JP4944475B2 - E-mail attached image security system, method, program, terminal, and e-mail server - Google Patents

Description

  The present invention relates to a mail transmission system. In particular, the present invention relates to a mail attached image security system, method, program, terminal, and mail server for performing security of images attached to mail.

It is well known that security by copyright law works against unauthorized use of copyrighted images when sending e-mails from mobile phones.
However, when an image taken by a mobile phone user is attached to an e-mail and sent, copyright security does not work for the image attached to the e-mail, and a malicious third party alters the contents. There is a problem that misinformation flows by e-mail.

There are the following conventional techniques for such a mobile phone mail transmission and data security.
Conventionally, the image information of the e-mail including the image information transmitted to and received from the mobile communication terminal device, regardless of the difference in the standards regarding the communication method of the mobile communication terminal device and the service area of the telephone company of the mobile communication terminal device, Communication data management method for mobile communication terminal device capable of easily and reliably acquiring and managing incoming call information and / or incoming e-mail information transmitted to mobile communication terminal device, and communication of these mobile communication terminal devices In order to provide various devices and recording media necessary for executing the data management method, image information attached to or linked to the character information of the e-mail transmitted from the mobile communication terminal device Obtained from the e-mail, stored in a database device on the Internet, and access authorized persons including a sender / receiver of the e-mail can acquire the image information. Are those accessible to manage (for example, see Patent Document 1).

However, in the above-mentioned patent document 1, an authorized person including an e-mail sender / receiver manages the image information so that the image information can be accessed. However, a malicious third party alters the contents of the image attached to the e-mail and sends the e-mail. Deployment does not prevent misinformation from flowing.
Conventionally, when the biometric authentication process has failed, two levels of accuracy are provided. If the accuracy is less than the low accuracy, biometric authentication is performed again. If the accuracy is higher than the high accuracy, the biometric authentication is almost successful. With the purpose of confirming other registered attribute data, it is intended to perform customer authentication processing that is more convenient for customers and maintains high security at the same time. If the first accuracy is not satisfied, the first re-authentication step and the authentication step return to the step of receiving the fingerprint image data again while maintaining the establishment of the customer ID and password. If the extracted feature amount is higher than the first accuracy and less than the second accuracy, information regarding at least one of the data representing the customer attributes is included. Requires that the force, some comprising a second re-authentication process as a component (e.g., see Patent Document 2).

However, in Patent Document 2, customer authentication processing with high security is performed. As described above, a malicious third party falsifies the contents of an image attached to an e-mail and develops the e-mail. It does not prevent information from flowing.
Conventionally, the caller's profile data provided to the callee mobile terminal device is set to allow or disallow browsing or download of audio data, and any audio data is used instead of the ringback tone. In order to output data, a transmitting / receiving unit that transmits and receives data wirelessly, a display unit capable of displaying at least one of image information or character information, user profile data, and data of the user's communication partner are stored. A data storage unit; and a setting unit that sets permission or non-permission of browsing of the user's profile data for each data of the communication partner, wherein the transmission / reception unit includes the user's profile data and the browsing permission Alternatively, there is one that can transmit the data of the communication partner to which no permission is set to a server device (for example, a patent Document reference 3).

However, in Patent Document 3 above, permission or disapproval of the user's profile data is set for each data of the communication partner, but as described above, a malicious third party has the contents of the image attached to the mail. It is not intended to prevent misinformation from flowing by tampering with and e-mailing.
Conventionally, the server of the content usage management system provides a content usage management system in which the server controls the usage of content on the user terminal reliably and easily without imposing a burden on the user terminal. A user right information DB that stores right information regarding the right of use of content owned by a user who uses the user information, and generates LT, which is right information indicating a part of the right of use owned by the user, based on a request from the user And a content information generating unit to be transmitted to the user terminal. The user terminal has a communication unit that receives the LT transmitted from the server, and a license that controls the use of the content according to the usage authority indicated by the received LT. Some include an information processing unit (see, for example, Patent Document 4).

  However, in Patent Document 4, the use of content is controlled according to the received usage authority. As described above, a malicious third party alters the content of the image attached to the mail and expands the mail. This does not prevent misinformation from flowing.

JP 2004-318292 A JP 2004-318583 A JP 2004-282405 A JP 2002-342518 A

  Therefore, in view of the above-described problems, the present invention prevents an email-attached image security system from preventing erroneous information from flowing by developing a mail by altering the contents of an image attached to the mail. An object is to provide a method, a program, a terminal, and a mail server.

For the present invention to solve the above problems, in the mail attachment image security system for restricting the deployment of images e-mail attachments from a terminal via a mail server, an image reading right setting unit to the terminal, the image A storage right setting unit, an image transfer right setting unit, an image editing right setting unit, an image browsing permission unit, an image storage permission unit, an image transfer permission unit, and an image editing permission unit are provided. The image viewing right that allows only viewing of the image attached to the e-mail is set, and the image storage right setting unit sets the image saving right that allows only saving for the image attached to the e-mail as security, and the image As a security, the transfer right setting unit sets an image transfer right that allows only transfer to an image attached to an e-mail. The image editing right that allows only editing to the image attached to the mail as a security is set, and the image viewing permission section has the right to view the image as a security when receiving the mail with the image attached. In this case, only the right to view images is permitted, and restrictions are imposed on the expansion of the storage, transfer, and editing of other images, and the image storage permission unit provides security when receiving an email with an image attached. When saving rights are set for an image, only image saving is permitted, and restrictions are placed on the development of transfer, editing, and browsing of other images. The image transfer permission unit is an email attached with an image. When transfer rights are set for an image as security, only image transfer is permitted, and development for editing, viewing, and saving other images is permitted. When the image editing permission unit receives an email with an image attached, and the editing right is set for the image as security, the image editing permission unit permits only image editing, viewing other images, Restricting the development for storage and transfer, the mail server is provided with an image security storage unit and an image information transmission determination unit, and the image security storage unit receives and receives the sender of the mail to be delivered received from the terminal. The type of viewing rights, saving rights, transfer rights, and editing rights set for the image as well as the user, text, and attached images are saved. If security is not set for the image, no security information is saved. The image information transmission determination unit notifies the terminal of the mail recipient stored in the image security storage unit of the mail reception. In response to an image display request from the recipient's terminal, if the image security storage unit stores any type of viewing right, storage right, transfer right, and editing right, the attached image is transmitted. Provided is a mail attached image security system characterized in that, when no security information is stored, it is determined that an attached image is not transmitted .

Et al is set, the image reading right setting unit, the image storage right setting unit, the image transfer right setting unit and the image editing right setting unit, reading right as a security, storage rights, transfer rights, independently editing rights In addition, browsing rights, storage rights; browsing rights, transfer rights; browsing rights, editing rights; saving rights, transfer rights; saving rights, editing rights; forwarding rights, editing rights; browsing rights, saving rights, forwarding rights; browsing Right, transfer right, edit right; browse right, save right, edit right; save right, transfer right, edit right, and so on.

Further, when the image information transmission determination unit determines that an image is not transmitted to a destination terminal for a mail whose security is not stored in the image security storage unit, the image information transmission determination unit transmits the image information to the transmission source terminal. Send a disapproval notice.
Further, the image information transmission determination unit transmits a message to the transmission source terminal so as to set security when transmitting the image information transmission impossibility notification.

Further, the image browsing right setting unit, the image storage right setting unit, the image transfer right setting unit, and the image editing right setting unit set security for the mail text in addition to the image.
Furthermore, the present invention provides an image browsing method that allows only browsing of an image attached to a mail as security in a mail attached image security method for restricting expansion of an image transmitted by attaching to a mail from a terminal via a mail server. Setting the right to the terminal, setting the image storage right to allow only the image attached to the e-mail as security, and transferring the image to the image attached to the e-mail as security Setting the right to the terminal,
As a security, when an image editing right that allows only editing of an image attached to an e-mail is set on the terminal, and when an e-mail attached with an image is received by the terminal, the viewing right is set for the image as a security. In some cases, only the right to view images is allowed, and the process of restricting the expansion of other images for storage, transfer, and editing, and when an e-mail attached with an image is received by the terminal, the image is used as security. When saving rights are set, only saving of images is allowed, and the process of restricting the development for transfer, editing, and browsing of other images, and when a mail with an attached image is received at the terminal In addition, when the transfer right is set for the image as security, only the transfer of the image is permitted, and the development for editing, browsing, and saving other images is restricted. When an email with an image attached is received at the terminal, if editing rights are set for the image as security, only image editing is permitted, and other images can be viewed, saved, and transferred And the right to view, save, transfer, and edit rights set for the image as well as the sender, recipient, text, and attached image of the mail to be delivered received from the terminal to the mail server. If no security is set for the image, the process of saving no security information and the mail reception notification to the mail recipient's terminal saved on the mail server Any type of viewing, saving, forwarding, and editing rights is stored in the mail server as security for image display requests from the terminal. If that is determined to send the attached image, it provides a mail attachment image security method characterized by if no security information is stored and a step of determining not to transmit the attached image.

Furthermore, the present invention provides a program for executing email attached image security for restricting the expansion of an image sent as an attachment to a mail from a terminal via a mail server, and browsing an image attached to the email as security. The procedure to set the image viewing right that allows only the device to be set on the terminal, the procedure to set the image saving right to allow only the image attached to the email as security, and the transfer to the image attached to the email as security The procedure to set the image transfer right to allow only the device, the procedure to set the image editing right to allow only editing for the image attached to the email as security, and the email with the image attached received by the device If viewing rights are set for the image as security, When the terminal receives a mail with an attached image and a procedure that allows only viewing rights and restricts the expansion of saving, transferring, and editing other images, and the image is attached, the image storage rights are set as security. If you have received a mail attached with an image on your device, you can only save the image and restrict the transfer, editing, and browsing of other images. If the transfer right is set for, only transfer of images is allowed, and the procedure for restricting the expansion of editing, viewing, and saving of other images, and emails with attached images received on the terminal If editing rights are set for the image as security, only editing of the image is permitted, and the procedure for restricting the expansion of browsing, saving, and transfer of other images, and the mail from the terminal. Along with the sender, recipient, body text, and attached image of the mail to be delivered received to the server, the types of viewing rights, storage rights, transfer rights, and editing rights set for the image are saved as security, and the image has security. If it is not set, the procedure to save the non-security information and the mail reception notification to the mail recipient's terminal stored in the mail server, and the mail in response to the image display request from the recipient's terminal It is determined that the attached image is to be sent if any of the browsing right, saving right, transfer right, and editing right is saved as security on the server, and the attached image is selected if no security information is saved. program for executing the mail attachment image security, characterized in that it comprises a step of determining not to transmit the computer I will provide a.

Furthermore, the present invention provides an image browsing right setting unit, an image storage right setting unit, an image transfer right setting unit, and an image editing right setting unit in a terminal that restricts the expansion of an image transmitted as an attachment to a mail via a mail server. In addition, an image browsing permission unit, an image storage permission unit, an image transfer permission unit, and an image editing permission unit are provided, and the image browsing right setting unit is an image browsing right that allows only browsing of an image attached to an email as security. The image storage right setting unit sets an image storage right that permits only saving of an image attached to an e-mail as security, and the image transfer right setting unit transfers the image attached to an e-mail as security. The image editing right setting unit accepts only the editing of images attached to e-mail as security. When the image viewing permission unit receives an email with an image attached, and the viewing right is set for the image as security, only the image viewing right is permitted. Restricts the development for saving, transferring, and editing, and when the image saving permission unit receives an email with an image attached, if the saving right is set for the image as security, the image saving permission unit only saves the image. The image transfer permission unit sets the transfer right to the image as security when it receives an email with an image attached. If it is, only transfer of the image is permitted, and the editing, browsing and saving of other images are restricted, and the image editing permission unit receives an email attached with the image. When security is set for an image as security, only image editing is permitted, other images can be viewed, stored and transferred, and the received mail is delivered from the terminal to the mail server. When the sender, recipient, body text, and attached image of the mail to be saved are saved together with the types of viewing rights, storage rights, transfer rights, and editing rights set for the image, and the security is not set for the image Saves non-security information, notifies the mail recipient's terminal stored in the mail server of the mail reception notification from the mail server, and provides security to the mail server for image display requests from the recipient's terminal. Send email with attached image if any of viewing rights, saving rights, transfer rights, and editing rights is saved Provided is a terminal characterized in that a mail server determines that an attached image is not transmitted when no security information is stored .

Further, the present invention provides a mail server that restricts the expansion of an image transmitted as an attachment to an e-mail from a terminal, and sets and saves an image viewing right that allows only viewing of the image attached to the e-mail as security. Set the image storage right to allow only, set the image transfer right to allow only transfer, and set the image editing right to allow only editing. Sender, recipient, text, and attached image of mail to be delivered received from the terminal Along with this, an image security storage unit that stores the type of viewing right, storage right, transfer right, and editing right set as security, and stores no security information when security is not set for the image, The recipient of the email stored in the image security storage unit is notified of the receipt of the email and the image from the recipient's terminal is sent. In response to a display request, if any one of viewing rights, saving rights, transfer rights, and editing rights is saved as security in the image security saving unit, it is determined that an attached image is to be sent, and no security information is saved. An image information transmission determining unit that determines that the attached image is not transmitted when the terminal is attached, and when the terminal receives the attached mail, the image is displayed when the right to view is set as security. Allow the terminal to have only the right to view images, restrict other images from being saved, transferred, and edited, and if the right to save images is set as security, only save images to the terminal. If permission is set, restrictions are placed on the transfer, editing, and browsing of other images, and the transfer right is set for the image as security Allows the terminal to transfer images only, restricts the development of editing, viewing, and saving other images, and if editing rights are set for the image as security, only editing the image to the terminal Provided is a mail server characterized by allowing permission and restricting development for browsing, storing, and transferring other images .

  As described above, according to the present invention, when an image is attached to a mail from a transmission source terminal and the image is transmitted, security is set for the image, and is set when a mail is received from the transmission source terminal by a mail server. Saves the security for the selected image, determines that the image will be sent to the destination device for emails with security saved, and does not send the image to the destination device for emails without security If it is determined that the image is to be transmitted, the security is transmitted from the mail server to the destination terminal together with the image to be transmitted, and the destination terminal develops the image according to the security for the image transmitted from the mail server. So that the caller can display the image to the receiver according to the security of the image. Since so as to limit the free expansion of a malicious third party to tamper with the contents, it has become possible to prevent the flow of the misinformation by deploying mail. Furthermore, when the sender does not set security for the image for the receiver, the image cannot be sent to the receiver, and the image cannot be developed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a configuration diagram showing an outline of a mail attached image security system according to the present invention. As shown in the figure, the mail attached image security system 100 includes a mail server 101 and a plurality of portable terminals 102-1, 102-2, 102-3, 102-4,... And is controlled by a program executed on a computer. Is done.

The mail server 101 delivers mails of a plurality of mobile terminals 102-1, 102-2, 102-3, 102-4,..., And a plurality of mobile terminals 102-1, 102-2, 102-3, 102- Each of 4,... Has functions for browsing, storing, transferring, and editing images attached to e-mails.
As an example, the mobile terminal 102-1 of the caller A1, the mobile terminal 102-2 of the caller An1, to the mobile terminal 102-3 of the receiver B1, the mobile terminal 104 of the receiver Bn1, as an example. Assume that an email is sent to each.

As an example, each of the portable terminals 102-1, 102-3, 102-4,... Is provided with an image security setting unit 201 and an image development permission unit 202, and the portable terminal 102-2 has an image security setting unit 201, an image. It is assumed that the development permission unit 202 is not provided.
The image security setting unit 201 has a function of setting the security of an image to be attached when mail is transmitted from the mobile terminal 102-1 of the caller A1.

The image development permission unit 202 has a function of permitting the development of an image attached when the mobile terminal 102-3 of the recipient B1 receives the mail according to the security setting.
The mail server 101 is provided with an image security storage unit 301 and an image information transmission determination unit 302.
The image security storage unit 301 stores the security set for the image corresponding to the image attached to the mail received from the mobile terminal 102-1 of the caller A1.

The image information transmission determination unit 302 determines to transmit an image for a security mail stored in the image security storage unit 301, and an image for a mail whose security is not stored in the image security storage unit 301. Is determined not to be sent.
Note that when the image information transmission determination unit 302 determines that the image information transmission determination unit 302 transmits the image, the mail server 101 transmits security together with the image to the portable terminal 102-3 of the recipient B1.

2 is a block diagram illustrating a schematic configuration of the image security setting unit 201 and the image development permission unit 202 of the mobile terminals 102-1, 102-3, 102-4,... In FIG.
As shown in FIG. 5A, the image security setting unit 201 includes an image browsing right setting unit 201A, an image storage right setting unit 201B, an image transfer right setting unit 201C, and an image editing right setting unit 201D.

When the image browsing right setting unit 201A attaches an image picked up with the mobile terminal 102-1 of the caller A1 and selected to the acquired image to the mail, the image browsing right setting unit 201A sets the mobile terminal 102-3 of the receiver B1. It has a function of setting an image viewing right that allows only viewing of an image attached to a mail to be sent.
The image storage right setting unit 201B captures the image selected by the mobile terminal 102-1 of the caller A1 and attaches the selected image to the mail to the mobile terminal 102-3 of the receiver B1. It has a function of setting an image saving right that allows only saving of an image attached to a mail to be sent.

The image transfer right setting unit 201C captures the image selected by the mobile terminal 102-1 of the caller A1 and attaches the selected image to the mail to the mobile terminal 102-3 of the receiver B1. It has a function of setting an image transfer right that permits only other terminals to transfer an image attached to a mail to be sent.
The image editing right setting unit 201D captures the image selected by the mobile terminal 102-1 of the caller A1 and attaches the selected image to the mail to the mobile terminal 102-3 of the receiver B1. It has a function of setting an image editing right that allows only editing of an image attached to a mail to be sent.

As shown in FIG. 4B, the image development permission unit 202 includes an image browsing permission unit 202A, an image storage permission unit 202B, an image transfer permission unit 202C, and an image editing permission unit 202D.
When the image viewing permission unit 202A receives an email with an image attached to the mobile terminal 102-3 of the recipient B1, if the viewing right is set for the image, the image viewing permission unit 202A permits only image viewing. It has a function to limit development for saving, transferring and editing other images.

When the image storage permission unit 202B receives a mail with an image attached to the mobile terminal 102-3 of the receiver B1, and the storage right is set for the image, the image storage permission unit 202B permits only the image storage, It has a function to restrict other browsing, transfer, and expansion for browsing.
The image transfer permission unit 202C, when receiving a mail with an image attached to the mobile terminal 102-3 of the recipient B1, permits transfer of the image only when the transfer right is set for the image. It has a function to limit development for other browsing, saving, and editing.

When the image editing permission unit 202D receives an email with an image attached to the mobile terminal 102-3 of the recipient B1, and the editing right is set for the image, the image editing permission unit 202D permits only image editing. It has a function to limit development for other browsing, saving, and editing.
FIG. 3 is a diagram showing an example of a schematic content stored in the image security storage unit 301 of the mail server 101 in FIG.

  As shown in this figure, the image security storage unit 301 of the mail server 101 stores security corresponding to the sender, recipient, text, and attached image of the mail to be delivered, and sets security for the attached image. If it is set, the type of viewing right, saving right, transfer right, and editing right is saved, and if no security is set, no security information is saved.

FIG. 4 is a flowchart for explaining an operation example of the mail attached image security system in FIG.
As shown in the figure, in step S321, the mobile terminal 102-1 of the caller A1 selects an image to be transmitted by being attached to a mail, and sets the security of the selected image.

In step S322, after the security is set for the selected image from the portable terminal 102-1 of the caller A1, the image is attached to the mail, and the mail is transmitted.
In step S323, the mobile terminal 102-1 of the caller A1 receives the image information transmission notification and ends the process.
In step S324, the mobile terminal 102-2 of the caller An1 selects an image to be transmitted by being attached to the mail.

In step S325, the selected image is attached to the mail from the portable terminal 102-2 of the caller An1, and the mail is transmitted.
In step S326, the mobile terminal 102-2 of the caller An1 receives the image information transmission addition notification and ends the process.
In step S327, the image security storage unit 301 of the mail server 101 confirms the security setting of the transmission image for the mail from the mobile terminal 102-1 of the caller A1, the mobile terminal 102-2 of the caller An1,. To do.

In step S328, when security is set for the transmission image, the security information is stored in the image security storage unit 301.
In step S329, a mail notification is sent to the mobile terminal 102-3 of the recipient B1.
In step S330, if security is not set for the transmission image, a mail notification is sent to the mobile terminal 102-4 of the recipient Bn1.

In step S331, the mail server 101 receives an image display request from the mobile terminal 102-3 of the receiver B1, the mobile terminal 102-4 of the receiver Bn1,.
In step S <b> 332, the image information transmission determination unit 302 of the mail server 101 determines whether or not image information can be transmitted based on the security information stored in the image security storage unit 301 in response to the image display request.

If it is determined in step S333 that image information can be transmitted to the mobile terminal 102-1 of the sender whose security is stored in the image security storage unit 301, the mobile terminal 102-3 of the receiver B1 Image information is sent with e-mail.
In step S334, a notification that the image information has been transmitted is sent to the mobile terminal 102-1 of the caller A1, and the process ends.

  If it is determined in step S335 that image information cannot be transmitted to the mobile terminal 102-2 of the sender An1 whose security is not stored in the image security storage unit 301, the mobile terminal 102-4 of the receiver Bn1 The image information is not transmitted together with the e-mail, and a notification that the image information cannot be transmitted is sent to the mobile terminal 102-2 of the caller An1, and the processing is ended.

In step S336, the portable terminal 102-3 of the recipient B1 receives a mail notification from the mail server 101.
In step S337, the portable terminal 102-3 of the recipient B1 makes an image display request to the mail server 101.
In step S338, the portable terminal 102-3 of the recipient Bn1 receives the image together with the mail from the mail server 101.

In step S339, the portable terminal 102-3 of the recipient B1 can expand the image in accordance with security, and the browsing, storage, transfer, and editing are restricted, and the process ends.
In step S340, the portable terminal 102-4 of the recipient Bn1 receives a mail notification from the mail server 101.

In step S341, the receiver Bn1's portable terminal 102-4 makes an image display request to the mail server 101.
In step S342, since the mobile terminal 102-4 of the receiver Bn1 receives the notification that the image information cannot be transmitted together with the mail from the mail server 101 and cannot receive the image, the mobile terminal 102-2 of the sender An1 performs security. Viewing, saving, transferring, and editing cannot be performed on images for which no is set. The process ends.

FIG. 5 is a flowchart illustrating an example of the security setting in step S321 in FIG. 4 as the operation of the image security setting unit 201 in FIG.
As shown in this figure, in step S301, the image security setting unit 201 of the portable terminal 102-1 determines whether or not the viewing right is set by the image browsing right setting unit 201A.

In step S302, when the viewing right is set by the image viewing right setting unit 201A, the viewing right is set for the image to be attached, and the process ends.
If the viewing right is not set in step S303, the image security setting unit 201 determines whether or not the saving right is set by the image saving right setting unit 201B.
If the storage right is set by the image storage right setting unit 201B in step S304, the storage right is set for the attached image, and the process ends.

If the storage right is not set in step S305, the image security setting unit 201 determines whether the transfer right is set by the image transfer right setting unit 201C.
If the transfer right is set by the image transfer right setting unit 201C in step S306, the transfer right is set for the image to be attached, and the process ends.
If the transfer right is not set in step S307, the image editing right setting unit 201D sets the editing right.

In step S308, an editing right is set for the attached image, and the process ends.
FIG. 6 is a flowchart for explaining an image development example corresponding to the security in step S339 in FIG. 4 as an operation example of the image development permission unit 202 in FIG.
As shown in this figure, in step S311, the image development permission unit 202 of the mobile terminal 102-3 determines whether or not the viewing right is set for the image received by the image browsing permission unit 202A.

In step S312, if it is determined by the image browsing permission unit 202A that the browsing right is set, the image browsing display is permitted, the image browsing display can be expanded, and the process ends.
If the viewing right is not set in step S313, the image development permission unit 202 determines whether or not the saving right is set for the image received by the image saving permission unit 202B.

If it is determined in step S314 that the image viewing permission unit 202A has set the storage right, the image storage is permitted, the image storage can be expanded, and the process ends.
If the storage right is not set in step S315, the image development permission unit 202 determines whether the transfer right is set for the image received by the image storage permission unit 202B.

In step S316, if it is determined by the image browsing permission unit 202A that the transfer right is set, the image transfer is permitted, the image transfer can be expanded, and the process ends.
If the transfer right is not set in step S317, the image development permission unit 202 determines that the edit right is set for the received image.

In step S318, image editing is permitted by the image storage permission unit 202B, image development can be expanded, and the process ends.
Therefore, according to the present invention, in a mail attached with image information, the sender gives the recipient the right to view, save, transfer, and edit as the security for the image, and freely expand the image. In other words, if the sender does not give the recipient the right to view, save, transfer, or edit as security, the image cannot be freely expanded. It has become possible to prevent misinformation from flowing by a malicious third party falsifying the contents and expanding the mail.
When the sender does not set security for the image for the receiver, the image cannot be sent to the receiver, and the image cannot be developed.
When the sender does not set security for the image for the receiver, the image cannot be sent to the receiver, and the image cannot be developed. When the sender does not set security for the image for the receiver, the image cannot be sent to the receiver, and the image cannot be developed.

In the above description, as the security, the viewing right, the storage right, the transfer right, and the editing right are set independently, but they may be set in combination as follows. As a result, it is possible to adjust the degree of freedom of image expansion that is restricted on the receiving side.
FIGS. 7 and 8 are modified examples of FIG. 5 and are flowcharts for explaining an example of security setting in step S321 in FIG. 4 as the operation of the image security setting unit 201 in FIG.

As shown in this figure, compared with FIG. 5, the setting of the viewing right in step S363, the setting of the storage right in step S374, the setting of the transfer right in step S378, and the setting of the editing right in step S379 are independent settings. Same as above.
On the other hand, step S366 is a setting of browsing rights and storage rights, step S360 is a setting of browsing rights and transfer rights, step S362 is a setting of browsing rights and editing rights, and step S371 is a saving right, The transfer right is set, step S373 is a save right and edit right, and step S377 is a transfer right and edit right.

Further, step S365 is setting of viewing rights, storage rights, and editing rights, step S359 is setting of viewing rights, transfer rights, and editing rights, and step S356 is setting of viewing rights, saving rights, and transfer rights, Step S370 is for setting a storage right, a transfer right, and an editing right.
Further, step S355 is for setting a viewing right, a saving right, a transfer right, and an editing right.
The operation example of the image development permission unit 202 in FIG. 2 is the same as that in FIG.

FIG. 9 is a modified example of FIG. 3, and is a diagram showing an example of a schematic content stored in the image security storage unit 301 of the mail server 101 in FIG.
As shown in this figure, in comparison with FIG. 3, the image security storage unit 301 of the mail server 101 has, as security, a viewing right, a storage right, in addition to a single viewing right, a storage right, a transfer right, and an editing right; Browsing rights, Transfer rights; Browsing rights, Editing rights; Storage rights, Transfer rights; Storage rights, Editing rights; Transfer rights, Editing rights; Browsing rights, Saving rights, Transfer rights; Browsing rights, Transfer rights, Editing rights; Browsing rights , Save right, edit right; save right, transfer right, edit right; view right, save right, transfer right, edit right are saved.

  If it is determined in step S335 in FIG. 4 that image information cannot be transmitted to the mobile terminal 102-2 of the caller An1 whose security is not stored in the image security storage unit 301, the mobile terminal of the caller An1 102-2 is notified that the image information cannot be transmitted. If the security setting is simply forgotten, a message is sent to the mobile terminal 102-2 of the caller An1 to set the security. You may send it.

  Note that when the mobile terminal 102-2 of the caller An1 does not have the function of the present invention, the mail server 101 stores a program for setting security, and the mail server 101 sends the caller An1. You may enable it to download the program of this invention to the portable terminal 102-2.

In the above description, security is set for an image attached to an e-mail. However, it is possible to set security not only for an image but also for data attached in general.
Furthermore, it is possible to similarly set security for the mail text.

  In the above description, the security is set for the attached image of the mail between the mobile terminals. The present invention can also be used for other web mails.

It is a block diagram which shows the outline of the mail attachment image security system which concerns on this invention. 2 is a block diagram illustrating a schematic configuration of an image security setting unit 201 and an image development permission unit 202 of the mobile terminals 102-1, 102-3, 102-4,... In FIG. FIG. 2 is a diagram illustrating an example of a schematic content stored in an image security storage unit 301 of the mail server 101 in FIG. 1. 3 is a flowchart for explaining an operation example of the email attached image security system in FIG. 1. 5 is a flowchart for explaining an example of security setting in step S321 in FIG. 4 as the operation of the image security setting unit 201 in FIG. FIG. 5 is a flowchart for explaining an example of image development in accordance with security in step S339 in FIG. 4 as an operation example of the image development permission unit 202 in FIG. FIG. 6 is a flow chart for explaining a security setting example of step S321 in FIG. 4 as an operation of the image security setting unit 201 in FIG. FIG. 6 is a flow chart for explaining a security setting example of step S321 in FIG. 4 as an operation of the image security setting unit 201 in FIG. FIG. 4 is a modification example of FIG. 3, and is a diagram illustrating a schematic content example stored in an image security storage unit 301 of the mail server 101 in FIG. 1.

Explanation of symbols

100: Mail attached image security system 101: Mail server 101
102-1, 102-2, 102-3, 102-4 ... portable terminal 201 ... image security setting unit 201A ... image browsing right setting unit 201B ... image storage right setting unit 201C ... image transfer right setting unit 201D ... image editing right Setting section 202 ... Image development permission section 202A ... Image browsing permission section 202B ... Image storage permission section 202C ... Image transfer permission section 202D ... Image editing permission section 301 ... Image security storage section 302 ... Image information transmission judgment section

Claims (9)

In the email attachment image security system that restricts the expansion of images sent by attaching to emails from terminals via a mail server ,
The terminal includes an image browsing right setting unit, an image storage right setting unit, an image transfer right setting unit, an image editing right setting unit, and an image browsing permission unit, an image storage permission unit, an image transfer permission unit, and an image editing permission unit. And
The image browsing right setting unit sets an image browsing right that allows only browsing of an image attached to an email as security,
The image storage right setting unit sets an image storage right that permits only storage for an image attached to an email as security,
The image transfer right setting unit sets an image transfer right that permits only transfer for an image attached to an email as security,
The image editing right setting unit sets an image editing right that permits only editing of an image attached to an email as security,
When the image viewing permission unit receives an email with an image attached, if the viewing right is set for the image as a security, the image viewing permission unit permits only the viewing right of the image, and saves, transfers, and edits other images. Limits the deployment to
When the image storage permission unit receives an email with an image attached, and the right to save the image is set as security, the image storage permission unit only allows the image to be stored, and transfers, edits, and browses other images. Restrict deployment,
When the image transfer permission unit receives an e-mail attached with an image and the transfer right is set for the image as security, the image transfer permission unit only allows the transfer of the image, and edits, views, and saves other images. Restrict deployment,
When the image editing permission unit receives an email with an image attached, and the editing right is set for the image as security, the image editing permission unit only allows the image editing, and allows other images to be viewed, stored, and transferred. Restrict deployment,
The mail server includes an image security storage unit and an image information transmission determination unit,
The image security storage unit stores the sender, recipient, text, and attached image of the mail to be delivered received from the terminal, as well as the types of viewing rights, storage rights, transfer rights, and editing rights set for the image as security. If no security is set for the image, save the no security information,
The image information transmission determination unit notifies the recipient of the email stored in the image security storage unit of the reception of the email, and in response to an image display request from the recipient terminal, the image security storage unit It is determined that the attached image will be transmitted if any of the viewing right, the saving right, the transfer right, and the editing right is stored, and if the non-security information is stored, the attached image should not be transmitted. A mail attached image security system characterized by judging . The image browsing right setting unit, the image storage right setting unit, the image transfer right setting unit, and the image editing right setting unit independently set a browsing right, a storage right, a transfer right, and an editing right as security. Browsing rights, saving rights; browsing rights, transfer rights; browsing rights, editing rights; saving rights, transfer rights; saving rights, editing rights; forwarding rights, editing rights; browsing rights, saving rights, transfer rights; browsing rights, forwarding rights The mail attachment image security system according to claim 1 , wherein a combination of an editing right; a viewing right, a saving right, an editing right; a saving right, a transfer right, and an editing right is set. If the image information transmission determination unit determines that an image is not transmitted to the transmission destination terminal in response to an email whose security is not stored in the image security storage unit, the image information transmission prohibition notification is sent to the transmission source terminal. The mail attached image security system according to claim 1, wherein: 2. The mail attached image security system according to claim 1, wherein the image information transmission determination unit transmits a message to the transmission source terminal so that security is set when an image information transmission impossible notification is transmitted. The image browsing right setting unit, the image storage right setting unit, the image transfer right setting unit, and the image editing right setting unit set security not only for the image but also for a mail text. The email attached image security system according to claim 1. In the email attached image security method that restricts the expansion of images sent by attaching to emails from terminals via a mail server ,
For security, set the image viewing right on the terminal to allow viewing only for images attached to emails,
For security, set the image storage right on the terminal to allow only storage for images attached to emails,
For security, set the image transfer right on the terminal to allow transfer only for images attached to emails,
For security, set the image editing right on the terminal that only allows editing of images attached to emails,
When a mail with an image attached is received by the terminal, if the viewing right is set for the image as security, only the image viewing right is permitted, and other images can be saved, transferred, and expanded for editing. The process of limiting
When a mail with an image attached is received by the terminal, if the right to save the image is set as security, only the image is allowed to be saved, and other images can be transferred, edited, and expanded for viewing. A process of restricting;
When a mail with an image attached is received by the terminal, if the transfer right is set for the image as security, only transfer of the image is permitted, and development for editing, viewing, and saving other images is permitted. A process of restricting;
When an e-mail with an image attached is received by the terminal, if editing rights are set for the image as security, only image editing is permitted, and other images can be viewed, stored, and expanded for transfer A process of restricting;
The sender, recipient, text, and attached image of the mail to be delivered from the terminal to the mail server, as well as the types of viewing rights, storage rights, transfer rights, and editing rights set for the image as security are saved. If no security is set in the process of storing no security information,
Notify the recipient of the email stored in the mail server that the email has been received, and in response to an image display request from the recipient's device, the email server will have security for viewing, saving, forwarding, and editing rights. An e-mail attachment comprising: a step of determining that an attached image is to be transmitted when any of the types is stored, and a step of determining not to transmit the attached image when non-security information is stored. Image security method. In a program that executes email attached image security that restricts the expansion of images sent by attaching to emails from terminals via a mail server ,
For security, set up image viewing rights on the device that only allow viewing of images attached to emails,
As a security, the procedure to set the image storage right to allow only the storage to the image attached to the email on the terminal,
For security, set up image transfer rights on the device that allow only transfer of images attached to emails,
For security, set up image editing rights on the device that only allow editing of images attached to emails,
When a mail with an image attached is received by the terminal, if the viewing right is set for the image as security, only the image viewing right is permitted, and other images can be saved, transferred, and expanded for editing. The steps to limit
When a mail with an image attached is received by the terminal, if the right to save the image is set as security, only the image is allowed to be saved, and other images can be transferred, edited, and expanded for viewing. The steps to limit,
When a mail with an image attached is received by the terminal, if the transfer right is set for the image as security, only transfer of the image is permitted, and development for editing, viewing, and saving other images is permitted. The steps to limit,
When an e-mail with an image attached is received by the terminal, if editing rights are set for the image as security, only image editing is permitted, and other images can be viewed, stored, and expanded for transfer The steps to limit,
The sender, recipient, text, and attached image of the mail to be delivered from the terminal to the mail server, as well as the types of viewing rights, storage rights, transfer rights, and editing rights set for the image as security are saved. If security is not set for the
Notify the recipient of the email stored in the mail server that the email has been received, and in response to an image display request from the recipient's device, the email server will have security for viewing, saving, forwarding, and editing rights. A mail attachment comprising: a procedure for determining that an attached image is to be transmitted when any type is stored, and a step for determining not to transmit an attached image when non-security information is stored. A program that executes image security on a computer. On a device that restricts the expansion of images sent as email attachments via a mail server ,
An image browsing right setting unit, an image storage right setting unit, an image transfer right setting unit and an image editing right setting unit, and an image browsing permission unit, an image storage permission unit, an image transfer permission unit, and an image editing permission unit are provided.
The image browsing right setting unit sets an image browsing right that allows only browsing of an image attached to an email as security,
The image storage right setting unit sets an image storage right that permits only storage for an image attached to an email as security,
The image transfer right setting unit sets an image transfer right that permits only transfer for an image attached to an email as security,
The image editing right setting unit sets an image editing right that permits only editing of an image attached to an email as security,
When the image viewing permission unit receives an email with an image attached, if the viewing right is set for the image as a security, the image viewing permission unit permits only the viewing right of the image, and saves, transfers, and edits other images. Limits the deployment to
When the image storage permission unit receives an email with an image attached, and the right to save the image is set as security, the image storage permission unit only allows the image to be stored, and transfers, edits, and browses other images. Restrict deployment,
When the image transfer permission unit receives an e-mail attached with an image and the transfer right is set for the image as security, the image transfer permission unit only allows the transfer of the image, and edits, views, and saves other images. Restrict deployment,
When the image editing permission unit receives an email with an image attached, and the editing right is set for the image as security, the image editing permission unit only allows the image editing, and allows other images to be viewed, stored, and transferred. Restrict deployment,
Along with the sender, recipient, body, and attached image of the mail to be delivered received from the terminal to the mail server, the type of browsing right, storage right, transfer right, and editing right set for the image as security is saved. If security is not set in the
The recipient of the email stored in the mail server is notified of the receipt of the email from the email server, and in response to an image display request from the recipient's device, the email server has the right to view, save, and transfer And if the type of editing right is saved, let the mail server determine that the attached image is sent, and let the mail server decide not to send the attached image if no security information is saved. A terminal characterized by . In a mail server that restricts the expansion of images sent as attachments to emails from devices ,
For images attached to e-mail, as security, set the image viewing right that only allows viewing, set the image saving right that only allows saving, set the image transfer right that only allows forwarding, and only allow editing The sender, recipient, body text, and attached image of the mail to be delivered received from the terminal for which the edit right is set, and the type of the view right, the save right, the transfer right, and the edit right set as the security are saved. An image security storage unit that stores no security information if security is not set for the image,
A notice of mail reception is sent to the terminal of the mail recipient stored in the image security storage unit, and in response to an image display request from the receiver terminal, the image security storage unit has a viewing right, a storage right, An image information transmission determination unit that determines that an attached image is to be transmitted if any type of transfer right or editing right is stored, and that determines that an attached image is not to be transmitted if no security information is stored And
If the terminal has received an email with an attachment, and the viewing rights are set for the image as security, only allow the terminal to view the image, and to expand the image for saving, transferring, and editing other images. If the right to save an image is set as security, the terminal is allowed to save only the image, and restrictions are placed on the transfer, editing, and browsing of other images. If the transfer right is set for the image, the terminal is allowed to transfer only the image, restricts the editing of other images for editing, viewing, and saving, and the edit right is set for the image as security. A mail server that allows a terminal to permit only image editing when it is set, and restricts the expansion of browsing, storing, and transferring other images .

Images