JP2003022008A - Information processing apparatus and method, recording medium, and program - Google Patents

Abstract

(57) [Summary] [Problem] To prevent the occurrence of damage due to execution of a script. SOLUTION: A developer who develops a script generates a digest of the script by applying a hash function to the developed script. The digest of the generated script is encrypted with a secret key and included in the script as a digital signature. The recipient side:
A digest of the script is generated by applying a hash function to the received script, and a digital signature included in the script is decrypted with a public key. Then, the receiver side determines whether the digest of the generated script matches the decrypted digital signature, and when they match, determines that the script is valid and starts execution.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing apparatus and method, a recording medium, and a program, and in particular, when an electronic mail attached with a script is received, it is executed because the script is modified. The present invention relates to an information processing apparatus and method, a recording medium, and a program capable of preventing some damage from being caused by the above.

[0002]

2. Description of the Related Art A so-called electronic mail system, which is a system for transmitting and receiving text-based data via a network, is widely used.

Electronic mail (hereinafter simply referred to as mail)
The receiving device that has received the message displays the received mail as text.

There are times when the sender of a mail wants the reader of the mail to perform some action.

In Japanese Unexamined Patent Publication No. 2000-47955 and Japanese Unexamined Patent Publication No. 11-65964, data used for executing an application program is attached to an e-mail in order to cause a party receiving the e-mail to perform some processing or action. The invention of transmitting and receiving is disclosed.

[0006]

As described above, when the sender of the mail can cause the reader of the mail to perform a desired action, the sender of the malicious mail sends the mail. You will be able to perform actions against the reader's will.

[0007] For example, there is a possibility that the data stored in the received device may be destroyed by the execution of the action.

The present invention has been made in view of such a situation, and an object thereof is to prevent damage from occurring by providing a mechanism in which an illegal action is not executed.

[0009]

A first information processing apparatus of the present invention comprises a creating means for creating a script, and a calculating means for applying a hash function to the script created by the creating means to calculate a hash value. And an encryption unit that encrypts the hash value calculated by the calculation unit using a predetermined key, and an embedding unit that incorporates the hash value encrypted by the encryption unit into the script generated by the generation unit. It is characterized by

The first information processing method of the present invention comprises a creating step for creating a script, a calculating step for applying a hash function to the script created by the processing of the creating step, and calculating a hash value, and a calculating step. An encryption step of encrypting the hash value calculated in the process of using a predetermined key, and an embedding step of incorporating the hash value encrypted in the process of the encryption step into the script generated in the process of the generation step. It is characterized by including.

The program of the first recording medium of the present invention is
A creating step of creating a script, a calculation step of applying a hash function to the script created by the processing of the creating step to calculate a hash value, and a hash value calculated by the processing of the calculating step using a predetermined key And an embedding step of incorporating the hash value encrypted in the process of the encrypting step into the script generated in the process of the generating step.

A first program of the present invention is a creation step of creating a script, a calculation step of applying a hash function to the script created in the processing of the creation step to calculate a hash value, and processing of the calculation step. A computer having an encryption step of encrypting the hash value calculated in step 1 using a predetermined key, and an embedding step of incorporating the hash value encrypted in the process of the encryption step into the script generated in the process of the generation step. To run.

The second information processing apparatus according to the present invention interlocks with a mail opening instruction to extract the script added as an attachment file to the mail, and the first extracting means to extract the script. Second extracting means for extracting predetermined information encrypted from the script, decryption means for decoding predetermined information encrypted by the second extracting means, and extraction by the first extracting means Applying a hash function to the generated script, calculating means for calculating a hash value, predetermined information decrypted by the decrypting means,
When the hash value calculated by the calculation means is the same as the determination means, and when the determination means determines that the predetermined information and the hash value match, the processing by the script extracted by the first extraction means And executing means for executing.

A second information processing method according to the present invention comprises a first extraction step of extracting a script added as an attachment file to a mail in conjunction with a mail opening instruction, and a process of the first extraction step. A second extraction step of extracting the encrypted predetermined information from the extracted script; a decryption step of decrypting the encrypted predetermined information extracted by the processing of the second extraction step; The hash value is applied to the script extracted in the process of the extraction step to calculate the hash value, the predetermined information decrypted in the process of the decryption step, and the hash value calculated in the process of the calculation step If it is determined that the predetermined information and the hash value match in the determination step of determining whether they match and the processing of the determination step, the first extraction step Characterized in that it comprises an execution step of executing the processing by the issued script.

The program of the second recording medium of the present invention is
A first extraction step that extracts a script added as an attachment file to an email in conjunction with an instruction to open the email, and a predetermined encrypted information is extracted from the script extracted in the processing of the first extraction step. A second extracting step, a decrypting step of decrypting the encrypted predetermined information extracted in the process of the second extracting step, and a hash function for the script extracted in the process of the first extracting step. A determination step of applying the calculation and calculating the hash value, a determination step of determining whether or not the predetermined information decrypted in the processing of the decryption step and the hash value calculated in the processing of the computation step match, and a determination step When it is determined that the given information and the hash value match in the process of
And an execution step of executing processing by the script extracted by the first extraction step.

A second program of the present invention is a first extraction for extracting a script added as an attachment file to a mail in association with a mail opening instruction to a computer which controls an information processing device for receiving the mail. Steps,
A second extraction step of extracting predetermined encrypted information from the script extracted by the processing of the first extraction step, and decrypting the predetermined encrypted information extracted by the processing of the second extraction step And a calculation step of applying a hash function to the script extracted in the process of the first extraction step to calculate a hash value, predetermined information decrypted in the process of the decryption step, and a calculation step of the calculation step. The determination step of determining whether the hash values calculated in the process match, and if the determination information process determines that the predetermined information and the hash value match, depending on the script extracted in the first extraction step, And an execution step for executing the process.

A first information processing apparatus and method of the present invention,
And in the program, the hash function is applied to the created script, the hash value is calculated,
The hash value is encrypted using a predetermined key,
The encrypted hash value is embedded in the script.

A second information processing apparatus and method of the present invention,
Also, in the program, the script added as an attachment file to the email is extracted in synchronization with the instruction to open the email, and the encrypted predetermined information is extracted from the script, and the extracted encrypted predetermined Information is decrypted, the hash function is applied to the extracted script, the hash value is calculated, it is determined whether the predetermined decrypted information and the calculated hash value match, and it is determined that they match. If so, the process by the script is executed.

[0019]

1 is a diagram showing an embodiment of a mail transmitting / receiving system according to the present invention. PDA (Perso
nal Digital Assistant) 1-1 is a cradle 2-1
And is connected to the personal computer 3-1 via the cradle 2-1.

The PDA 1-1 includes a cradle 2-1, a personal computer 3-1, the Internet 4, mail servers 5-1 and 5-2, and a DNS (Domain Name Sys).
tem) Send mail to PDA1-2 via servers 6-1 and 6-2. When receiving the mail, the PDA 1-2 extracts the script when the mail contains a script (for example, a script described in Java (R)), and executes the extracted script.

The PDA 1-2 is mounted on the cradle 2-2 and is connected to the personal computer 3-2 via the cradle 2-2.

The PDA 1-2 is connected to the PDA 1-1 via the cradle 2-2, personal computer 3-2, Internet 4, mail servers 5-1 and 5-2, and DNS servers 4-1 and 6-2. send mail. PDA
When the mail is received, 1-1 extracts the script and executes the script when the mail contains the script.

The cradle 2-1 is a USB (Universal Ser
ial bus) or serial communication based on a standard such as RS-232-C, and is connected to the PDA 1-1 and the personal computer 3-1. Cradle 2-1 is PDA1-1
A terminal for connecting to the personal computer 3-1 and a cable for connecting to the personal computer 3-1 are provided, and mails are transmitted and received between the mounted PDA 1-1 and the personal computer 3-1. Also, cradle 2-1
Supplies power to the attached PDA 1-1.

The personal computer 3-1 is connected to the PDA 1-1 via the cradle 2-1 and to the Internet 4 via a public telephone line (not shown), an Internet connection service provider, etc. There is. The personal computer 3-1 sends the mail supplied from the PDA 1-1 to the mail server 5-1 via the Internet 4, and also sends the mail received from the mail server 5-1 to the PDA 1-1.

Cradle 2-2 is USB or RS-232-C
It is connected to the PDA 1-2 and the personal computer 3-2 by serial communication based on such standards. The cradle 2-2 is provided with a terminal for connecting to the PDA 1-2, a cable for connecting to the personal computer 3-2, etc., and is used for sending mails between the PDA 1-2 and the personal computer 3-2. Send and receive. Also, the cradle 2-2 is attached to the PDA 1
Supply power to -2.

The personal computer 3-2 is connected to the PDA 1-2 via the cradle 2-2 and to the Internet 4 via a public telephone line (not shown), an Internet connection service provider, etc. There is. The personal computer 3-2 transmits the mail supplied from the PDA 1-2 to the mail server 5-2 via the Internet 4, and also transmits the mail received from the mail server 5-2 to the PDA 1-2.

The mail server 5-1 is the Internet 4
When a mail is received from the PDA 1-1 or 1-2 via the, and the destination domain of the received mail does not correspond to itself, the mail is transferred to another mail server, for example, the mail server 5-2. . The mail server 5-1
When the mail transferred from the mail server 5-2 is received via the Internet 4 and the destination domain of the received mail does not correspond to itself, the mail is transferred to another mail server (not shown).

The mail server 5-1 is the Internet 4
When the domain of the destination of the mail received from the PDA 1-1 or 1-2 or the mail server 5-2 via the server corresponds to itself, the received mail is stored in a mailbox called spool.

The mail server 5-2 is the Internet 4
When a mail is received from the PDA 1-1 or 1-2 via the, and the destination domain of the received mail does not correspond to itself, the mail is transferred to another mail server, for example, the mail server 5-1. . The mail server 5-2 is
When the mail transferred from the mail server 5-1 is received via the Internet 4 and the domain of the destination of the received mail does not correspond to itself, the mail is transferred to another mail server.

The mail server 5-2 is the Internet 4
When the domain of the destination of the mail received from the PDA 1-1 or 1-2 or the mail server 5-1 via the server corresponds to itself, the received mail is stored in a mailbox called spool.

The DNS server 6-1 is the PDA 1-1 or 1
-2, when the host name is received from the mail server 5-1 or 5-2, the IP (Inte
rnetProtocol) Send the address to the person who sent the host name.

The DNS server 6-1 is the mail server 5-1.
Alternatively, when the domain name is received from 5-2, the host name of the mail server (for example, the mail server 5-1 or 5-2) corresponding to the received domain name is transmitted to the other party.

The DNS server 6-2 is the PDA 1-1 or 1
-2, when the host name is received from the mail server 5-1 or 5-2, the IP address corresponding to the received host name is transmitted to the partner who has transmitted the host name.

The DNS server 6-2 is the mail server 5-1.
Alternatively, when the domain name is received from 5-2, the host name of the mail server (for example, the mail server 5-1 or 5-2) corresponding to the received domain name is transmitted to the other party.

Hereinafter, when it is not necessary to individually distinguish the PDA 1-1 or 1-2, they are simply referred to as PDA 1. Hereinafter, when it is not necessary to individually distinguish the cradle 2-1 or 2-2, the cradle 2 is simply referred to as the cradle 2. Hereinafter, when it is not necessary to individually distinguish the personal computer 3-1 or 3-2, the personal computer 3-1 or 3-2 is simply referred to as the personal computer 3.

Next, transmission / reception of mails via the Internet 4 will be described.

The mechanism for sending or receiving a mail via the Internet 4 is very similar to the mechanism for a mail delivering a letter such as a postcard. In the case of mail, 1. Write a letter, 2. Post to the post, 3. 3. Transfer between post offices. One letter arrives at the other party through the four steps of delivering to the mailbox.

In the case of mail via the Internet 4, 1. Write an email on the email sending / receiving program,
2. 2. Press the send button of the email send / receive program.
3. Transfer between mail servers After the four steps of pressing the receive button of the email send / receive program,
An email arrives at the other party.

The mail sending / receiving program is a program for writing a mail and sending it to the other party, or receiving the mail sent by the other party. The mail transmission / reception program is also called a mailer and has a function corresponding to a post and a mail box.

Most mail sending / receiving programs have an editor function for displaying mail on the screen or writing mail. A user operates a mail sending / receiving program to send or receive a mail.

As a typical mail transmission / reception program,
Microsoft's Outlook Express (trademark), Qualcomm's Eudora Pro (trademark), free software such as Becky! Internet Mail or Al-Mail 32.

The mail server has a role of a post office, so to speak. The mail server receives the mail sent by the mail sending / receiving program and sends the mail to the mail sending / receiving program. As a typical mail server program,
Examples include Sendmail (trademark) of Sendmail, Inc. of the United States.

The mail server has three main roles. First, the email received from the email sending / receiving program is
Properly send to another mail server. Second
Is to organize and manage mail received from other mail servers by destination (user). Thirdly, the managed mail is sent to the mail sending / receiving program in response to a request from the mail sending / receiving program.

The procedure of the process of sending a mail to the mail server by the mail sending / receiving program is different from the process of the process of sending a mail to the mail sending / receiving program by the mail server, and the communication procedure is different.

The communication procedure is called a protocol. The mail sending / receiving program sends the mail to the mail server, and the mail server sends the mail to the mail server.
sfer Protocol) is widely used.

POP3 (Post Office) is used as processing for the mail sending / receiving program to receive mail from the mail server.
Protocol Version3) is widely used.

In the mail server, the port corresponding to SMTP and the port corresponding to POP3 are different. When sending mail, the mail sending / receiving program communicates with the mail server via the port corresponding to SMTP,
When receiving mail, it communicates with the mail server via the port corresponding to POP3.

In the case of mail, a letter sent from a foreign country is postmarked for each country in which it passes. Similarly, the mail is also postmarked.

When a mail is transmitted, postmark information is added one after another at the beginning of the body of the mail every time it passes through the mail server. This postmark information is called a header because it is attached to the head.

The header is roughly composed of three blocks. A block attached by the mail transmission / reception program is arranged in the lowermost portion (a portion close to the text), and a block attached by the mail server is arranged in the two portions above it.

The header stores newer information at the top.

The header information added by the mail transmission / reception program is composed of information similar to the address of a letter. The sender's mail address is stored in From, the recipient's mail address is stored in To, and the subject is stored in Subject.

Of the blocks attached by the mail server, Re
A time stamp is stored in ceived. form stores the name of the passed mail server.

The mail server sends this
Add Received block. Therefore, by confirming the description of the block of Received from bottom to top, it is possible to know the mail server through which the mail has passed.

Next, the setting of the mail transmission / reception program will be described. The information that must be set correctly in order to send mail is the e-mail address corresponding to the mail sending / receiving program, and the host name of the mail server corresponding to SMTP.

The electronic mail address corresponding to the mail transmission / reception program is the sender address corresponding to the sender name. When the e-mail address corresponding to the mail transmission / reception program is not set, the recipient of the mail cannot know the sender, and when the destination is unknown, the mail cannot be sent back.

The mail sending / receiving program inserts the electronic mail address corresponding to the mail sending / receiving program in the From line in the header. The e-mail address corresponding to the mail sending / receiving program is also used as a destination when the other party writes a reply. Depending on the mail transmission / reception program, the recipient of the reply can be changed by setting the reply address item.

The host name of the mail server corresponding to SMTP is set to the host name of the mail server to which the mail sending / receiving program sends mail. When sending a mail, the mail sending / receiving program sends the mail to the mail server based on the host name of the mail server corresponding to SMTP. The host name is described as, for example, mailserver.so-net.ne.jp.

The electronic mail address and host name are written based on the domain name. In the domain name, the country name, the type of organization, and the company name are represented by connecting “.”. In the domain name, the larger the section, the later it is arranged.

The e-mail address is the name of the user,
It is written by adding "@" as a delimiter and connecting the domain name.

The host name is represented by adding "." As a delimiter to the server name and connecting the domain name.

The electronic mail address or host name is a unique mail address or host name as described above.

Uppercase and lowercase letters are used for domain names of electronic mail addresses and host names, but they are not distinguished.

Next, the sending of mail to the mail server by the mail sending / receiving program will be described. The mail sending / receiving program must acquire the IP address corresponding to the host name before sending the mail. The IP address is described by a combination of numbers and ".", Such as 192.168.0.1.

DNS is a system for converting a host name into an IP address. Internet 4 has several DNs
S server is installed. When you send the host name to one of the DNS servers, the DNS server returns the IP address corresponding to the host name.

For example, the DNS server 6-1 of FIG. 1 records the IP address aaaa in association with the host name A.

The mail sending / receiving program uses the mail server's I
Ask for your P address.

Next, the procedure for sending a mail from the mail sending / receiving program to the mail server will be described. The mail sending / receiving program and the mail server send mail from the mail sending / receiving program to the mail server according to the SMTP procedure.

The procedure of SMTP is TCP (Transmission Control
l Protocol) setup, mail server call, preparation for sending, notification of recipient, sending of text, confirmation of completion,
And TCP termination processing. The process of calling the mail server, preparing for sending, notifying the destination, sending the text, and confirming the end are all composed of a request from the mail sending / receiving program and a reply from the mail server.

In the SMTP processing, the mail transmission / reception program and the mail server communicate with each other by the command statement and the reply code. For example, the command statement “RCPT from:
"y@so-net.ne.jp", RCPT is a command to notify the destination of the mail, and the destination of the mail is y@so-net.ne.ne.
It is jp.

In the reply code, for example, "Yes"
250. Explaining some of the reply codes, 251
Indicates "No such user", 450
Indicates "Mailbox is in use", 451
Indicates "Abended with an error", 452
Indicates "insufficient resources for processing", 501 indicates "incorrect command syntax", 502 indicates "command not available", 550
Indicates "mailbox does not exist".

The mail has a simultaneous broadcast function. The broadcast function is a function that sends emails with the same text to any number of people.

For example, if a plurality of mail addresses are entered in the To line of the header, the mail send / receive program will
The process of transmitting the PT command is repeated for each address described in the email address.

Incidentally, Cc (carbon copy) line or B
Broadcasting can also be done by using a dedicated header such as a cc (blind carbon copy) line.

When a mail is sent using the Cc line or the Bcc line, the other party who receives the mail knows that a copy of the mail has been received because his address is not described in the To line of the header. be able to.

When a mail is sent using the Cc line,
The email address of the other party is stored in the header.
When a mail is sent using the Bcc line, the mail send / receive program deletes the Bcc line from the header after the process of sending the RCPT command and sends the body. Bcc
Sending an e-mail using a line is effective when you do not want to let the other party know the destination that you have broadcast.

Next, a process in which the mail server searches for a mail server near the destination and transfers the mail server will be described. The process of forwarding mail from the mail server to the mail server is
It is executed according to the SMTP procedure.

In the process of transferring a mail from the mail server to the mail server, the mail server transmitting the mail cuts out the domain name from the destination of the mail and sends the cut-out domain name to the DNS server.

Since the DNS server records the relationship between the domain name and the host name of the mail server as an MX record, the host name of the mail server corresponding to the domain name is
Send to the mail server that sent the domain name.

For example, the DNS server 6-2 in FIG. 1 records the host name B in association with the domain name BBB.

The mail server receiving the host name sends the host name to the DNS server.

Since the DNS server records the relationship between the host name and the IP address as an A record, it sends the IP address corresponding to the host name to the mail server that sent the host name.

For example, the DNS server 6-2 in FIG. 1 records the IP address bbbb in association with the host name B.

The mail server which has transmitted the IP address transmits the mail to the mail server corresponding to the domain name of the mail destination, based on the above-mentioned SMTP procedure.

The mail server can broadcast the mail using the mailing list. When using the mailing list to broadcast mail, the alias function is used.

A mail server using the alias function groups a plurality of addresses in advance and records them corresponding to a predetermined mail address (representative address). Upon receiving the mail addressed to the representative address, the mail server resends a copy of the mail to all of the plurality of addresses recorded corresponding to the representative address.
The mail server sends mails to registered mail addresses one after another without rewriting the header.

The mail server corresponding to the domain name stores the received mail in the mail box called spool. The mail server manages mail for each user, and delivers the mail when the receive button of the mail sending / receiving program of the user corresponding to the destination is pressed.

The mail server does not send mail to the mail sending / receiving program based on SMTP because the device executing the mail sending / receiving program may not be operating or may not be connected to the Internet 4. Is.

The mail server sends a mail to the mail sending / receiving program based on POP3. The procedure for POP3 is TC
P setup, mail server call, user authentication, check the contents of the mailbox, check the number of incoming calls,
It consists of the processing of receiving the text, requesting deletion, confirming completion, and ending TCP. Calling the mail server, authenticating the user, checking the contents of the mailbox, checking the number of incoming calls, receiving the text, requesting deletion, and confirming the end are all requests from the mail sending / receiving program and the reply from the mail server. Composed of.

The command sentence and reply code in POP3 are different from the command sentence and reply code in SMTP.

In POP3, unless the user is authenticated by the user ID and password registered in advance in the mail server, the mail receiving process is not executed.

2 to 4 are views for explaining the appearance of the PDA 1. FIG. 2 is a perspective view of the PDA 1 when gripped. FIG. 3 is a perspective view of the PDA 1 mounted on the cradle 2. FIG. 4 is a front view of the PDA 1.

The case of the PDA 1 is formed in a size that can be held and operated with one hand. A slot into which a Memory Stick (trademark) 11 having a built-in semiconductor memory is inserted is provided above the PDA 1.

The PDA 1 is mounted on the cradle so that the lower surface of the PDA 1 and the upper surface of the cradle 2 are in contact with each other. On the bottom surface of PDA1, a USB (Universal
Serial Bus) port (not shown) and the like are provided.

The PDA 1 is provided with a display unit 21, keys 22, a jog dial 23 and the like.

The display unit 21 is composed of a thin display device such as a liquid crystal display device and displays an image such as an icon, a thumbnail, or a text. On the upper side of the display unit 21,
A touch pad is provided. By pressing the touch pad with a finger or a pen, predetermined data or operation instructions are input to the PDA 1.

The key 22 is composed of input keys and the like.
The selection of the icon or the thumbnail displayed on the display unit 21 is input.

The jog dial 23 is used for inputting selection of an icon or thumbnail displayed on the display unit 21 in response to a rotating operation or a pressing operation on the main body side.

FIG. 5 is a diagram for explaining the structure of the PDA 1. The CPU (Central Processing Unit) 31 includes the oscillator 3
Flash ROM in synchronization with the clock signal supplied from 2
(Read-only Memory) 33 or EDO DRAM (Extended D
various programs such as an operating system stored in the ata Out Dynamic Random-Access Memory) 34 or a developed application program are executed.

The Flash ROM 33 is an EEPROM (Electrically
Erasable Programmable Read-Only Memory), which is a type of flash memory.
Stores basically fixed data of the program and calculation parameters used by. EDO DRAM34 is CPU
The program used in the execution of 31 and the parameters that change appropriately in the execution are stored.

Memory Stick Interface 35
Reads the data from the Memory Stick 11 mounted on the PDA 1 and writes the data supplied from the CPU 31 to the Memory Stick 11.

The USB (Universal Serial Bus) interface 36 is connected to the drive 5 which is a connected USB device in synchronization with the clock signal supplied from the oscillator 37.
Input data or program from 1 and CP
The data supplied from U31 is supplied to the drive 51. The USB interface 36 inputs data or a program from the connected cradle 2 which is a USB device in synchronization with the clock signal supplied from the oscillator 37, and supplies the data supplied from the CPU 31 to the cradle 2.

The drive 51 reads the data or program recorded in the mounted magnetic disk 61, optical disk 62, magneto-optical disk 63, or semiconductor memory 64, and reads the data or program,
CPU connected via USB interface 36
31 or EDO DRAM 34. Also, drive 5
Reference numeral 1 is a mounted magnetic disk 61, optical disk 6
2. The data or program is recorded in the magneto-optical disk 63 or the semiconductor memory 64.

The Flash ROM 33, EDO DRAM 34, memory stick interface 35, and USB interface 36 are connected to the CPU 31 via an address bus and a data bus.

The display section 21 is connected to the CPU 31 via the LCD bus.
Receives data from, and displays images or characters corresponding to the received data. The touch pad control unit 38
When the touch pad provided on the upper side of the display unit 21 is operated, data corresponding to the operation (for example, indicating the touched coordinates) is received from the display unit 21, and a signal corresponding to the received data is transmitted via the serial bus. Is supplied to the CPU 31 via.

EL (Electroluminescence) driver 39
Controls the brightness of the display of the display unit 21 by operating the electroluminescent element provided on the back side of the liquid crystal display unit of the display unit 21.

The infrared communication unit 40 uses a UART (Universal as
CPU31 via the synchronous receiver-transmitter)
Infrared is used as a medium to transmit the data received from the device to another device (not shown), and the infrared device transmits the data transmitted from the other device to the CPU 31. Further, the PDA 1 can communicate with other devices via the UART.

The voice reproducing unit 42 is composed of a speaker, a voice data decoding circuit, and the like, and decodes and reproduces voice data stored in advance or voice data received via the Internet 4. And output audio. For example, the audio reproduction unit 42 reproduces the audio data supplied from the CPU 31 via the buffer 41,
Output the voice corresponding to the data.

The key 22 is composed of input keys, etc.
It is operated by the user when inputting various commands to U31.

The jog dial 23 supplies the CPU 31 with data corresponding to a rotating operation or a pressing operation on the main body side.

The power supply circuit 43 is provided with a battery 52 mounted or an AC (Alternating current) connected.
The voltage of the power supply supplied from the adapter 53 is converted, and the power is supplied to each of the CPU 31 to the sound reproducing unit 42.

Next, the mail transmitted by PDA1-1 is PDA1.
-2 will be described with reference to FIG. The PDA 1-1 is a DN via the cradle 2-1, personal computer 3-1, and Internet 4.
The host name of the mail server 5-1 is transmitted to the S server 6-1. The DNS server 6-1 uses the PDA 1-1 as the IP address of the mail server 5-1 stored in the A record in association with the host name received via the Internet 4.
Send to.

Based on the IP address of the mail server 5-1 received from the DNS server 6-1, the PDA 1-1 sends an SMTP (Simple Mail) via the cradle 2-1, the personal computer 3-1, and the Internet 4. Transfer Pro
to the mail server 5-1 based on the procedure
Send to.

The mail server 5-1 confirms the destination of the received mail, and if the domain name of the destination of the mail does not correspond to its own domain, it sends the domain name to the DNS server 6-2 via the Internet 4. Send. The DNS server 6-2 transmits the host name of the mail server 5-2 stored in the MX record to the mail server 5-1 in association with the received domain name via the Internet 4.

The mail server 5-1 is the Internet 4
Via the Internet, the host name of the mail server 5-2 corresponding to the destination of the mail received from the DNS server 6-2 is transmitted to the DNS server 6-2. The DNS server 6-2 transmits the IP address of the mail server 5-2 stored in the A record in association with the received host name to the mail server 5-1 via the Internet 4.

The mail server 5-1 is the Internet 4
Based on the received IP address, the mail is transferred to the mail server 5-2 based on the SMTP procedure. The mail server 5-2 confirms the destination of the received mail,
If the destination domain name corresponds to your domain,
Store mail in a mailbox called a spool.

The PDA 1-2 sends the host name of the mail server 5-2 to the DNS server 6-2 via the cradle 2-2, personal computer 3-2, and Internet 4 Internet 4. The DNS server 6-2 is
The IP address of the mail server 5-2 corresponding to the received host name is transmitted to the PDA 1-2 via the Internet 4.

The PDA 1-2 receives the mail server 5-
Based on the IP address of No. 2, via the cradle 2-2, the personal computer 3-2, and the Internet 4, a mail is requested to the mail server 5-2 based on the procedure of POP3 (Post Office Protocol Version3). PDA
1-2 receives a mail from the mail server 5-2 via the cradle 2-2, the personal computer 3-2, and the Internet 4 based on the procedure of POP3.

FIG. 7 is a diagram for explaining a program executed by the PDA 1 that sends mail. An operating system (hereinafter referred to as OS) 101 is a program that controls basic operations of the PDA 1.

The driver 102-1 is a program for controlling the display on the display section 11. The driver 102-2 is
It is a program for controlling the operation of the touch pad control unit 38. The driver 102-3 is a program that controls the reproduction of the sound of the sound reproducing unit 42. Driver 102-4
Is a program that executes a process corresponding to the input of the jog dial 23.

The library 103 stores a plurality of processing routines used by application programs such as the mail transmission / reception program 104.

The mail transmission / reception program 104 includes a cradle 2-1 or 2-2 and a personal computer 3.
-1 or 3-2, and a program for sending or receiving a mail via the Internet 4.

The structure of the program shown in FIG. 7 is the same as the structure of the program of the conventional device for sending and receiving mail.

FIG. 8 is a diagram for explaining a program executed by the PDA 1 that sends mail or receives mail. When receiving the mail from the mail server 5-2, the mail transmission / reception program 104 causes the display unit 11 to display, for example, the image shown in FIG. When displaying the received mail, the mail transmission / reception program 104 supplies the received mail to the interpreter 106.

The library 105 includes the interpreter 106.
Stores the routines used by when executing a script.

The interpreter 106 is a program plugged into the mail transmission / reception program 104, extracts the script contained in the mail, and executes the extracted script. For example, interpreter 106
In response to the execution of the script, the driver 102-1
A predetermined image is displayed on the display unit 11, and the driver 102-
In step 3, the audio reproduction unit 42 reproduces a predetermined audio.

The interpreter 106 causes the drivers 102-1 to 102-4 corresponding to the display unit 11 or the sound reproducing unit 42 to execute display or sound reproduction. Therefore, the interpreter 106 may change the display unit depending on the model of the PDA 1. 11 or even if the sound reproducing unit 42 is different, the display or sound reproduction by the interpreter 106 is executed reliably and accurately.

Further, the interpreter 106 has the display unit 11
Alternatively, since the drivers 102-1 to 102-4 corresponding to the device such as the audio reproducing unit 42 are caused to perform processing such as display or audio reproduction, various devices to be operated corresponding to the execution contents of the script are set in the PDA 1. Even if incorporated, control of the device by interpreter 106 is performed reliably and accurately.

The mail transmission / reception program 104 is
When the mail to be displayed includes a script, the interpreter 106 may be activated and the library 105 may be loaded.

FIG. 10 is a diagram for explaining a more detailed structure of the interpreter 106. The interpreter 106 includes a syntax analysis module 121, an execution module 122, and an output module 123.

For example, as shown in FIG. 11, the syntax analysis module 121 receives the mail 151 from the mail sending / receiving program 104 when the mail sending / receiving program 104 tries to display the mail 151, and includes it in the received mail 151. The extracted script is extracted, and the extracted script is supplied to the execution module 122.

FIG. 12 is a diagram showing an example of the structure of the mail 151 transmitted or received by the PDA 1. When the script is stored, the mail 151 stores the script after the body of the mail. If the stored script requires data, the mail 151 stores the data required for execution of the script by the interpreter 106, following the script.

The syntax analysis module 121 uses the mail 15
When the data is stored together with the script in 1, the data is extracted together with the script and the extracted data is supplied to the execution module 122 together with the script.

FIG. 13 is a diagram for explaining the flow of processing of the interpreter 106 when the mail 151 stores a script. When the syntax analysis module 121 extracts the script from the mail 151, the syntax analysis module 121 supplies the extracted script to the execution module 122.

The execution module 122 which receives the supply of the script executes the script. Output module 12
3 displays an image, outputs a voice, or outputs data 171 according to the result of the execution of the script.
Are stored in the EDO DRAM 34, for example.

On the other hand, when the syntax analysis module 121 does not extract the script from the mail 151 (when the script is not included in the mail 151), FIG.
As shown in, the syntax analysis module 121 causes the mail transmission / reception program 104 to execute the subsequent processing, and normal mail processing is executed. At this time, the mail transmission / reception program 104 supplies the text data 191 corresponding to the text of the mail 151 to the driver 102-1. The driver 102-1 displays the text of the mail 151 on the display unit 11 based on the text data 191.

FIG. 15 shows a mail 151 for executing Othello.
It is a figure which shows the example of. In the example shown in FIG. 15, the mail 151 is composed of a text and a script. The script included in the mail 151 shown in FIG. 15 is application / x-emma described by the MIME (Multi Purpose Internet Mail Extension) method.

In the mail 151 shown in FIG. 15, "T
O: ”Someone” someone@sony.co.jp ”thru“ Othello 2
It is an eye. “Corresponds to the text,” ------ = _ NextPart_000
_0011_01BFA9E7.2EE28580 ”or” ---- Next_Part (Wed_A
pr_19_11: 42: 48_2000_705) ---- ”corresponds to the script.

FIG. 16 is a diagram schematically showing the execution of the script. Script execution is classified into an input part and an execution part.

In the input section, the syntax analysis module 1
21, the script is extracted from the mail 151.

The execution unit further includes a data input unit, a process execution unit, and an output unit. In the data input unit, the execution module 122 is, for example, the driver 1
02-1 displays an image for input on the display unit 11, and causes the driver 102-2 to control the input from the touch pad control unit 38.

For the input in the data input section, the execution module 122 uses, for example, the tablet, the key 22, the jog dial 23, the sensor, the memory stick interface 35, the external keyboard, the modem, the USB interface 36, the infrared communication section 40, or the drive 5.
It is executed by controlling the driver corresponding to 2 or the like.

In the processing execution unit, the execution module 12
2 executes the processing logic of the script.

In the output section, the output module 123
Corresponds to the processing in the processing execution unit, for example, causes the driver 102-1 to display the image of the processing result on the display unit 11, and causes the driver 102-3 to output the audio of the processing result to the audio reproduction unit 42. Output.

The output from the output module 123 is performed by the output module 123, for example, the display unit 11, the modem, the voice reproducing unit 4.
2. It is executed by controlling a driver corresponding to the memory stick interface 35, the USB interface 36, the infrared communication section 40, the drive 52, or the like.

FIG. 17 is a diagram showing an example of a script for executing the Othello game. When the script shown in FIG. 17 is read by the interpreter 106, the execution module 122 activates the onload () method, and the show () method is used to display the Othello board and the frame at that time, as shown in the example of FIG. It is displayed on the display unit 11.

As shown in the example in FIG. 19, when the user inputs a new hand, the execution module 122 acquires the coordinates on the Othello board where the new hand is input by the ontap () method. The execution module 12 determines by the check () method whether or not the coordinates corresponding to the new hand satisfy the requirements specified in the Othello rule, and determines that the coordinates specified in the Othello rule are not satisfied. If confirmed, the confirm () method notifies that there is an error (displays an error message on the display unit 11) and turns on.
Repeat execution of tap () method.

If it is determined that the new move satisfies the requirements specified in Othello's rule, execution module 1
As shown in the example of FIG. 20, 22 updates the surface of the frame by the update () method. The output module 123
As shown in the example in Figure 21, the sendmail () method
The process of sending the mail to the other party is executed, and the process ends with the exit () method.

Next, with reference to the flowchart of FIG. 22, the mail transmission process by the PDA 1 which executes the mail transmission / reception program 104 will be described. In step S11, the mail send / receive program 104 causes the USB interface 36 to send the host name corresponding to the mail server 5-1 to the DNS server 6-1 via the cradle 2, the personal computer 3, and the Internet 4, and the DNS The IP address corresponding to the mail server 5-1 is acquired from the server 6-1.

The processing of steps S12 to S18 is executed based on, for example, the SMTP procedure.

In step S12, the mail transmission / reception program 104 causes the USB interface 36 to specify the IP address via the cradle 2, the personal computer 3, and the Internet 4, and to connect to the mail server 5-1. In step S13, the mail transmission / reception program 104 causes the USB interface 3
6 causes the mail server 5-1 to be called via the cradle 2, the personal computer 3, and the Internet 4 (calls a mail server program (for example, sendmail (trademark) or the like) executed by the mail server 5-1).

In step S14, the mail transmission / reception program 104 causes the USB interface 36 to prepare the mail server 5-1 for mail transmission (procedure for transmitting mail to the mail server program executed by the mail server 5-1). Notify that you will execute). In step S15, the mail transmission / reception program 104
Notifies the mail interface 5-1 of the destination (mail address) of the mail to be transmitted to the USB interface 36.

In step S16, the mail send / receive program 104 causes the USB interface 36 to send the mail to the mail server 5-1. Step S17
At, the mail transmission / reception program 104 causes the USB interface 36 to confirm the end of processing with the mail server 5-1.

In step S17, the mail transmission / reception program 104 causes the USB interface 36 to disconnect the connection with the mail server 5-1 and the process ends.

As described above, the PDA 1 uses the mail server 5-
You can send mail to 1.

The process of forwarding the mail to the mail server 5-2 by the mail server 5-1 is the same as the process of sending the mail except the process of acquiring the host name corresponding to the destination of the mail. Is omitted.

Next, with reference to the flowchart of FIG. 23, the mail reception process by the PDA 1 which executes the mail transmission / reception program 104 will be described. In step S31, the mail transmission / reception program 104 causes the USB interface 36 to transmit the host name corresponding to the mail server 5-2 to the DNS server 6-2 via the cradle 2, the personal computer 3, and the Internet 4, and the DNS server 6-2 The IP address corresponding to the mail server 5-2 is acquired from the server 6-2.

The processes of steps S32 to S40 are executed based on the procedure of POP3, for example.

In step S32, the mail transmission / reception program 104 causes the USB interface 36 to specify the IP address via the cradle 2, the personal computer 3, and the Internet 4 and connect to the mail server 5-2. In step S33, the mail transmission / reception program 104 causes the USB interface 3
6 to call the mail server 5-2 via the cradle 2, the personal computer 3, and the Internet 4.

In step S34, the mail transmission / reception program 104 causes the USB interface 36 to display the PDA1
The user ID and password of the user are transmitted to the mail server 5-2 via the cradle 2, the personal computer 3, and the Internet 4, and the mail server 5-2 is caused to execute the user authentication process.

In step S35, the mail transmission / reception program 104 causes the USB interface 36 to confirm the contents of the mailbox (where the mail addressed to the user of the PDA 1 is stored) to the mail server 5-2.

In step S36, the mail send / receive program 104 causes the USB interface 36 to display the PDA1
The number of incoming mails addressed to the user is transmitted to the mail server 5-2, and the number of incoming mails is received.

In step S37, the mail send / receive program 104 causes the USB interface 36 to send the mail addressed to the user of the PDA 1 to the mail server 5-2 and receive the sent mail. In step S38, the mail transmission / reception program 104 causes the USB interface 36 to request the mail server 5-2 to delete the mail addressed to the user of the PDA 1. Mail server 5-2
Deletes the mail addressed to the user of PDA1.

In step S39, the mail transmission / reception program 104 causes the USB interface 36 to confirm the end of processing with the mail server 5-2.

In step S40, the mail transmission / reception program 104 causes the USB interface 36 to disconnect the connection with the mail server 5-2, and the process ends.

As described above, the PDA 1 is the mail server 5-
From 2, the mail addressed to the user of PDA 1 can be received.

Next, the mail transmission / reception program 104 and the interpreter 106, which are executed when the mail transmission / reception program 104 displays the received mail, are executed.
The processing of the PDA1 script will be described with reference to the flowchart of FIG. In step S51, the mail transmission / reception program 104 reads the received mail 151.

In step S52, the mail transmission / reception program 104 determines whether or not the read mail 151 includes a script. If it is determined that the script is included, the process proceeds to step S53 and the interpreter 106 is executed. to start. Mail send / receive program 1
04 interprets the read mail 151 into the interpreter 106
Supply to.

Note that the interpreter 106 may be activated in advance together with the mail transmission / reception program 104.

At step S54, the interpreter 1
The syntax analysis module 121 of 06 extracts the script included in the mail 151 based on the description of the mail 151. In step S55, the execution module 122 of the interpreter 106 executes the extracted script.

At step S56, the interpreter 1
The output module 123 of 06 executes display or audio output processing according to the result of script execution. In step S57, the mail transmission / reception program 104 ends the interpreter 106, and the process ends.

If it is determined in step S51 that the script is not included, the process corresponding to the script is not necessary, so steps S53 to S5.
The process of 7 is skipped and the process ends.

As described above, when the mail 151 contains a script, the PDA 1 activates the interpreter 106 and executes the process corresponding to the script.

The process of step S52 is performed by the syntax analysis module 12 of the interpreter 106 which has been started in advance.
1 may be executed.

Next, the process of Othello, which is a more specific example of script execution, will be described with reference to the flowchart of FIG. In step S71, the mail transmission / reception program 104 reads the received mail 151.

In step S72, the mail transmission / reception program 104 activates the interpreter 106. In step S73, the output module 123 of the interpreter 106 causes the display unit 11 to display the Othello board and frames.

In step S74, the execution module 122 determines whether or not a new hand has been input. If it is determined that a new hand has not been input, the execution module 122 continues until step S74. Return to and repeat the determination process.

If it is determined in step S74 that a new hand has been input, the process proceeds to step S75, in which the execution module 122 reads the coordinates of the new hand (indicating the position on the Othello board). In step S76, the execution module 122 determines whether or not the new hand satisfies the requirements specified in the rules of Othello, and it is determined that the new hand satisfies the requirements specified in the rules of Othello. If so, the process proceeds to step S77, and the top is placed at the position of the Othello board corresponding to the new hand.

In step S78, the execution module 122 updates the face of the frame, such as turning over a predetermined frame. In step S79, the output module 123
Causes the display unit 11 to display an Othello board and frames.

In step S80, the output module 123 makes the USB interface 36 communicate with the new hand. In step S81, the mail transmission / reception program 104 ends the interpreter 106, and the process ends.

If it is determined in step S76 that the new move does not satisfy the requirements specified in the rules of Othello, the process proceeds to step S82 and the output module 12
3 displays an error on the display unit 11 to notify the user of the error, and the procedure returns to step S74 to repeat the processing from the input of a new hand.

As described above, the PDA 1 executes the process of Othello based on the script included in the mail 151.

As described above, when the user tries to read the mail 151, the PDA 1 executes the action desired by the sender of the mail 151. Since the PDA 1 does not execute the script included in the mail 151 when the user does not read the mail 151, the processing load of the script can be minimized.

Since the PDA 1 can execute various processes corresponding to the description of the script only by executing the interpreter 106, the attached data can be compared with the case where the data is attached to the mail and transmitted. It is not necessary to store a large number of application programs corresponding to the types of.

Further, since the interpreter 106 executes the script, if the interpreter 106 is implemented securely, the process can be executed more safely than when the execution program attached to the mail is executed as it is. .

Next, a second embodiment of the mail transmitting / receiving system according to the present invention will be described.

FIG. 26 is a diagram showing the second embodiment of the mail transmitting / receiving system according to the present invention. Public network 2
02, PDA1- through the base stations 201-1 to 201-4, which are fixed wireless stations, which are respectively arranged in cells obtained by dividing a communication service providing area into desired areas.
1 or 1-2, or digital mobile phones with cameras 301-1 and 301-2 are connected.

The base stations 201-1 to 201-4 are the mobile radio stations PDA 1-1 and 1-2, and the camera-equipped digital mobile phones 301-1 and 301-2, respectively.
For example, W-CDMA (Wideband-Code Division Multiple Ac)
wireless connection by code division multiple access called cess),
Mobile radio stations PDA 1-1 and 1-2, and camera-equipped digital mobile phones 301-1 and 301-2
And, by using the frequency band of 2 GHz, large-capacity data can be transmitted at high speed at a data transfer rate of up to 2 Mbps.

The PDA 1-1 and 1-2, and the camera-equipped digital mobile phones 301-1 and 301-2 are
Since large-capacity data can be communicated at high speed with the base stations 201-1 to 201-4 by the W-CDMA system, not only voice calls but also various types of e-mail transmission / reception, simple homepage browsing, image transmission / reception, etc. Data communication may be performed.

Also, the base stations 201-1 to 201-4
Is connected to the public line network 202 via a wired line. The public line network 202 includes the Internet 4, a subscriber wired terminal device (not shown), a computer network,
And the corporate network is connected.

The access server 203 of the Internet service provider is connected to the public line network 202, and further connected to the content server 204 owned by the Internet service provider.

The content server 204 responds to a request from the wired subscriber terminal device, the PDA 1-1 or 1-2, or the digital mobile phone with camera 301-1 or 301-2, for example, content such as a simple home page. Compact HTML (Hypertext Markup Languag
e) Provide as a method file.

There are many WWW (World
Wide Web) servers 205-1 to 205-N are connected. WWW servers 205-1 to 205-N are TCP
(Transmission Control Protocol) / IP (Internet Protoc
ol) protocol, subscriber wired terminal device, PDA1
-1 and 1-2, and digital mobile phones with cameras 301-1 and 301-2.

Incidentally, the PDA 1-1 and 1-2, and the digital portable telephone set 301-1 and 301 with a camera are also provided.
-2 is 2Mbps from base stations 201-1 to 201-4
The base station 20 communicates using the simple transport protocol of
1-1 to 201-4, Internet 4, and
The WWW servers 205-1 to 205-N communicate with each other by TCP / IP.

[0195] The management control device 206 uses the subscriber line terminal device, PDA 1-1 and 1-2, and the camera-equipped digital mobile phone 301 via the public line network 202.
-1 and 301-2, and executes authentication processing or billing processing for the subscriber wired terminal device, PDA 1-1 and 1-2, and camera-equipped digital mobile phones 301-1 and 301-2.

Digital mobile phone with camera 301-1
And 301-2 send or receive a mail via the public line network 202 and the Internet 4 by the same processing as the PDA 1 described above. When the received mail includes a script, the digital mobile phones with cameras 301-1 and 301-2 activate the interpreter 106 to execute the script.

Hereinafter, the digital mobile phone 30 with a camera will be described.
When it is not necessary to distinguish 1-1 and 301-2 individually, they are simply referred to as a camera-equipped digital mobile phone 301.

Next, the external structure of the camera-equipped digital mobile phone 301 to which the present invention is applied will be described. As shown in FIG. 27, a camera-equipped digital mobile phone 301 is composed of a display section 302 and a main body 303, and is foldable by a hinge section 304 at the center.

The display section 302 has an antenna 305 for transmission and reception, which can be pulled out or stored in the upper left part. The camera-equipped digital mobile phone 301 has base stations 201-1 to 201-4, which are fixed wireless stations, via an antenna 305.
To send and receive radio waves to or from.

Further, the display section 302 has a camera section 306 which is rotatable in an angular range of about 180 degrees at the center of the upper end. The camera-equipped digital mobile phone 301 includes a camera unit 3
A desired image pickup target is imaged by the CCD camera 307 of 06.

The camera unit 306 is set to about 18 by the user.
When the display unit 302 is rotated by 0 degrees and positioned, as shown in FIG. 28, the display unit 302 is in a state in which the speaker 308 provided at the center on the back side of the camera unit 306 is located on the front side. As a result, the digital mobile phone with camera 301
Switches to the normal voice call state.

Further, a liquid crystal display 309 is provided on the front surface of the display section 302. Liquid crystal display 30
9 is the state of reception of radio waves, the remaining battery level, the destination name and telephone number registered in the telephone directory, the outgoing history, etc., the content of the email, the simple homepage, and the CCD camera 307 of the camera unit 306. Display images, etc.

On the other hand, the main body 303 has "0" on its surface.
Further, there are provided operation keys 310 such as a numeral key of “9”, a calling key, a redial key, a call end / power key, a clear key and an electronic mail key. Various instructions corresponding to the operation of the operation keys 310 are displayed on the digital mobile phone 3 with a camera.
01 is input.

A memo button 311 and a microphone 312 are provided below the operation keys 310 of the main body 303. When the memo button 311 is operated, the camera-equipped digital mobile phone 301 records the voice of the other party during the call. The camera-equipped digital mobile phone 301 collects the voice of the user during a call by the microphone 312.

Further, a rotatable jog dial 313 is provided above the operation keys 310 of the main body 303 in a state of slightly protruding from the surface of the main body 303. The camera-equipped digital mobile phone 301 has a jog dial 313.
Various operations such as a scrolling operation of a telephone directory list or an electronic mail displayed on the liquid crystal display 309, a page turning operation of a simple home page, or an image sending operation are executed in response to the turning operation for.

For example, the main body 303 selects a desired telephone number from a plurality of telephone numbers in the telephone directory list displayed on the liquid crystal display 309 in response to the user's rotating operation of the jog dial 313, and the jog dial 313 is activated. When pressed inward of the main body 303, the selected telephone number is confirmed, and the calling process is automatically performed to the confirmed telephone number.

A battery pack (not shown) is mounted on the back side of the main body 303, and when the call end / power key is turned on, power is supplied from the battery pack to each circuit unit to enable operation. Boot into state.

By the way, a memory stick slot 314 for mounting the removable memory stick 11 on the left side surface of the main body 303 is provided. When the memo button 311 is pressed, the digital mobile phone with camera 301 records the voice of the other party who is talking on the memory stick 11. The camera-equipped digital mobile phone 301 can send an e-mail,
The image taken by the simple homepage and the CCD camera 307 is recorded on the mounted Memory Stick 11.

The Memory Stick 11 is a type of flash memory card developed by Sony Corporation, the applicant of the present application. This Memory Stick 11
Is an EEPROM (Electrically Erasable and PROM) that is a non-volatile memory that is electrically rewritable and erasable in a compact and thin plastic case with a length of 21.5 x width 50 x thickness 2.8 [mm].
A flash memory device, which is a type of rogrammable read only memory), is stored, and various data such as images, voices, and music can be written and read through a 10-pin terminal.

Also, the Memory Stick 11 can be used even when the specifications of the built-in flash memory are changed due to the increase in capacity.
Adopted a unique serial protocol that can ensure compatibility with the equipment used, and a maximum writing speed of 1.5 [MB / S],
It achieves high-speed performance with a maximum read speed of 2.45 [MB / S], and a high reliability is secured by providing an erasure prevention switch.

Therefore, the camera-equipped digital mobile phone 30
Since the memory stick 1 is configured so that such a memory stick 11 can be mounted, it is possible to share data with other electronic devices via the memory stick 11.

As shown in FIG. 29, the camera-equipped digital mobile phone 301 has a power supply circuit section 352 and an operation input control section 353 with respect to a main control section 351 which controls the respective sections of the display section 302 and the main body 303. , Image encoder 3
54, camera interface 355, LCD (Liqu
id Crystal Display) control unit 356, image decoder 35
7, the demultiplexing unit 358, the storage / playback unit 363, the modulation / demodulation circuit unit 359, and the audio codec 360 are connected to the main bus 3.
The image encoder 354, the image decoder 357, the demultiplexing unit 358, the modulation / demodulation circuit unit 359, and the audio codec 360 are connected to each other via the synchronization bus 362.

[0213] The power supply circuit section 352 can operate the digital mobile phone 301 with a camera by supplying power to each section from the battery pack when the end / power key is turned on by the operation of the user. Boot into state.

The digital mobile phone 301 with a camera is
In the voice call mode, the voice signal collected by the microphone 312 is converted into digital voice data by the voice codec 360 under the control of the main control unit 351 including a PU, a ROM, a RAM, and the like. In the digital mobile phone 301 with a camera, the modulation / demodulation circuit unit 359 performs spread spectrum processing on digital audio data, and the transmission / reception circuit unit 3
Digital-analog conversion processing and frequency conversion processing are performed at 64 and then transmitted via the antenna 305.

[0215] Further, the digital mobile phone with camera 301
In the voice call mode, the received signal received by the antenna 305 is amplified and subjected to frequency conversion processing and analog-digital conversion processing, the modulation / demodulation circuit unit 359 performs spectrum despreading processing, and the voice codec 360 converts it into an analog voice signal. . The camera-equipped digital mobile phone 301 causes the speaker 308 to output audio corresponding to the analog audio signal.

Further, the digital mobile phone 30 with a camera
In the data communication mode, when transmitting an e-mail, 1 sends the text data of the e-mail input by operating the operation keys 310 and the jog dial 313 to the main control unit 351 via the operation input control unit 353.

The main control section 351 performs spread spectrum processing on the text data in the modulation / demodulation circuit section 359, performs digital-analog conversion processing and frequency conversion processing in the transmission / reception circuit section 364, and then transmits the text data to the base station via the antenna 305.

On the other hand, when the digital mobile phone with camera 301 receives an electronic mail in the data communication mode, the modulation / demodulation circuit unit 359 performs the spectrum despreading process on the received signal received from the base station CS3 via the antenna 305. Then, after restoring the original text data, L
It is displayed as an electronic mail on the liquid crystal display 309 via the CD control unit 356.

In the data communication mode, main controller 351 executes mail transmission / reception program 104 and interpreter 106 when transmitting or receiving an electronic mail.

Like the flexible printed wiring board 11, the LCD control portion 356 has the liquid crystal display 3 through the flexible printed wiring board having the panel ID setting portion.
09 is connected.

After that, the digital mobile phone 30 with a camera is attached.
It is also possible for 1 to record the e-mail received according to the operation of the user in the memory stick 11 via the storage / playback unit 363.

When transmitting image data in the data communication mode, the digital portable telephone set with camera 301 C
Image data captured by the CD camera 307 is supplied to the image encoder 354 via the camera interface unit 355.

[0223] Incidentally, the digital mobile phone with a camera 301
Is the CCD camera 3 when the image data is not transmitted.
It is also possible to directly display the image data captured in 07 on the liquid crystal display 309 via the camera interface unit 355 and the LCD control unit 356.

The image encoder 354 is the CCD camera 3
The image data supplied from 07 is, for example, MPEG
(Moving Picture Experts Group) 2 or MPEG
4 is converted into encoded image data by compression encoding by a predetermined encoding method such as 4 and the like, and the demultiplexing unit 35
Send to 8.

At the same time, the camera-equipped digital mobile phone 301 sends the sound collected by the microphone 312 during image pickup by the CCD camera 307 to the demultiplexer 358 via the sound codec 360 as digital sound data.

The demultiplexing unit 358 is connected to the image encoder 35.
Coded image data and audio codec 3 supplied from 4
The audio data supplied from 60 is multiplexed by a predetermined method, and the multiplexed data obtained as a result is modulated / demodulated circuit unit 35.
The spread spectrum processing is performed at 9, and the transmitting / receiving circuit unit 364 performs the digital-analog conversion processing and the frequency conversion processing, and then transmits through the antenna 305.

On the other hand, in the data communication mode, the digital mobile phone with camera 301 receives the data received from the base station via the antenna 305 when receiving the data of the moving image file linked to the simple homepage or the like, for example. The signal is subjected to spectrum despreading processing in the modulation / demodulation circuit unit 359, and the multiplexed data obtained as a result is sent to the demultiplexing unit 358.

The demultiplexing unit 358 separates the multiplexed data into coded image data and audio data, and the synchronization bus 362.
The encoded image data is supplied to the image decoder 357 and the audio data is supplied to the audio codec 360 via the.

The image decoder 357 generates reproduced moving image data by decoding the encoded image data by a decoding method corresponding to a predetermined encoding method such as MPEG2 or MPEG4, and this is reproduced via the LCD control section 356. It is supplied to the liquid crystal display 309. As a result, the camera-equipped digital mobile phone 301 displays, for example, moving image data included in a moving image file linked to a simple home page.

At this time, the audio codec 360 simultaneously
After converting the audio data into an analog audio signal, this is supplied to the speaker 308. As a result, the digital mobile phone with camera 301 reproduces the audio data included in the moving image file linked to the simple home page, for example.

Also in this case, as in the case of electronic mail, the camera-equipped digital mobile phone 301 records the received data linked to the simple home page or the like on the memory stick 11 through the storage / playback unit 363 by the operation of the user. It is possible.

The present invention is not limited to the PDA 1 and the digital mobile phone 301 with a camera, but it is a notebook type personal computer, a PHS (Personal Handyphone System) terminal device, or a car navigation system. It can be applied to all devices.

Next, a more detailed structure of the interpreter 106 will be described.

FIG. 30 is a diagram showing an example of a more detailed structure of the interpreter 106.

The mail syntax analysis unit 502, decoder 503, syntax analysis unit 505, data configuration unit 517, encoder 518, and mail generation unit 519 shown in FIG.
Corresponding to the parsing module 121.

The script interpreter 506 of FIG.
Authentication encryption unit 507, resource access manager 50
8 and the storage module 511 correspond to the execution module 122 of FIG.

The I / O (Input / Output) module 510 of FIG. 30 corresponds to the output module 123 of FIG.

The mail transmission / reception program 104 supplies the mail 151 to be opened to the mail syntax analysis unit 502 or acquires the mail 151 generated from the mail generation unit 519 via the mail transmission / reception program plug-in interface 501. To do.

The mail syntax analysis unit 502 analyzes the syntax of the mail 151 supplied from the mail transmission / reception program 104 via the mail transmission / reception program plug-in interface 501 and extracts a script and data from the mail 151. Email parser 502
Supplies the script and data extracted from the mail 151 to the decoder 503.

A script is a type of program consisting of a series of instructions in which a processing procedure is described by a character code such as an alphanumeric code.

The decoder 503 decodes data coded by a method such as Base64. Base64
Is a binary data encoding method for converting data or programs into 64 types of ASCII code strings in order to transmit the data or programs via a network that transmits only 7-bit data.

The decoder 503 may decode the coded script.

The decoder 503 is the interface 50.
The script is supplied to the parsing unit 505 via
The decrypted data is supplied to the script interpreter 506.

The syntax analysis unit 505 replaces a predetermined character string included in the script with an intermediate code that can be processed by the script interpreter 506.
Here, when the intermediate code is roughly classified, in general, (1)
Lexical columns, such as lexical analysis results or generated lexical columns,
(2) A parse tree generated as a result of the syntactic analysis, a parse tree, a tree structure such as Polish notation, (3) a class similar to a machine language such as a virtual machine code called a triple or quad. However, in this specification, this intermediate code is used in the meaning of a parse tree.

In the Java (R) language, the above (3) is called "byte code".

The intermediate code is an intermediate format code which is temporarily created for the sake of convenience in the process of converting the original source code into the final execution format in the software program. By finely separating the conversion process from the source to the target in this way, it becomes easy to adapt the language processing system to a plurality of platforms (targets).

For example, in Java (R), the source code is once converted into an intermediate code called bytecode, and the converted intermediate code is stored in the WWW server. W
The WW server sends this bytecode to the WWW browser on the client side, and the Java (R) VM (Ja
va (R) Virtual Machine) interprets and executes bytecodes. In this case, the difference between each platform (CPU
Java (R) VM absorbs (difference between operating systems) and bytecode itself does not depend on a specific platform. Thus, in Java (R), the load at runtime (conversion from bytecode to executable code)
A platform-independent programming environment is realized while suppressing

Also, in other high-level language compilers, the source code is not directly converted into an execution program (usually a binary code that can be interpreted by a CPU), but
Convert to intermediate code that has a higher degree of abstraction than the actual machine (because you do not have to worry about the restrictions of the actual machine architecture, it will be easier to optimize the code), and then the final execution format The method of generating the binary code of is often used.

The syntax analysis unit 505 supplies the script in which a predetermined character string is replaced with the intermediate code to the script interpreter 506.

The script interpreter 506 supplies the script to the authentication encryption unit 507, and the authentication encryption unit 50.
Let 7 determine the correctness of the script.

The authentication encryption unit 507 applies a hash function such as MD (Message Digest) 5 to the script to calculate a hash value corresponding to the script. The authentication encryption unit 507 determines whether the calculated hash value and the authentication data included in the script are the same.

FIG. 31 shows an example of a mail 151 including a script in which authentication data is stored. In the mail 151 shown in FIG. 31, "<SIGNATURE>" and "<
"SIGNATURE>" located between "347a9d8684ab965
Data such as 33fb6b51906fdacf9 ”is the data for authentication.

The electronic signature or certificate may be stored in the mail 151, and the authentication / encryption unit 507 may be authenticated based on the electronic signature or certificate.

When it is determined that the calculated hash value and the authentication data are the same, the authentication encryption unit 507 does not modify the script, and therefore the data indicating that the script is valid is scripted. It is supplied to the interpreter 506.

If it is determined that the calculated hash value and the authentication data are not the same, the authentication encryption unit 507 has modified the script, and therefore the data indicating that the script is not valid is transmitted to the script interpreter 5.
Supply to 06.

The script interpreter 506 sends the data indicating that the script is not valid to the authentication encryption unit 50.
When supplied from 7, do not run that script.

The script interpreter 506 sends data indicating that the script is valid to the authentication encryption unit 50.
7, the script is executed based on the data supplied from the decoder 503.

In this way, the script interpreter 50
Since No. 6 executes only a legitimate script, in the mail transmission / reception system according to the present invention, an attack by a modified fraudulent script is eliminated, and the security in executing the script is guaranteed.

The script interpreter 506 causes the resource access manager 508 to display an image or acquire data when displaying an image on the display unit 21 or acquiring data input from the touch pad.

The script interpreter 506 is a Flash
When the data is stored in the ROM 33 or the EDO DRAM 34, or when the data stored in the Flash ROM 33 or the EDO DRAM 34 is acquired, the resource access manager 508 is caused to execute the process of storing the data or acquiring the data.

The script interpreter 506 has a schedule book program 512 and an address book program 51.
3, notepad program 514, TODO book program 5
15 or the application program 516, the resource access manager 508 is made to access the schedule book program 512, the address book program 513, the memo pad program 514, the TODO book program 515, or the application program 516.

The resource access manager 508, via the platform resource access interface 509, when the script interpreter 506 requests the display of an image on the display unit 21 or the acquisition of the data input from the touch pad. I
The I / O module 510 is caused to display an image on the display unit 21, or the I / O module 510 is caused to acquire the data input from the touch pad. The data input from the touch pad acquired by the I / O module 510 is transferred to the resource access manager 508 via the platform resource access interface 509.
Is supplied to.

Resource access manager 508
Data input from the touch pad acquired by the I / O module 510 is input to the script interpreter 506.
Supply to.

Whether the resource access manager 508 has requested the storage of data in the Flash ROM 33 or EDO DRAM 34 from the script interpreter 506,
Alternatively, when acquisition of data stored in the Flash ROM 33 or EDO DRAM 34 is requested, the Flash ROM 33 or EDO is transferred to the storage module 511 via the platform resource access interface 509.
Data is stored in the DRAM 34 or the like, or the flash ROM 33 or EDO DRA is stored in the storage module 511.
Get the data stored in M34. Flash ROM 33 or E acquired by the storage module 511
The data stored in the DO DRAM 34 is supplied to the resource access manager 508 via the platform resource access interface 509.

The resource access manager 508 is the Flash RO acquired by the storage module 511.
The data stored in the M33 or EDO DRAM 34 is supplied to the script interpreter 506.

When the script interpreter 506 requests access to the schedule book program 512, the address book program 513, the notepad program 514, the TODO book program 515, or the application program 516 from the script interpreter 506, the resource access manager 508 accesses the platform resource access. The schedule book program 512, the address book program 513, the memo pad program 514, the TODO book program 515, or the application program 516 is accessed via the interface 509.

The schedule book program 512 is an application program for recording the schedule in the schedule book or displaying the recorded schedule.

The memo pad program 514 is an application program for recording a memo in the memo pad or displaying the recorded memo.

The TODO book program 515 is an application program for recording what the user should do or displaying what the recorded user should do.

The application program 516 is an application program for executing a predetermined process.

When the desired data is attached to the mail 151 and transmitted, the data construction unit 517 converts the data attached to the mail 151, which is supplied from the script interpreter 506, into a predetermined data structure.

For example, the script interpreter 506
Executes the script such as the value of the program counter or the data stored in the pushdown stack when the script that is being executed is interrupted and the data indicating the execution status of the script is sent as an attachment to the mail 151. The data indicating the state is supplied to the data configuration unit 517.

The data construction unit 517 converts the data indicating the execution state of the script, which is supplied from the script interpreter 506, into a predetermined data structure.

The data configuration unit 517 transfers the data having a predetermined data structure via the interface 504.
It is supplied to the encoder 518.

[0275] Further, the data construction unit 517 is configured to store the data supplied from the script interpreter 506 (for example, the Flash ROM 33 acquired by the storage module 511).
Or, the data stored in the EDO DRAM 34) is determined whether or not a volatile attribute is added, and if the data is added with a volatile attribute, the personal information included in the data is emptied (erased). After that, it is converted into a predetermined data structure (the details will be described later).

The data construction unit 517 supplies the data having a predetermined data structure (data not including personal information) to the encoder 518 via the interface 504.

The script interpreter 506 supplies the script to the encoder 518 through the interface 504 when the desired script is attached to the mail 151 and transmitted.

The encoder 518 has a data construction unit 517.
The data of a predetermined structure supplied from
It is encoded by a method such as 64. The encoder 518 is
The encoded data is supplied to the mail generation unit 519. The encoder 518 supplies the script supplied from the script interpreter 506 to the mail generation unit 509 as it is.

The encoder 518 may encode the script.

The mail generation unit 519 has an encoder 518.
The mail 151 storing the encoded data or script supplied from Email generator 519
Supplies the generated mail 151 to the mail transmission / reception program 104 via the mail transmission / reception program plug-in interface 501.

The mail transmission / reception program 104 transmits the mail 151 supplied from the mail generation unit 519.

The script launcher 520 has a display unit 21.
Stored in the script database 521 based on the input from the touch pad of, for example, Othello game script 531, circulation mail script 532, automatic deletion mail script 533, animation mail script 534, update mail script 535,
Alternatively, one of the scripts such as the schedule confirmation mail script 536 is selected, and the selected script is supplied to the syntax analysis unit 505 via the interface 504.

For example, as shown in FIG. 32, the display unit 21
When the icon named “Othello” is tapped among the icons displayed in, the script launcher 520 causes the script database 52 to store the Othello game script 531 corresponding to the tapped icon.
1, and supplies the Othello game script 531 to the syntax analysis unit 505 via the interface 504.

When one of the icons displayed on the display section 21 is tapped, the script launcher 520 causes the schedule confirmation mail script 536 corresponding to the tapped icon.
Is read from the script database 521, and the schedule confirmation mail script 536 is displayed on the interface 504.
Is supplied to the syntax analysis unit 505 via the.

The syntax analysis unit 505 supplies the Othello game script 53 supplied from the script launcher 520.
1, circular mail script 532, automatic deletion mail script 533, animation mail script 53
4, a predetermined character string included in a script such as the update mail script 535 or the schedule confirmation mail script 536 is replaced with an intermediate code that can be processed by the script interpreter 506. The parsing unit 505
The script in which the character string is replaced with the intermediate code is supplied to the script interpreter 506.

The script interpreter 506 supplies the Othello game script 531, the circulation mail script 532, the automatic deletion mail script 533, the animation mail script 534, and the update mail, which are supplied from the syntax analysis unit 505 and in which the character strings are replaced with the intermediate codes. A script such as the script 535 or the schedule confirmation mail script 536 is executed.

As described above, the interpreter 106 having the configuration shown in FIG.
By executing the script attached to 51, for example, a predetermined image is displayed on the display unit 21, a process corresponding to the operation of the touch pad of the display unit 21 is executed, the desired data is flash ROM 33 or EDO DRAM 34, etc. It is possible to execute processing such as storing in the flash ROM 33 or acquiring data stored in the Flash ROM 33 or the EDO DRAM 34.

Therefore, by attaching a script for executing a predetermined process to the mail 151, the sender of the mail 151 can promptly and surely cause the reader of the mail 151 to execute a desired action. become.

[0289] For example, even when the recipient of the mail 151 uses a small terminal device and the operation of replying is troublesome, the sender of the mail 151 can swiftly and surely.
The reader of the mail 151 can be made to reply.

The interpreter 106 executes the script attached to the mail 151 when the mail sending / receiving program 104 tries to open the mail 151.
The email reader does not need to obtain the corresponding script before receiving the email 151.

The newly generated script is the mail 1
Since it is transmitted by being attached to 51, the reader of the mail 151 can quickly acquire the script and can quickly execute the newly generated script.

Also, the interpreter 1 whose structure is shown in FIG.
06 executes the stored script, for example,
A predetermined image is displayed on the display unit 21, a process corresponding to the operation of the touch pad of the display unit 21 is executed, desired data is stored in the Flash ROM 33 or EDO DRAM 34, or is stored in the Flash ROM 33 or EDO DRAM 34. It is possible to perform processing such as obtaining the data that is stored.

Further, the interpreter 106 having the configuration shown in FIG. 30 executes the stored script to generate the mail 151 storing the desired script, and sends the generated mail 151 to the mail transmission / reception program 104. Can be made.

Next, the change of the platform and the change of the script transmission medium will be described.

In FIG. 33, for example, OS 101 is Windows (R)
It is a figure explaining the change of the structure of the interpreter 106 when changing a platform, such as changing to other operating systems, such as CE (trademark of Microsoft Corporation in the United States).

The script processing unit 551 of FIG. 33 includes a platform dependent unit 561, a script execution unit 562,
And an e-mail conversion unit 563.

The platform dependent part 561 is the I / O
It is composed of a module 510, a storage module 511, an application program 516, and the like.

The script execution unit 562 corresponds to the syntax analysis unit 505, script interpreter 506, authentication encryption unit 507, resource access manager 508, and data configuration unit 517 of FIG.

The e-mail converting unit 563 is the mail sending / receiving program plug-in interface 50 of FIG.
1, a mail syntax analysis unit 502, a decoder 503, an interface 504, an encoder 518, and a mail generation unit 519.

The communication unit 552 receives the mail 151 via the cradle 2 and the Internet 4, FIG.
It corresponds to the USB interface 36 of.

For example, when the platform such as the OS 101 is changed, the script processing unit 571 corresponding to the changed platform is changed from the platform dependent unit 561 to the platform dependent unit 581. Script execution unit 562 and e-mail conversion unit 5
63 is unchanged.

The platform dependent unit 581 is an I / O module 59 corresponding to the changed platform.
1, a storage module 592, an application program 593, and the like.

As described above, even if the platform is changed, if only the platform-dependent part is changed, the interpreter 106 is not changed.
Can execute the script attached to the mail 151.

FIG. 34 is a diagram for explaining a change in the configuration of the interpreter 106 when the script transmission medium is changed, for example, the script itself is transmitted by communication conforming to the specifications of Bluetooth (trademark) or the like. is there.

The script processing unit 601 when the script transmission medium is changed is the platform dependent unit 56.
1, a script execution unit 562, and a conversion unit 611.

The transmission / reception program 602 is a program for causing the communication unit 603, which executes communication conforming to specifications such as Bluetooth, to execute reception or transmission of scripts and data. The transmission / reception program 602 includes the communication unit 6
The script and data received by 03 are acquired, and the acquired script and data are supplied to the conversion unit 611 of the platform-dependent unit 561.

The transmission / reception program 602 also causes the communication unit 603 to transmit the script and data supplied from the conversion unit 611.

The conversion unit 611 uses the transmission / reception program 602.
Convert the specified character string of the script supplied from
The converted script is supplied to the script execution unit 562. Further, the conversion unit 611 converts the script and data supplied from the script execution unit 562, and transmits the converted script and data to the transmission / reception program 602.
Supply to.

The script execution unit 562 has a conversion unit 611.
Execute the script supplied by.

As described above, even if the transmission medium of the script is changed, the interpreter 106 can execute the script without changing the whole by changing only the portion depending on the transmission medium.

Next, referring to the flow charts of FIGS. 35 to 37, the process of executing the script attached to the electronic mail by the interpreter 106 having the configuration shown in FIG. 30 will be described.

[0312] In step S501, the mail send / receive program 104 determines whether or not the mail 151 to which the script is attached is displayed, and when it is determined that the mail 151 to which the script is attached is not displayed. , Returns to step S501,
The determination process is repeated.

If it is determined in step S501 that the mail 151 to which the script is attached is to be displayed, the process proceeds to step S502, and the mail sending / receiving program 104 opens the mail 151 to be opened.
Is supplied to the mail syntax analysis unit 502 via the mail transmission / reception program plug-in interface 501.

In step S503, the mail syntax analysis unit 502 extracts a script and data necessary for executing the script from the mail 151 acquired from the mail transmission / reception program 104. The data necessary for executing the script includes, for example, data indicating the execution state of the script when the script is interrupted, data corresponding to the value of the program counter or the value of the stack pointer, data indicating the arrangement of pieces of the Othello game, and animation. Is data for drawing, data for updating a program, data for indicating the state of circulation of an electronic mail, and the like.

The mail syntax analysis unit 502 supplies the extracted script and data necessary for executing the script to the decoder 503.

In step S504, the decoder 50
3 decodes the data, which is supplied from the mail syntax analysis unit 502 and is necessary for executing the script, by a method such as Base64.

In step S505, the decoder 50
3 supplies the script to the syntax analysis unit 505 via the interface 504.

In step S506, the decoder 50
3 supplies data necessary for executing the script to the script interpreter 506 via the interface 504.

In step S507, the syntax analysis unit 5
05 replaces a predetermined character string of the script supplied from the decoder 503 with an intermediate code that can be processed by the script interpreter 506. The syntax analysis unit 505 supplies the script interpreter 506 with a script in which a predetermined character string is replaced with an intermediate code.

In step S508, the script interpreter 506 processes the script by the authentication encryption unit 507.
Then, the authentication encryption unit 507 is caused to confirm the validity of the script. The authentication encryption unit 507 extracts the authentication data included in the script supplied from the script interpreter 506, for example, and applies a hash function to the script to generate a hash value.
The authentication encryption unit 507 determines the validity of the script based on whether or not the extracted authentication data and the generated hash value are the same.

The authentication encryption unit 507 supplies the script interpreter 506 with data indicating whether or not the script is valid.

In step S509, the script interpreter 506 determines whether the script is valid based on the data supplied from the authentication encryption unit 507. If it is determined that the script is not valid, the script interpreter determines that the script is valid. Since it has been modified, the process ends without executing the script.

If it is determined in step S509 that the script is valid, the process proceeds to step S510, and the script interpreter 506 executes the script.

In step S511, the script interpreter 506 determines whether input / output, information storage / readout, or access by an external application program has been requested by executing the script, and input / output by executing the script. If it is determined that the storage or reading of information, or the access of an external application program is requested, the process proceeds to step S512 and the script interpreter 506
Causes the resource access manager 508 to perform input / output, storage or reading of information, or access of an external application program.

In step S513, the resource access manager 508 determines whether or not the input / output is requested. If it is determined that the input / output is requested, the process proceeds to step S514 and the I / O module 510 is input / output. A dialog box that allows the user to input whether or not to execute is displayed on the display unit 21, and it is determined whether or not to perform input / output based on the operation of the user.

If it is determined in step S514 to execute input / output, the process advances to step S515, and the resource access manager 508 determines that the I / O module 5
10 is caused to execute input / output processing such as displaying an image, and the procedure proceeds to step S516.

If it is determined in step S513 that the input / output is not requested, the input / output processing is not necessary, so the processing of steps S514 and S515 is skipped, and the procedure proceeds to step S516.

If it is determined in step S514 that the input / output is not executed, the input / output processing should not be executed, so the processing in step S515 is skipped.
The procedure proceeds to step S516.

In step S516, the resource access manager 508 determines whether or not storage or reading of information has been requested. If it is determined that storage or reading of information has been requested, the process proceeds to step S517 and I / O is performed. A dialog box is displayed on the display unit 21 to allow the user to input whether or not the module 510 is to store or read out information, and whether or not to store or read out information based on the user's operation. To determine.

If it is determined in step S517 that information is to be stored or read, then step S517
Proceeding to 518, the resource access manager 508
The storage module 511 is caused to execute a process of storing or reading information such as storing data in the Flash ROM 33, and the procedure proceeds to step S519.

If it is determined in step S516 that storage or reading of information is not requested, the processing of storing or reading of information is not necessary, so the processing of steps S517 and S518 is skipped, and the procedure is It proceeds to S519.

If it is determined in step S517 that information storage or read is not to be executed, information storage or read processing should not be executed, so the processing in step S518 is skipped and the procedure returns to step S519. move on.

[0333] In step S519, the resource access manager 508 determines that the schedule book program 5
12, the address book program 513, the memo pad program 514, the TODO book program 515, or the application program 516 is determined, and it is determined whether or not the access to the external application program is requested. If it is determined that the user has made a decision, the process proceeds to step S520, and the I / O module 510 causes the display unit 21 to display a dialog box that allows the user to input whether or not to access the external application program. Based on the operation, it is determined whether or not to access the external application program.

If it is determined in step S520 that an external application program is to be accessed, the process advances to step S521, the resource access manager 508 accesses the external application program, and the procedure advances to step S522.

If it is determined in step S519 that access to the external application program has not been requested, then access processing to the external application program is not required, so step S520.
And the process of step S521 is skipped, and the procedure proceeds to step S522.

If it is determined in step S520 that the access to the external application program is not to be executed, the processing of accessing the external application program should not be executed.
21 is skipped, and the procedure is step S52.
Go to 2.

In step S522, the resource access manager 508 determines that the script interpreter 50
6, the result of input / output, storage or reading of information, or access of an external application program is supplied.

In step S523, the script interpreter 506 determines whether or not to send the script execution result by e-mail based on the user's operation or script description, and sends the script execution result by e-mail. If it is determined to transmit, step S524
Then, the script interpreter 506 supplies the data composing unit 517 with data to be attached to the e-mail, which data needs to be formed into a predetermined format, such as data indicating the execution state of the script.

In step S525, the data construction unit 517 forms the data supplied from the script interpreter 506 into a predetermined format. Data configuration unit 517
Supplies the shaped data to the encoder 518 via the interface 504.

In step S526, the script interpreter 506 supplies the script or data to be attached to the electronic mail to the encoder 518 via the interface 504. The data that the script interpreter 506 directly supplies to the encoder 518 is data that does not need to be shaped in the data configuration unit 517.

In step S527, the encoder 5
Reference numeral 18 encodes the data supplied from the data configuration unit 517 or the data supplied from the script interpreter 506 by a method such as Base64. The encoder 518 supplies the encoded data and script to the mail generation unit 519.

In step S528, the mail generator 519 generates the mail 151 with the script or data attached, based on the script or data supplied from the encoder 518. The mail generator 519 is a mail transmission / reception program plug-in interface 50.
The generated mail 151 is supplied to the mail transmission / reception program 104 via 1.

In step S529, the mail transmission / reception program 104 transmits the mail 151 supplied from the mail generation unit 519, and the processing ends.

If it is determined in step S511 that input / output, information storage / readout, or external application program access is not requested, input / output, information storage / readout, or external application program access is performed. Since the processing in step S512 is unnecessary, the processing in steps S512 to S522 is skipped, and the procedure proceeds to step S523 to determine whether to send the script execution result by e-mail.

If it is determined in step S523 that the script execution result is not to be sent by e-mail,
Since the process of sending an e-mail is unnecessary, step S5
The processing from 24 to step S529 is skipped, and the processing ends.

As described above, the interpreter 106 having the configuration shown in FIG. 30 can extract and execute the script attached to the mail 151 when the mail 151 attached with the script is to be displayed.

Interpreter 106 whose configuration is shown in FIG.
Is executed when the script attached to the mail 151 is executed, and when input / output, information storage or read, or access by an external application program is requested, the requested input / output, information storage or read, or external The access of the application program can be executed.

Also, the interpreter 1 whose structure is shown in FIG.
When it is requested to send the script execution result by e-mail, 06 can send the mail 151 to which the script or data is attached according to the script execution result.

Next, with reference to the flow charts of FIGS. 38 to 40, the process of executing the script stored in the script database 521 by the interpreter 106 having the configuration shown in FIG. 30 will be described.

In step S601, the script launcher 520 stores in the script database 521 based on the input from the touch pad, for example,
Select one script from Othello game script 531, circulation mail script 532, automatic deletion mail script 533, animation mail script 534, update mail script 535, etc., and parse the selected script through interface 504. Supply to the unit 505.

The processes in steps S602 to S624 are the same as steps S507 to S5.
Since each of the processes of 29 is the same, the description thereof will be omitted.

As described above, the interpreter 106 having the configuration shown in FIG. 30 can execute the selected and stored script.

Interpreter 106 whose configuration is shown in FIG.
Is input / output, information storage / readout by execution of a selected stored script, or when access of an external application program is requested, requested input / output, information storage / readout, Alternatively, access to an external application program can be executed.

Also, the interpreter 1 whose structure is shown in FIG.
06 is a mail 15 to which a script or data is attached by executing the selected and stored script.
1 can be sent.

As described above, when the sender sends the mail including the script, the action desired by the sender is executed by the receiver according to the script. However, for example, when the sender sends a malicious script to the recipient, the recipient may be damaged by executing the script.

Even if the sender has no malicious intent, even if the script itself included in the mail sent by the sender is modified by a malicious third party, Damage may occur on the side.

For example, if the script developed by the developer is
If a malicious third party modifies the script into a destructive script in the middle of the route taken by the sender, the sender does not recognize it and changes the script. If you include it in an e-mail and send it to the recipient, and the recipient does not recognize the fact that the script has been modified by a malicious third party and executes it, For example, there is a possibility that damage may occur such that the data in the device on the receiver side is destroyed.

An example for preventing such damage will be described below. Here, the recipient of the script can confirm whether or not the script is the original script developed by the developer, in other words, whether or not the script has been modified by a third party. The mechanism that prevents the damage caused by executing the script by setting the mechanism is explained.

First, what is done on the computer on the developer side of the script will be described with reference to the flowcharts of FIGS. 40 and 41. In step S701, a program for developing a script is started on the developer's computer, and the started program is used to develop the script.

In step S702, the hash function is applied to the developed script to calculate the script digest (script hash value). In step S703, the secret key of the developer is used for encryption of the calculated script digest. In this way, since encryption is performed using the secret key, the computer on the developer side must hold in advance a secret key and a public key for performing encryption using the public key cryptosystem.

At step S704, the digest of the script encrypted with the private key is incorporated into the script as a digital signature. Since this digital signature is decrypted on the receiver side, the information of the public key used for the decryption (information that can uniquely identify the public key corresponding to the private key used for encryption) is digital. It is included as information accompanying the signature.

The script incorporating the digital signature is transmitted (distributed) in step S705.
In this way, the script including the digital signature is published. The sender acquires the published script via the Internet, for example. Then, an email including the acquired script is sent to the recipient.

Processing on the receiver side will be described with reference to the flowcharts shown in FIGS. Figure 41
The process of the flowchart of FIG. 35 is performed, for example, in step S508 of the flowchart shown in FIG. That is, the authentication process of the script included in the received mail is performed by the authentication encryption unit 507 (FIG. 30).

The authentication encryption unit 507 operates in step S721.
At, the digital signature included in the received script is extracted, and the extracted digital signature is decrypted using the public key. As described above, the information associated with the digital signature includes information about the private key used when the script digest as the digital signature was encrypted, but the public key is identified based on that information. Then
Decryption is performed using the specified public key.

On the receiver side, it is necessary to obtain the public key corresponding to the secret key of the script developer in advance.
This means that the recipient can select the script to be received, and that only the public key corresponding to the secret key of the developer of the script that may be received is required to be acquired.

On the receiver side, since there are cases where a plurality of public keys corresponding to the private key of the developer of the script that may be received have been obtained, as described above, the information associated with the digital signature is used. 42, the individual key is specified, and when the individual key is specified, the decryption process is executed by using the individual key. When the individual key is not specified, the individual key cannot be specified, and thus the decryption process is not performed. The process of the flowchart shown in FIG. That is, in step S509 of the flowchart shown in FIG. 35, it is determined that the script is not valid (in this case, the recipient side determines that the received script is not desired to be executed, so the script itself is Will be judged as not valid).

As described above, the receiver side obtains only the public key corresponding to the secret key of the developer of the script which may be received, in other words, by selecting the reliable developer. Therefore, it is possible to prevent the occurrence of damage such as data being destroyed by the script being executed.

When the digital signature is decrypted in step S721, the flow advances to step S722 to calculate the script digest. The calculation of this script digest is similar to the process performed by the developer in step S702 of the flowchart of FIG. 41, and is calculated by applying the hash function to the received script.

In step S723, step S7
The plaintext digital signature generated by being decrypted in 21 (that is, the digest of the script calculated by applying the hash function to the original script on the developer side) and received in step S722 The digests of the scripts calculated by applying the hash function to the generated scripts are compared to determine whether they match.

[0370] If it is determined in step S723 that the plaintext digital signature and the digest of the script match, the script is determined to be valid in the processing in step S509 (Fig. 35), and it is determined that they do not match. It is determined that the script is not valid in the processing in step S509.

If it is determined that the script is not valid, it is considered that the script has been modified in some way. Regardless of whether or not the script causes some damage, the modified script is not executed by executing the processing as described above. A system may be provided to notify the developer or the like when a script that is judged to have been modified is found.

By providing the mechanism as described above, it is possible to judge whether or not the script is the original script developed by the developer, and it is possible to prevent the damage from being caused by the modified script. .

In the above-described embodiment, the mail including the script is explained as being transmitted and received via the Internet. However, for example, communication using radio waves or electromagnetic waves, infrared communication, wireless communication such as Bluetooth is used. It goes without saying that the same processing can be executed regardless of which communication method is used, such as communication or wired communication via a predetermined cable.

As shown in FIG. 5, a magnetic disk 6 is used as a recording medium for recording a program which is installed in the computer and is made executable by the computer.
1 (including flexible disk), optical disk 62
(CD-ROM (Compact Disc-Read Only Memory), DVD (Di
(including gital Versatile Disc), magneto-optical disc 63
(Including MD (Mini-Disc) (registered trademark)), or package media including semiconductor memory 64, or Fl in which programs are temporarily or permanently stored
It is composed of the ash ROM 33 and a hard disk. The recording of the program on the recording medium may be carried out by using a wired or wireless communication medium such as a public line network 202, a local area network, the Internet 4, and digital satellite broadcasting via an interface such as a router or a modem as necessary. Done.

In the present specification, the steps for writing the program recorded on the recording medium are not limited to the processing performed in time series in the order described, but are not necessarily performed in time series. It also includes processing executed in parallel or individually.

In this specification, the system means
It represents the entire apparatus composed of a plurality of devices.

[0377]

As described above, according to the first information processing apparatus and method and the program of the present invention, a hash function is applied to a created script, a hash value is calculated, and the hash value is set to a predetermined value. Encrypt with a key,
Since the encrypted hash value is incorporated in the script, it is possible to recognize the alteration of the script by a third party in the subsequent process.

Further, according to the second information processing apparatus and method and the program of the present invention, a script added as an attachment file to a mail is extracted in synchronization with an instruction to open the mail, and the code is encrypted from the script. Extracted predetermined information, decrypt the extracted encrypted predetermined information, apply a hash function to the extracted script, calculate the hash value, and the decrypted predetermined information, It is judged whether the calculated hash values match, and if it is judged that the hash values match, the processing by the script is executed, so it is possible to recognize whether the script is a modified script. It is possible to prevent the damage caused by the execution of.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a mail transmitting / receiving system according to the present invention.

FIG. 2 is a diagram showing the appearance of PDA1.

FIG. 3 is a diagram showing an appearance of a PDA 1 mounted on a cradle 2.

FIG. 4 is a diagram showing an appearance of PDA1.

FIG. 5 is a diagram illustrating a configuration of PDA 1.

FIG. 6 is a diagram illustrating a procedure until a mail transmitted by PDA1-1 is received by PDA1-2.

FIG. 7 is a diagram illustrating a program executed by PDA 1 that transmits an email.

FIG. 8: Sending an email or receiving an email
It is a figure explaining the program which PDA1 runs.

FIG. 9 is a diagram showing an example of display on the PDA 1.

FIG. 10 is a diagram illustrating a more detailed structure of interpreter 106.

11 is a diagram illustrating the operation of the interpreter 106. FIG.

FIG. 12 is a diagram showing an example of the structure of a mail 151.

FIG. 13 is a diagram for explaining the operation of the interpreter 106.

FIG. 14 is a diagram for explaining the operation of the interpreter 106.

FIG. 15 is a diagram showing an example of a mail 151.

FIG. 16 is a diagram illustrating script execution.

FIG. 17 is a diagram showing an example of a script.

FIG. 18 is a diagram showing a display example of the PDA 1.

FIG. 19 is a diagram showing an example of a display of PDA1.

FIG. 20 is a diagram showing an example of display on the PDA 1.

FIG. 21 is a diagram showing an example of display on the PDA 1.

FIG. 22 is a flowchart illustrating a mail transmission process.

FIG. 23 is a flowchart illustrating a mail reception process.

FIG. 24 is a flowchart illustrating script processing.

FIG. 25 is a flowchart illustrating a process of Othello.

FIG. 26 is a diagram showing a second embodiment of a mail transmission / reception system according to the present invention.

FIG. 27 is a diagram showing an appearance of a digital mobile phone 301 with a camera.

FIG. 28 is a diagram showing an appearance of a display unit 302 of the digital mobile phone with camera 301.

FIG. 29 is a block diagram showing the configuration of a digital mobile phone with camera 301.

30 is a diagram showing an example of a more detailed configuration of the interpreter 106. FIG.

FIG. 31 is a diagram showing an example of a mail 151 including a script in which authentication data is stored.

FIG. 32 is a diagram illustrating an example of icons displayed on the display unit 21.

FIG. 33 is a diagram illustrating a change in configuration of interpreter 106 when a platform is changed.

FIG. 34 is a diagram illustrating a change in configuration of interpreter 106 when a script transmission medium is changed.

FIG. 35 is a flowchart illustrating a process of executing a script attached to an electronic mail, which is executed by interpreter 106 having the configuration shown in FIG. 30.

FIG. 36 is a flowchart illustrating a process of executing a script attached to an e-mail by interpreter 106 having the configuration shown in FIG. 30.

FIG. 37 is a flowchart illustrating a process of executing a script attached to an e-mail by interpreter 106 having the configuration shown in FIG. 30.

38 is a flowchart illustrating a process of executing a script stored in a script database 521 by the interpreter 106 having the configuration shown in FIG.

FIG. 39 is a flowchart illustrating a process of executing a script stored in a script database 521 by the interpreter 106 having the configuration shown in FIG. 30.

FIG. 40 is a diagram illustrating a process related to authentication.

FIG. 41 is a flowchart illustrating a process performed on the developer side.

[Fig. 42] Fig. 42 is a flowchart illustrating a process performed on the receiver side.

[Explanation of symbols]

1-1 and 1-2 PDA, 2-1 and 2-2 cradle, 3-1 and 3-2 personal computer, 4 Internet 4-1 and 5-2 mail server, 6-1 and 6-2 DNS server, 11
Memory stick, 21 display, 22 keys, 23 jog dial, 31 CPU, 33
Flash ROM, 34 EDO DRAM, 35 memory stick interface, 36 USB interface, 61 magnetic disk, 62 optical disk,
63 magneto-optical disk, 64 semiconductor memory, 10
1OS, 102-1 to 102-4 drivers, 1
04 mail transmission / reception program, 106 interpreter, 151 mail, 201-1 to 201-4
Base station, 202 public line network, 203 access server, 204 content server, 205-1 to 205-N WWW server, 301-1 and 301-
2 digital mobile phone with camera, 309 liquid crystal display, 351 main control unit, 364 transmission / reception circuit unit, 501 mail transmission / reception program plug-in interface, 502 mail syntax analysis unit, 503
Decoder, 504 interface, 505
Parser, 506 Script interpreter, 5
07 Authentication / encryption unit, 508 Resource access manager, 509 Platform resource access interface, 510 I / O module, 5
11 storage module, 517 data configuration unit, 518 encoder, 519 mail generation unit,
520 script launcher, 521 script database, 531 Othello game script,
532 Circular mail script, 533 Automatic delete mail script, 534 Animation mail script, 535 Update mail script,
536 Schedule confirmation mail script, 571 script processing part, 581 platform dependent part, 5
91 I / O module, 592 storage module, 593 application program, 60
1 script processing unit, 602 transmission / reception program,
603 Communication unit

Claims (8)

[Claims] 1. A creating unit for creating a script, a calculating unit for applying a hash function to the script created by the creating unit to calculate a hash value, and a hash value calculated by the calculating unit. Information processing characterized by including an encryption means for encrypting using a predetermined key, and an embedding means for incorporating the hash value encrypted by the encryption means into the script generated by the generation means. apparatus. 2. A creation step of creating a script, a calculation step of applying a hash function to the script created in the processing of the creation step to calculate a hash value, and a calculation step of the calculation step. An encryption step of encrypting the hash value using a predetermined key, and an embedding step of incorporating the hash value encrypted in the processing of the encryption step into the script generated in the processing of the generation step. An information processing method comprising: 3. A creation step of creating a script, a calculation step of applying a hash function to the script created in the processing of the creation step to calculate a hash value, and a calculation step of the calculation step. An encryption step of encrypting the hash value using a predetermined key, and an embedding step of incorporating the hash value encrypted in the processing of the encryption step into the script generated in the processing of the generation step. A recording medium having a computer-readable program recorded thereon. 4. A creation step of creating a script; a calculation step of applying a hash function to the script created in the processing of the creation step to calculate a hash value; and a calculation step of the calculation step. An encryption step of encrypting the hash value using a predetermined key, and an embedding step of incorporating the hash value encrypted in the processing of the encryption step into the script generated in the processing of the generation step. A program that causes a computer to execute. 5. An information processing apparatus for receiving an email, comprising: a first extracting means for extracting a script added as an attachment file to the email in association with an instruction to open the email; and the first extracting means. Second extracting means for extracting encrypted predetermined information from the script extracted by, decryption means for decrypting the encrypted predetermined information extracted by the second extracting means, A calculation unit that applies a hash function to the script extracted by the first extraction unit to calculate a hash value, the predetermined information decrypted by the decryption unit, and the hash calculated by the computation unit. Determining means for determining whether or not the values match, and if the determining means determines that the predetermined information matches the hash value, the first An information processing device, comprising: an executing unit that executes a process by the script extracted by the extracting unit. 6. An information processing method of an information processing apparatus for receiving an email, comprising a first extracting step of extracting a script added as an attachment file to the email in association with an instruction to open the email, A second extracting step of extracting predetermined information encrypted from the script extracted in the processing of the first extracting step; and the predetermined encrypted information extracted in the processing of the second extracting step A decryption step of decrypting the script, a calculation step of applying a hash function to the script extracted in the process of the first extraction step to calculate a hash value, and a predetermined step decrypted in the process of the decryption step. A determination step of determining whether or not the information and the hash value calculated in the processing of the calculation step match; and a processing of the determination step. An information processing method comprising: executing a process by the script extracted by the first extracting step when it is determined that the predetermined information and the hash value match. 7. A program for controlling an information processing apparatus for receiving a mail, the first extraction step of extracting a script added as an attachment file to the mail in association with an instruction to open the mail, A second extraction step of extracting predetermined information encrypted from the script extracted in the processing of the first extraction step; and the encrypted predetermined information extracted in the processing of the second extraction step. A decryption step of decrypting information, a calculation step of applying a hash function to the script extracted in the process of the first extraction step to calculate a hash value, and a decryption step decoded in the process of the decryption step. A determination step of determining whether or not the predetermined information and the hash value calculated in the processing of the calculation step match, and the determination step. And a hash value is determined to match with the predetermined process, a computer-readable method including: an execution step of executing a process by the script extracted by the first extraction step. A recording medium in which possible programs are recorded. 8. A first extraction step of extracting, in a computer controlling an information processing device that receives a mail, a script added as an attachment file to the mail in association with an instruction to open the mail, A second extracting step of extracting predetermined information encrypted from the script extracted in the processing of the first extracting step; and the predetermined encrypted information extracted in the processing of the second extracting step A decryption step of decrypting the script, a calculation step of applying a hash function to the script extracted in the process of the first extraction step to calculate a hash value, and a predetermined step decrypted in the process of the decryption step. A determination step of determining whether or not the information and the hash value calculated in the calculation step match, A program for executing an execution step of executing a process by the script extracted by the first extraction step when it is determined in the process that the predetermined information and the hash value match.