JP2010212828A - Program, wrong transmission prevention system, and transmission management method for electronic mail - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To avoid that a recipient of an electronic mail of a mistaken destination reads the electronic mail, even if a sender has transmitted the electronic mail to the recipient. <P>SOLUTION: A computer is used as a management device 3. A program 15 functions the computer as an electronic mail receiver 20, an encrypted information memory 23, an electronic mail transmitter 24, an identification information confirmation unit 25, a transmission permission/non-permission confirmation unit 26, and a password transmitter 27. The electronic mail receiver 20 receives an electronic mail transmitted by a sender. The encrypted information memory 23 memorizes a password. The electronic mail transmitter 24 transmits the electronic mail received by the electronic mail receiver 20 to a recipient. As for a reception terminal 2B, the identification information confirmation unit 25 checks identification information for identifying the recipient. The transmission permission/non-permission confirmation unit 26 checks the sender whether he/she permits transmission of the password towards the recipient identified by the identification information or not. In case of the permission by the sender, the password transmitter 27 transmits the password memorized by the encrypted information memory 23 towards the recipient identified by the identification information. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a program for managing e-mail transmission, an erroneous transmission prevention system, and an e-mail transmission management method.

  Patent Document 1 below discloses an electronic mail system that encrypts and transmits an attached file of an electronic mail. When the attached file encryption apparatus receives an electronic mail from the transmission side terminal device, the attached file encryption apparatus encrypts the attached file included in the electronic mail. Then, the electronic mail including the encrypted attached file is transmitted to the receiving terminal device. The receiving terminal device that has received the e-mail inquires of the attached file encryption device about the encryption password. The attached file encryption device compares the inquiry password sent from the receiving terminal device with the authentication password registered in advance in the attached file encryption device, and if they match, the authentication is successful. And the encrypted password is transmitted to the receiving terminal device. The receiving terminal device can acquire the original attached file by decrypting the encrypted attached file using the received encrypted password.

JP 2008-187280 A

  According to the electronic mail system disclosed in the above-mentioned Patent Document 1, when the transmitting terminal device transmits an electronic mail to the receiving terminal device already registered in the attached file encryption device, Since the registered receiving terminal device can obtain the encryption password from the attached file encryption device, the receiving terminal device decrypts the attached file.

  The present invention has been made in view of such circumstances, and even when a sender sends an e-mail to a recipient having an incorrect destination, the e-mail is read by the recipient. An object of the present invention is to obtain a program, an erroneous transmission prevention system, and an e-mail transmission management method capable of avoiding this.

A program according to a first aspect of the present invention is a program for managing transmission of an e-mail in a communication system including a management device and a plurality of terminal devices, wherein a computer as the management device is transmitted by a sender. E-mail receiving means for receiving the transmitted e-mail; key information storage means for storing key information necessary for reading the e-mail; and the e-mail received by the e-mail receiving means as the key information. Separately, the e-mail transmitting means for transmitting to the recipient who is the destination of the e-mail and the identification information for identifying the recipient with respect to the receiving terminal which is the terminal device used by the recipient Identification information confirmation means for confirming, e-mail identification information for identifying the e-mail, and a recipient identified by the identification information Whether or not to permit transmission of the key information toward the receiver identified by the identification information by transmitting specific information including the receiver identification information toward the sender, The transmission permission confirmation unit for confirming to the sender, and the key information storage unit stores the key information when the transmission is permitted by the sender as a result of confirmation by the transmission permission confirmation unit. A first computer program that causes key information to function as a key information transmitting unit that transmits key information to the recipient identified by the identification information is provided.

  Here, the “key information” includes the password used when encrypting the email (that is, the password used when decrypting the encrypted email) and the password for opening the email. Etc. are included. Further, the identification information confirmation method by the identification information confirmation means includes causing the recipient to input the recipient's email address to the receiving terminal and acquiring the email address from the receiving terminal.

  According to the program which concerns on a 1st aspect, an identification information confirmation means confirms the identification information for identifying a receiver with respect to a receiving terminal. Further, the transmission permission / refusal confirmation means sends specific information including e-mail specifying information for specifying an e-mail and receiver specifying information for specifying a receiver identified by the identification information to the sender. By transmitting, confirmation is made with the sender as to whether or not transmission of the key information is permitted toward the receiver identified by the identification information. The key information transmission means receives the key information stored in the key information storage means, identified by the identification information, when the sender permits transmission of the key information as a result of the confirmation by the transmission permission confirmation means. Send to the person. Therefore, even when an e-mail is transmitted with a wrong destination, the e-mail sender can recognize the error when confirming by the transmission permission / rejection confirmation means. If you notice an error, you can prevent the key information from being sent to the recipient at the wrong destination by not allowing the key information to be sent, and as a result, avoid the situation where the email is read Is possible.

  The program according to the second aspect of the present invention is the program according to the first aspect, in particular, the identification information includes an e-mail address, and the identification information confirmation means sends the identification information to the recipient. An e-mail address is input to the receiving terminal.

  According to the program according to the second aspect, the identification information confirmation unit causes the receiver to input the e-mail address of the receiver to the receiving terminal. Accordingly, the identification information of the recipient can be confirmed by a relatively simple process of allowing the recipient to input an e-mail address.

  The program according to the third aspect of the present invention is characterized in that, in the program according to the first or second aspect, the computer as a transmission terminal, which is a terminal device used by the sender, is identified from the transmission permission confirmation means. Whether or not to permit transmission of the key information to the recipient identified by the identification information based on the specific information received by the specific information receiving means and the specific information received by the specific information receiving means And a second computer program that causes the transmission permission confirmation message to function as display control means for displaying the message on the display screen of the transmission terminal, and the transmission permission confirmation message includes the recipient identification An email address of the recipient identified by the identification information generated based on the information is included. It is intended.

  According to the program according to the third aspect, the transmission permission / refusal confirmation message includes the e-mail address of the recipient identified by the identification information generated based on the recipient identification information. Therefore, the sender of the e-mail can easily determine whether or not the destination of the e-mail is wrong by confirming the e-mail address included in the transmission permission confirmation message.

The program according to the fourth aspect of the present invention is the program according to any one of the first to third aspects, in particular, a computer as a transmission terminal which is a terminal device used by the sender, the transmission permission confirmation Specific information receiving means for receiving the specific information from the means, and transmitting the key information to the recipient identified by the identification information based on the specific information received by the specific information receiving means. The transmission permission / rejection confirmation message further includes a second computer program that functions as a display control unit that displays a transmission permission / rejection confirmation message on the display screen of the transmission terminal. The address corresponding to the email address of the recipient identified by the identification information generated based on the recipient identification information. Is characterized in that included attribute information of the recipient.

  Here, the “attribute information” includes the name of the recipient obtained by converting the e-mail address using an address book or the like.

  According to the program according to the fourth aspect, in the transmission permission / rejection confirmation message, attribute information of the recipient corresponding to the email address of the recipient identified by the identification information, generated based on the recipient identification information Is included. Therefore, the sender of the electronic mail can easily determine whether or not the destination of the electronic mail is wrong by checking the attribute information included in the transmission permission confirmation message.

  The program according to the fifth aspect of the present invention is the program according to any one of the first to fourth aspects, in particular, a computer as a transmission terminal, which is a terminal device used by the sender, for confirming the transmission permission / inhibition. Specific information receiving means for receiving the specific information from the means, and transmitting the key information to the recipient identified by the identification information based on the specific information received by the specific information receiving means. The transmission permission / rejection confirmation message further includes a second computer program that functions as a display control unit that displays a transmission permission / rejection confirmation message on the display screen of the transmitting terminal. Information on the subject of the email generated based on the email identification information, information on the destination of the email, Information about the serial email attachments, and is characterized in that the information about the transmission time of the e-mail includes at least one of.

  According to the program according to the fifth aspect, the transmission permission / refusal confirmation message includes at least one of information on the subject of the electronic mail, information on the destination, information on the attached file, and information on the transmission date and time. Therefore, the sender of the e-mail can easily specify the target e-mail by referring to these pieces of information included in the transmission permission / refusal confirmation message.

  The program according to the sixth aspect of the present invention is the program according to any one of the third to fifth aspects, wherein the display control means automatically displays the transmission permission / rejection confirmation message on the display screen. It is characterized by.

  Examples of automatic display include automatic display using a pop-up window, for example.

  According to the program according to the sixth aspect, the display control means automatically displays a transmission permission / rejection confirmation message on the display screen. When a transmission permission / refusal confirmation message is transmitted as an e-mail, it is highly likely that the e-mail is missed by being buried in a huge number of other e-mails. On the other hand, by automatically displaying a transmission permission confirmation message on the display screen, the burden on the user to display the transmission permission confirmation message on the screen can be reduced, and the sender of the e-mail can miss the transmission permission confirmation message Can be reduced.

The program according to the seventh aspect of the present invention is a program according to any one of the first to sixth aspects, in particular, a computer as a transmission terminal which is a terminal device used by the sender, Before the e-mail transmitting means for transmitting the e-mail to the e-mail receiving means and the e-mail transmitting means of the transmitting terminal transmit the e-mail to the e-mail receiving means of the management device; And a second computer program that functions as display control means for automatically displaying a key setting confirmation message for confirming whether or not to set the key information in the electronic mail on the display screen of the transmitting terminal. It is characterized by comprising.

  According to the program according to the seventh aspect, the display control means determines whether or not to set the key information in the e-mail before the e-mail transmission means sends the e-mail to the e-mail receiving means of the management apparatus. A key setting confirmation message is automatically displayed on the display screen of the transmitting terminal. By automatically displaying the key setting confirmation message on the display screen, it is possible to reduce the operation burden on the user for displaying the key setting confirmation message on the screen.

  The program according to the eighth aspect of the present invention is a program according to any one of the first to seventh aspects, in particular, a computer as a transmission terminal which is a terminal device used by the sender, Before the e-mail transmitting means for transmitting the e-mail to the e-mail receiving means and the e-mail transmitting means of the transmitting terminal transmit the e-mail to the e-mail receiving means of the management device; , Further comprising a second computer program that functions as display control means for automatically displaying a destination confirmation message for confirming the destination of the electronic mail on the display screen of the transmission terminal. .

  According to the program according to the eighth aspect, the display control means has a destination for confirming the destination of the e-mail before the e-mail transmission means transmits the e-mail to the e-mail receiving means of the management apparatus. A confirmation message is automatically displayed on the display screen of the sending terminal. As a result, the sender of the e-mail can check whether the destination of the e-mail is correct. In addition, by automatically displaying the destination confirmation message on the display screen, it is possible to reduce the user's operational burden for displaying the destination confirmation message on the screen.

  A program according to a ninth aspect of the present invention is a program for managing transmission of e-mail in a communication system including a management device and a plurality of terminal devices, wherein the sender is a computer as the management device. An e-mail receiving unit for receiving the transmitted e-mail, an e-mail storage unit for storing the e-mail received by the e-mail receiving unit, and a terminal device used by a recipient who is the destination of the e-mail Identification information confirmation means for confirming identification information for identifying the recipient with respect to the receiving terminal, email identification information for identifying the email, and a recipient identified by the identification information Before the identification information is identified by transmitting the specific information including the recipient identification information to the sender to the sender. As a result of the confirmation by the transmission permission / rejection confirmation unit, the transmission permission / rejection confirmation unit confirms whether or not to permit transmission of the email to the receiver, and the transmission of the electronic mail is confirmed. When the sender permits, the electronic mail stored in the electronic mail storage means functions as an electronic mail transmission means for sending the electronic mail to the recipient identified by the identification information. It is what.

According to the program according to the ninth aspect, the identification information confirmation unit confirms the identification information for identifying the recipient with respect to the receiving terminal. Further, the transmission permission / refusal confirmation means sends specific information including e-mail specifying information for specifying an e-mail and receiver specifying information for specifying a receiver identified by the identification information to the sender. By transmitting, confirmation is made with respect to the sender as to whether or not transmission of an electronic mail is permitted to the recipient identified by the identification information. Then, the e-mail transmission means confirms the transmission permission / rejection confirmation means,
When the sender permits the transmission of the electronic mail, the electronic mail stored in the electronic mail storage means is transmitted to the receiver identified by the identification information. Therefore, even when an e-mail is transmitted with a wrong destination, the e-mail sender can recognize the error when confirming by the transmission permission / rejection confirmation means. By not allowing e-mails to be sent if you notice a mistake, you can prevent e-mails from being sent to recipients at the wrong destination, and as a result, avoid situations where e-mails are read Is possible.

  The program which concerns on the 10th aspect of this invention is a program for managing transmission of an email in a communication system provided with a some terminal device, Comprising: The transmission terminal which is a terminal device which the sender of the said email uses As a computer, e-mail transmission means for transmitting the e-mail, e-mail specifying information for specifying the e-mail, and recipient specifying information for specifying a recipient who is the destination of the e-mail; The electronic mail transmitting means functions as display control means for automatically displaying the electronic mail on the display screen of the transmitting terminal after the electronic mail is transmitted.

  According to the program according to the tenth aspect, the display control means automatically displays the e-mail specifying information and the recipient specifying information on the display screen of the transmitting terminal after the e-mail transmitting means transmits the e-mail. Therefore, even when an e-mail is sent with the wrong address, the sender of the e-mail notices the error by checking the e-mail specifying information and the recipient specifying information displayed on the display screen. be able to. In addition, by automatically displaying the e-mail specifying information and the recipient specifying information on the display screen, it is possible to reduce a user's operation burden for displaying these information on the screen.

  An erroneous transmission prevention system according to an eleventh aspect of the present invention is an erroneous transmission prevention system for preventing an erroneous transmission of an electronic mail between a plurality of terminal devices, and receives the electronic mail transmitted by a sender. E-mail receiving means, key information storage means for storing key information necessary for reading the e-mail, and the e-mail received by the e-mail receiving means separately from the key information, the e-mail E-mail transmitting means for transmitting to the recipient who is the destination of the information, and identification information confirmation means for confirming the identification information for identifying the recipient with respect to the receiving terminal which is the terminal device used by the recipient Specific information including e-mail specifying information for specifying the e-mail and recipient specifying information for specifying a recipient identified by the identification information to the sender. Transmitting permission confirmation means for confirming to the sender whether or not to permit transmission of the key information toward the receiver identified by the identification information, and the transmission When the sender permits the transmission of the key information as a result of confirmation by the permission confirmation means, the key information stored in the key information storage means is directed to the receiver identified by the identification information. And key information transmitting means for transmitting the information.

  Here, the erroneous transmission prevention system may be configured in a single casing as a single computer, or may be configured in a plurality of casings as a plurality of computers.

According to the erroneous transmission prevention system according to the eleventh aspect, the identification information confirmation unit confirms identification information for identifying the recipient with respect to the receiving terminal. Further, the transmission permission / refusal confirmation means sends specific information including e-mail specifying information for specifying an e-mail and receiver specifying information for specifying a receiver identified by the identification information to the sender. By transmitting, confirmation is made with the sender as to whether or not transmission of the key information is permitted toward the receiver identified by the identification information. The key information transmission means receives the key information stored in the key information storage means, identified by the identification information, when the sender permits transmission of the key information as a result of the confirmation by the transmission permission confirmation means. Send to the person. Therefore, even when an e-mail is transmitted with a wrong destination, the e-mail sender can recognize the error when confirming by the transmission permission / rejection confirmation means. If you notice an error, you can prevent the key information from being sent to the recipient at the wrong destination by not allowing the key information to be sent. As a result, avoid the situation where the email is read Is possible.

  An e-mail transmission management method according to a twelfth aspect of the present invention is a method for managing e-mail transmission in a communication system including a plurality of terminal devices, wherein (A) the e-mail transmitted by a sender is transmitted. Receiving the electronic mail received in the step (A) separately from the key information, (B) storing the key information necessary for reading the electronic mail, and (C) the electronic mail received in the step (A). Transmitting to a recipient who is the destination of the mail; (D) confirming identification information for identifying the recipient with respect to a receiving terminal which is a terminal device used by the recipient; (E) directing specific information including e-mail specifying information for specifying the e-mail and recipient specifying information for specifying a recipient identified by the identification information to the sender Confirming to the sender whether or not to permit transmission of the key information toward the receiver identified by the identification information by transmitting, and (F) the step ( When the sender permits the transmission of the key information as a result of the confirmation in E), the key information stored in the step (B) is transmitted to the receiver identified by the identification information. And a step.

  According to the e-mail transmission management method of the twelfth aspect, in step (D), identification information for identifying the recipient is confirmed with respect to the receiving terminal. In step (E), specific information including e-mail specifying information for specifying an e-mail and recipient specifying information for specifying a recipient identified by the identification information is directed to the sender. By transmitting, confirmation is made with the sender as to whether or not transmission of the key information is permitted toward the receiver identified by the identification information. In step (F), when the sender permits transmission of the key information as a result of the confirmation in step (E), the receiver who identifies the key information stored in step (B) by the identification information. Send to. Therefore, even when an e-mail is transmitted with a wrong destination, the e-mail sender can notice the mistake at the time of confirmation in step (E). If you notice an error, you can prevent the key information from being sent to the recipient at the wrong destination by not allowing the key information to be sent, and as a result, avoid the situation where the email is read Is possible.

  According to the present invention, even when a sender sends an e-mail to a recipient having an incorrect destination, it is possible to avoid the e-mail being read by the recipient. .

1 is a block diagram schematically showing an overall configuration of a communication system according to an embodiment of the present invention. It is a block diagram which shows the structure of a management apparatus schematically. It is a figure which shows the function structure of a management apparatus. It is a block diagram which shows the structure of a transmission terminal roughly. It is a figure which shows the function structure of a transmission terminal. It is a block diagram which shows the structure of a receiving terminal roughly. It is a figure which shows a processing sequence in case a sender | transmitter transmits an email using a transmission terminal and a receiver receives an email using a receiving terminal. It is a figure which shows a processing sequence in case a sender | transmitter transmits an email using a transmission terminal and a receiver receives an email using a receiving terminal. It is a figure which shows an example of an encryption selection screen. It is a figure which shows an example of an address input screen. It is a figure which shows an example of a transmission permission confirmation screen. It is a figure which shows the function structure of the management apparatus which concerns on a modification. It is a figure which shows a processing sequence in case a sender | transmitter transmits an email using a transmission terminal and a receiver receives an email using a receiving terminal. It is a figure which shows a processing sequence in case a sender | transmitter transmits an email using a transmission terminal and a receiver receives an email using a receiving terminal. It is a figure which shows an example of a transmission permission confirmation screen.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the element which attached | subjected the same code | symbol in different drawing shall show the same or corresponding element.

  FIG. 1 is a block diagram schematically showing an overall configuration of a communication system 1 according to an embodiment of the present invention. The terminal device 2A, the management device 3, the mail server 4A, and the firewall 5A are connected to a LAN 6A installed in the facility premises. The terminal device 2B, the mail server 4B, and the firewall 5B are connected to a LAN 6B installed in another facility premises. The firewalls 5A and 5B are connected to a public communication network 7 such as an IP network. The mail servers 4A and 4B may be connected to the communication network 7. Hereinafter, a case where an e-mail is transmitted from a user who uses the terminal device 2A (hereinafter referred to as “sender”) to a user who uses the terminal device 2B (hereinafter referred to as “recipient”) will be described as an example. That is, the terminal device 2A is an electronic mail transmission terminal (hereinafter referred to as “transmission terminal 2A”), and the terminal device 2B is an electronic mail reception terminal (hereinafter referred to as “reception terminal 2B”).

  FIG. 2 is a block diagram schematically showing the configuration of the management device 3. A CPU 10, a memory 11 such as a RAM, a storage unit 12 such as a hard disk, and a communication interface 13 are connected to each other via a bus 14. The storage unit 12 stores a management device program 15.

  FIG. 3 is a diagram illustrating a functional configuration of the management apparatus 3. When the management apparatus program 15 is loaded into the memory 11 and executed by the CPU 10, the management apparatus 3 includes an e-mail reception unit 20, an encryption information reception unit 21, an encryption unit 22, an encryption information storage unit 23, It functions as an e-mail transmission unit 24, an identification information confirmation unit 25, a transmission permission / rejection confirmation unit 26, and a password transmission unit 27. The transmission permission / rejection confirmation unit 26 includes a specific information transmission unit 28 and a confirmation result reception unit 29. Details of each function will be described later.

  FIG. 4 is a block diagram schematically showing the configuration of the transmission terminal 2A. A CPU 30A, a memory 31A such as a RAM, a storage unit 32A such as a hard disk, a communication interface 33A, a display unit 35A such as a liquid crystal display device, and an input unit 36A such as a mouse and a keyboard are mutually connected via a bus 34A. It is connected to the. The storage unit 32A stores electronic mail software 37A and an agent program 38A.

  FIG. 5 is a diagram illustrating a functional configuration of the transmission terminal 2A. When the agent program 38A is loaded into the memory 31A and executed by the CPU 30A, the transmission terminal 2A includes the display control unit 40, the encrypted information transmission unit 41, the email transmission unit 42, the specific information reception unit 43, and the confirmation result. It functions as the transmission unit 44. Details of each function will be described later.

FIG. 6 is a block diagram schematically showing the configuration of the receiving terminal 2B. A CPU 30B, a memory 31B such as a RAM, a storage unit 32B such as a hard disk, a communication interface 33B, a display unit 35B such as a liquid crystal display device, and an input unit 36B such as a mouse and a keyboard are mutually connected via a bus 34B. It is connected to the. The storage unit 32B stores electronic mail software 37B.

  7 and 8 are diagrams showing a processing sequence in a case where a sender transmits an e-mail using the transmission terminal 2A and a receiver receives an e-mail using the reception terminal 2B. First, in step S01, the sender creates an e-mail using the e-mail software 37A, and then presses the send button. As a result, an e-mail transmission request is input to the CPU 30A.

  Next, in step S02, the CPU 30A loads the agent program 38A from the storage unit 32A to the memory 31A, thereby starting the agent program 38A. However, instead of starting the agent program 38A when an e-mail transmission request is input to the CPU 30A, the agent program 38A may be resident in the memory 31A.

  Next, in step S03, the display control unit 40 displays an encryption selection screen 50 on the display unit 35A for allowing the sender to select the processing content of the email encryption. Here, the display control unit 40 automatically displays the encryption selection screen 50 on the display unit 35A as a pop-up window. In other words, the encryption selection screen 50 is automatically displayed on the display unit 35A without the keyboard operation or mouse operation for the sender to display it.

  Next, in step S04, the sender uses the encryption selection screen 50 displayed on the display unit 35A to select the processing content of the email encryption. FIG. 9 is a diagram illustrating an example of the encryption selection screen 50. In the item 501 (destination confirmation message) of the encryption selection screen 50, information on the subject, destination, CC, and attached file of the target electronic mail is displayed. Here, it is only necessary to display arbitrary information for specifying the destination of the target electronic mail in the destination column. For example, the mail address of the recipient who is the destination may be displayed, or the name of the recipient may be displayed. The sender can identify the target electronic mail by referring to the information displayed in the item 501, and can confirm whether there is an error in the destination or the attached file.

  In addition, on the encryption selection screen 50, a plurality of items (key setting confirmation messages) relating to the processing contents of encryption are displayed together with check boxes 502 to 505. The sender can select encryption processing contents by checking arbitrary check boxes 502 to 505. Specifically, when it is desired to encrypt the body of the e-mail, the check box 502 of the item “Encrypt body” is checked. If the attached file is to be encrypted, the check box 503 of the item “Encrypt attached file” is checked. If you check one or both of the check boxes 502 and 503 and want to set the encryption password yourself, check the check box 504 for the item “Set password manually”. At the same time, a desired password is entered in an item 506 displayed as “password”. On the other hand, when it is desired to automatically set an encryption password, the check box 505 of the item “Set password automatically” is checked.

  When the selection of the encryption processing content is completed and the sender presses the OK button 507, the encryption processing content is determined. When the sender presses a cancel button 508, the e-mail transmission process is stopped.

In step S <b> 05, the encryption information transmission unit 41 transmits information regarding the determined encryption processing content (hereinafter referred to as “encryption information”) to the management apparatus 3. At the same time, the e-mail transmission unit 42 sets the target e-mail (not encrypted at this time).
Is transmitted to the management apparatus 3.

  In step S06, the encrypted information receiving unit 21 receives the encrypted information transmitted from the encrypted information transmitting unit 41. The e-mail receiving unit 20 receives the e-mail transmitted from the e-mail transmitting unit 42.

  In step S07, the encrypted information is registered in the encrypted information storage unit 23 in association with the target electronic mail. For example, the password set by the sender, the ID of the agent program 38A of the sending terminal 2A set in advance (or the terminal ID of the sending terminal 2A or the sender's mail address), the subject of the target e-mail, The destination, CC, attached file, and information related to the transmission date and time are associated with each other and registered in the encrypted information storage unit 23. Here, when the encryption information does not include a password (that is, when the check box 505 is checked), the management apparatus 3 sets the password by itself and stores the password in the encryption information storage unit 23. sign up. If it is not necessary to encrypt the e-mail (that is, when the check boxes 502 and 503 are not checked), the registration of the encryption information in the encryption information storage unit 23 is omitted.

  Next, in step S08, the encryption unit 22 encrypts the e-mail by encrypting the e-mail using the password set by the sender or the password set by the management apparatus 3 as a key for encryption. Created e-mail (hereinafter referred to as “encrypted mail”). That is, the password is key information for encrypting the electronic mail and for decrypting the encrypted electronic mail. Any algorithm can be used as the encryption algorithm. The password can also be used as key information for opening a locked electronic mail.

  Next, in step S09, the e-mail transmission unit 24 transmits the encrypted mail to the receiving terminal 2B (strictly, the mail address of the recipient) without transmitting the password. At that time, the e-mail transmission unit 24 transmits a predetermined URL as a password reference destination in the encrypted mail. This URL includes, for example, the address of the management device 3, the ID of the agent program 38A of the transmission terminal 2A (or the terminal ID of the transmission terminal 2A, or the mail address of the sender), and the mail address of the receiver (or the reception terminal 2B). The agent program ID or the terminal ID of the receiving terminal 2B) and the e-mail transmission date and time. Since the URL of the recipient (or the agent program ID of the receiving terminal 2B or the terminal ID of the receiving terminal 2B) is included in the URL, even if there are a plurality of e-mail destinations, each recipient (or agent) A different URL is set for each program or each receiving terminal. Note that the information regarding the URL is transmitted without being encrypted.

  In step S <b> 10, the receiving terminal 2 </ b> B receives the encrypted mail transmitted from the management device 3. Next, in step S11, the receiving terminal 2B accesses the designated URL (management device 3) included in the encrypted mail by the operation of the recipient. When the management device 3 receives access from the receiving terminal 2B, in step S12, the identification information confirmation unit 25 next receives an address input screen for acquiring identification information for identifying (authenticating) the recipient from the receiving terminal 2B. 51 pieces of image information are transmitted to the receiving terminal 2B.

  In step S <b> 13, the receiving terminal 2 </ b> B receives the image information of the address input screen 51 transmitted from the identification information confirmation unit 25. Then, an address input screen 51 is created based on the image information and displayed on the display unit 35B. FIG. 10 is a diagram illustrating an example of the address input screen 51. On the address input screen 51, an item 511 for inputting a mail address is displayed.

  Next, in step S <b> 14, the recipient inputs a mail address for receiving a password for decrypting the encrypted mail (that is, a password stored in the encrypted information storage unit 23) in the item 511. Normally, it is considered that the same mail address as the mail address that received the encrypted mail is input to the item 511. When the input of the e-mail address is completed and the recipient presses the send button 512, the e-mail address is transmitted from the receiving terminal 2B to the management apparatus 3. If the recipient presses the cancel button 513, the password acquisition process is stopped.

  In step S15, the identification information confirmation unit 25 receives the mail address transmitted from the receiving terminal 2B. Thereby, the identification information confirmation part 25 can acquire the identification information (in this case, the mail address of the recipient who uses the receiving terminal 2B) for identifying the recipient who has accessed the own URL.

  Next, in step S16, the specific information transmitting unit 28 of the transmission permission / refusal confirmation unit 26 specifies information for specifying the target electronic mail (hereinafter referred to as “electronic mail specific information”) and the recipient who has accessed. (Hereinafter referred to as “recipient identification information”) is transmitted to the transmitting terminal 2A. As the e-mail specifying information, information about the subject, destination, CC, attached file, and transmission date and time of the target e-mail stored in the encrypted information storage unit 23 can be used. Further, as the recipient identification information, the email address of the recipient received in step S15 can be used.

  Next, in step S <b> 17, the specific information receiving unit 43 receives the e-mail specifying information and the receiver specifying information transmitted from the specific information transmitting unit 28.

  Next, in step S18, the display control unit 40 transmits a transmission permission / rejection confirmation screen 52 (transmission permission / rejection confirmation message for allowing the sender to confirm whether or not the password may be transmitted to the recipient who has accessed the management apparatus 3. ) Is displayed on the display unit 35A. Here, the display control unit 40 automatically displays the transmission permission / rejection confirmation screen 52 on the display unit 35A as a pop-up window. That is, the transmission permission / refusal confirmation screen 52 is automatically displayed on the display unit 35A without the keyboard operation or mouse operation for the sender to display it.

  Next, in step S19, the sender uses the transmission permission confirmation screen 52 displayed on the display unit 35A to select whether or not to permit password transmission. FIG. 11 is a diagram illustrating an example of the transmission permission / refusal confirmation screen 52. In the item 521 of the transmission permission / refusal confirmation screen 52, information on the subject, destination, CC, attached file, transmission date / time, and password of the target electronic mail is displayed. In addition, in the item 522 of the transmission permission / refusal confirmation screen 52, the mail address of the recipient who is going to transmit the password is displayed. These pieces of information displayed in the items 521 and 522 can be created based on the e-mail specifying information and the recipient specifying information received in step S17. The item 522 displays the attribute information of the recipient corresponding to the mail address. In the example shown in FIG. 11, the name of the recipient calculated from the address book or the like based on the mail address is displayed as the attribute information.

Next, in step S20, the sender identifies the target e-mail by referring to the information displayed in the item 521, and transmits the password by referring to the information displayed in the item 522. Check whether there is an error in the destination. In order to permit transmission of a password to the transmission destination, a check box 523 of an item displayed as “Send password” is checked, and then an OK button 524 is pressed. On the other hand, when the e-mail is erroneously transmitted without noticing the mistake of the e-mail destination, and the erroneous transmission is noticed by the confirmation of the transmission permission confirmation screen 52, etc.
When the transmission of the password to the transmission destination is not permitted, the cancel button 525 is pressed without checking the check box 523.

  If the OK button 524 is pressed by the sender, the confirmation result transmitting unit 44 transmits a confirmation result (transmission OK) of transmission permission / rejection by the sender to the management apparatus 3 in step S21. Next, in step S <b> 22, the confirmation result receiving unit 29 of the transmission permission / inhibition confirmation unit 26 receives the confirmation result transmitted from the confirmation result transmitting unit 44. When the cancel button 525 is pressed by the sender, the confirmation result transmission unit 44 does not transmit the confirmation result to the management device 3.

  Next, in step S23, the password transmission unit 27 transmits the password stored in the encrypted information storage unit 23 toward the receiving terminal 2B (the mail address input in the item 511 in FIG. 10). Next, in step S24, the receiving terminal 2B receives the password transmitted from the password transmitting unit 27. Then, by decrypting the encrypted mail received in step S10 using the received password, the recipient can read the original electronic mail before being encrypted.

  As described above, according to the present embodiment, the identification information confirmation unit 25 confirms the identification information (email address in the above example) for identifying the recipient with respect to the receiving terminal 2B. Further, the transmission permission / refusal confirmation unit 26 includes e-mail specifying information for specifying the target e-mail, and recipient specifying information (e-mail address in the above example) for specifying the recipient identified by the identification information. Is transmitted to the transmission terminal 2A to confirm whether or not to permit transmission of the password to the receiver identified by the identification information. Then, as a result of confirmation by the transmission permission / rejection confirmation unit 26, the password transmission unit 27 identifies the password stored in the encryption information storage unit 23 by the identification information when the sender permits transmission of the password. Send to recipient. Therefore, even if the sender sends an e-mail with the wrong destination, the sender of the e-mail can notice the mistake when confirming by the transmission permission confirmation unit 26. If you notice a mistake, you can prevent the password from being sent to the recipient at the wrong destination by not allowing the password to be sent, and as a result, you can avoid the situation where the email is read It becomes.

  Moreover, according to this Embodiment, the identification information confirmation part 25 makes a receiver input the mail address of the said receiver into the receiving terminal 2B with respect to a receiver. Accordingly, the identification information of the recipient can be confirmed by a relatively simple process of allowing the recipient to input a mail address.

  Further, according to the present embodiment, the transmission permission / refusal confirmation screen 52 (see FIG. 11) includes the e-mail address (“mail address” of the item 522) of the recipient identified by the identification information. Therefore, the sender of the e-mail can easily determine whether or not the destination of the e-mail is wrong by confirming the e-mail address included in the transmission permission / refusal confirmation screen 52.

  Further, according to the present embodiment, the transmission permission / refusal confirmation screen 52 includes the attribute information (“name” of the item 522) of the recipient identified by the identification information. Therefore, the sender of the e-mail can easily determine whether or not the destination of the e-mail is wrong by checking this attribute information included in the transmission permission / rejection confirmation screen 52.

  In addition, according to the present embodiment, the transmission permission / refusal confirmation screen 52 includes at least one of the information on the subject, destination, attached file, and transmission date / time of the e-mail (item 521). Therefore, the sender of the e-mail can easily specify the target e-mail by referring to these pieces of information included in the transmission permission / refusal confirmation screen 52.

  Further, according to the present embodiment, the display control unit 40 automatically displays the transmission permission / inhibition confirmation screen 52 on the display screen of the display unit 35A. When the transmission permission / refusal confirmation screen 52 is transmitted as an e-mail, there is a high possibility that the e-mail will be overlooked by being buried in a huge number of other e-mails. On the other hand, by automatically displaying the transmission permission / rejection confirmation screen 52 on the display screen, the operation burden on the user for displaying the transmission permission / rejection confirmation screen 52 can be reduced, and the sender of the e-mail misses the transmission permission / rejection confirmation screen 52. The possibility can be reduced.

  Further, according to the present embodiment, the display control unit 40 asks the sender whether or not to encrypt the e-mail before the e-mail transmission unit 42 transmits the e-mail to the management device 3. An encryption selection screen 50 for confirmation is automatically displayed on the display screen of the display unit 35A. By automatically displaying the encryption selection screen 50 on the display screen, it is possible to reduce the operation burden on the user for displaying the encryption selection screen 50.

Further, according to the present embodiment, the display control unit 40 encrypts the sender to confirm the destination of the e-mail before the e-mail transmission unit 42 transmits the e-mail to the management apparatus 3. The customization selection screen 50 (item 501) is automatically displayed on the display screen of the display unit 35A. As a result, the sender of the e-mail can check whether the destination of the e-mail is correct. In addition, by automatically displaying the encryption selection screen 50 on the display screen, it is possible to reduce a user's operation burden for displaying the encryption selection screen 50.
<Modification>

  FIG. 12 is a diagram illustrating a functional configuration of the management apparatus 3 according to the modification. An electronic mail storage unit 60 and an electronic mail incoming notification unit 61 are added to the functional configuration shown in FIG.

  FIGS. 13 and 14 are diagrams illustrating a processing sequence in a case where the sender transmits an e-mail using the transmission terminal 2A and the receiver receives an e-mail using the reception terminal 2B. The processing of steps S31 to S37 is the same as the processing of steps S01 to S07 shown in FIG.

  Following step S37, in step S38, the encryption unit 22 creates an encrypted mail by encrypting the e-mail using the password as a key for encryption. The created encrypted mail is stored in the electronic mail storage unit 60.

  Next, in step S39, the incoming e-mail notification unit 61 sends an incoming notification mail for notifying an incoming e-mail from the transmission terminal 2A (strictly, a sender) without transmitting a password and an encrypted mail. Transmission is performed toward the receiving terminal 2B (strictly, the destination mail address). At that time, the incoming e-mail notification unit 61 transmits a predetermined URL as a password reference destination in the incoming notification mail.

  Next, in step S <b> 40, the receiving terminal 2 </ b> B receives the incoming call notification mail transmitted from the management device 3. The process of steps S41 to S52 is the same as the process of steps S11 to S22 shown in FIG. However, on the transmission permission / inhibition confirmation screen 52, whether or not to transmit a password is confirmed in addition to whether or not to transmit a password. FIG. 15 is a diagram illustrating an example of the transmission permission / refusal confirmation screen 52. The item 522 displays a password and a mail address and a name of a recipient who is going to send an e-mail.

Subsequent to step S52, in step S53, the password transmission unit 27 transmits the password stored in the encrypted information storage unit 23 to the receiving terminal 2B (the mail address received in step S45). Further, the e-mail transmission unit 24 transmits the encrypted mail stored in the e-mail storage unit 60 to the receiving terminal 2B (the mail address received in step S45). In order to ensure safety, it is desirable to send the password and the encrypted mail as separate emails.

  In step S54, the receiving terminal 2B receives the password transmitted from the password transmitting unit 27. Further, the encrypted mail transmitted from the electronic mail transmitting unit 24 is received. Then, by decrypting the received encrypted mail using the received password, the receiver can read the original electronic mail before being encrypted.

  In this modification, it is not always necessary to encrypt the e-mail. When the electronic mail is not encrypted, it is not necessary to transmit a password from the management apparatus 3 to the receiving terminal 2B.

  According to this modification, the transmission permission / refusal confirmation unit 26 confirms with the sender whether or not to permit transmission of an e-mail to the receiver identified by the identification information. The e-mail transmission means receives the e-mail stored in the e-mail storage means by the identification information when the sender permits the transmission of the e-mail as a result of the confirmation by the transmission permission / rejection confirmation means. Send to the person. Therefore, even when an e-mail is transmitted with a wrong destination, the e-mail sender can recognize the error when confirming by the transmission permission / rejection confirmation means. By not allowing e-mails to be sent if you notice a mistake, you can prevent e-mails from being sent to recipients at the wrong destination, and as a result, avoid situations where e-mails are read Is possible.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined not by the above-mentioned meaning but by the scope of claims for patent, and is intended to include all modifications within the scope and meaning equivalent to the scope of claims for patent.

DESCRIPTION OF SYMBOLS 1 Communication system 2A Terminal device (transmission terminal)
2B terminal device (receiving terminal)
DESCRIPTION OF SYMBOLS 3 Management apparatus 15 Management apparatus program 20 E-mail receiving part 21 Encrypted information receiving part 22 Encrypting part 23 Encrypted information storage part 24 E-mail transmitting part 25 Identification information confirmation part 26 Transmission permission confirmation part 27 Password transmission part 28 Specification Information transmission unit 29 Confirmation result reception unit 35A Display unit 38A Agent program 40 Display control unit 41 Encrypted information transmission unit 42 E-mail transmission unit 43 Specific information reception unit 44 Confirmation result transmission unit 50 Encryption selection screen 51 Address input screen 52 Transmission Acceptance confirmation screen 60 E-mail storage unit 61 E-mail incoming notification unit

Claims (12)

A program for managing e-mail transmission in a communication system comprising a management device and a plurality of terminal devices,
A computer as the management device;
E-mail receiving means for receiving the e-mail sent by the sender;
Key information storage means for storing key information necessary for reading the electronic mail;
E-mail sending means for sending the e-mail received by the e-mail receiving means to a recipient who is the destination of the e-mail separately from the key information;
Identification information confirmation means for confirming identification information for identifying the recipient with respect to the receiving terminal which is a terminal device used by the recipient;
By transmitting to the sender specific information including e-mail specifying information for specifying the e-mail and recipient specifying information for specifying a recipient identified by the identification information, Transmission permission / rejection confirmation means for confirming to the sender whether or not to permit transmission of the key information toward the receiver identified by the identification information;
As a result of confirmation by the transmission permission confirmation means, when the sender permits transmission of the key information, the receiver that identifies the key information stored in the key information storage means by the identification information A program comprising a first computer program that functions as key information transmitting means for transmitting to a computer. The identification information includes an email address;
The program according to claim 1, wherein the identification information confirmation unit causes the recipient to input an email address of the recipient to the receiving terminal. A computer as a transmission terminal, which is a terminal device used by the sender,
Specific information receiving means for receiving the specific information from the transmission permission confirmation means;
Based on the specific information received by the specific information receiving means, a transmission permission / reject confirmation message for confirming whether or not transmission of the key information is permitted to the recipient identified by the identification information Is further provided with a second computer program that functions as display control means for displaying on the display screen of the transmission terminal,
The program according to claim 1 or 2, wherein the transmission permission confirmation message includes an e-mail address of the recipient identified by the identification information generated based on the recipient identification information. A computer as a transmission terminal, which is a terminal device used by the sender,
Specific information receiving means for receiving the specific information from the transmission permission confirmation means;
Based on the specific information received by the specific information receiving means, a transmission permission / reject confirmation message for confirming whether or not transmission of the key information is permitted to the receiver identified by the identification information. Is further provided with a second computer program that functions as display control means for displaying on the display screen of the transmission terminal,
The transmission permission confirmation message includes attribute information of the recipient corresponding to the email address of the recipient identified by the identification information, generated based on the recipient identification information. The program as described in any one of -3. A computer as a transmission terminal, which is a terminal device used by the sender,
Specific information receiving means for receiving the specific information from the transmission permission confirmation means;
Based on the specific information received by the specific information receiving means, a transmission permission / reject confirmation message for confirming whether or not transmission of the key information is permitted to the recipient identified by the identification information Is further provided with a second computer program that functions as display control means for displaying on the display screen of the transmission terminal,
The transmission permission / rejection confirmation message is generated based on the e-mail specifying information,
Information about the subject of the email,
Information about the email address;
Information on the attached file of the e-mail, and information on the transmission date and time of the e-mail;
The program according to claim 1, wherein at least one of the programs is included.   The program according to any one of claims 3 to 5, wherein the display control means automatically displays the transmission permission / rejection confirmation message on the display screen. A computer as a transmission terminal, which is a terminal device used by the sender,
Email sending means for sending the email to the email receiving means of the management device;
A key for confirming whether or not to set the key information in the e-mail before the e-mail transmission means of the transmission terminal transmits the e-mail to the e-mail reception means of the management device The program according to any one of claims 1 to 6, further comprising a second computer program that functions as display control means for automatically displaying a setting confirmation message on a display screen of the transmission terminal. A computer as a transmission terminal, which is a terminal device used by the sender,
Email sending means for sending the email to the email receiving means of the management device;
Before the e-mail transmission unit of the transmission terminal transmits the e-mail to the e-mail reception unit of the management apparatus, a destination confirmation message for confirming the destination of the e-mail is sent to the transmission terminal. The program according to any one of claims 1 to 7, further comprising a second computer program that functions as display control means for automatically displaying on a display screen. A program for managing e-mail transmission in a communication system comprising a management device and a plurality of terminal devices,
A computer as the management device;
E-mail receiving means for receiving the e-mail sent by the sender;
E-mail storage means for storing the e-mail received by the e-mail receiving means;
Identification information confirmation means for confirming identification information for identifying the recipient with respect to the receiving terminal which is a terminal device used by the recipient who is the recipient of the e-mail;
By transmitting to the sender specific information including e-mail specifying information for specifying the e-mail and recipient specifying information for specifying a recipient identified by the identification information, A transmission permission / refusal confirmation means for confirming to the sender whether or not to permit transmission of the e-mail to the receiver identified by the identification information;
As a result of the confirmation by the transmission permission / refusal confirmation means, when the sender permits the transmission of the e-mail, the e-mail stored in the e-mail storage means is identified by the identification information. A program for functioning as an e-mail transmission means for transmitting to a computer. A program for managing transmission of e-mail in a communication system comprising a plurality of terminal devices,
A computer as a transmission terminal, which is a terminal device used by the sender of the e-mail,
E-mail transmission means for transmitting the e-mail;
After the e-mail transmitting means transmits the e-mail, e-mail specifying information for specifying the e-mail and recipient specifying information for specifying a recipient who is the destination of the e-mail, A program that functions as display control means for automatically displaying on a display screen of a transmission terminal. An erroneous transmission prevention system for preventing erroneous transmission of an email between a plurality of terminal devices,
E-mail receiving means for receiving the e-mail sent by the sender;
Key information storage means for storing key information necessary for reading the electronic mail;
E-mail sending means for sending the e-mail received by the e-mail receiving means to a recipient who is the destination of the e-mail separately from the key information;
Identification information confirmation means for confirming identification information for identifying the recipient with respect to the receiving terminal which is a terminal device used by the recipient;
By transmitting to the sender specific information including e-mail specifying information for specifying the e-mail and recipient specifying information for specifying a recipient identified by the identification information, Transmission permission / rejection confirmation means for confirming to the sender whether or not to permit transmission of the key information toward the receiver identified by the identification information;
As a result of confirmation by the transmission permission confirmation means, when the sender permits transmission of the key information, the receiver that identifies the key information stored in the key information storage means by the identification information An erroneous transmission prevention system comprising key information transmission means for transmitting toward the key. A method for managing the transmission of emails in a communication system comprising a plurality of terminal devices,
(A) receiving the email sent by the sender;
(B) storing key information necessary for reading the electronic mail;
(C) transmitting the electronic mail received in step (A) to a recipient who is the destination of the electronic mail separately from the key information;
(D) confirming identification information for identifying the receiver with respect to a receiving terminal which is a terminal device used by the receiver;
(E) Transmitting specific information including e-mail specifying information for specifying the e-mail and recipient specifying information for specifying a recipient identified by the identification information to the sender Confirming to the sender whether or not to permit transmission of the key information toward the receiver identified by the identification information;
(F) When the sender permits the transmission of the key information as a result of the confirmation in the step (E), the key information stored in the step (B) is identified by the identification information. A method for managing transmission of an e-mail, comprising: a step of transmitting to a person.

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