JP2002092223A - Content distribution device, content browsing device, content distribution system, and program recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent illegal duplication actions regarding a content distribution device. SOLUTION: This content distribution device 1 is provided with an authentication processing part for performing an authentication processing by using individual number information inputted for purchase and used for the account settlement for the purchase of contents 151 and a cipher processing part 12 for ciphering the contents by using the individual number information and distributing them. This content perusal device 2 is provided with a browser 161 for perusing the contents 152 (151) which are the contents ciphered by using the individual number information and including the individual number information. The browser 161 displays the individual number information and then displays the contents 151 on the basis of the ciphered contents 152.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a content distribution device, a content browsing device, a content distribution system, and a program recording medium, and more particularly to a content distribution device, a content browsing device, a content distribution system, and a program for preventing illegal duplication. It relates to a recording medium.

[0002]

2. Description of the Related Art With the development of the Internet, distribution of the content to purchased clients has been performed via the Internet. Since the distributed content is digital information, the client can reproduce the same content as the information source. The content to be distributed includes a still image such as bromide, a moving image, and music information for directly distributing a music CD.

[0003] Such content distributed via the Internet usually incorporates a copy protection mechanism. That is, the client (individual) who has received the distribution is prevented from repeating illegal copying (copying) based on the distributed content. For example, when a content that has been encrypted in advance by using a predetermined (fixed) encryption key is distributed, a client who has purchased the information is notified of the encryption key, and when the client uses the encryption key to properly reproduce the content, The method of decompressing only is the most common copy protection.

[0004]

Although content distributed via the Internet has been subjected to temporary copy protection, it is practically impossible to completely prevent illegal copying. This is for the following reason.
In other words, a complicated encryption that requires a long time for decompression cannot be adopted due to the nature of the distribution business, so that the encryption technology is limited. Even if a new encryption technique is adopted, there is a person who decrypts it hobbyly, and the decryption means is publicly disclosed.

According to the research of the present inventor, illegal copying is performed not for the client (individual) who received the distribution but for another person who has not yet purchased the content. There are overwhelmingly many things.
Therefore, if a copy resulting from an illegal duplication is given to another person and the personal information of the client (individual) who received the distribution is also entrusted to the other person,
Even without using special encryption technology, illegal duplication can be suppressed mentally.

[0006] An object of the present invention is to provide a content distribution device that prevents illegal duplication.

Another object of the present invention is to provide a content browsing apparatus that prevents illegal duplication.

It is another object of the present invention to provide a content distribution system that prevents illegal duplication.

It is another object of the present invention to provide a program recording medium on which a program for realizing a content distribution device and a content browsing device that prevents illegal duplication is recorded.

[0010]

According to the present invention, there is provided a content distribution apparatus for purchasing content, using personal number information input for the purchase and used for approval.
Using an authentication processing unit that performs authentication processing and personal number information,
An encryption processing unit that encrypts and distributes the content.

[0011] According to the content distribution apparatus of the present invention, the content is encrypted using the personal number information used for making a decision on the individual who uses the distributed content browsing apparatus. That is, the encryption key is personal number information of the individual. Therefore, when the encrypted content is copied and given to another person, personal number information such as a credit number of the user is entrusted to the other person. As a result, the personal number information such as the credit number is known to others, and the individual may be damaged. Can be mentally suppressed.

[0012] The content browsing apparatus of the present invention is a content which is input for purchase of the content from the content browsing apparatus and which is encrypted using personal number information used for its decision. Including a browser for viewing content,
The personal number information is displayed, and the content is displayed based on the encrypted content.

According to the content browsing apparatus of the present invention, personal number information used for making a decision on an individual who uses the distributed content browsing apparatus is temporarily displayed. Therefore, when the encrypted content is copied and given to another person, personal number information such as a credit number of the user becomes known to the other person. As a result, the personal number information such as the credit number is known to others, and the individual may be damaged. Can be mentally suppressed.

Further, the present invention provides a content distribution system including the above-described content distribution device and content browsing device, so that the content distribution system can be realized.

Further, the present invention provides a program recording medium in which a program for realizing the content distribution device and the content browsing device as described above is recorded in a computer-readable manner, thereby realizing the content distribution device and the content browsing device. be able to.

[0016]

FIG. 1 is a configuration diagram of a content distribution system, showing the configuration of a content distribution system according to the present invention.

The content distribution system includes a content distribution device 1 and a content browsing device 2. The content distribution device 1 and the content browsing device 2 are connected to each other via a network 4 and perform communication. In this example, the content distribution device 1 includes, for example, a content server, the content browsing device 2 includes, for example, a client (client terminal), and the network 4 includes, for example, the Internet. Content server 1
In response to a content distribution (purchase) input from the client 2, the content is distributed to the client 2. For this purchase, the content server 1 requests the client 2 to input the personal number information,
The content encrypted using the personal number information is distributed to the client 2.

In this example, the content server 1 is connected to a credit authentication device 3 installed by a credit company. That is, it is connected to the authentication server 31 and the approval server 32 as the credit authentication device 3 via the dedicated line or the network 4 such as the Internet, and performs communication for authentication and approval of the credit number. Therefore, the decision on the purchase of the content by the client 2 is made not through (the installer of) the content server 1 but through the credit company. In addition, authentication of an individual using the client 2 is performed not through the content server 1 but through a credit company that makes a decision. More specifically, when a credit number is input, a request is made to the authentication server 31 for authentication, and a response is obtained. A request is made to the decision server 32 for a decision using the credit number, and a response is obtained.

FIG. 2 is a configuration diagram of a content server.
1 shows a configuration of a content server 1 which is a content distribution device 1 according to the present invention.

The content server 1 includes a purchase processing unit 11
It comprises an encryption processing unit 12, an authentication processing unit 13, and a history processing unit 14. Each of these processing units 11 to 14 executes a processing program existing on a main memory (not shown) of the content server 1 as a computer by using a CP of the content server 1.
U (Central Processing Unit, not shown). The content server 1 includes a content file 15, a browser file 16, and a history file 17. The content file 15 stores a plurality of contents 151. Each of the contents 151 is 1
Individual files. Browser file 16 is
Content 151 encrypted by encryption processing unit 12
The browser 161 for browsing is stored. The history file 17 stores distribution history information. A known communication device (not shown) is provided separately from the above, and performs actual communication with the client 2 via the network 4.

The purchase processing unit 11 requests the client 2 to input a selection of the content 151 desired to be purchased, and receives the selection. Further, the purchase processing unit 11 provides the client 2 who wants to purchase the content 151 with the client 2 who wants to purchase the content 151,
Requests input of the personal number information and receives it.

In this example, a credit number is used as personal number information.
51 is encrypted). That is, the credit number input by the client 2 for the approval is used as the encryption key. The purchase processing unit 11 requests the client 2 who wants to purchase the content 151 to input a credit number for a decision (and authentication for that). The personal number information may be any information that can identify an individual and may cause damage to the individual by being known to others, and a credit number also corresponds to this. Here, the credit number includes not only a so-called credit card number but also various numbers (decision numbers) used for decision.

The personal number information is not limited to a credit number, but may be other personal information. That is, when there is no particular need to connect to the authentication server 31 and the approval server 32, as the personal number information, for example, a bank account number,
A life insurance number, a health insurance number, a driver's license number, or the like may be used. In other words, any information may be used as long as the individual can be identified and the individual may be damaged by being known to another person. In this case, the purchase processing unit 11 inputs personal information when the content 151 is purchased.
, The encryption processing unit 12 encrypts the content 151 using the personal information.

The authentication processing unit 13 performs an authentication process for the purchase of the content 151 by using the personal number information input for the purchase from the client 2 and used for the decision. More specifically, the authentication processing unit 13 uses a credit number, which is personal number information, to determine whether or not the individual can be authenticated. Contact Thereby, the client 2 (user individual)
Authenticate. Therefore, when authentication is performed by referring to the authentication server 31, the encryption processing unit 12 encrypts the content 151 using the authenticated personal number information. For this purpose, the authentication processing unit 13 notifies the encryption processing unit 12 of the result of the authentication.

The encryption processing unit 12 reads the content 151 selected (purchased) by the client 2 from the content file 15 and encrypts the content 151 by a known encryption process using personal number information as an encryption key. And obtains the encrypted content 152. The personal number information is input from the client 2 to purchase the content 151 and is used for the decision. In this example, since the personal number information includes a credit number, the credit number is used as an encryption key. The encryption processing unit 12 adds a credit number 153, which is personal number information, to the encrypted content 152, as shown in FIG. Therefore, the encrypted content 152 includes the personal number information used for the encryption. The encryption processing unit 12 creates a distribution file 18 including the content 152 to which the encrypted personal number information is added and the browser 161. The distribution file 18 includes the content 151 and the browser 16.
1 is also included in the client 2. Then, the encryption processing unit 12
The encrypted content 152 is distributed. That is,
In practice, the encrypted content 152 and the browser 16
1 is delivered.

In this example, as shown in FIG. 3A, the content 151 is composed of, for example, a still image, particularly a large image with high definition. That is, one content 15
1 has an information amount that cannot be transmitted at one time depending on the network 4 to which the content server 1 is connected. For example, it has an information amount of about 80 MB (megabyte). Therefore, one content 151 includes a plurality of blocks 151 ′ (B11 to Bmn) as indicated by a solid line in FIG.
And each of the blocks 151 ′ has an amount of information that can be transmitted by the network 4 at one time. Each of the blocks 151 ′ has an information amount of, for example, about 512 bytes × 256 bytes (which may be larger or smaller). Therefore, the encryption processing unit 12 outputs the content 15
1 is encrypted for each block 151 ′, and the purchase processing unit 11
It is distributed to the client 2 for each 2 ′ (encrypted block).

In this case, dozens to hundreds of encrypted blocks 15 as one content 152 (or 151)
During distribution of 2 ', one or more of the encrypted blocks 152' to be distributed may not be distributed depending on, for example, the state of the network 4. Even if one encryption block 152 ′ is missing, one content 152 (or 15
Since the item 1) is defective, the content 1
52 (or 151) needs to be distributed to the client 2 concerned. For this purpose, a history processing unit 14 is provided.

As shown in FIG. 2B, the history processing unit 14 creates history information of the distribution of the encrypted content 152 and stores it in the history file 17, and for each distribution destination (client 2) to manage. The history information includes, for each client name (ID), a content name (ID) purchased by the client and a transmission (distribution) time (time stamp) thereof, and is created, for example, each time the purchase is performed. Note that the following redistribution conditions may be added as history information for each client or content.

When there is a distribution request for the content 151 from the client 2, the history processing unit 14 searches the history file 17 and, when the distribution request satisfies a predetermined condition (re-distribution condition). , The authentication processing unit 1
Notify 3. When there is a notification, the authentication processing unit 13 does not request the approval server 32, which is an external means of the content distribution apparatus 1, for approval. If there is no such notification (that is, if the redelivery condition is not satisfied), the authentication processing unit 13
Requests the approval server 32 for an approval.

The re-distribution condition is, for example, a condition such as "within 24 hours" from the previous distribution. This allows
If the previous distribution has failed, the client 2 can have the same content 151 distributed again without any decision (free of charge) within 24 hours from the distribution. The redelivery condition may be, for example, two days, one week, one month, or the like in addition to the above conditions.
The number of times may be five or five.

FIG. 4 is a client configuration diagram showing the configuration of the client 2 which is the content browsing apparatus 2 according to the present invention.

The client 2 includes a display device 20, a purchase content selection processing unit 21, a download processing unit 22, an installation processing unit 23, and a display content selection processing unit 2.
4, a credit number display processing unit 25 and a content display processing unit 26 are provided. Each of these processing units 21 to 26 is realized by executing a processing program present on a main memory (not shown) of the client 2 as a computer by a CPU (not shown) of the content server 1. In particular, the program that implements the installation processing unit 23 is a processing program included in the distribution file 18 distributed from the content server 1. The display content selection processing unit 24, the credit number display processing unit 25, and the content display processing unit 26 are realized by executing the browser 161 included in the distribution file 18 distributed from the content server 1. A known communication device (not shown) is provided separately from the above, and performs actual communication with the content server 1 via the network 4.

The client 2 includes a download data file 27, a browser file 28, and a purchase content file 29. The download data file 27 stores data (delivery file 18) downloaded from the content server 1. The browser file 28 stores a browser 161 for browsing the content 152 encrypted by the encryption processing unit 12. The purchase content file 29 includes one or more contents 152 (regularly) purchased by the client 2.
(Or 151) is stored.

The purchase content selection processing unit 21 accesses the content server 1 via the network 4, calls a content 151 selection screen from the home page, and selects the content 151 to be purchased by the client 2. And input a credit number for making a decision on the purchase from a credit number etc. input screen. The screen is displayed on the display device 20.
(Hereinafter the same).

FIG. 5A shows a screen for selecting the content 151. The content 151 selection screen is transmitted from the content server 1 and displays, for example, a list of content names. The client 2 (user) clicks a purchase button in a state where one or a plurality of content names to be purchased are highlighted. Thereby, the selection information of the content 151 to be purchased is transmitted to the content server 1.

FIG. 5B shows a credit number etc. input screen. The credit number input screen is transmitted from the content server 1, and includes, for example, a name,
It is a screen for inputting an address, a telephone number, a company name, an expiration date of the credit card, and the like. Client 2
The (user of) transmits the screen to the content server 1 by clicking the transmission button while inputting each item. Thereby, the content server 1
Obtain information such as credit numbers.

The download processing section 22 temporarily stores data (delivery file 18) downloaded (distributed) from the content server 1 via the network 4 in the download data file 27. In this state,
The content 152 is in an encrypted state.

The installation processing section 23 comprises a program 162 for installing the distribution file 18 stored in the download data file 27, and is started by selecting the distribution file 18. The installation processing unit 23 installs the browser 161 of the distribution file 18 in the browser file 28 and installs the encrypted content 152 of the distribution file 18 in the purchase content file 29. If the browser 161 is already stored in the browser file 28, the same version number is discarded, and if the version is revised, the browser 161 is installed.

The browser 161 is distributed together with the encrypted content 152 from the content server 1 from which the encrypted content 152 is distributed. The browser 161 is for browsing the encrypted content 152 using personal number information (in this example, a credit number) input for purchase of the content 151 from the client 2 and used for the decision. .

The browser 161 displays the content 151 based on the encrypted content 152.
At this time, since the content 151 includes the credit number which is the personal number information, the browser 161 displays the content 151 after displaying the credit number which is the personal number information added to the encrypted content 152, for example. To this end, the browser 161 includes a display content selection processing unit 24, a credit number display processing unit 25, and a content display processing unit 26. In addition, content 1
Instead of displaying the personal number information prior to the display of 51, the personal number information may be displayed according to a display instruction of the user of the client 2 (the user who has received the unauthorized copy).

The display content selection processing section 24 displays a list of (one or a plurality of encrypted) contents 152 (names) stored in the purchase content file 29 on the display device 2.
0 (see FIG. 4). The display of this list is, for example, a screen similar to the selection screen of the content 151 in FIG. However, since the purchase button in FIG. 5A is unnecessary, it is omitted.

The individual using the client 2 who has seen this selects one of the encrypted contents 152. The credit number display processing unit 25 displays, on the display device 20, the credit number 153 that is personal number information included in the selected encrypted content 152. The time of this display is set to a time at which the credit number 153 can be reliably visually recognized, for example, about 2 to 4 seconds. FIG. 5C shows a credit number display screen. On the screen, the credit number used to purchase the content 151 is clearly displayed together with the indication that the credit number is used. In the case of personal information other than a credit number, the type of the personal information (for example, a bank account number) is similarly displayed. Thereafter, the content display processing unit 26 decompresses the selected encrypted content 152 and displays the same content as the original content 151 on the display device 20.
To be displayed.

FIGS. 6 and 7 are flow charts of the content server processing, and show the processing executed by the content server 1 integrally.

In FIG. 6, the contents server 1
Upon receiving the RL, the homepage is transmitted to the client 2 (step S11). When the search for the content 151 is selected on the homepage, the purchase processing unit 11
The search content 151, that is, the screen of FIG. 5A is transmitted to the client 2 (step S12), and it is checked whether or not the purchase button is clicked (step S1).
3). If not clicked, step S12 and subsequent steps are repeated.

When clicked, the purchase processing unit 11
Screen for application for purchasing content 151, ie, FIG.
The screen of (B) is transmitted (step S14), and it is checked whether a credit number or the like has been input (step S1).
5). If not, wait until it is. When the input is made, the authentication processing unit 13 inquires the approval server 32 using the input credit number, obtains an answer (step S16), and the answer from the approval server 32 is used to authenticate the approval of the purchase. It is checked whether or not there is (step S17). If it is not authentication, the authentication server 31 rejects the decision with the credit number, so the authentication processing unit 13 notifies the client 2 that purchase (distribution) is not possible (step S18), and ends the processing. Step S1
7, the authentication processing unit 13 notifies the encryption processing unit 12 of the authentication, and accordingly, the encryption processing unit 12
Reads out the selected content 151 from the content file 15 and encrypts it using the input credit number (153) (step S1).
9).

In FIG. 7, the encryption processing unit 12 transmits a property screen for the distribution of the selected content 151 to the client 2 (step S20), and checks whether or not there is a response from the client 2 for reception (step S20). Step S21). If there is no response, wait for a response.
If there is a response, the encryption processing unit 12 transmits the encrypted content 152 (Step S22).

Thereafter, the history processing unit 14 creates history information on the distribution of the content 151, stores the history information in the history file 17 (step S23), and searches the history file 17 within 24 hours. It is determined whether or not the same client 2 has purchased the same content 151 (step S24), and if so, the process ends. If not purchased, this is processed by the history processing unit 1
4 notifies the authentication processing unit 13, and in response, the authentication processing unit 13 requests the approval server 32 to approve the purchase amount, obtains a response indicating completion of the approval (step S 25), and ends the processing. I do.

FIG. 8 is a flow chart of the content server processing, and shows the processing executed by the content server 1. In particular,
FIG. 8A shows the encryption processing in step S19, and FIG. 8B shows the transmission processing in step S22.

In FIG. 8A, the encryption processing unit 12
First, an installation program 162, a browser 161, and a credit number 153 are stored in the distribution file 18.
Is stored in the content 151 selected in step S13 from the beginning (B11, B1).
2,..., Bmn) in order.
Is read from the content file 15 (step S
31), the block 151 'is encrypted using a credit number (step S32), and once the distribution file 18
(Step S33). Thereafter, the encryption processing unit 12 checks whether or not the unencrypted block 151 ′ remains in the content 151 (step S3).
4) If it is left, the process from step S31 is repeated, and if it is not left, the encryption process is terminated.

In FIG. 8B, the encryption processing unit 12
Is the installation program 162 stored in the distribution file 18, the browser 161, the credit number 15
3 is transmitted to the client 2, and one encrypted block 152 ′ is extracted from the distribution file 18 and transmitted to the client 2 in order from the top (step S 3).
5) It is checked whether or not the untransmitted (encrypted) block 152 ′ remains in the distribution file 18 (step S).
36) If there is any remaining, repeat steps S35 and subsequent steps.
If not, the transmission (delivery) process ends. In addition,
Block 152 ′ encrypted in step S32
May be transmitted to the client 2 each time.

FIG. 9 is a client processing flow.
The processing executed when the client 2 downloads the distribution file 18 (that is, the encrypted content 152) is shown.

The client 2 inputs the URL of the content server 1 (step S41), receives the home page from the content server 1 and displays it (step S42).
Receives the content search screen for searching for the content 151, that is, the screen of FIG. 5A, and displays it (step S43). Upon seeing this, the user of the client 2 selects the content 151 to be purchased (step S44) and clicks the purchase button (step S45). Based on this, the purchased content selection processing unit 21 notifies the content server 1 of the selected content 151.

In response, the purchase content selection processing unit 21 receives the application screen transmitted by the content server 1, ie, the screen shown in FIG. 5B, and displays it (step S46). Upon seeing this, the user of the client 2 inputs the credit number and its expiration date together with the address, name, telephone number, company name, etc. (step S4).
7). Based on this, the purchase content selection processing unit 21
Stores the entered credit number etc. in the content server 1
Notify.

The download processing unit 22 checks whether or not there is an authentication response from the content server 1 (step S).
48) If not authenticated, the process ends. If the user is authenticated, the download processing unit 22 stores the purchased content 151 in the temporary storage location (download data file 2).
After specifying (7) (step S49), purchase is executed. That is, the encrypted content 152 is downloaded and stored in the designated temporary storage destination (step S50).

FIG. 10A is a flowchart of the client process, and shows a process executed when the distribution file 18 (that is, the encrypted content 152) downloaded by the client 2 is installed.

When the download data file 27 is selected, the installation processing unit 23 is started, and the file stored in the temporary storage destination is executed by downloading (step S51). The user of the client 2 stores the (final) storage destination of the encrypted content 152 and the browser 161 (the browser file 28 and the purchased content file 2).
When 9) is specified (step S52), the installation processing unit 23 displays a property screen for the storage, and when the user inputs a credit number on the displayed property screen (step S53), the installation destination is stored in the specified storage destination. The encrypted content 152 and the browser 161 are installed (step S54), and the process ends. The input of the credit number by the user may be omitted.

FIG. 10B is a flowchart of the client process, showing a process in which the client 2 displays the encrypted content 152.

The user of the client 2 requests the browser 1
When the browser 61 is activated (step S56), the browser 16
The first display content selection processing unit 24 displays a selection screen for the content 151 stored in the purchase content file 29 (step S57), and when the user selects the encrypted content 152, the credit number display processing unit 2
5 displays the credit number, that is, the screen of FIG. 5C (step S58), and thereafter, the content display processing unit 26 decompresses the encrypted content 152 and displays the actual content 151. (Step S59).

Although the present invention has been described with reference to the embodiments, the present invention can be variously modified within the scope of the gist.

For example, in the content search screen (the screen shown in FIG. 5A) displayed in step S43,
Instead of the content name, a simplified image (for example, a thumbnail image) of the content 151 may be displayed. In step S18, when notifying the purchase of the content 151 is displayed and displayed, a simplified image (for example, a thumbnail image) of the content 151 may be displayed. In step S58, instead of or prior to the display of the credit number, the credit number is input each time, and it is determined whether or not the credit number matches the credit number added to the encrypted content 152. The content 151 may be displayed only in this case.

[0061]

As described above, according to the present invention,
In the content distribution apparatus, the content is encrypted using personal number information used for the decision of the client (individual) who received the distribution, so that the encrypted content is copied and given to another person. Can be entrusted to the other person, and the personal number information such as the credit number can be known to others and the individual can be damaged. It is possible to mentally suppress the illegal copying of the distributed individual without using the creativity technology.

Further, according to the present invention, in the content browsing apparatus, the encrypted content is copied by temporarily displaying the personal number information used for the decision of the client (individual) who received the distribution. When given to another person, the personal number information such as their own credit number can also be entrusted to the other person, so the personal number information such as the credit number is known to another person and the individual may be damaged. Thus, even without using a special encryption technology, it is possible to mentally suppress illegal copying by the distributed individual.

Further, according to the present invention, it is possible to provide a content distribution system having the above-described content distribution device and content browsing device, and a program recording medium for realizing the content distribution device and content browsing device.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a content distribution system.

FIG. 2 is a configuration diagram of a content server.

FIG. 3 is an explanatory diagram of a content server.

FIG. 4 is a diagram illustrating a client configuration.

FIG. 5 is an explanatory diagram of a screen.

FIG. 6 is a content server processing flow.

FIG. 7 is a content server processing flow.

FIG. 8 is a content server processing flow.

FIG. 9 is a client processing flow.

FIG. 10 is a client processing flow.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Content server 2 Client 11 Purchase processing part 12 Encryption processing part 13 Authentication processing part 14 History processing part

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G06F 13/00 540 G06F 13/00 540S

Claims (13)

[Claims] 1. An authentication processing unit for performing authentication processing using personal number information input for purchase and used for the decision on the purchase of the content, and encrypting the content using the personal number information And a cryptographic processing unit for encrypting and distributing. 2. The content distribution apparatus according to claim 1, wherein the encrypted content includes the personal number information used for the encryption. 3. The content distribution apparatus according to claim 1, wherein the personal number information is a credit number. 4. The content distribution device further includes: a content file storing the content; and a browser file storing a browser for browsing the content encrypted by the encryption processing unit. The content distribution device according to claim 1, wherein the encryption processing unit creates and distributes a distribution file including the encrypted content and the browser. 5. The content has an information amount that cannot be transmitted at one time depending on a network connected to the content distribution device, is divided into a plurality of blocks, and each of the blocks can be transmitted once by the network. 5. The content distribution device according to claim 4, wherein the content is an information amount, and the encryption processing unit encrypts the content for each of the blocks and distributes the content for each of the blocks. 6. The authentication processing unit performs authentication by referring to an authentication unit external to the content distribution device about whether the individual can be authenticated using the personal number information, and the encryption processing unit 2. The content distribution apparatus according to claim 1, wherein, when the content is authenticated by an inquiry to the external authentication means, the content is encrypted using the authenticated personal number information. 7. The content distribution apparatus further manages a distribution history of the encrypted content for each distribution destination, and when a predetermined condition is satisfied, sends the history to the authentication processing unit. 7. The content distribution device according to claim 6, further comprising a history processing unit for notifying, wherein the authentication processing unit does not request a decision making unit outside the content distribution device for a decision when the notice is given. 8. A program recording medium in which a program for realizing a content distribution device is recorded in a computer-readable manner, wherein the program stores personal number information input for purchase of content and used for approval thereof. A program recording medium that causes the content distribution device, which is the computer, to execute an authentication process of performing authentication using the personal number information and an encryption process of encrypting and distributing the content using the personal number information. 9. Using personal information which is input when purchasing content and which can identify the individual and may cause damage to the individual due to being known to another person, A content distribution device comprising an encryption processing unit for encrypting. 10. A content for browsing content containing personal number information, which is input using the personal number information used for making a decision by inputting the content from the content browsing apparatus and used for the decision. A content browsing device comprising a browser, wherein the browser displays the personal number information and displays the content based on the encrypted content. 11. The content browsing apparatus according to claim 10, wherein the browser is distributed together with the encrypted content from a distributor of the encrypted content. 12. A program recording medium in which a program for realizing a content browsing device is recorded in a computer-readable manner, wherein the program is a personal number input for purchase of content from the content browsing device and used for approval thereof. A process of browsing content that is encrypted using information and that includes the personal number information. After displaying the personal number information, displaying the content based on the encrypted content A program recording medium that causes the content browsing device, which is the computer, to execute the process. 13. A content delivery system comprising a content delivery device and a content browsing device interconnected via a network, wherein the content delivery device comprises: a content file storing the content; A browser file for storing a browser for browsing the content, and an authentication process for performing an authentication process for the purchase of the content, using personal number information input for the purchase from the content browsing apparatus and used for the decision. And encrypting the content using the personal number information,
An encryption processing unit that adds the personal number information thereto, creates a distribution file including the encrypted content to which the personal number information is added, and the browser, and distributes the distribution file; Comprising the browser distributed from a content distribution device, wherein the browser displays the personal number information added to the encrypted content, and displays the content based on the encrypted content A content distribution system, characterized in that: