WO2003096198A1 - Information access device, information access method, and recording medium on which program allowing computer to execute information access method - Google Patents

Abstract

An information access server (200) comprises a file acquisition unit (224) that acquires a file requested by a user; an HTML file group storage unit (214) in which acquired information is stored; an address generation unit (228) that generates an address, at which acquired information is to be stored, when it is determined by an address determination unit (222) that a file is to be acquired; and a link detection/change/recursion execution unit (230) that extracts link information from the acquired information and relates the extracted link information to the generated address for conversion.

Description

 TECHNICAL FIELD The present invention relates to an information access device, an information access method, and a recording medium on which a program for causing a computer to implement the information access method is recorded.

 The present invention relates to a technology for storing information on the World Wide Web (WWW), and more particularly, to a technology for storing information requested by a user. Background art

 With the development of networks such as the Internet and the intranet, there are many technologies for managing information provided in the Web environment. Japanese Patent Application Laid-Open No. 2001-356983 discloses one such management technique.

 The information disclosure restriction system disclosed in this publication includes a URL (Uniform Resource Locators) generation circuit that generates a fixed-length character string from a given input value, and a URL that changes the URL of information to be disclosed at regular intervals. An information disclosure restriction server device including a change circuit, a web server circuit, a URL generation change circuit that simulates a URL change process of the server device, and a dedicated client device including a web browser function. According to the system described in this publication, the information disclosure restriction server device constantly changes the URL of the disclosure restriction information distributed from the information disclosure restriction server device at regular time intervals. Only the user having the dedicated client device can correctly generate the URL of the release restriction information of the information release restriction server device whose URL is constantly changed by the operation of the URL generation change circuit and can access it stably. As a result, a general client device to which access is not permitted does not have a URL generation change circuit, and therefore cannot obtain a URL for accessing a file whose disclosure is restricted. As a result, there is no need to build a database for storing authentication server devices and user information. Therefore, an information disclosure site for limited users that does not require management and operation costs can be realized extremely easily.

However, in the system described in the above publication, complicated Even if the processing can be avoided, access must be made using a dedicated client device that has a URL generation change circuit.

 Therefore, an object of the present invention is to provide an information access device, an information access method, and a recording medium recording a program for implementing the method on a computer, which restricts access to information on the Web by a simple method. It is.

 Another object of the present invention is to provide an information access device, an information access method, and a recording medium storing a program for realizing the method by a computer, which can provide information to a user in response to a user's request by a simple method. It is to provide. Still another object of the present invention is to restrict access to information on the Web, and conversely, to provide information to a user at the request of the user. An object of the present invention is to provide a device, an information access method, and a recording medium recording a program for realizing the method by a computer. Disclosure of the invention

 An information access device according to an aspect of the present invention includes: an acquisition unit for acquiring information requested by a user; a storage unit for storing information acquired by the acquisition unit; Generating means for generating an address for storing the acquired information; and control means for controlling the storage means to store the information at the address generated by the generating means.

According to the information access device having this configuration, when a user requests acquisition of information on the Web, the acquisition unit acquires the information. When the URL of the information is a predetermined URL or the information satisfies a predetermined condition such as having a specific file / record identifier, an address for storing the obtained information is generated. This address may be different from the URL described above, or may be an address created using random numbers. The control means stores the obtained information at the created address. As a result, the information is stored at an address different from that of the original URL, and the possibility of the original URL being known is reduced.Therefore, direct access to the original URL can be restricted, and generated by the generation unit. Information can be provided at the request of the user who knows the address. As a result, restricting access to information on the web In addition, it is possible to provide an information access device that can provide information to a user in response to a user request.

 Preferably, the information access device further includes random number generating means for generating a random number. The generating means includes means for generating an address by using the random number generated by the random number generating means.

 According to the information access device having this configuration, since an address using a random number is generated, it is not possible to easily know the generated address, so that access to this address can be restricted and the original URL can be known. Because it is less likely, you can also restrict direct access to the original URL.

 More preferably, the information access device further includes detection means for detecting the date and time. The generation means includes means for generating an address using the date and time detected by the detection means.

 According to the information access device having this configuration, since the address using the date and time is generated, the generated address cannot be easily known (for example, it is easy to generate the address by expressing the date and time information in hexadecimal notation). You can restrict access to this address, and it is less likely that the original URL will be known, so you can also restrict direct access to the original URL.

 More preferably, the generation means of the information access device includes a means for generating an address for storing the acquired information when the storage location of the information is satisfied with a preset storage location.

 According to the information access device having this configuration, if the storage location of the information is a predetermined URL, the file specified by the URL can be stored in the address generated by the generation unit.

 More preferably, the information obtained by the obtaining means of the information access device includes link information to other information. The information access device includes: an extracting unit for extracting link information from the information acquired by the acquiring unit; and an information converting device for converting the link information extracted by the extracting unit in association with the address generated by the generating unit. Conversion means.

According to the information access device having this configuration, the acquired information includes the link information. 03 03549 and link information is extracted. The extracted link information is converted according to the generated address. For example, when information in which a certain URL is specified as link information is obtained, an address in which the information specified by the URL is stored is generated based on predetermined conditions, and the generated address is stored in the address. Link information is converted in association. As a result, even when the information requested by the user to include the link information includes the link information, while maintaining the link relationship, restricting access to information on the Web, and responding to the request of the user. An information access device capable of providing information to a user can be provided.

 More preferably, the information access device further includes a set time detecting means for detecting that a preset time has come. The generating means includes means for generating an address for storing the acquired information when the preset time is detected by the set time detecting means.

 According to the information access device having this configuration, at a preset time, an address for storing the acquired information is generated, and the information is stored in the generated address. For example, if the predetermined time is set to 5 minutes, an address is generated every 5 minutes, and the address where the information is stored is changed one after another. Since the address is generated over time, it is not easy to know the generated address, so it is possible to restrict access to this address and reduce the possibility that the original URL will be known, so directly access the original URL Can also be restricted.

 An information access method according to another aspect of the present invention includes: an acquiring step for acquiring information requested by a user; a storing step for storing information acquired in the acquiring step; and a condition set in advance. The method includes a generation step of generating an address for storing the acquired information, and a control step of controlling the storage step to store the information at the address generated in the generation step.

According to the information access method having this configuration, when a user requests acquisition of information on the Web, the information is acquired in an acquisition step. If the URL of the information is a predetermined URL or the information satisfies a predetermined condition such as having a specific file / file identifier, an address for storing the obtained information is generated. . This address may be different from the URL mentioned above, or a random number Orchid 49 It is an address created using. In the control step, the acquired information is stored in the created address. As a result, the information is stored at an address different from the original URL, and the possibility that the original URL is known becomes low.

Direct access to L can be restricted, and information can be provided in response to a user's request to know the address generated in the generation step. As a result, it is possible to provide an information access method capable of providing information to a user in response to a user's request while restricting access to information on the Web.

 Preferably, in the information access method, the information acquired in the acquiring step includes link information to other information. The information access method includes an extraction step of extracting link information from the information obtained in the obtaining step, and a conversion for converting the link information extracted in the extraction step in association with the address generated in the generation step. And a step.

 According to the information access method having this configuration, if link information is included in the acquired information, the link information is extracted. The extracted link information is converted according to the generated address. For example, when information in which a URL is specified as link information is obtained, an address where the information specified by the URL is stored is generated based on predetermined conditions, and the generated address is generated. The link information is converted in association with. As a result, even when the information requested by the user to include the link information includes the link information, the access to the information on the web is restricted while maintaining the link relationship, and the information is requested according to the user's request. An information access method capable of providing information to a user can be provided.

 A recording medium according to yet another aspect of the present invention is a recording medium recording a program for realizing the information access method of the present invention using a computer.

 According to the recording medium having this configuration, the recording medium records a program for realizing an information access method that enables a computer to provide information to a user in response to a user request while restricting access to information on the Web. A medium can be provided. BRIEF DESCRIPTION OF THE FIGURES

m1 is an overall configuration diagram of the information access system according to the first embodiment of the present invention. You.

 FIG. 2 is a diagram of a computer that realizes the information access system.

 FIG. 3 is a control block diagram of the computer system shown in FIG.

 FIG. 4 is a diagram showing information stored in the confirmed file name storage unit.

 FIG. 5 is a diagram showing the contents of the setting file.

 FIG. 6 is a flowchart showing a control structure of a main process executed by the information access server according to the first embodiment of the present invention.

 FIG. 7 is a flowchart showing a control structure of the file processing shown in FIG. FIG. 8 is a diagram showing a link relationship before the finalization process.

 FIG. 9 is a diagram showing the contents of the HTML file before file processing.

 FIG. 10 is a diagram showing the contents of the HTML file after the file processing.

 FIG. 11 is a diagram illustrating a link relationship after the file processing.

 FIG. 12 is an overall configuration diagram of the information access system according to the second embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same components are denoted by the same reference numerals. Their names and functions are the same. Therefore, repetition of detailed description thereof will be appropriately omitted.

 First Embodiment>

An information access system according to the present embodiment will be described. As shown in FIG. 1, this information access system connects a client computer 100 having a WWW browser function, an information access server 200, a client computer 100 and the information access server 2000. and a network 1 ² 0 for. The information access server 200 has a WWW server unit 210 and an information access conversion unit.

220, a setting file storage unit 250, and a timer 260. The WWW server unit 210 stores an HTML (HyperText Markup Language) file group storage unit 212 for storing files before file processing described later and an HTML file group storage unit 214 for storing files after file processing. And Information access conversion The unit 222 includes an address determination unit 222, a file acquisition unit 222, a random number generation unit 222, an address generation unit 222, a link detection 'change' recursion execution unit 230, and a , A file storage section 232, and a confirmed file name storage section 234.

 The client computer 100 has a WWW browser function, in which a user inputs an instruction for information requested to be browsed, and sends the information to an information access server 200 via a network 120 such as the Internet. Request file The client computer 100 displays the file sent from the information access server 200.

 The information access server 200 is accessed by a WWW browser of the client computer 100 via a network 120 such as the Internet. The HTML file group storage unit 214 stores information generated by the information access conversion unit 220 based on the information stored in the HTML file group storage unit 212. The HTML file group storage unit 212 stores, in addition to HTML files, files such as images and sounds, dynamic files output by CGI scripts, Java (R) servlets, etc. .

 The WWW server unit 210 stores the HTML file group storage unit 212 and the HTML file group storage unit 214 based on the file request received from the client computer 100 via the network 120. Send the file. The information access converter 220 is started by the timer 260. The information access conversion unit 220 sends a file request to the WWW server unit 210, and stores the file output from the WWW server unit 210 in the HTML file group storage unit of the WWW server unit 210. Store in 2 1 4 At the time of this storage, the file is stored at a position corresponding to the address generated by the address generation unit 228.

The address determination unit 222 of the information access conversion unit 220 obtains a file corresponding to the address based on the conditions specified in the configuration file stored in the configuration file storage unit 230. It is determined by the part 2 2 4 whether or not to acquire. The file obtaining unit 222 obtains a file corresponding to the address determined to be obtained by the address determining unit 222 from the WWW server unit 210, and links the content of the obtained file to a link. Detection 'change' Sent to recursive execution unit 230. Random number generation The generation unit 232 generates a random number, and the generated random number is transmitted to the address generation unit 228.

 The address generation unit 228 acquires the random number generated by the random number effort unit 226 and the setting file stored in the setting file storage unit 250 by the file acquisition unit 224 based on the random number. Create a storage location for the file. The link detection 'change' recursive execution unit 2 3 4 detects the hyperlink if the file acquired by the file acquisition unit 2 24 is a file that has a hyperlink to another file such as an HTML file. . Also, when the address determination unit 230 determines that the file is to be stored based on the configuration file stored in the configuration file storage unit 250 by sealing it to the address of each hyperlink destination. The link destination of the hyperlink is changed to the character string generated by the address generation unit 228, and the acquisition and storage of the file existing at the link destination of the hyperlink are executed recursively.

 The file storage unit 232 stores the file whose hyperlink has been changed by the recursive execution unit 234 at the location corresponding to the address generated by the address generation unit 228. I do. Also, information indicating the correspondence between the address of the file acquired by the file acquisition unit 222 and the address generated by the address generation unit 228 is stored in the confirmed file name storage unit 236. Is done. The confirmed file name storage unit 236 stores a list of files acquired by the file processing routine, and prevents the same file from being acquired more than once. The timer 260 starts the information access converter 220 at a certain timing. In the present embodiment, the timing for activating the information access conversion unit 220 is assumed to be defined inside the timer 260, but is not limited to this. The start timing may be described in a setting file described later, and may be provided outside the timer 260.

 The setting file stored in the setting file storage unit 250 is stored in the information access conversion unit.

Read by 220. The configuration file contains the criteria for determining whether or not to obtain a file in the address determination unit 222, the generation rules for generating addresses from the random numbers generated by the random number generation unit 226, the WWW server unit 2 1 2 location (URL, address), HTML file group storage section 2 14 location (UR L, address) is stored.

 In the present embodiment, the setting file is described as a file existing outside the information access conversion unit 220, but is not limited to this. It can also be set inside the information access converter 220. Alternatively, setting information such as a setting file may be stored both inside and outside the system, and either of them may be used at the time of execution.

 FIG. 2 shows an external view of a computer system which is an example of the information access server 200. Referring to FIG. 2, this computer system 3.00 includes a computer 302 having a FD (Flexible Disk) drive 306 and a CD-ROM (Compact Disc-Read Only Memory) drive 308, a monitor 304, and a keyboard 31. Includes 0 and mouse 3 12.

 FIG. 3 shows the configuration of the computer system 300 in a block diagram format. As shown in FIG. 3, the computer 302 includes a CPU (Central Processing Unit) 320, a memory 322, and a fixed disk connected to each other by a bus, in addition to the FD drive 306 and the CD-ROM drive 308 described above. 324 and a communication interface 326. An FD 316 is mounted on the FD drive device 306. A CD-ROM 318 is mounted on the CD-ROM drive 308.

 As described above, the information access server 200 is realized by computer hardware and software executed by the CPU 320. Generally, such software is stored and distributed on recording media such as FD316 and CD-ROM 318, and is read from the recording medium by the FD drive 306 or CD-ROM drive 308 and temporarily stored on the fixed disk 324. . Further, the data is read from the fixed disk 324 to the memory 322 and executed by the CPU 320. The computer hardware itself shown in Figs. 2 and 3 is common. Therefore, the most essential part of the present invention is software recorded on a recording medium such as the FD 316, the CD-ROM 318, and the fixed disk 324. Since the operation of the computer itself shown in FIGS. 2 and 3 is well known, detailed description thereof will not be repeated here.

FIG. ⁴ shows information stored in the confirmed file name storage unit 234. Shown in Figure ⁴ As described in JP03 / 03549, the confirmed file name storage section 234 stores a file name before conversion and a file name after conversion corresponding to the file name before conversion. For example, it is stored that the file name “image.htmlj” before conversion corresponds to the file name “38xjlk4Q0 / image.htmlj.” The “38xjlk4Q0” part is the random number generator 2 2 6 Corresponds to the random number generated by.

 FIG. 5 shows an example of the setting file 400 stored in the setting file storage unit 250. The configuration file 400 stores, in the WWW server section 210, a storage area 410 for storing the URL of a file to be obtained first and a storage location of a file obtained from the WWW server section 210. It includes a storage area 420 for storing, and a storage area 430 for storing an address generation rule to be a storage destination when a file is obtained in the address determination unit 222 when a file is obtained. In this example, based on the information stored in the storage area 410 and the storage area 420, the first URL that the information access conversion unit 220 obtains is “http: \ wwserver / top.html”. It means that each of the obtained files is stored under "/ usr / local / apache / htdocs /". Also, based on the information stored in the storage area 430, the file acquisition criteria and the rules for generating the storage destination address for the acquired file can be found. As shown in FIG. 5, the first line of the storage area 410 is set so that it is determined that a file is acquired for a URL including the character string “top.html”. For that file, the generated address is set to "index.html". The second line uses a regular expression to retrieve files for URLs that contain a string that starts with rimagej and ends with r.html, such as “image23.html” or “image_est.html”. Is set.

In the address generation rules, "RAND0MJ indicates a random character string generated by the address generation unit 228 based on the random number generated by the random number generation unit 226. , "38xjIk4Q0", or any combination of numbers or letters / favets. In addition, the part indicated by “$ 1” contains the character string in parentheses in the regular expression that indicates the acquisition criterion, and becomes “image23.html” or “image—test.html”. Multiple parentheses can be used. In this case, the character string in each parenthesis corresponds to “$ 1” and “$ 2” in order. The address of the storage destination using such a generation rule is such that the original file name (“image23.html” or “image__test.html”) is added after the random character string generated by the address generation unit 228. The following string. For URLs that do not meet the file acquisition criteria in the storage area 430, file acquisition and storage destination address generation are not performed. In this setting file 400, "a line starting with #j is a comment line.

 Referring to FIG. 6, a program executed by CPU 320 of information access server 200 according to the present embodiment has the following control structure.

 At step (hereinafter, step is abbreviated as S.) At 100, CPU 320 reads setting file 400 from setting file storage section 250. At S200, CPU 320 sets the URL of the file to be obtained first. At this time, the URL of the file to be obtained first is set based on the contents stored in the storage area 410 of the setting file 400.

 In S300, CPU 320 executes file processing (file acquisition, analysis, and storage processing). Details of this file processing will be described with reference to FIG. Referring to FIG. 7, in S302, CPU 320 determines whether or not the link destination is a URL that is a processing target URL. This determination is made based on the information stored in the storage area 430 of the setting file 400 stored in the setting file storage section 250. If the link destination is a URL to be processed (YES in S302), the process proceeds to S304. If not (NO in S302), this process ends.

 In S304, the CPU 320 acquires the file. In S306, CPU 320 determines whether or not the file has been acquired. If the file can be obtained (YES in S306), the process proceeds to S308. If not (NO in S306), this process ends.

In S308, CPU 320 creates a storage destination address. At this time, the storage destination address is set based on the contents stored in the storage area 430 of the setting file 400. At S 310, CPU 3 ² 0 is the file to store the storage address. At this time, the file is stored in a predetermined area of the fixed disk 324. In S 312, CPU 320 stores the correspondence between the URL and the storage destination address in confirmed file name storage section 234. In S314, CPU 320 determines whether or not the file is a file to be analyzed as the HTML format. If the file is to be analyzed as an HTML format (YES in S 314), the process proceeds to S 316. If not (NO in S314), this process ends. In S 316, CPU 320 analyzes the HTML description language and extracts N link destinations.

 At S318, CPU 320 initializes variable I (1 = 1). In S320, the CPU 320 determines whether the I-th link destination is a URL that has already been processed. This determination is made based on the contents stored in the confirmed file name storage unit 234. If the I-th link destination is a URL that has already been processed (YES in S320), the process proceeds to S326. If not (NO in S 320), the process proceeds to S 322.

 In S322, CPU 320 executes file processing (file acquisition, analysis, and storage processing) for the I-th link destination. In S324, the CPU 320 sets the link destination to the storage destination address of the file acquired in S322.

 At S 326, CPU 320 adds 1 to variable I. In S328, CPPU320 determines whether variable I is greater than the number N of extracted links. If the variable I is larger than the extracted number of links N (YES in S328), this process ends. If not (NO in S328), the process returns to S320.

 The operation of the information access system according to the present embodiment based on the above structure and flowchart will be described. In the following description of the operation, the operation of each function block shown in FIG. 1 will be described, not the operation of the CPU 320 described in the flowchart. As described above, since the information access server 200 is realized by the CPU 320 and software, the operation of the CPU 320 and the operation of each function block can be considered to be synonymous.

FIG. 8 shows a configuration of a Web page stored in the HTML file group storage unit 212 of the WWW server unit 210. HTML file which is the top page 500 Hiring 49

A link is set from (top.htral) to the HTML file 510 (image.html) that displays the image and the HTML file 530 (desc.html) that displays the description. From the HTML file 510 for displaying an image, a link is set to the file 520 (image, jpg) and the HTML file 500. In the WWW server section 210, the location of the file inside the information access server 200 corresponding to “http: \ wwwserver / top.html” which is a URL for external reference is “/ usr /local/apache/lrtdocs/top.html ".

 A case where the information access conversion unit 220 is activated using the setting file 400 shown in FIG. 5 for the web page configuration in FIG. 8 will be described. The first URL "http: \ server / top.html" stored in the storage area 410 in the setting file 400 is read (S100, S200), and the file corresponding to this URL is read. The file processing is executed for (S300).

 The address determination unit 222 determines whether the file is to be acquired (S302). Since it is determined that “top.html” should be obtained from the first line of the storage area 430 of the configuration file 400, the file (top.htral) is obtained (S304), and the storage destination address is set. It is generated (S308).

 According to the first line of the storage area 430, "The file named top.html J is indicated to generate an address of rindex.html J, so the file is stored in the storage area 420 of the configuration file 400. According to the specified save destination, the file is saved in “/usr/local/apache/htdocs/index.html” corresponding to that location (S310). The correspondence between the URL of the obtained file (htt: //wwwserver/top.html) and the generated address (index, html) is stored in the confirmed file name storage unit 234. (S312).

It is determined whether or not this file is a file having a hyperlink (S314). Since this file is an HTML file, it is determined that analysis is necessary (YE S in S314). . This file is parsed (S316), and assuming that this HTML file is as shown in FIG. 9, by analyzing the structure of the tags in this HTML file, the HTML file 510 (image, html) PC Ranko 49

A link to the HTML file 530 (desc.html) is extracted (S316, N = 2).

 Whether the HTML file 510 (image, html), which is the first link destination, is the already confirmed URL is determined based on the information stored in the confirmed file storage unit 234 (S320). If this file has not been acquired yet (NO in S320), file processing is performed on "image.html" (S322). As in the case of “top.html”, it is determined whether or not this file is a force file to be acquired (S 302). After obtaining the file (S304), the storage destination address is generated (S308).

 According to the generation rule of the storage destination address generated for rimage.htmlj, according to the second line of the storage area 430, since “$ RAND0M / $ 1J”, “$ RAND0M” is used by the random number generation unit 226. This is a random character string generated based on the generated random numbers. Here, it is assumed that the random character string is “38xjIk4Q0J. In addition,“ $ 1J represents a character string that conforms to the regular expression in the file acquisition judgment criteria. In this example, it is “image, html”. Therefore, the generated address is "38xjlk4Q0 / image.html J.

 Therefore, the pair of the URL (http: \ server / image, html) acquired in S312 and the generated address (38xjlk4Q0 / image.html) is stored in the confirmed file name storage unit 234. . It is determined that “image.html” also needs to be analyzed in the HTML file (YES in S 314), and the linked HTML file 500 (top.html) and file 520 (image, jpg) are used as the link destination. It is extracted and processed in the same way.

The HTML file 500 (top.html), which is one of the links from the HTML file 510, is the URL already confirmed from the confirmed file name storage unit 234 (YES in S320). Analysis' storage processing is not performed. The link destination is changed from the HTML file 500 (top.html) to the HTML file 600 (index.htral) according to the correspondence between the URL and the generated address in the confirmed file name storage unit 234 (S324). 303549

File 520 (image, jpg), which is another link from HTML file 510, is a file that has not been obtained yet, so the file for “image.jpg” is obtained, analyzed, and stored. . Since the file 520 (image, jpg) is a file to be stored based on the acquisition criterion in the third line of the storage area 430 (YES in S302), the file is acquired (S304), and the address is generated (S304). S 308). The address generated at this time contains a random character string as in the case of “image.htmlj.” In this example, it is assumed that “d8GA0aCJX” is generated.

 Therefore, the pair of the acquired URL (http: \ server / image, jpg) and the generated address (d8GA0aCJX / image.jpg) is stored in the confirmed file name storage unit 234. Since this file is not an HTML file (NO in S314), it is determined that analysis is unnecessary, the file is stored, and the file processing routine ends. After the file processing routine call for the file 520 is completed, the link destination from the HTM ML file 510 to the file 520 is changed to "d8GA0acJX / image.jpgj" as described above. Therefore, the link destination is changed to this generated address (S324).

 This completes the processing for all the links from the HTML file 510, so the file is stored in the storage address (38xjlk4Q0 / image.httnl), and the routine ends. The link destination from the top page HTML file 500 to the HTML file 510 is changed to “38xjlk4Q0 / image.html” because the generated address has been changed by the processing so far. Change to the address (S324).

There is another HTML file 530 (desc.html) that is the link destination from file 500, but it is not included in the URL already confirmed, so the file processing routine is called. Since this file does not match any of the storage areas 430 in the setting file 400, it is determined that this file is not a file to be acquired and stored. Therefore, the file processing routine for this file ends. That is, change the link destination for this file (desc.html) You don't have to.

 Finally, the file is stored in the location indicated by the generated address, and the processing routine ends. The HTML description shown in FIG. 9 is changed as shown in FIG. Further, the link relationship shown in FIG. 8 is as shown in FIG. Regarding the HTML file 600 (index.html) stored at this time, the link from the HTML file 00 to the HTML file 630 is not changed, but the link to the HTML file 610 is file processing. Rewritten by routine.

 After executing the processing by the information access conversion unit 220 in this way, the configuration of the HTML file group storage unit 214 of the WWW server unit 210 is as shown in FIG. The link structure of the three files in the HTML file group storage unit 214 stored by the information access conversion unit 220 is different from the link structure in the HTML file group storage unit 212 from which the file was obtained. However, the URLs of the HTML file 510 and the image file 520 that display images contain random character strings. For this reason, it is difficult to directly specify the URL based on the HTML file 510 or the image file 520 that displays the image. Furthermore, by activating the information access conversion unit 220 at fixed time intervals using the timer 260, the HTML file 510 for displaying images and the URL of the image file 520 are constantly changed. It is more difficult to know the exact URL for these files.

 However, HTML file 500, HTML file 5

10 If the URL of file 5 20 is known, it will be possible to specify the URL directly to the HTML file, so if necessary to ensure security, However, the following processing may be added.

Restrict access to these files (HTML file 500, HTML file 501, file 520). In other words, access to these files (HTML file 500, HTML file 501, file 502) is restricted to only access from the information access system, and access from outside the information access server ²⁰⁰ is restricted. It is desirable to reject.

In the present embodiment, a WWW server has been described as an example. Of the file server (e.g. FTP, etc.) utilizing the same manner Information access conversion systems in the service, _p also can prevent such direct file access, in this embodiment, the other Huai this against link The files that can be extracted are in HTML format, but the format is not limited to HTML format as long as the file has a hyperlink to another file. Furthermore, in the present embodiment, the information access conversion unit 220 is started by the timer 260, but the user may start the information access conversion unit 220.

 Second Example>

 Hereinafter, an information access system according to a second embodiment of the present invention will be described. In the following description, the same portions as those in the first embodiment will not be repeated.

 FIG. 12 shows the overall configuration of the information access system according to the present embodiment. The difference from the first embodiment is that the information access converter 221 of the information access server 203 does not include a random number generator. Further, in the present embodiment, the address generation unit 228 of the information access conversion unit 203 generates a character string in which the address of the storage destination uniquely corresponds to time such as date.

 For example, the address generation unit 228 generates a value in the format "2001.11.20.22.39.31J" as a value representing time such as a date, so that the generation time can be known from the file name. In addition, by generating a hexadecimal value in the format, for example, "3BFA5D13", it is possible to prevent the generation time from being easily guessed.

The configuration file stored in the configuration file storage unit 250 is described in such a manner that the information access server 201 different from the information access server 203 is obtained to execute file acquisition, and the address The difference is that the address generation rule at the time of generation is described so as to include a character string that uniquely corresponds to time such as a date. The information access server 201 is a different server from the information access server 203, and includes a WWW server unit 211. The WWW server unit 211 includes an HTML file group storage unit 212. The information access server 203 includes a WWW server unit 211. The WWW server section 2 13 includes an HTML file group storage section 2 14. The flow of file storage in this embodiment is the same as that of the file storage according to the first embodiment. However, since the WWW server 201 from which the file is obtained is different from the WWW server 203 from which the file is stored, the file obtaining unit 222 receives the WWW server unit 212 in the information access server 201. To send a file acquisition request. In this way, the information access server, which is the file acquisition source, and the information access server, which is the storage destination, can be separate devices. -The embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims. Industrial applicability

 As described above, according to the information access device and the information access creation method of the present invention, when a user specifies a URL on the Web and requests acquisition of information, the acquisition unit acquires the information. You. The obtained information may be a different address from the first URL or an address created using random numbers. For this reason, the information is stored at a different address from the original URL, and the possibility of the original URL being known is reduced. While limiting direct access to the original URL, information can be provided upon user request to know the generated address. In this way, it is suitable for a process of providing information to a user in response to a user request while restricting access to information on the Web.

Claims

The scope of the claims ' 1. Acquisition means (224) for acquiring information requested by a user; Storage means (2 12, 214) for storing information acquired by the acquisition means (224);  Generating means (228) for generating an address for storing the acquired information based on preset conditions;  Control means for controlling the storage means (212, 214) to store the information in the address generated by the generation means; 2. The information access device further includes random number generation means (226) for generating a random number,  2. The information access device according to claim 1, wherein the generation unit (228) includes a unit for generating the address using a random number generated by the random number generation unit.  3. The information access device further includes detection means for detecting a date and time, and the generation means (228) generates the address using the time detected by the detection means. The information access device according to claim 1, comprising:  4. The generation unit (228) according to claim 1, further comprising: a unit configured to generate an address for storing the acquired information when the storage location of the information is satisfied with a preset storage location. Information access device as described.  5. The information obtained by the obtaining means (224) includes link information to other information,  The information access device,  Extracting means (230) for extracting the link information from the information obtained by the obtaining means (224);  15. The conversion unit according to claim 14, further comprising: a conversion unit configured to convert the link information extracted by the extraction unit in association with the address generated by the generation unit. Information access device. 6. The information access device detects that a preset time has been reached. Setting time detecting means (260) for  When the set time detecting means (260) detects that the preset time has come, the generating means (228) generates an address for storing the acquired information. The information access device according to any one of claims 1 to 4, comprising:  7. an acquisition step of acquiring information requested by the user (S304); a storage step of storing the information acquired in the acquisition step;  A generation step (S308) for generating an address for storing the acquired information based on a preset condition;  A control step of controlling the storage step so as to store the information at the address generated in the generation step (S 308).  8. The information access method further includes a random number generating step of generating a random number,  The information access method according to claim 7, wherein the generation step (S308) includes a step of generating the address using a random number generated in the random number generation step.  9. The information access method further includes a detecting step of detecting a date and time, and the generating step (S308) includes a step of generating the address using the date and time detected in the detecting step. The information access method according to claim 7.  10. The generating step (S 308) includes a step of generating an address for storing the acquired information if the storage location of the information is satisfied with a preset storage location. Information access method described in Section 7.  1 1. The information obtained in the obtaining step (S304) includes link information to other information,  The information access method comprises:  An extraction step (S314) for extracting the link information from the information acquired in the acquisition step (S304); A conversion step of converting the link information extracted in the extraction step (S314) in association with the address generated in the generation step (S308). The information access method according to any one of claims 7 to 10, further comprising:  1 2. The information access method further includes a set time detecting step of detecting that a preset time has been reached,  The generation step (S 308) includes a step of generating an address for storing the acquired information when it is detected that a preset time has been reached in the set time detection step. An information access method according to any one of claims 7 to 10.  13. A recording medium recording a program for realizing the information access method according to any one of claims 7 to 10 using a computer.  14. A recording medium recording a program for realizing the information access method according to claim 11 using a computer.  15. A recording medium recording a program for realizing the information access method according to claim 12 using a computer.