However, a computer having this security function has the following problems. That is, the backup RAM for storing passwords that many computers have has a strict limitation on the storage area of the reference password in order to keep the power consumption low. Therefore,
The length of password that can be set is limited. Further, the password input by the user is stored in the backup RAM for password storage as it is without any modification. Therefore, unauthorized password analysis is relatively easy.

In addition, if the user forgets the password set by him / her, or if there is a situation in which he / she has to use the computer urgently when the user is absent, there is another method for immediately responding. There wasn't.

In particular, if the user forgets the password, he / she can open the computer's cab and remove the battery mounted in the backup RAM.
It is necessary to erase the contents in the backup RAM. Therefore, the user is forced to perform a very troublesome work.

[0006]

SUMMARY OF THE INVENTION The present invention is intended to solve such problems, and it is possible to reduce the restriction on the length of a password and prevent unauthorized analysis of the password. The purpose is to provide a processing method.

It is another object of the present invention to provide a password processing device and a password processing method for a computer in which the user can easily recover the password even if the user forgets the registered password.

[0008]

In order to achieve the above-mentioned object, the computer password processing apparatus of the present invention is
In a password processing device of a computer, an input means for inputting a password to be registered and a password to be compared with the registered password, and a first converting the registered password input by the input means into a compressed bit string according to a predetermined rule. Conversion means, storage means for storing the compressed bit string of the registered password converted by the first conversion means, the comparison password input by the input means, and a rule held by the first conversion means Second conversion means for converting into a compressed bit string according to the same rule, and the compressed bit string of the comparison password converted by the second converting means and the compressed bit string of the registered password stored in the storage means are compared. As a result of comparison by the comparison means and the comparison means, the compressed bit strings match each other. If you, characterized by comprising a means for setting said computer accessible.

In order to achieve the above-mentioned object, the computer password processing apparatus of the present invention further comprises, in the computer password processing apparatus, input means for inputting a password to be registered and a password to be compared with the registered password, According to an external application program, the storage means for storing the registration password and the registration password input by the input means
Means for storing in the storage means as a first registration password, and a registration password input from the input means,
A first registration password and a second registration password stored in the storage means, the means storing the second registration password in the storage means and the comparison password input by the input means according to a program in the computer. When the comparison password matches either the first registration password or the second registration password as a result of the comparison by the comparison means for comparing with both of the above, the computer is set to the accessible state. And a means for doing so.

[0010]

That is, in the present invention, when the operator inputs the registration password, the registration password is converted into a compressed bit string by the first converting means according to a predetermined rule and stored in the storage means. After that, in order to access the computer, the operator inputs a password (comparison password). This comparison password is converted by the second converting means into a compressed bit string according to the same rule as the rule of the first converting means. Then, the comparison password is compared with the compressed bit string of the registration password stored in the storage means by the comparison means. If it is determined that the compressed bit strings match as a result of this comparison,
The computer is set to be accessible.

Therefore, according to the present invention, by storing the registered password in the form of a compressed bit string, it is possible to reduce or eliminate the restriction on the length of the password.
In addition, it is possible to prevent illegal acts such as password analysis.

According to the present invention, the password input by the operator is stored in the storage means as the first registered password according to the program inside the computer, and the password input by the operator is stored according to the second application program according to the external application program. The registration password is stored in the storage means. After this, to access the computer,
When the operator inputs a password (comparison password), the comparison means compares the comparison password with the first and second registered passwords stored in the storage means.
Then, if it is determined that the comparison password matches the first registration password or the second registration password as a result of the comparison, the computer is set to the accessible state.

Therefore, according to the present invention, even if the operator forgets the first registration password registered by himself, he / she can use the computer by inputting the second registration password. . Further, for example, if the computer manufacturer or distributor sets and manages the second registration password, when the end user forgets the first registration password registered by the end user, the computer manufacturer or distributor can You can start using the computer without hassle by telling me the second registration password from the original.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a computer according to an embodiment of the present invention. As shown in the figure,
This computer has a BIOS / ROM (Basic Input
Output System Read Only Memory) 1, Backup R
AM2, system memory (main memory) 3, CPU
(Central Processing Unit) 4, display controller 5, keyboard controller 6, display 7,
It has a keyboard 8 and a system bus 9.

The BIOS / ROM 1 stores a setup program 1a, a system boot program 1b, and the like.

The backup RAM 2 is a volatile memory supplied with the backup power source VBK or EEPRO.
It consists of M etc. This backup RAM2 is a BIO
When the main power supply is turned off during the start-up period of S, the contents of the system memory 3 and the contents of each register in the CPU 4 are saved. The backup RAM 2 has a password area 2a for holding a password and a password flag, and a resume flag area 2b for holding a resume flag.

The system memory 3 stores various programs and data for data processing executed by the CPU 4. This system memory 3 is a BIOS / RO.
It is also used as a data area for M1.

The CPU 4 controls the computer as a whole. The CPU 4 also executes data processing based on the program stored in the system memory 3.

The display controller 5 controls the display of the display 7. The display 7 is, for example, a liquid crystal display, a plasma display, a CRT or the like.

The keyboard controller 6 detects a key operated by the keyboard 8 and notifies the CPU 4 of the content of the key operation.

The setup program 1a stored in the BIOS-ROM 1 has a resume function setting module 21 and a password setting module 22, as shown in FIG.

The resume function setting module 21 sets whether to enable the resume function. The resume function setting module 21 sets / resets the resume flag in the resume flag area 2b in the backup RAM 2 depending on whether or not the resume function is set.

The password setting module 22 comprises a flag setting module 22a, a conversion module 22b, a registration module 22c and the like. Flag setting module 2
2a sets whether or not to set a password, and sets / resets the password flag for the password area 2a in the backup RAM 2 depending on whether or not the password is set. The conversion module 22b converts the input password into a compressed bit string according to a predetermined rule. The registration module 22c registers the password converted into the compressed bit string in the password area 2a in the backup RAM 2 as a registration password.

On the other hand, the system boot program 1b stored in the BIOS-ROM 1 includes a password processing module 31, a system boot module 32, and a resume function module 33, as shown in FIG.

Here, the resume function means that when the main power supply is turned off during the startup period of the BIOS, the CPU 4
This is a function of saving the contents of each register therein and the system memory 3 in the backup RAM 2 and then returning the contents of the backup RAM 2 to the original position when the main power supply is turned on.

The password processing module 31 has a flag check module 31a, a conversion module 31b, and a comparison module 31c. The flag check module 31a checks the password flag held in the password area 2a in the backup RAM 2. The conversion module 31b converts the input password into a compressed bit string according to the same rules as the conversion module 22b in the password setting module 22 has. The comparison module 31c converts the compressed bit string of the converted password into the password area 2 in the backup RAM 2.
It is compared with the compressed bit string of the registered password registered in a, and the match / mismatch is determined.

The system activation module 32 sets the system to an accessible state when the comparison module 31c determines that the compressed bit strings of the passwords match.

The resume function module 33 has a flag check module 33a and a resume activation module 33b. The flag check module 33a checks the resume flag held in the resume flag area 2b in the backup RAM 2. When the comparison module 31c determines that the compressed bit strings of the passwords match when the resume function is enabled, the resume activation module 33b activates the resume function and outputs the data immediately before the main power is turned off. Restore the processing state.

Next, the operation of this computer will be described with reference to FIGS.

First, the operation at the time of setup will be described with reference to FIG. After turning on the main power supply, the user activates the keyboard 8 to activate the setup program 1a.
Press the predetermined key above. Then, the keyboard controller 6 detects this key operation and outputs a signal corresponding to this key operation to the CPU 4.

As a result, the CPU 4 activates the setup program 1a.

First, the CPU 4 follows the resume function setting module 21 in the setup program 1a.
On the display 7, a question menu is displayed with the contents of the user asking the user to decide whether to activate the resume function (step S1).

In response to this question, the user inputs an answer indicating whether or not to activate the resume function from the keyboard 7. This input content is checked in step S2.

If the input content indicates that the resume function is to be invalidated, the CPU 4 executes the backup RAM 2
A flag indicating invalidity of the resume function is set in the resume flag area 2b (step S3). After that, the process proceeds to the subsequent processes.

If the input content indicates that the resume function is valid, the CPU 4 determines that the backup RAM 2
A flag indicating the validity of the resume function is set in the resume flag area 2b (step S4).

After that, the CPU 4 displays a question menu on the display 7 according to the password setting module 22 and asks the user to decide whether or not to set the password (step S5).

In response to this question, the user outputs from the keyboard 7 an answer indicating whether or not to set a password. This input content is checked in step S6.

If the input content indicates that the password is not set, the CPU 4 sets a flag indicating that the password is not set in the password area 2a of the backup RAM 2 (step S7). After that, the process proceeds to the subsequent processes.

If the input content indicates that the password is set, the CPU 4 sets a flag indicating that the password is set in the password area 2a of the backup RAM 2 (step S8).

When setting the password is selected, the user inputs the password from the keyboard 8.
The CPU 4 displays the entered password on the display 7 and prompts the user to confirm the password. The user confirms that the password is correct from the displayed contents, and then presses the ENTER key. This determines the password (step S9).

When the password is determined, the CPU 4 converts the password into a compressed bit string as follows according to the conversion module 22b in the password setting module 22 (step S10).

That is, the CPU 4 regards the password as a series of binary number bit strings, divides this binary number bit string by, for example, a polynomial of X ¹⁶ + X ¹² + X ⁵ , and obtains the remainder of the result as a conversion result (compressed bit string). The length of the compressed bit string obtained by using this rule is a fixed length (16 bits) regardless of the length of the original password.

Thereafter, the compressed bit string of this password is stored in the password area 2a in the backup RAM 2 (step S11).

Next, with reference to FIG. 4, the operation when the user starts the computer for the purpose of performing normal data processing will be described.

When the main power source is turned on, first the CPU
4 checks the resume flag held in the resume flag area 2b in the backup RAM 2 according to the flag check module 33a in the system start-up program 1b, and determines whether or not the resume function is effective (step S21).

The operation when it is determined that the resume function is invalid will be described below.

When the check of the resume flag is completed, the password processing module 31 is activated. CP
The U4 executes the backup RA according to the flag check module 31a in the password processing module 31.
The password flag stored in the bus word area 2a in M2 is checked to determine whether or not the password is set (step S22).

If it is determined that the password is not set, the CPU 4 activates the system activation module 32 to set the system in the accessible state (step S23).

When it is determined that the password is set, the CPU 4 initializes various hardware necessary for password processing (step S24), and then displays a message prompting the user to enter the password. No. 7 is displayed (step S25).

In response to this message, the user inputs the password from the keyboard 7. When the password is input (step S26), the CPU 4 follows the conversion module 31b in the password processing module 31,
Convert the input password into a compressed bit string. This conversion is executed using the same rule as that of the conversion module 22b in the password setting module 22 described above (step S27). Thereafter, the CPU 4 reads the compressed bit string of the registered password stored in the password area 2a in the backup RAM 2 according to the comparison module 31c, and compares the compressed bit string of this registered password with the compressed bit string of the input password (step S28). .

As a result of this comparison, if the compressed bit strings of the passwords do not match, the CPU 4 regards the entered password as invalid and returns to the state of waiting for password input before step S26.

If the compressed bit strings of the passwords match, the CPU 4 activates the system activation module 32 to set the system in an accessible state (step S23). After that, normal data processing is performed.

Next, the operation in the case where it is judged in the flag check in step 21 that the resume function is effective will be described.

When the check of the resume flag is completed, the password processing module 31 is activated. CP
The U4 executes the backup RA according to the flag check module 31a in the password processing module 31.
The password flag stored in the bus word area 2a in M2 is checked to determine whether or not the password is set (step S29).

If it is determined that the password is not set, the CPU 4 activates the resume activation module 33b in the resume function module 33 to restore the state of data processing immediately before the main power supply was turned off ( Step S30). When it is determined that the password is set, the CPU 4 initializes various hardware necessary for the password processing (step S31), and then displays a message for prompting the password input on the display 7. Display (step S3
2).

When the user inputs a password in response to this message (step S33), the CPU 4
Converts the input password into a compressed bit string according to the conversion module 31b in the password processing module 31. This conversion is also executed using the same rule as the rule held by the conversion module 22b in the password setting module 22 (step S34).

Thereafter, the CPU 4 causes the comparison module 31
The compressed bit string of the registered password stored in the password area 2a in the backup RAM 2 is read according to c, and the compressed bit string of the registered password is compared with the compressed bit string of the input password (step S3).
5).

As a result of this comparison, if the compressed bit strings of the passwords do not match, the CPU 4 regards the entered password as invalid and returns to the state of waiting for password input before step S33.

If the compressed bit strings of the passwords match, the CPU 4 activates the resume activation module 33b in the resume function module 33 to restore the state of data processing immediately before the main power supply was turned off (step S30). .

Therefore, the computer of this embodiment has the following effects. Since the password is converted into a fixed-length compressed bit string for comparison, the password length limitation can be eliminated, and in addition, illegal analysis of the password can be prevented. Further, it is possible to improve security when the resume function is used.

As another method of converting the password into a compressed bit string, for example, there is a method of adding all the individual character codes forming the input password as the conversion result. For example, if the code string "AAAAA" is entered as a password, 41 ₍₁₆₎ +41 ₍₁₆₎
+41 ₍₁₆₎ +41 ₍₁₆₎ = 104 ₍₁₆₎ , and a bit string that represents this in a binary number is obtained as a compressed bit string of the password.

Next, another embodiment of the present invention will be described with reference to FIGS.
Will be explained.

The hardware configuration of the computer of this embodiment is the same as that shown in FIG.

As shown in FIG. 5, this computer is
Password area 102 in backup RAM 102
It is characterized in that two kinds of passwords are stored in a and these passwords are treated as equivalent at the time of password verification.

One of the two types of passwords (hereinafter referred to as a user password) is arbitrarily set by the user according to the password setting module 122 in the setup program 101a stored in the BIOS / ROM in the computer. Is set to. Another password (hereinafter referred to as a master key password) is set by a person other than the end user by using a specific application program AP that is not incorporated in the computer. The application program AP, which is recorded on a floppy disk, is mounted in a floppy disk device built in the computer and is started by being loaded in the system memory. In this embodiment, the application program for setting the master key password includes a routine for converting the password into a compressed bit string.

Since the structure of the setup program 101a is the same as that of FIG. 2, its explanation is omitted. The structure of the system startup program 101b is the same as that of FIG. 2 except the contents of the comparison module 131c in the password processing module 131.

Comparison module 1 of this computer
31c is a backup RAM for the entered password
Both the user password and the master key password stored in the password area 102a in 102 are compared, and when either the user password or the master key password matches the input password, it is determined that the passwords match.

Next, the operation of this computer will be described.
In the explanation of this operation, the explanation of converting the password into a compressed bit string is omitted.

The master key password is set and managed by using a specific application program AP, for example, at the manufacturer, the distributor, or another place, before the computer is handed to the end user.

After setting the master key password, the computer is handed to the end user. The operation in which the end user sets the user password after obtaining the computer is the same as in the previous embodiment.

Next, the operation when the computer is started up will be described with reference to FIG.

When the main power supply is turned on, the flag check module 1 in the system boot program 101b
33a is activated. As a result, the CPU checks the resume flag held in the resume flag area 102b in the backup RAM 102 and determines whether or not the resume function is currently effective (step S4).
1).

When the check of the resume flag is completed, the password processing module 131 is activated. C
The PU checks the password flag stored in the bus word area 102a in the backup RAM 102 according to the flag check module 131a in the password processing module 131, and determines whether or not the password is set (steps S42 and S49).

If the resume function is not set and it is determined that the password is not set, the CPU boots the system in an accessible state according to the system boot module 132 (step S43). After that, normal data processing is performed.

When the resume function is set and it is determined that the password is not set, the CPU activates the resume activation module 133b in the resume function module 133, and the main power supply is turned off. The state of the immediately preceding data processing is restored (step S50). After that, normal data processing is performed.

When the CPU determines in step S42 (or step S49) that the password has been set, it initializes various hardware necessary for password processing (steps S44 and S51), and thereafter, the password is set. A message for prompting the input of is displayed on the display (steps S45, S52).

In response to this message, the user inputs the password from the keyboard. When the password is input (steps S46 and S53), the CPU reads the user password and the master key password stored in the password area 102a in the backup RAM 102 according to the comparison module 131c, and first compares the user password and the input password. (Steps S47 and S54).

As a result of this comparison, if the passwords match each other, the process proceeds to step S43 (step S50) to perform the system starting process or the resume process.

If the passwords do not match,
The CPU compares the master key password with the input password (steps S48 and S55).

As a result of the comparison, if the passwords match each other, the process proceeds to step S43 (step S50) to perform the system starting process or the resume process.

Further, when the passwords do not match, the CPU regards the entered password as invalid and
The process returns to the state before step S46 (step S53).

Therefore, according to the computer of this embodiment, even if the end user forgets the user password registered by himself / herself, he / she contacts the person who sets the master key password (administrator), and You can boot the system by asking for the master key password.

In addition, this computer can activate the system by a similar routine in the case that the computer must be used urgently when the user is absent.

When a large amount of this computer is purchased, a representative from the purchaser may set and manage the master key password of each computer immediately after the purchase.

As another embodiment of the present invention,
For example, there is a method in which the user registers two or more types of passwords (user passwords) in the backup RAM, and when one of the passwords matches the input password at the time of collating the passwords, the passwords are determined to match.

In order to prevent unauthorized use of the computer, there is a method of adding a function of forcibly suspending the operation of the entire apparatus for a certain period of time when the password verification fails a predetermined number of times in a row.

[0088]

As described above, according to the computer password processing apparatus and the password processing method of the present invention, it is possible to reduce the restriction on the length of the password and prevent the unauthorized analysis of the password. Also,
According to the present invention, even if a user forgets his / her registered password, he / she can easily recover the password.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a computer according to an embodiment of the present invention.

2 is a diagram showing structures of a setup program and a system boot program stored in a BIOS / ROM in the computer of FIG.

FIG. 3 is a flowchart showing a flow of operations at the time of setting up the computer of FIG.

FIG. 4 is a flowchart showing a flow of operations when the computer of FIG. 1 is activated.

FIG. 5 is a block diagram illustrating a configuration of a computer according to another embodiment of the present invention.

FIG. 6 is a flowchart showing a flow of operations when the computer of FIG. 5 is activated.

[Explanation of symbols]

1 ... BIOS / ROM, 2 ... Backup RAM, 3 ...
System memory, 4 ... CPU, 5 ... Display controller, 6 ... Keyboard controller, 7 ... Display, 8 ... Keyboard, 9 ... System bus, 1a ... Setup program, 1b ... System startup program, 2
a ... Password area, 2b ... Resume flag area, 21 ... Resume function setting module, 22 ... Password setting module, 22a ... Flag setting module, 22b ... Conversion module, 22c ... Registration module, 31 ... Password processing module, 32 ... System startup Module, 33 ... Resume function module, 3
1a ... Flag check module, 31b ... Conversion module, 31c ... Comparison module, 33a ... Flag check module, 33b ... Resume activation module, 1
01 ... Backup RAM, 102a ... Password area, 101a ... Setup program, 122 ... Password setting module, AP ... Application program, 101b ... System startup program, 131 ... Password processing module, 131c ... Comparison module.

Claims (15)

[Claims] 1. A computer password processing device, wherein input means for inputting a password to be registered and a password to be compared with this registration password, and the registered password input by the input means are converted into a compressed bit string according to a predetermined rule. First converting means for converting; storage means for storing a compressed bit string of the registered password converted by the first converting means; and the comparison password input by the input means,
Second conversion means for converting into a compressed bit string according to the same rule as the rule of the first conversion means, and a compressed bit string of the comparison password converted by the second conversion means and stored in the storage means. It is characterized by further comprising: comparing means for comparing the compressed bit string of the registered password, and means for setting the computer in an accessible state when the compressed bit strings match as a result of the comparison by the comparing means. Computer password processing device. 2. The computer password processing apparatus according to claim 1, wherein the first conversion unit and the second conversion unit are respectively
A password processing device for a computer, which converts an input password into a compressed bit string having a fixed length. 3. The computer password processing device according to claim 1, wherein the first conversion unit and the second conversion unit are respectively
A password processing device for a computer, characterized in that a series of binary bit strings corresponding to an input password is divided by using a certain polynomial, and the remainder is obtained as a conversion result. 4. The password processing device for a computer according to claim 1, wherein the first conversion means and the second conversion means are respectively
A password processing device for a computer, wherein a result obtained by adding codes of respective characters of an inputted password is obtained as a conversion result. 5. A password processing device for a computer, wherein input means for inputting a password to be registered and a password to be compared with the registered password, storage means for storing the registered password, and input by the input means. Means for storing the registered password as a first registered password in the storage means according to an external application program, and the registered password input from the input means as a second registered password according to a program inside the computer. A means for storing the storage means in the storage means, and a first registration password and a second storage password stored in the storage means for storing the comparison password input by the input means.
Comparing means for comparing both the registered passwords of the first and second comparison passwords, and as a result of the comparison by the comparing means, the comparison password is the first password.
And a second registration password, the means for setting the computer in an accessible state, the password processing apparatus for the computer. 6. A password processing method for a computer, the step of inputting a password to be registered, the step of converting the input registration password into a compressed bit string according to a predetermined rule, and the compressed bit string of the converted registration password. Storing a password to be compared with the registered password, converting the inputted comparison password into a compressed bit string according to the rule, compressing the compressed bit string of the comparative password and compressing the registered password. A password processing method for a computer, comprising: a step of comparing the bit string with each other; and a step of setting the computer in an accessible state when the compressed bit strings of the passwords match as a result of the comparison. 7. The computer password processing method according to claim 6, wherein a resume function is turned on / on, which holds a data processing state immediately before turning off the main power source and restores this state when the main power source is turned on. A step of switching off setting, a step of judging an on / off setting state of the resume function, a step of judging that the resume function is set to on, and a compressed bit string of the comparison password and a compressed bit string of the registered password. As a result of comparison with, when the compressed bit strings match, the resume function is activated,
And a step of restoring the state of data processing immediately before turning off the main power source. 8. A computer password processing method, the steps of inputting a plurality of passwords to be registered, storing each of the plurality of input registration passwords, and inputting a password to be compared with the registration password. A step of comparing the inputted comparison password with the stored plurality of registered passwords, respectively, and accessing the computer if the comparison password matches one of the plurality of registered passwords as a result of the comparison. A method of processing a password for a computer, comprising the step of setting a possible state. 9. The computer password processing method according to claim 8, wherein a resume function is turned on / off for holding a data processing state immediately before turning off the main power source and restoring this state when the main power source is turned on. A step of switching off setting; a step of judging an on / off setting state of the resume function; a step of judging that the resume function is set to on; and comparing the comparison password with the plurality of registered passwords. As a result, when the comparison password matches any of the plurality of registered passwords, the process further includes the step of activating the resume function to restore the state of data processing immediately before turning off the main power supply. How to handle computer passwords. 10. A computer password processing method, comprising the step of inputting a password to be registered using an external application program, and storing the password input using the application program as a first registration password. A step of inputting a password to be registered using a program inside the computer, a step of storing the password input using the program inside the computer as a second registration password, and comparing with the registration password A step of inputting a password to be input, a step of comparing the input comparison password with both the first registration password and the second registration password, and as a result of comparison, the comparison password is the first comparison password. The registration password or the second registration password If a match with either the word, password processing method of a computer, characterized in that a step of setting the computer accessible. 11. The computer password processing method according to claim 10, wherein a resume function is turned on / on, which holds a data processing state immediately before turning off the main power source and restores this state when the main power source is turned on. A step of switching off setting, a step of judging an on / off setting state of the resume function, a step of judging that the resume function is set to on, and a result of comparison between the comparison password and each registered password. If the comparison password matches either the first registration password or the second registration password, the resume function is activated to restore the state of data processing immediately before turning off the main power supply. A password processing method for a computer, further comprising: 12. A computer password processing method, comprising the steps of inputting a plurality of passwords to be registered, converting the input plurality of registered passwords into compressed bit strings according to predetermined rules, respectively. Storing a compressed bit string of a plurality of registration passwords, inputting a password to be compared with the registered password, converting the input comparison password into a compressed bit string according to the rule, Comparing a compressed bit string with each of the stored compressed bit strings of the registered passwords, and as a result of the comparison, if the compressed bit string of the comparison password matches any one of the compressed bit strings of the registered passwords, Make your computer accessible Password processing method of a computer, characterized by a step of constant. 13. The computer password processing method according to claim 12, wherein a resume function is turned on / on which holds a state of data processing immediately before turning off the main power source and restores this state when the main power source is turned on. A step of switching off setting, a step of judging an on / off setting state of the resume function, a step of judging that the resume function is set to on, and a compressed bit string of the comparison password and the plurality of registered passwords. As a result of comparison with the compressed bit string, if the compressed bit string of the comparison password matches any one of the compressed bit strings of the plurality of registered passwords, the resume function is activated and the state of data processing immediately before turning off the main power supply. Of the computer, further comprising: Password processing method. 14. A method of processing a password in a computer, wherein a step of registering a first registered password composed of the compressed bit string using an external application program including a routine for converting the password into a compressed bit string according to a predetermined rule, Storing a password entered by using a program including the routine incorporated in the computer in the form of the compressed bit string as a second registration password; and inputting a password to be compared with the registration password. A step of converting the inputted comparison password into a compressed bit string according to the rule; a compressed bit string of the comparison password, a stored compressed bit string of the first registered password and a stored compressed bit string of the second registered password; Ratio of both And, as a result of the comparison, if the compressed bit string of the comparison password matches the compressed bit string of either the first registration password or the second registration password, switching the computer to an accessible state. A password processing method for a computer, comprising: 15. The computer password processing method according to claim 14, wherein a resume function for turning on / off the data processing state immediately before the main power source is turned off is held and the state is restored when the main power source is turned on. Switching off setting, determining the on / off setting state of the resume function, determining that the resume function is on, and compressing the compressed bit string of the comparison password and each registered password As a result of comparison with the bit string, if the compressed bit string of the comparison password matches any of the compressed bit strings of the registered passwords, the resume function is activated to restore the state of data processing immediately before turning off the main power supply. And a password for the computer. Processing method.