JP2004341771A - Data transfer method and data transfer server - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data transfer server to surely manage data for transmission without imposing any labor on a transmitter/receiver. <P>SOLUTION: This data transfer server is configured so the data for transmission are specified, and the presence/absence of the matching of a transmission request is decided, and the data for transmission are transferred after confirming the matching of the transmission request by generating file ID and a matching check value for data for transmission transmitted from a user terminal, and storing the data for transmission by associating the data for transmission with the file ID and the matching check value, and transmitting access destination information including the file ID and the matching check value to a user terminal designated as the destination of transmission of the data for transmission, and extracting the file ID and the matching check value included in a transfer request from the user terminal based on the access destination information, and comparing the extracted file ID and matching check value with the file ID and matching check value associated with the data for transmission. A data transfer method for surely managing the data for transmission without imposing any labor on the transmitter/receiver, by using the data transfer server is provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a data transfer method and a data transfer server for transmitting data such as an electronic file via a computer network.
[0002]
[Prior art]
As a method of transmitting electronic data via a network, it is common to attach a data file to an e-mail using the Internet or the like. However, if the file size of the data attached to the e-mail is too large, the operation may fail. May become unstable and transmission may not be possible. Therefore, a method of efficiently transmitting a large amount of data by transferring data transmitted from a sender in a server has been conventionally proposed (for example, Patent Documents 1 to 3).
[0003]
In the data transfer method described in Patent Literature 1, when a file is uploaded from a transmitting computer to a server, the server transmits a notification to that effect to the receiving computer, and the receiving computer can download the file from the server. ing.
[0004]
Further, the data transfer method described in Patent Document 2 transmits an identification reference including a sign of a place where electronic data is stored from a supplying user to a receiving user, so that the receiving user can identify the identification reference from the receiving user. It enables access to electronic data corresponding to The supply-side user can receive a notification signal indicating that a request for access to electronic data has been made.
[0005]
Further, in the data transfer method described in Patent Document 3, points for accessing electronic data are transmitted by e-mail.
[0006]
[Patent Document 1]
JP 10-154110 A
[Patent Document 2]
JP-A-6-67999
[Patent Document 3]
JP-A-6-152641
[Problems to be solved by the invention]
However, in the conventional data transfer method, since sufficient attention has not been paid to management of a plurality of electronic data stored in the server, the number of users increases and a large number of electronic data is uploaded to the server. In such a case, there is a risk that the user may make a mistake in the downloaded file or that the contents of the downloaded file may be viewed by others.
[0010]
The present invention has been made in order to solve such a problem, and an object of the present invention is to provide a data transfer method and a data transfer server capable of reliably managing transmission data without imposing a burden on a transmitter / receiver. I do.
[0011]
[Means for Solving the Problems]
The object of the present invention is a method for transferring transmission data transmitted from a user terminal via a network to one or more other user terminals, which are transmission destinations, via the network. Generating a file ID and a random consistency check value capable of specifying the transmission data for the transmission data transmitted from the terminal, and associating the transmission data with the file ID and the consistency check value Transmitting the access destination information including the file ID and the consistency check value to a user terminal designated as the transmission destination of the transmission data; and transmitting the user based on the access destination information. Extracting, by a transfer request from the terminal, the file ID and the consistency check value included in the transfer request; By comparing the file ID and the consistency check value with the file ID and the consistency check value associated with the transmission data, the transmission data is specified and the presence or absence of consistency of the transmission request is determined. And a step of transferring the transmission data to the user terminal that has requested the transfer after confirming the consistency of the transmission request.
[0012]
In addition, the object of the present invention is to connect a plurality of user terminals via a network and transmit transmission data transmitted from one of the user terminals to one or a plurality of other user terminals which are transmission destinations. A server that generates a file ID and a random consistency check value capable of specifying the transmission data for the transmission data transmitted from the user terminal, and transmits the transmission data to the file. An access destination information including the file ID and the integrity check value is stored in association with an ID and a consistency check value, and is transmitted to a user terminal designated as a transmission destination of the transmission data. Based on a transfer request from the user terminal based on the file ID, the file ID and the consistency check value included in the transfer request are extracted. By comparing the transmission check value with the file ID and the consistency check value associated with the transmission data, the transmission data is specified, and the presence / absence of the transmission request is determined. This is achieved by the data transfer server that transfers the transmission data to the user terminal that has requested the transfer after the consistency check of the data.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an overall configuration diagram of a system including a data transfer server according to an embodiment of the present invention. As shown in FIG. 1, the data transfer server 1 is connected to a plurality of user terminals 4 via a network 2 such as the Internet, and receives data transmitted from any one of the user terminals 4, The data is transmitted to one or a plurality of user terminals 4 as transmission destinations. Each user terminal 4 has a web page browsing function (web browser) and an e-mail transmission / reception function (mailer). The web browser preferably supports an encryption protocol such as SSL (Secure Sockets Layer).
[0014]
FIG. 2 shows a schematic configuration of the data transfer server. The data transfer server 1 includes a transmission / reception unit 12, a control unit 14, and a storage unit 16, and can provide a web page in response to access from the user terminal 4. Various data files and application files are stored in the storage unit 16, and the application files operate in response to a command from the control unit 14. The data transfer server 1 can be configured by one piece of hardware, but can also be configured by connecting a database server and a web server via a network, for example.
[0015]
The data files include a sender information file 22, a transmission data file 24, a data management file 26, a destination management file 28, and the like. The sender information file 22 includes sender information for specifying the sender such as a user name, a password, and an e-mail address, and the transmission data file 24 includes transmission data obtained from the sender. ing. As shown in FIG. 3, the data management file 26 includes a unique file ID and a consistency check value corresponding to the file name of each transmission data. As shown in FIG. 4, the destination management file 28 includes information such as one or more destination e-mail addresses corresponding to the file IDs, the number of downloads at each destination, and the download date and time.
[0016]
In addition, as an application file in the storage unit 16, an authentication unit 32 that determines whether or not the user accessed from the user terminal 4 is appropriate, a data acquisition unit 34 that obtains transmission data of the user, and the presence of transmission data is transmitted. There is a notification unit 36 for notifying first, a data management unit 38 for managing the acquired transmission data, and a data transfer unit 40 for transmitting the transmission data to the transmission destination.
[0017]
Next, the operation of the data transfer server 1 having the above configuration will be described. A user who uses the data transfer server 1 for the first time needs to perform user registration of the data transfer server 1 first. The user registration can be performed on the web of the data transfer server 1 or can be performed using mail, but when performing the registration on the web, the user name, address, e-mail address, etc. By inputting the information on a predetermined input screen of the user terminal 4 and transmitting it to the data transfer server 1, the data transfer server 1 adds a password to the received information and stores it in the sender information file 22. The password is transmitted to the user terminal 4 by e-mail or the like.
[0018]
After the user registration is completed, the user can transmit the transmission data by accessing the home page of the data transfer server 1. This processing procedure will be described with reference to the sequence diagram shown in FIG.
[0019]
When a user who wants to transmit data inputs a predetermined URL (Uniform Resource Locator) at the user terminal 4 (step S1), the data transfer server 1 receives this and displays a login screen shown in FIG. It is displayed on the terminal 4 (step S2). On this login screen, when the user inputs a user name and a password and clicks a "Send" button (step S3), the input information is transmitted to the data transfer server 1 by an encryption protocol such as SSL, and the data transfer server 1 Authentication based on the sender information file 22 is performed by the authentication unit 32 (step S4). If the authentication by the authentication unit 32 passes, the data exchanged between the data transfer server 1 and the user terminal 4 thereafter is encrypted and authenticated by the above-mentioned encryption protocol. Since the SSL encryption processing and the authentication processing are widely known techniques, detailed descriptions thereof will be omitted.
[0020]
The data transfer server 1 displays the upload screen shown in FIG. 7 on the user terminal 4 (step S5). On this upload screen, the user inputs the name of the directory in which the data for transmission is stored, enters a comment in the memo box as necessary, and clicks the "Upload" button (step S6). The data is transmitted to the data transfer server 1. The data management unit 38 generates a file ID for specifying the transmission data and a consistency check value for the access check with respect to the acquired transmission data, and then adds the user ID and the user ID to the file name of the transmission data. The consistency check value is associated and stored in the data management file 26 (step S7). The file ID is uniquely generated each time transmission data is acquired. Further, the consistency check value functions as an encryption for preventing the transmission data from being viewed by a third party other than the transmission destination. In the present embodiment, the consistency check value is configured by a combination of a 10-digit number and an alphabet. I have.
[0021]
Based on the file ID and the consistency check value thus obtained, the data management unit 38 changes the file name of the acquired transmission data to a unique file ID and stores it in the transmission data file 24 (step S8). As a result, the transmission data can be stored in association with the file ID and the consistency check value, and even if the transmission data of each user has the same file name, the transmission data can be accurately identified. it can.
[0022]
In addition, the data transfer server 1 displays a notification mail transmission screen shown in FIG. 8 on the user terminal 4 in response to the click of the “upload” button on the user terminal 4 (step S9). On this notification mail transmission screen, the user inputs the name and mail address of one or more transmission destinations, inputs notification information to be described as the text of the mail, or selects as appropriate from a sample sentence, and then clicks the "confirm" button. . Thereafter, a confirmation screen (not shown) is displayed on the user terminal 4. When the user clicks a “send” button on this screen, the input information is transmitted to the data transfer server 1. (Step S10). The data management unit 38 associates one or a plurality of destination mail addresses with the number of downloads at each destination (initially 0 times) with the file ID of the file for transmission and stores them in the destination management file 28.
[0023]
Then, the notifying unit 36 adds the download destination of the transmission file, the file ID and the consistency check value corresponding to the transmission file to the notification information of the sender, and sends the e-mail to all the transmission destination mail addresses. It transmits (step S11). As a result, the destination user terminal 4 receives the notification mail as shown in FIG. 9 (step S12).
[0024]
The notification mail shown in FIG. 9 displays a download destination URL which is access destination information of the file for transmission, and the URL includes a file ID and a consistency check value corresponding to the file for transmission as a query character string. I have. When the user makes a transmission request for transmission data, the user inputs or clicks this URL on the screen, and a transmission request is made to the data transfer server 1 (step S13). The data management unit 38 extracts the file ID and the consistency check value included in the transfer request, and compares the file ID and the consistency check value with the file ID and the consistency check value of the data management file 26. I do. Then, the transmission data associated with the extracted file ID is specified, and the presence or absence of the consistency of the transfer request is determined (step S14).
[0025]
When it is determined that the transfer request has consistency, the data transfer server 1 causes the user terminal 4 to display a download screen shown in FIG. 10 (step S15). On the download screen, the name of the transmission data uploaded by the sender is displayed. When the user clicks the “download” button (step S16), the data transfer unit 40 displays the transmission data selected by the user. Transfer is started (step S17). It is preferable that the file name of the transmission data displayed on the download screen be the original file name of the transmission data based on the data management file 26, not the file ID assigned by the data management unit 38.
[0026]
As described above, the data that can be downloaded by the user is only the transmission data to which the user is a destination, and the transmission data can be reliably identified based on the file ID. There is no possibility that the user mistakes the download file.
[0027]
Further, even if a third party other than the transmission destination user attempts to view transmission data addressed to another person and corrects the file ID attached to the download destination URL and makes a transfer request, the data management unit 38 does not If it is determined that there is no file, the process does not proceed to the next step, so that the secrecy of the transmission file can be ensured.
[0028]
When the file transfer is completed, the data management unit 38 increases the number of downloads corresponding to the transmission destination by one in the transmission destination management file 28 (step S18).
[0029]
The data sender can check the download status at each destination on the user terminal 4 at any time. After accessing the web page of the data transfer server 1 from the user terminal 4 and inputting a user name and a password as described above, a “registration file list” button is clicked on the upload screen shown in FIG. When performed (step S19), the data transfer server 1 displays the registered file list screen shown in FIG. 11 on the user terminal 4 (step S20). On the registered file list screen, one or a plurality of transmission files uploaded by the sender are displayed in a list, and the number of downloads is displayed in the column of “notification information” corresponding to each transmission file. The number of downloads corresponds to the total number of destinations whose download count calculated based on the destination management file 28 is one or more, and a transfer status indicating that the transmission data has been transferred to the destination user. Information. That is, if the total number of users specified as the transmission destinations matches the number of downloads, it is understood that the transmission data has been transferred to all the transmission destinations. As described above, even if the user who has received the transmission data does not contact the sender, the sender can easily confirm the transfer status of the transmission data simply by accessing a predetermined web page. The burden on the person can be avoided. The transfer status information indicating that the transmission data has been transferred does not necessarily need to be based on the number of downloads as in the present embodiment, and the presence or absence of download may be determined using a flag.
[0030]
If the user wants to know the download destination and the date and time, the user clicks a “detail” button, and desired information is displayed on the user terminal 4 based on the destination management file 28. If the user wants to reconfirm the transmission destination, the user clicks the “notification” button, and the processing after step S8 is performed, and the notification mail is retransmitted to the transmission destination. To delete the uploaded transmission file, click the “Delete” button.
[0031]
Note that the accounting process associated with the data transfer can be performed, for example, by linking to the total capacity of uploadable files and the total number of downloadable files.
[0032]
【The invention's effect】
As is apparent from the above description, according to the present invention, it is possible to provide a data transfer method and a data transfer server that can reliably manage transmission data without imposing a burden on a transmitter / receiver.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a system including a data transfer server according to an embodiment of the present invention.
FIG. 2 is a block diagram showing a schematic configuration of the data transfer server.
FIG. 3 is a schematic diagram illustrating a configuration of a data management file.
FIG. 4 is a schematic diagram showing a configuration of a destination management file.
FIG. 5 is a sequence diagram showing a processing procedure of a data transfer method according to an embodiment of the present invention.
FIG. 6 is a diagram illustrating an example of a login screen.
FIG. 7 is a diagram illustrating an example of an upload screen.
FIG. 8 is a diagram showing an example of a notification mail transmission screen.
FIG. 9 is a diagram illustrating an example of a notification mail.
FIG. 10 is a diagram showing an example of a download screen.
FIG. 11 is a diagram showing an example of a registered file list screen.
[Explanation of symbols]
Reference Signs List 1 data transfer server 2 network 4 user terminal 12 transmission / reception unit 14 control unit 16 storage unit 22 sender information file 24 transmission data file 26 data management file 28 destination management file 32 authentication unit 34 data acquisition unit 36 notification unit 38 data Management unit 40 Data transfer unit

Claims (4)

A method of transferring transmission data transmitted from a user terminal via a network to one or more other user terminals, which are transmission destinations, via a network,
Generating, for the transmission data transmitted from the user terminal, a file ID capable of specifying the transmission data and a random consistency check value;
Storing the transmission data in association with the file ID and the consistency check value;
Transmitting access destination information including the file ID and the consistency check value to a user terminal specified as a transmission destination of the transmission data;
Extracting, by a transfer request from the user terminal based on the access destination information, the file ID and the consistency check value included in the transfer request;
By comparing the extracted file ID and consistency check value with the file ID and consistency check value associated with the transmission data, the transmission data is specified and the consistency of the transmission request is identified. Determining the presence or absence;
Transferring the transmission data to the user terminal that has requested the transfer after confirming the consistency of the transmission request. The step of transferring the transmission data includes a step of generating and storing transfer status information indicating that the transmission data has been transferred,
The data transfer method according to claim 1, further comprising transmitting the transfer status information in response to a transfer status confirmation request from a user who has transmitted the transmission data. A server that is connected to a plurality of user terminals via a network and transfers transmission data transmitted from any of the user terminals to one or more other user terminals that are transmission destinations,
For transmission data transmitted from the user terminal, generate a file ID and a random consistency check value that can specify the transmission data,
Storing the transmission data in association with the file ID and the consistency check value;
Transmitting access destination information including the file ID and the consistency check value to a user terminal designated as a transmission destination of the transmission data;
By a transfer request from the user terminal based on the access destination information, extract the file ID and the consistency check value included in the transfer request,
By comparing the extracted file ID and consistency check value with the file ID and consistency check value associated with the transmission data, the transmission data is specified and the consistency of the transmission request is identified. Judge the presence or absence,
A data transfer server that transfers the transmission data to the user terminal that has requested the transfer after confirming the consistency of the transmission request. By transferring the transmission data, transfer status information indicating that the transmission data has been transferred is generated and stored,
The data transfer server according to claim 3, wherein the transfer status information is transmitted in response to a transfer status confirmation request from a user who has transmitted the transmission data.

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