JP2006113721A - Data transfer method and data transfer system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data transfer method which prevents access from un unspecified user and reliably transfers data to a specific user. <P>SOLUTION: When a first terminal of a first user transfers data to a second terminal of a second user through a server on a communication network, the server, according to transmission request access from the first terminal, provides, to the first terminal, a list of partner users including the second user to whom the first user can transmit, the first terminal selects the second user from the partner users included in the list and transmits data for the second user to the server. The server, on receiving the data, stores the data so that only the second terminal can access the data, and transmits data to the second terminal according to reception request access from the second terminal. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to data transfer via a server on a communication network, and in particular, a data transfer method and data transfer capable of preventing data transmission from an unspecified party and transferring data while maintaining confidentiality. About the system.

  As a means for transferring data via a communication network such as the Internet, for example, there is a method of sending data by attaching it to an e-mail. There is also a method of transferring data using FTP.

  Furthermore, a so-called storage service is known as another data transfer means. The storage service is a mechanism in which a server on a communication network manages data files from users and can store and share the data. On the server, a shared data area that can be accessed only by users who are permitted to access by predetermined authentication is provided, and data transfer is realized by uploading and downloading data between the users.

  However, in the method of attaching data to an e-mail and sending it, when attaching a large amount of data to an e-mail, it takes a long time to send and receive data and places an excessive load on the mail server. It's fragile and sometimes it can cause trouble if your email software is broken. Also, until the reception is completed normally, it is not known who sent what kind of data and how much data. Even if the sent data is unnecessary, there is a disadvantage that confirmation or deletion cannot be performed unless the data is received once.

  In the data transfer method using FTP, data is not easily damaged, stable data transfer is possible, and large-capacity data transfer is also possible. However, it is necessary to install dedicated application software, and it is necessary to set it. Setting requires a certain level of expertise and is generally difficult to understand. In addition, since the data sender and the receiver directly communicate with each other, they cannot be used unless both are online. Furthermore, when an anonymous third party connects, there is security concern.

  In addition, in the conventional method of sharing a data area such as a storage service, since a plurality of users permitted by authentication can access the data area, only data that can be downloaded to all accessible users can be obtained. I can't upload. That is, data cannot be transferred only to a specific user among a plurality of users permitted to access.

  Accordingly, an object of the present invention is to provide a simpler and more stable data transfer method and data transfer system.

  Another object of the present invention is to provide a data transfer method and a data transfer system that prevent access from unspecified users and reliably transfer data to specific users.

  Another object of the present invention is to provide a data transfer method and a data transfer system capable of preventing data transmitted to the user from being received by another user.

  In order to achieve the above object, a first data transfer method of the present invention transfers data from a first terminal of a first user to a second terminal of a second user via a server on a communication network. In the data transfer method, the server displays a list of counterpart users to which the first user including the second user can transmit in response to a transmission request access from the first terminal. And the first terminal selects the second user from the other users included in the list, transmits data addressed to the second user to the server, and the server transmits the data to the server. When received, the data is stored so that only the second terminal is accessible, and the server transfers the data to the second terminal in response to a reception request access from the second terminal. Characteristic To.

  According to a second data transfer method of the present invention, in the first data transfer method, the server transmits data transmitted from the terminal of the counterpart user of the first user to the counterpart user from the first user. Information on whether or not to permit the reception of the data, register the information in the reception permission list, refer to the reception permission list in response to the transmission request access from the first terminal, and Extracting a partner user who is permitted to receive data transmitted from the user, and providing the extracted partner user to the first terminal as a partner user that can be transmitted by the first user. And

  According to a third data transfer method of the present invention, in the first data transfer method, the server stores the second user stored in the server in response to a reception request access from the second terminal. A list of addressed data is provided to the second terminal, and data selected by the second terminal from the list is transferred to the second terminal.

  According to a fourth data transfer method of the present invention, in the first data transfer method, when the server receives data addressed to the second user from the first terminal, the second user The reception of data addressed to the second user is notified.

  According to a fifth data transfer method of the present invention, in the first transfer method, when the server transmits data addressed to the second user to the second terminal, the first user is notified of the first data transfer method. The completion of the transfer of the data addressed to the second user to the second terminal is notified.

  According to a sixth data transfer method of the present invention, in the first transfer method, the first terminal and the second terminal are connected to the server via the Internet, and the first terminal and the second terminal The second terminal uses the browser for browsing the Internet to access the server and transmit / receive data.

  In addition, the first configuration of the data transmission system of the present invention for achieving the above object is to transmit data from the first terminal of the first user to the second terminal of the second user via the communication network. In the data transfer system to transfer, in response to a transmission request access from the first terminal, a list of counterpart users to which the first user including the second user can transmit is provided to the first terminal. The first means and data addressed to the second user selected by the first terminal from the list are received, and the received data is stored so that only the second user can access it. It is characterized by comprising second means and third means for transmitting the data to the second terminal in response to a reception request access from the second terminal.

  According to a second configuration of the data transfer system of the present invention, in the first configuration, further, reception of data transmitted from the first user by the counterpart user from the counterpart user terminal of the first user. And a fourth means for registering the information in the reception permission list, the first means according to the transmission request access from the first terminal, With reference to the reception permission list, a partner user permitted to receive data transmitted from the first user is extracted, and the extracted partner user is defined as a partner user to whom the first user can transmit. Provided to the first terminal.

  According to a third configuration of the data transfer system of the present invention, in the first configuration, the third means stores the server stored in the server in response to a reception request access from the second terminal. A list of data addressed to a second user is provided to the second terminal, and data selected by the second terminal from the list is transferred to the second terminal.

  According to a fourth configuration of the data transfer system of the present invention, in the first configuration, when the second means receives data addressed to the second user from the first terminal, the second configuration A fifth means for notifying the user of reception of data addressed to the second user is provided.

  According to a fifth configuration of the data transfer system of the present invention, in the first configuration, the third means further transfers the data addressed to the second user to the second terminal. Sixth means for notifying the user of completion of transfer of data addressed to the second user to the second terminal is provided.

  According to the present invention, when data is transferred via a communication network such as the Internet, data transmission from users other than the reception-permitted users registered in advance is not received. Then, it is possible to transfer confidential data without the data transmitted to the self being seen by other reception-permitted users.

  Embodiments of the present invention will be described below with reference to the drawings. However, such an embodiment does not limit the technical scope of the present invention.

  FIG. 1 is a diagram showing a block configuration example of a data transfer system according to an embodiment of the present invention. In FIG. 1, the data transfer system includes a data transfer server 1 connected to a plurality of terminals (in the figure, four terminals a, b, c, and d as an example) via a communication network such as the Internet. Is done. Terminals a, b, c, and d are terminals operated by users A, B, C, and D, respectively.

  The hardware configuration of the data transfer server 1 is not shown, but includes an arithmetic device such as a CPU, a storage device such as a hard disk device, a memory for arithmetic processing, an external interface for communication, etc. It is constructed by a computer device.

  As shown in FIG. 1, the data transfer server 1 includes a user list 10, a reception permission list 20, and a data storage database 30 as information necessary for data transfer between users.

  The user list 10 is a list of information regarding users who can access the data transfer server 1 and includes, for example, user-specific information, a user ID, and a password for each user. The user specific information is information such as a user name, address, and telephone number, and the user ID is an ID assigned at the time of registration in order to identify the user. The password is information for identifying the user together with the user ID. When accessing (logging in) the data transfer server 1, the user operates his / her terminal, inputs the user ID and password, and transmits the data to the data transfer server 1. The data transfer server 1 refers to the user list 10. When it is determined that the correspondence between the user ID and the password is correct, access from the user is permitted, and the user can receive the data transfer service by the data transfer server 1.

  The reception permission list 20 is a list in which partner users who are permitted to receive data are registered for each user. Table 1 below is a specific example of the reception permission list 20 of the users A, B, C, and D. The reception permission list will be further described with reference to Table 1.

  The users A, B, C, and D are all users who can access the data transfer server 1 and register the other users who are permitted to receive data in advance. The data transfer server 1 stores it as a reception permission list 20.

  In Table 1, for example, a user A registers users B, C, and D as reception permitted destinations. That is, user A permits the reception of data addressed to himself / herself from users B, C, and D. This means that the users B, C, and D can transmit data to the user A from the user B, C, and D sides. Similarly, user B registers users A and D as reception-permitted destinations. Therefore, users A and D can transmit data to user B. In addition, since user C permits the reception of data addressed to himself from users B and D, users B and D can transmit data to user C. Further, since the user D registers the users A and B as the reception permitted destinations, the users A and B can transmit data to the user D.

  Table 2 below shows a list of counterpart users to whom each user can transmit according to the reception permitted destinations in Table 1 above.

  As is clear from Table 1, users B and D are permitted to receive user A. Therefore, as shown in Table 2, the transmission destinations of user A are users B and D. Similarly, transmission destinations are determined for users B, C, and D.

  In the present embodiment, as described above, a partner user whose reception is permitted for each user is registered in advance in the data transfer server 1. The data transfer server 1 operates so as to permit only data transmission to the other user who can transmit based on the reception permission list.

  As an example, when the relationship between the user A and the user C is seen in the registration situation as shown in Table 1, since the user A has registered the user C as a reception permitted destination, the user C stores data on the user A. However, since user C has not registered user A as a reception-permitted destination, user A cannot transmit data to user C.

  Returning to FIG. 1, the data storage database 30 is a database for storing data transmitted from the user terminal. From each user's terminal, data to be transmitted and information on the destination user are transmitted to the data transfer server 1. Upon receiving the transfer data, the data transfer server 1 stores the received data in the data storage database 30 in association with the destination user. Then, the data transfer server 1 notifies each user's terminal of a list of data transmitted to each user based on the access from each user. By selecting data to be received by each user's terminal, the data transfer server 1 transmits the selected data to each user's terminal. In other words, each user can view only a list of data transmitted to the user, and can download only data transmitted to the user. Other users cannot access data sent to them. As described above, the data storage database 30 may be configured to store data in association with destination users, and a storage area is set for each destination user. The data may be classified and stored.

  In this way, the data transfer server 1 accepts only data addressed to the other user who can transmit based on the reception permission list 20, stores it in the data storage database 30, and transmits the data transmitted to each user. Only to that user. Therefore, each user can receive data only from the other user permitted to receive, and can prevent other users from accessing the data transmitted to the user.

  In a so-called storage service, a user creates a disk area on a server on a communication network and gives another specific user access authority to the disk area, so that another user can access the disk area. Download the uploaded data. Thereby, data transfer is realized. For example, when the user B, C, and D are granted access permission authority for the disk area of the user A, when the user B transmits data to the user A, the other users C and D are also transferred from the user B. Can be accessed. In order for the data from user B to be accessible only to user A, it is necessary to provide another disk area accessible only by user A and user B and upload the data there. That is, it is necessary to provide disk areas as many as the number of combinations of users permitted to access, which is inefficient.

  On the other hand, according to the present embodiment, by registering the other user who is permitted to receive in the reception permitted destination list, it is possible to prevent transmission from other than the registered user, and from one registered user. It is possible to prevent other registered users from receiving (accessing) data addressed to the user. As described above, the user on the receiving side can be designated by the management of the user on the receiving side, and the data addressed to the user can be received without being seen by other users on the transmitting side.

  Next, the operation of the data transfer server 1 will be described. FIG. 2 is a diagram for explaining the operation process of the data transfer server 1. FIG. 2 illustrates a case where data is transferred from the terminal A of the user A to the terminal b of the user B.

  User A operates terminal a to make a transmission access request to data transfer server 1 (S10). In response to this, the data transfer server 1 requests input of an authentication user ID and password (login request) (S11). When the user ID and password are transmitted from the terminal a (S12), the data transfer server 1 refers to the user list 10 and authenticates the user A (S13). When the authentication is correctly performed, the data transfer server 1 refers to the reception permission list 20 to search for and extract users who are permitted to receive data from the user A (S14), and as a destination list Then, it transmits to terminal A of user A (S15). For example, in Table 1 above, users who are permitted to receive data from user A are users B and D. Therefore, the users B and D are notified as possible transmission destinations. When the destination list is notified, the user A selects a destination and transmission data (S16). In this embodiment, user B is designated as the transmission destination.

  FIG. 3 is a screen example of the terminal “a” of the user A on which the transmission destination list is displayed. In the screen of FIG. 3, the users B and D are displayed as selectable destination lists. Since users other than users B and D are not displayed, users other than users B and D cannot be designated as destination users. Further, the screen of FIG. 3 is configured so that data can be selected along with selection of a transmission destination. Of course, the transmission destination selection screen and the data selection screen may be different screens. For example, by clicking the reference button, a list of data stored in the terminal a is displayed, and data to be transmitted is selected from the list. By confirming the transmission destination user (user B) and the transmission data on a predetermined confirmation screen (not shown), the data designated by the transmission destination user is uploaded to the data transfer server 1 (S17). In data upload and download, data is encrypted. For data encryption, for example, SSL encrypted communication is used. Therefore, data eavesdropping is prevented. The encryption means is not limited to SSL, and other means may be used.

  The data transfer server 1 stores the uploaded data in the data storage server 30 in association with the destination user (S18).

  Preferably, when the data transfer server 1 receives newly uploaded data, the data transfer server 1 transmits an e-mail notifying the arrival of the data to the destination user (user B) of the data (S19).

  For example, when the user B receives the data arrival notification mail from the data transfer server 1 at the terminal b, the user B makes a reception access request to the data transfer server 1 (S20). In response to this, the data transfer server 1 requests input of a user ID and password for authentication (login request) (S21). When the user ID and password are transmitted from the terminal b (S22), the data transfer server 1 refers to the user list 10 and authenticates the user B (S23). When the authentication is correctly performed, the data transfer server 1 refers to the data storage database 30 to search and extract the data transmitted to the user B (S24), and the receivable data list of the user B is stored. It transmits to the terminal b (S25). For example, in Table 1 above, users who are permitted to receive data from user A are users B and D.

  FIG. 4 is a screen example of terminal B of user B on which a list of receivable data is displayed. In the screen of FIG. 4, the data transmitted to the user B is displayed in a selectable list, and the transmission user and transmission date / time information for each data are also displayed. User B selects data to be downloaded (S26). By confirming the data to be downloaded on a predetermined confirmation screen (not shown) or the like, the data selection information is transmitted to the data transfer server 1 (S27). When the data transfer server 1 receives the data selection information, the data selection information is selected. The transmitted data is transmitted to the terminal b (S28). That is, the terminal b downloads the selected data. As described above, the downloaded data is encrypted using SSL encrypted communication or the like. Thus, the data transmitted from the user A to the user B is received by the user B.

  Preferably, when the data transfer server 1 transmits data to the user B, the data transfer server 1 transmits an e-mail notifying that the data has been downloaded by the user B to the user A (S29). Thereby, the user A can confirm that the user B has received the data. Alternatively, the data transfer server 1 may accumulate download history information and notify the transmission status of the transmission destination user on the WEB screen based on a request from the transmission source user.

  As described above, in the data transfer method according to the embodiment of the present invention, a user first registers a user who is permitted to receive data. Then, the user on the transmission side does not receive data transmission from an unknown user by making it possible to transmit data only to users who are permitted to receive the data.

  When the data is uploaded to the data transfer server 1, only the destination user is stored so that it can be downloaded. Since users other than the destination user cannot access the data, data that requires confidentiality can be transferred. is there.

  In addition, the data transfer method in the present embodiment can be realized by using a browser that allows a terminal to connect to the Internet and browse the Internet, and does not require special application software. Therefore, data transfer can be performed more easily. Furthermore, since the data to be uploaded or downloaded is automatically encrypted and uploaded and downloaded according to the settings on the data transfer server 1 side, it is not necessary for the user to encrypt the data, and security during communication Is also secured. Furthermore, there is no need to worry about the size of data to be transmitted, and large-capacity data can be transferred.

It is a figure which shows the block structural example of the data transfer system in embodiment of this invention. It is a figure explaining the operation | movement process of the data transfer server. It is an example of the screen of the terminal a of the user A on which the transmission destination list is displayed. It is an example of the screen of the terminal b of the user B where the receivable data list was displayed.

Explanation of symbols

  1: data transfer server, a, b, c, d: terminal

Claims (11)

In a data transfer method for transferring data from a first terminal of a first user to a second terminal of a second user via a server on a communication network,
In response to a transmission request access from the first terminal, the server provides the first terminal with a list of counterpart users to which the first user including the second user can transmit,
The first terminal selects the second user from the other users included in the list, transmits data addressed to the second user to the server,
When the server receives the data, the server stores the data so that only the second terminal can access it,
The server transfers the data to the second terminal in response to a reception request access from the second terminal. In claim 1,
The server receives information about whether or not the partner user permits reception of data transmitted from the first user from the terminal of the partner user of the first user, and receives the information from the reception permission list. Registered with
In response to a transmission request access from the first terminal, with reference to the reception permission list, a partner user who is permitted to receive data transmitted from the first user is extracted, and the extracted partner user is extracted. Is provided to the first terminal as a counterpart user to which the first user can transmit. In claim 1,
In response to a reception request access from the second terminal, the server provides the second terminal with a list of data addressed to the second user stored in the server, and from the list A data transfer method comprising transferring data selected by the second terminal to the second terminal. In claim 1,
When the server receives data addressed to the second user from the first terminal, the server notifies the second user of reception of data addressed to the second user. . In claim 1,
When the server transmits data addressed to the second user to the second terminal, the server notifies the first user of completion of transfer of the data addressed to the second user to the second terminal. A data transfer method characterized by the above. In claim 1,
The first terminal and the second terminal are connected to the server via the Internet,
The data transfer method according to claim 1, wherein the first terminal and the second terminal access the server using a browser for browsing the Internet to transmit and receive data. In a data transfer system for transferring data from a first terminal of a first user to a second terminal of a second user via a communication network,
A first means for providing the first terminal with a list of counterpart users that can be transmitted by the first user including the second user in response to a transmission request access from the first terminal;
Second means for receiving data addressed to the second user selected by the first terminal from the list, and storing the received data accessible only to the second user;
And a third means for transmitting the data to the second terminal in response to a reception request access from the second terminal. In claim 7,
Furthermore, information about whether or not the partner user permits reception of data transmitted from the first user is received from the terminal of the partner user of the first user, and the information is registered in the reception permission list. Having a fourth means to
The first means refers to the reception permission list in response to a transmission request access from the first terminal, and extracts a partner user who is permitted to receive data transmitted from the first user. The data transfer system is characterized in that the extracted counterpart user is provided to the first terminal as a counterpart user that can be transmitted by the first user. In claim 7,
The third means provides the second terminal with a list of data stored in the server and addressed to the second user in response to a reception request access from the second terminal, and the list A data transfer system, wherein data selected by the second terminal is transferred to the second terminal. In claim 7,
When the second means receives data addressed to the second user from the first terminal, the second means comprises fifth means for notifying the second user of reception of data addressed to the second user. A data transfer system characterized by that. In claim 7,
When the third means transfers the data addressed to the second user to the second terminal, the transfer of the data addressed to the second user to the second terminal is completed to the first user. A data transfer system comprising a sixth means for notifying.

Images