JP2016218937A - Data distribution method and system and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data distribution method and system that allow a user to manage decryption codes and are highly convenient, and a computer program.SOLUTION: A server 2 provided on an information network (1) receives data which is uploaded from a user terminal (3) connected via the Internet 1; encrypts and stores the received data; codes information for identifying the stored data and a decryption code for decrypting the data, into a two-dimensional image pattern; and transmits the obtained two-dimensional code to a user terminal (3). In addition, in response to access based on the two-dimensional code, the server 2 decrypts corresponding data and provides it to an access source (4).SELECTED DRAWING: Figure 1

Description

The present invention relates to a data distribution system and system, and a computer program.

As a method for distributing data to others via a network, a method using online storage is known. Online storage, also called file hosting or cloud storage, is a service that lends disk space of server machines on the Internet to users. In this service, a user uploads a file to a disk space that he or she borrows and makes it available to others, so that the target person can download the file.

There is also a service for uploading data to online storage and processing the data using an application provided on the Internet.

Further, as a technique for maintaining the security of data distribution, Patent Document 1 discloses that a part of image information is converted into code image information and transmitted by fax, and the remaining part is transmitted via a network. Yes.

JP 2006-295758 A

Data uploaded to online storage itself is considered to be stored as an encrypted file on the server side, but users who log in to the online storage service and those who can publish can view the data. . Login requires a password, but the password is managed on the server side. For this reason, if the login password may be leaked, it is impossible to ensure the confidentiality of the data.

In order to increase the confidentiality of the data, it is possible to upload the data encrypted on the user side. However, it takes time for encryption for the user, and the descrambling code must be separately distributed to the public. For public users, a password for logging in to the service and a descrambling code are required, which reduces convenience.

Although the technique disclosed in Patent Document 1 can prevent erroneous transmission to anyone other than the disclosure target person, it does not increase the confidentiality of data in the server, and uses two paths for distributing data. There are difficulties in convenience.

An object of the present invention is to solve such problems, and to provide a data distribution method and system, and a computer program that allow a user to manage a descrambling code and is highly convenient.

According to the first aspect of the present invention, a step of receiving data uploaded from a user terminal executed by a server on the information network and connected via the information network, and a step of encrypting and storing the received data And a step of encoding information for identifying the stored data and a descrambling code for decrypting the data into a two-dimensional pattern, and the two-dimensional code obtained by the encoding to the user terminal And a step of decrypting corresponding data and providing it to an access source terminal for an access based on a two-dimensional code from a terminal connected via an information network. A data distribution method is provided.

As the two-dimensional code, a matrix code in which small squares such as a QR code (registered trademark) are two-dimensionally arranged can be used. In addition, a barcode (a code is a one-dimensional array, but a pattern is two-dimensional and is included in the two-dimensional code in this specification) or a stack code in which one-dimensional barcodes are stacked one above the other are used. You can also.

In the providing step, the decrypted data can be divided and provided so that the original data cannot be easily extracted from the data cached in the browser of the access source terminal.

The data uploaded from the user terminal is image data, and the step of receiving the data is the step of letting the user select one of a plurality of three-dimensional models that modeled humans, and the user terminal uploaded Cutting out data of the human face portion from the image data, and presenting the synthesized image with the face portion of the already selected three-dimensional model to the user terminal. At this time, in the step of encrypting and storing, it is not necessary to encrypt the three-dimensional model, and only the cut out data is encrypted and stored as an encrypted file. In the encoding step, the site address (URL), the selected 3D model identifier, and the file name of the encrypted file are used as information for identifying the data, and these are used together with the decryption code to generate a 2D Create code. In the providing step, the image data of the 3D model and the image data of the face portion are separately provided to the access source, and the image data of the face portion is divided in a format that can be synthesized by the browser of the access source. It is desirable to provide it.

According to a second aspect of the present invention, the information processing apparatus includes one or more servers provided on an information network, and the one or more servers receive data uploaded from a user terminal connected via the information network. Means for encrypting and storing the received data, means for encoding information for identifying the stored data and a descrambling code for decrypting the data into a two-dimensional pattern, and Data distribution comprising: means for sending the obtained two-dimensional code to the user terminal; and means for decoding the corresponding data for access based on the two-dimensional code and providing it to the access source A system is provided.

According to the third aspect of the present invention, by installing on a server provided on the information network, the server receives means for receiving data uploaded from a user terminal connected via the information network. A means to encrypt and store data,
Means for encoding information for identifying stored data and a descrambling code for decrypting the data into a two-dimensional pattern, means for sending the two-dimensional code obtained by encoding to a user terminal, A computer program is provided that operates as a means for decrypting corresponding data and providing it to an access source for access based on a two-dimensional code.

According to the present invention, the user can manage the decryption code and can distribute data with high convenience.

It is a block block diagram which shows the data distribution system which concerns on embodiment of this invention. The operation | movement flowchart of the server shown in FIG. 1 is shown.

FIG. 1 is a block diagram showing a data distribution system according to an embodiment of the present invention. This data distribution system includes a server 2 provided on the Internet 1 as an information network. The server 2 receives the uploaded data from the user terminal 3 connected via the Internet 1, encrypts and stores the received data, and decrypts the information for identifying the stored data and the data And a descrambling code to be encoded into a two-dimensional pattern, and a service for sending the two-dimensional code obtained by the encoding to the user terminal 3 is provided. The server 2 is further configured to provide a service for decrypting corresponding data and providing it to the access source for access based on the two-dimensional code from the disclosure target person terminal 4 connected via the Internet 1. The These services are hereinafter referred to as “data distribution services”.

In this embodiment, the data distribution service is provided by one server 2, but a configuration in which a plurality of servers cooperate to provide the data distribution service is also possible. As the two-dimensional code, a matrix code, a stack code, or a bar code can be used. In particular,
It is desirable to use a QR code. The QR code is a kind of matrix code and can be used in many mobile phone terminals including smartphones.

Hereinafter, as a specific example, a configuration in which the present invention is implemented in a system that synthesizes and distributes a photograph image uploaded by a user into an existing three-dimensional model will be described.

FIG. 2 shows an operation flowchart in the case where a photographic image is synthesized and distributed by the server 2 shown in FIG.

When applying for a data distribution service from the browser running on the user terminal 3 to the server 2,
The server 2 displays a “Terms of Use Agreement” screen on the browser of the user terminal 3. When there is a reply from the user terminal 3 to the agreement on the terms of use, the server 2 starts the data distribution service shown in the flowchart of FIG.

First, as a step of receiving data uploaded from the user terminal 3 connected via the Internet 1, the server 2 selects a 3D model (step S1), accepts a photographic image (step S2), and a face part. Each step of clipping (step S3) and image composition (step S4) is executed.

That is, the server 2 displays a “3D model selection” screen on the browser of the user terminal 3 and causes the user to select one of a plurality of three-dimensional models that model humans (step S1). As the three-dimensional model, for example, a model imitating a human like a character called “avatar”, in particular, a human representing two or three heads can be used. When there is a 3D model selection response from the user terminal 3, the server 3 displays an “upload photo image” screen on the browser of the user terminal 3 and accepts the upload of the image data (step S2). When image data is uploaded from the user terminal 3,
The server 2 cuts out face part data from the uploaded image data (step S3), and presents the image synthesized with the face part of the three-dimensional model selected in step S1 to the user terminal (S4). The operation of step S4 will be described in detail. The server 2 sends the 3D model and the image of the face portion to the user terminal 3 together with information and a program for synthesizing them, and sends them to the browser of the user terminal 3. And display a composite image.

Although not shown in the figure, it is desirable that the server 2 displays the image synthesized in step S4 on the browser of the user terminal 3 and repeats steps S1 to S4 until user confirmation is obtained. For this purpose, the image data uploaded from the user is immediately saved as a temporary file, and the temporary file is immediately referred to, cut and encrypted, and managed by a cookie (HTTP Cookie). Save with a unique file name. The above temporary file is automatically deleted after the session ends. If image data is uploaded again from the client (user terminal 3) holding the cookie, the image data is stored using the same file name managed by the cookie, thereby reducing the load on the server. If the number of repetitions increases too much, the load on the server 2 is heavy. Therefore, it is desirable to limit the number of repetitions to a predetermined number.

The server 2 can also accept a simple message along with accepting upload of image data.

Subsequently, as a step of encrypting and storing the received data, the server 2 encrypts the data of the face part cut out in step S3 and stores it as an encrypted file (step S5). There is no need for encryption for the selected 3D model. If a message is accepted, it is encrypted along with the face data.

After storing the encrypted file, the server 2 encodes information for identifying the stored data and a descrambling code for decrypting the data into a two-dimensional pattern (step S).
6) The two-dimensional code obtained by encoding is sent to the user terminal 3 (step S7).
. Information for identification includes a site address (URL: Uniform Reso).
ur Locator), the identifier of the selected three-dimensional model, and the file name of the encrypted file, and using these together with the decryption code of the encrypted file, a two-dimensional code is created.

In such a service, storing the encrypted file stored in the server 2 indefinitely has no merit for the user and is not desirable from the viewpoint of data capacity. Therefore, it is desirable to limit the period of data disclosure. This period is notified to the user on the above “Agreement of Terms of Use” screen.

Until the publishing period elapses (No in step S8), when there is an access based on the two-dimensional code from the disclosure target person terminal 4 connected via the Internet 1 (step S9), the server 2 stores the corresponding data. Decrypt and provide to the access source (step S10). That is, the face data (encrypted file) is decrypted and provided to the disclosure target person terminal 4 that is the access source, together with the corresponding three-dimensional model image data. If the message is also encrypted, it is decrypted and provided.

When providing data to the disclosure target terminal 4, the image data of the face portion is in a format that can be synthesized by the browser of the disclosure target terminal 4 so that the original data cannot be easily extracted from the data cached in the browser. It is desirable to provide them separately. For example, the image is separated into two or more in the vertical and / or horizontal directions, and further, separated for each separated image by a color component (for example, RGBA) included in the pixel. The original image can be obtained by overlaying and synthesizing each image when displayed.

After the publishing period has elapsed (Yes in step S8), the server 2 deletes the encrypted file and its associated data (step S11).

In the above embodiment, the descrambling code is described only in the two-dimensional code, and the server 2
It is desirable not to leave it. If there is a two-dimensional code, a composite image (an image in which a face photograph is embedded in a three-dimensional model) can be obtained any number of times. However, only image data of the face portion cannot be obtained, and personal information leakage can be prevented.

The two-dimensional code can be distributed as data or printed.
It can also be printed on a sticker and affixed to business cards, postcards, and souvenirs, for example.

In the above description, the data distribution system of the present invention has been described based on the operation of the server 2. For this operation, the server 2 can be provided with, for example, a network interface as means for receiving data uploaded from a user connected via an information network. Further, the server 2 can include, for example, an encrypted application and a data storage device as means for encrypting and storing the received data. Further, the server 2 may be provided with, for example, a two-dimensional code creation application as means for encoding information for identifying stored data and a descrambling code for decrypting the data into a two-dimensional pattern. it can. Furthermore, the server 2 uses, for example, the above-described network interface as a means for sending the two-dimensional code obtained by encoding to the user terminal 3, and decrypts data corresponding to the access based on the two-dimensional code. For example, the above-described decryption function of the encrypted application and the above-described network interface can be used as means for providing the access source. Each means can be shared and executed by a plurality of servers.

The present invention is a means for receiving data uploaded from a user connected via an information network by installing the server on a server provided on an information network such as the server 2, and receiving the received data. Means for encrypting and storing; means for encoding information for identifying stored data and a descrambling code for decrypting the data into a two-dimensional pattern; and a two-dimensional code obtained by the encoding It can also be implemented as a computer program that operates as means for sending to the user and means for decrypting data corresponding to access based on a two-dimensional code and providing it to the access source. Such a computer program can be provided by being stored in a CD, a DVD, a Blu-ray disc (registered trademark), a memory card, a USB memory, or the like. It can also be provided via a communication line.

In the above description of the embodiment, it is assumed that an image obtained by synthesizing a photographic image on a three-dimensional model is distributed. It can also be used to distribute various data such as video data and audio data.

1 Internet 2 Server 3 User terminal 4 Target user terminal

Claims (5)

Executed by a server on the information network,
Receiving data uploaded from a user terminal connected via the information network;
Encrypting and storing the received data;
Encoding information for identifying stored data and a descrambling code for decrypting the data into a two-dimensional pattern;
Sending the two-dimensional code obtained by this encoding to the user terminal;
For access based on the two-dimensional code from a terminal connected via the information network, decoding corresponding data and providing it to the access source terminal;
A data distribution method comprising: 2. The data distribution method according to claim 1, wherein a matrix code in which small squares are two-dimensionally arranged is used as the two-dimensional code. The data distribution method according to claim 1 or 2,
The data uploaded from the user terminal is image data,
Receiving the data comprises:
Allowing the user to select one of a plurality of three-dimensional models that model humans;
Clipping the face portion data from the image data and presenting the image combined with the face portion of the three-dimensional model selected in the selecting step to the user terminal;
Including
In the step of encrypting and storing, the clipped data is encrypted and stored as an encrypted file,
In the encoding step, as the identification information, a site address,
Using the selected three-dimensional model identifier and the file name of the encrypted file, using these together with the decryption code to create a two-dimensional code,
In the providing step, the image data of the selected three-dimensional model and the image data of the face portion are provided to the access source, and the face portion image data is synthesized by the browser of the access source. Provide in a form that can be separated,
A data distribution method characterized by that. Comprising one or more servers provided on an information network;
This one or more servers
Means for receiving data uploaded from a user connected via the information network;
Means for encrypting and storing the received data;
Means for encoding information for identifying stored data and a descrambling code for decrypting the data into a two-dimensional pattern;
Means for sending the two-dimensional code obtained by this encoding to the user terminal;
Means for decrypting corresponding data for access based on the two-dimensional code and providing it to the access source;
A data distribution system comprising: Means for receiving data uploaded from a user connected via the information network by installing the server on a server provided on the information network; means for encrypting and storing the received data; Means for encoding information for identifying the generated data and a descrambling code for decrypting the data into a two-dimensional pattern, means for sending the two-dimensional code obtained by the encoding to the user, And a computer program that operates as means for decrypting data corresponding to access based on a two-dimensional code and providing it to an access source.

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