JP4687016B2 - CONTENT USE DEVICE, CONTENT PROVIDING DEVICE, CONTENT PROVIDING SYSTEM, KEY INFORMATION ACTIVATION METHOD IN CONTENT PROVIDING DEVICE, AND PROGRAM - Google Patents

Description

  The present invention relates to a content using device, a content providing device, a content providing system, a key information activation method in the content providing device, and a program.

  In recent years, information providing services for distributing digital contents such as movies and music using a computer network via the Internet have become widespread. Among such information providing services, for example, in an electronic music distribution system, digital music content created by a content provider such as a record company can be obtained online from a predetermined service provider via a computer network such as the Internet. To be delivered to.

The user selects the content received by the user device such as a personal computer, for example, when the user selects, for example, buys it or plays it under a certain service condition such as the number of playable times, and the user uses the content usage history under the service condition. It is recorded as a log and sent to the content provider.
The content provider calculates a usage fee based on the transmitted user log, and makes a payment for the usage fee by notifying the user of the usage fee (see, for example, Patent Document 1).
JP 2001-147970 A

  However, according to the above-described conventional technology, the procedure such as content selection and payment information input is complicated on the user side, and content can be obtained without payment from the content provider and illegally processed. May be used.

  The present invention has been made in view of the above circumstances, and by activating key information by linking encrypted content with a credit card settlement scheme, the procedure for purchasing content by a user is simplified, An object of the present invention is to provide a content use device, a content providing device, a content providing system, a key information activation method in the content providing device, and a program that prevent unauthorized use of the content.

The present invention to solve the problems upper respiratory, the content providing apparatus for providing content are connected via a network, a content utilization apparatus for utilizing the content distributed from the content providing device, from a user A content key request transmitting unit that transmits the content key request to the content providing device, a content key receiving unit that receives the content key transmitted by the content providing device in response to the content key request, and the content key receiving unit A volatile storage device that stores the received content key, and a payment request that transmits a payment request for requesting payment of the content usage fee to the content providing device as the content key is stored in the volatile storage device Between the transmission unit and the content providing device in response to the payment request. Along with the reception of the notification that the finished settlement process Tsu, the content key written in the volatile memory device is characterized by comprising a non-volatile memory device held replicated.

Further, the present invention is a content providing apparatus that is connected to a content using apparatus via a network and distributes requested content, and that receives a content key request from the content using apparatus and transmits a content key A key transmission unit; a payment request for requesting payment of the content usage fee from the content usage device; and a payment request reception unit for performing payment processing with the payment device; and the payment processing from the payment device Along with the notification that a finished is made, the executed by the content using apparatus, the nonvolatile memory of the content key written to the content key transmission unit volatile storage device a content key transmitted An instruction to invalidate copying to a device upon reception of a content distribution request issued from the content using device. Wherein a content key reset instruction unit which issues, after disabled written content key in the volatile storage device, further comprising a, an encrypted content distribution unit which encrypts and delivers the requested content to And

The present invention is also a content providing system in which a content providing apparatus that distributes content and a content using apparatus that uses the distributed content are connected via a network, and the content using apparatus is received from a user. A content key request transmitting unit that transmits the content key request to the content providing device, a content key receiving unit that receives the content key transmitted by the content providing device in response to the content key request, and the content key receiving unit A volatile storage device that stores the received content key, and a payment request that transmits a payment request for requesting payment of the content usage fee to the content providing device as the content key is stored in the volatile storage device A transmission unit and the content providing device in response to the payment request; Along with the reception of the notification that the finished settlement processing performed between the nonvolatile memory device in which the volatile content key written to the storage device is copied held, to the content providing device A content request transmitting unit that transmits a content request to the content providing device, wherein the content providing device receives a content key request from the content using device and transmits a content key; and A payment request receiving unit that receives a payment request and performs a payment process with the payment apparatus, and a notification indicating the completion of the payment process is sent from the payment apparatus to notify the end of the payment process. The use of the content in response to the payment completion notification part being transmitted and the notification indicating that the payment processing has been completed from the payment device Issuing an instruction to invalidate the copy of the content key written in the volatile storage device to the nonvolatile storage device executed upon receipt of the content distribution request issued from the content utilization device A content key reset instruction unit and an encrypted content distribution unit that encrypts and distributes the requested content after the content key written in the volatile storage device becomes invalid .

The present invention is also a key information activation method for a content providing apparatus that is connected to a content using apparatus via a network and distributes the requested content, and receives the content key request from the content using apparatus. and transmitting the content key Te, with the content key is stored in the volatile memory device, the method comprising: receiving a settlement request for payment of the fee for the content from the content using apparatus, the content providing Content written in a volatile storage device that is executed by the content using device in response to receiving a notification indicating that the device has completed the payment processing performed with the payment device in response to the payment request Receiving a content distribution request issued from the content using device to copy a key to a non-volatile storage device A step of disabling the trigger, after the disabled the volatile content key written to the storage device, and having the steps of: delivering to encrypt the requested content.

Further, the present invention is a program used in a content providing apparatus that is connected to a content using apparatus via a network and distributes requested content, and that receives a content key request from the content using apparatus and receives the content key a process of transmitting, volatile with the content key is stored in the storage device, the process of receiving payment request from said content usage device requesting settlement of the usage fee of the content, the content providing device wherein The nonvolatile content key written in the volatile storage device, which is executed by the content use device in response to receiving a notification indicating that the payment processing performed with the payment device has been completed in response to the payment request Copying to the volatile storage device is disabled when a content distribution request issued from the content using device is received A process of issuing an instruction to, after said content key written in the volatile memory device is disabled, characterized in that to execute a process of encrypts and delivers the requested content, to the computer.

According to the present invention, the content providing device transmits a content key to the content using device, and is executed by the content using device upon completion of the payment process, and the nonvolatile storage of the content key written in the volatile storage device is performed. The content key decryption and the payment process can be linked by disabling the copy to the device and receiving the content distribution request issued from the content using device as an opportunity to encrypt and distribute the requested content. As a result, even if unauthorized copying of the content is performed, the secondary user cannot use the content, and also exists in the content key information volatile storage device until the settlement is completed, and is erased. The content cannot be decrypted even if a fraudulent act such as obtaining key information without performing settlement. This simplifies the user's procedure for purchasing content and prevents unauthorized use of the content.
According to the present invention, the content using device writes the content key transmitted from the content providing device to the volatile storage device, and stores the content key written in the volatile storage device in accordance with the completion of the settlement. The content key is copied and held in the device, so that the content key remains in the non-volatile storage device even when the IC card is removed from the reader / writer, and the IC card is inserted into another content usage device. This makes it possible to browse content.

FIG. 1 is a diagram showing an example of a system configuration of a content providing system in which the present invention is implemented.
Here, since credit settlement is assumed, a content server 2 on which a content provider according to the present invention is installed and managed in a computer network 3 such as the Internet, and a credit installed and managed by a credit company. A server 4 and a plurality of content use apparatuses 1 including an IC card reader / writer possessed by a user or connected to a built-in personal computer are connected.
Note that the content here includes maps and the like in addition to still images, moving images, music, photos, movies, and programs.

FIG. 2 is a block diagram showing an example of the internal configuration of the content providing system according to the embodiment of the present invention.
In the content providing system of the present invention, a content providing device 2 that distributes content and a content using device 1 that uses the distributed content are connected via a network 3.
The content utilization device 1 is composed of a device such as an IC card, for example, and includes a content request transmission unit 11, a content key reception unit 12, a settlement request transmission unit 13, a content key writing unit 14, a content key decryption unit 15, The content request transmission unit 16, the encrypted content reception unit 17, and various data file storage devices (storage device 18, volatile storage device 19, and nonvolatile storage device 20). A request receiving unit 21, a content key transmitting unit 22, a settlement request receiving unit 23, a settlement end notification unit 24, a content request receiving unit 25, a content key reset instruction unit 26, an encrypted content distribution unit 27, The content DB 28 is used.

The content key request transmission unit 11 in the content utilization device 1 has a function of requesting the content server 2 to transmit a content key prior to content reception. The content key receiving unit 12 supplies the key information received from the content server 2 to the content key writing unit 14 and the settlement request transmitting unit 13. Payment request transmission unit 13, to the content server 2 starts the payment process Ru was performed between the credit server 4, also the content key writing unit 14, the received content key information in the volatile storage device 19 Write as a data file.
The content key decrypting unit 15 waits for the settlement processing by the content server 2 to end, and copies the content key information written in the volatile storage device 19 by the content key writing unit 14 to write it in the nonvolatile storage device 20. The content request transmission unit 16 transmits a content request to the content server 2, and the encrypted content reception unit 17 receives the encrypted content transmitted from the content server 2 and stores it as a content file in the storage device 18. To do.

The content key transmitting unit 22 in the content providing apparatus receives a content key request from the content using apparatus 1 via the content key request receiving unit 21 and transmits the content key. Further, the payment request receiving unit 23 receives a payment request from the content use device 1 and performs a payment process with the credit server 4. When the settlement process is completed, a notification to that effect is given to the settlement end notification unit 24, and the content key copy process by the content key decrypting unit 15 of the content using apparatus 1 is started.
On the other hand, the content request receiving unit 25 receives the content request issued from the content using device 1 and activates the content key reset instruction unit 26. The content key reset instruction unit 26 copies the key information written in the volatile storage device 19 to the non-volatile storage device 20, which is executed by the content use device 1 upon completion of the settlement process, to the content use device 1. It has a function of issuing an instruction to invalidate it upon reception of a content request issued from. The encrypted content distribution unit 27 has a function of encrypting the requested content and distributing it to the content using device 1 after the content key information becomes invalid.

  The payment information transmission / reception described above is based on the EMV (Europay Mastercard VISA) specification here. EMV is a common specification formulated for the interoperability of smart cards developed by the three credit companies indicated in its name, and the card and the It shows the minimum functionality required for terminals and applications. Further, the key exchange may conform to the RSA method.

FIG. 3 is an operation sequence diagram showing the operation of the embodiment of the present invention shown in FIGS. Here, the operations of the IC card as the credit server 4, the content server 2, and the content use device 1 are shown.
Here, in order to prevent unauthorized use of content, a system is assumed in which content is encrypted and distributed. First, the content key request receiving unit 21 of the content server 2 receives a content key request from a user (S31). The content key request reception unit 21 activates the content key transmission unit 22 and transmits the content key to the IC card 1 as the content use device. The content key is received by the content key reception unit 12 of the IC card 1. (S 32), stored in the volatile storage device 19 by the content key writing unit 14.

Subsequently, a settlement request is transmitted from the IC card 1 (S33), and the content server 2 that has received this performs a settlement process with the credit server 4 (S34). The content server 2 waits for the notification of the end of the payment process (S35), notifies the IC card 1 via the payment process notification unit 24 (S36), and further activates the content key decryption unit 15 to volatile storage device The copy of the content key stored in 19 is started, and the copied content key is held in the nonvolatile storage device 20 (S37). When this copying process is completed (S38), the IC card 1 transmits a content request to the content server 2 (S39).
If the user does not make a payment, the content key is stored in the volatile storage device 19 and is deleted by a reset instruction. However, it is also possible to adopt a mechanism in which the key is used only once as a preview key.

The content request issued from the IC card 1 is received by the content request receiving unit 25 of the content server 2, and the content request receiving unit 25 activates the content key reset instruction unit 26. The content key reset instruction unit 26 issues an instruction to invalidate the content key held in the volatile storage device 19 upon receipt of the content distribution request.
That is, the content key is reset and a session is established between the IC card 1 and the content server 2 to redistribute the content key (S40). Here, the encrypted content distribution unit 27 is activated, acquires the requested content from the content DB 28, and distributes the requested content to the IC card 1 (S41). The IC card 1 can receive this and decrypt the content for viewing (S42).

  FIG. 4 shows an example of the internal configuration of the IC card. Here, the IC card 1 is mounted as the content use device 2 of the present invention, and the CPU 41 is the core, and the ROM 42, the RAM (volatile storage device) 43, the EEPROM (nonvolatile storage device) 44, and the S / P 46 (series-parallel). Conversion circuit), P / S 47 (parallel serial conversion circuit) is composed of a main body chip commonly connected to the internal bus 52, and an RF interface 50 (only in the case of a non-contact IC card). An interrupt logic 45 is connected to the CPU 41, and a reset 48, a clock 49, and a power source 51 supplied from the outside are supplied to each block.

  The CPU 41 receives from the content server 2 and the content key request transmission unit 11 that requests the content server 2 to transmit the content key prior to receiving the content from the content server 2 based on the program recorded in the ROM 42 at the manufacturing stage. The content key receiving unit 12 for supplying the key information to the content key writing unit 14 and the settlement request transmitting unit 13, the settlement request transmitting unit 13 for starting the settlement process performed with the credit server 4 for the content server 2, The content key writing unit 14 that writes the received content key as a data file in the volatile storage device 19, and the content key written in the volatile storage device 19 by the content key writing unit 14 after the settlement processing by the content server 2 ends. Copy the non-volatile storage device 20 Content key decryption unit 15 to be written, content request transmission unit 16 that transmits a content request to the content server 2, and reception of encrypted content received from the content server 2 and stored as a content file in the storage device 18 Each function as the unit 17 is executed.

As described above, the present invention is written in the volatile storage device 19 that is executed by the content use device 1 when the content server 2 transmits the content key to the content use device 1 and ends the payment process. The content key is decrypted and settled by copying the content key to the non-volatile storage device 20 and invalidating the content delivery request issued from the content using device 1 and then delivering the encrypted requested content. The process is linked.
As a result, even if the content is illegally copied, the secondary user cannot use the content, and the content key exists in the volatile storage device 19 and is deleted until the settlement is completed. The content cannot be decrypted even if an illegal act such as obtaining key information without performing settlement is performed. This simplifies the procedure for user content purchase and prevents unauthorized use of content.

  Further, according to the present invention, the content use device writes the content key transmitted from the content server 2 to the volatile storage device 19, and the content key written in the volatile storage device 19 is nonvolatile when the payment is completed. The content key remains in the nonvolatile storage device 20 even when the IC card is removed from the reader / writer, for example, when the IC card is removed from the reader / writer. The content can be browsed by being inserted into the content use device.

  2, the content key request transmitting unit 11, the content key receiving unit 12, the settlement request transmitting unit 13, the content key writing unit 14, the content key decrypting unit 15, the content request transmitting unit 16, and the encrypted content receiving unit 17 are illustrated. The content key request receiving unit 21, the content key transmitting unit 22, the settlement request receiving unit 23, the settlement end notifying unit 24, the content request receiving unit 25, the content key reset instructing unit 26, and the encrypted content distributing unit 27. The content providing apparatus, the content using apparatus, and the content providing system according to the present invention are realized by recording the procedure to be recorded on a computer-readable recording medium, causing the computer system to read and execute the program recorded on the recording medium. Can do. The computer system here includes an OS and hardware such as peripheral devices.

Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

  The embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the embodiments, and includes designs and the like that do not depart from the gist of the present invention.

It is a figure which shows an example of the system configuration | structure of the content provision system with which this invention is implemented. It is a block diagram which shows the internal structure of the content provision system concerning embodiment of this invention. It is the operation | movement sequence diagram quoted in order to demonstrate the operation | movement concerning embodiment of this invention. It is a block diagram which shows an example of an internal structure of the content utilization apparatus concerning embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Content utilization apparatus, 2 ... Content server (content provision apparatus), 3 ... Network, 4 ... Credit server, 11 ... Content key request transmission part, 12 ... Content key reception part, 13 ... Settlement request transmission part, 14 ... Content Key writing unit, 15 ... content key decrypting unit, 16 ... content request transmitting unit, 17 ... encrypted content receiving unit, 18 ... storage device, 19 ... volatile storage device, 20 ... nonvolatile storage device, 21 ... content key request Receiving unit, 22 ... content key transmitting unit, 23 ... settlement request receiving unit, 24 ... settlement end notification unit, 25 ... content request receiving unit, 26 ... content key reset instruction unit, 27 ... encrypted content distribution unit, 28 ... content DB

Claims (5)

A content providing device that provides content is a content using device that is connected via a network and uses content distributed from the content providing device,
A content key request transmission unit for transmitting a content key request from a user to the content providing device;
A content key receiving unit for receiving a content key transmitted by the content providing apparatus in response to the content key request;
A volatile storage device for storing the content key received by the content key receiving unit;
A payment request transmission unit that transmits a payment request for requesting payment of the usage fee of the content to the content providing device as a content key is stored in the volatile storage device;
The content key written in the volatile storage device is copied and held when the content providing device receives a notification indicating that the payment processing performed with the payment device in response to the payment request is completed. A non-volatile storage device,
A content using apparatus comprising: A content utilization device is a content providing device that is connected via a network and distributes requested content,
A content key transmission unit that receives a content key request from the content utilization device and transmits a content key;
A settlement request receiving unit that receives a settlement request for requesting settlement of the usage fee of the content from the content utilization device and performs a settlement process with the settlement device;
The content key transmitted by the content key transmitting unit, which is executed by the content using device, is written in the volatile storage device in response to the notification indicating that the payment processing is completed from the payment device. A content key reset instruction unit that issues an instruction to invalidate the copy of the content key to the nonvolatile storage device upon receipt of a content distribution request issued from the content utilization device;
An encrypted content distribution unit that encrypts and distributes the requested content after the content key written in the volatile storage device becomes invalid;
A content providing apparatus comprising: A content providing system in which a content providing device that distributes content and a content using device that uses the distributed content are connected via a network,
The content using device is:
A content key request transmission unit for transmitting a content key request from a user to the content providing device;
A content key receiving unit for receiving a content key transmitted by the content providing apparatus in response to the content key request;
A volatile storage device for storing the content key received by the content key receiving unit;
A payment request transmission unit that transmits a payment request for requesting payment of the usage fee of the content to the content providing device as a content key is stored in the volatile storage device;
The content key written in the volatile storage device is copied and held when the content providing device receives a notification indicating that the payment processing performed with the payment device in response to the payment request is completed. A non-volatile storage device,
A content request transmission unit that transmits a content request to the content providing device,
The content providing apparatus includes:
A content key transmission unit that receives a content key request from the content utilization device and transmits a content key;
A payment request receiving unit that receives the payment request from the content use device and performs a payment process with the payment device;
A settlement end notification unit for transmitting a settlement processing end notification in response to the notification indicating that the settlement processing has been completed from the settlement device;
Copying the content key written in the volatile storage device to the nonvolatile storage device, which is executed by the content use device, in response to the notification that the payment processing is completed from the payment device. A content key reset instruction unit that issues an instruction to invalidate upon receipt of a content distribution request issued from the content using device;
An encrypted content distribution unit that encrypts and distributes the requested content after a content key written in the volatile storage device becomes invalid. A content utilization device is a key information activation method in a content providing device that is connected via a network and distributes requested content,
Receiving a content key request from the content utilization device and transmitting a content key;
A step of volatile with the content key is stored in the storage device, receives a payment request for payment of the fee for the content from the content using apparatus,
Write to the volatile storage device that is executed by the content using device when the content providing device receives a notification indicating that the payment processing performed with the payment device in response to the payment request has been completed. Invalidating the copy of the content key to the non-volatile storage device upon receipt of the content distribution request issued from the content utilization device;
Encrypting and delivering the requested content after the content key written to the volatile storage device has become invalid;
A method for activating key information in a content providing apparatus, comprising: A content use device is a program used for a content providing device that is connected via a network and distributes requested content,
Receiving a content key request from the content utilization device and transmitting the content key;
As the volatile content key in the storage device is stored, a process of receiving a payment request for payment of the fee for the content from the content using apparatus,
Write to the volatile storage device that is executed by the content using device when the content providing device receives a notification indicating that the payment processing performed with the payment device in response to the payment request has been completed. A process of issuing an instruction to invalidate copying of the content key to the nonvolatile storage device upon reception of a content distribution request issued from the content using device;
A process of encrypting and distributing the requested content after the content key written in the volatile storage device becomes invalid;
A program that causes a computer to execute.

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