KR20010062821A - The method of coding word for publications and electronic books on internet and its system - Google Patents

Abstract

PURPOSE: A method and system for encoding publications and electronic books on the Internet are provided to prevent an illegal utility through a hacking by preventing data of publications and electronic books from being copied and illegally being used. CONSTITUTION: A user connects to a server computer through the Internet(S1). A user identification is performed(S2). A data catalog of a work is transmitted to the user(S3). The user can search data and select whether a subscription to publications or electronic books(S4). It is asked whether there's a decoding program and a display program in a user computer(S5). The server computer transmits the decoding program and the display program to the user computer(S6). A part of the work selected is partially encoded(S7). Data partially encoded are transmitted to the user computer through all sorts of network(S8). In case that the data is received to the user computer(S9), the data encoded are decoded and outputted to a screen of the user computer(S10). It is asked whether a process is continued(S11).

Description

The method of coding word for publications and electronic books on internet and its system

The present invention relates to a method and system for encrypting publications and e-books on the Internet, and partially encrypts only a part of data to be sent and received, providing security against illegal data leakage while reducing encryption time and decryption time. The present invention relates to a method and system for encrypting publications and electronic books on the Internet, which makes copyright protection difficult by manipulating data.

Conventionally, the following methods are provided as methods for providing publications and electronic books in the Internet or PC (PC) communication.

In other words, the first method is to make the data into a file so that the user can receive it, the second method is to send letters or sentences of the part whenever the user wants to see, and the third method is to format the data into image data. Finally, the fourth method is to encrypt and transmit the entire data.

To explain this in more detail, the first method is to search the list of desired data in the service room operated by the service provider after the user connects to the Internet or PC communication. In this way, the received file is read using a reading program of the user's computer.

However, once the data has been sent to the user, the service provider cannot impose any restrictions on the transmitted data, so the data in this file format is easy to copy and disseminated best. This method, which can be distributed, is most likely to infringe copyright rights.

In addition, the second method is a method in which a user receives page data from a service provider and reads it on his or her screen after accessing the Internet or PC communication. It is a way to transfer data little by little whenever it is requested.

That is, rather than the first method, the user is somewhat restricted to protect the copyright.

However, if the user saves to a file using this method, like the first method, the right of copyright may be violated.

In addition, the third method is a method in which a user receives and reads image data corresponding to a desired page from a service provider after connecting to the Internet or PC (PC) communication. This method allows a service operator to manage each page data as image data. Done.

This third method is generally difficult to spread due to its larger capacity for users to copy and own than the two methods described above.

However, the service provider has to make the data into image data one by one, and the created data also has a disadvantage in that the capacity is large, and the amount of data exchanged with the user increases, thereby degrading the performance of computer communication.

On the other hand, the fourth method was developed as a conventional method for solving the problems, and this fourth method is a method of encrypting all data to be transmitted by the service provider to the user.

In other words, the service provider operates by encrypting all data before transmission and allowing the user to decrypt and view the received data.

However, the method of encrypting and transmitting the entire data has a problem that it takes a long time to encrypt the entire data before the service provider transmits the data, the user takes a long time to decrypt before reading.

In addition, there is still a possibility of infringing copyright by owning the data once decrypted.

An object of the present invention for solving the above problems is to prevent the publishers or authors to provide their works through the Internet by preventing the illegal distribution or distribution of data of publications and electronic books on the Internet. In addition, the present invention provides a method and system for encrypting publications and electronic books on the Internet that can prevent illegal use through hacking.

In addition, another object of the present invention, by partially encrypting the data sent and received, can reduce the time taken by encryption and decryption, reduce the amount of data and at the same time provide security against illegal use during transmission, service users Provides a method and system for encrypting publications and e-books on the Internet that allows users to restrict the illegal use of users by displaying the shape of image data that is difficult to materialize on the screen and to protect the intellectual property rights of publishers and authors on the Internet. Is in.

1 is a conceptual diagram illustrating an encryption system for publications and electronic books on the Internet according to a preferred embodiment of the present invention.

2 is a block diagram illustrating a method for encrypting a publication and an electronic book on the Internet of the present invention.

3 is a flowchart illustrating a method of encrypting a publication and an electronic book on the Internet according to a preferred embodiment of the present invention.

4 is a flowchart illustrating an example of the encoding step of FIG. 3 in more detail.

5 is a flowchart illustrating an example of a decoding step of FIG. 3 in more detail.

FIG. 6 is a diagram illustrating an example in which a position to encrypt in FIG. 4 is selected by a sequence selection method.

In order to achieve the above object, a method of encrypting a publication and an electronic book on the Internet of the present invention comprises at least one user computer and a server computer connected through the Internet to encrypt the publication and the electronic book. Only part of the data of the publication and the e-book is encrypted so that it can be decrypted and transmitted to the user's computer.

On the other hand, the method for encrypting a publication and an electronic book on the Internet of the present invention for achieving the above object, in the method for encrypting the publication and the electronic book with at least one user computer and a server computer connected through the Internet, The server computer includes an authentication program for authenticating a user, an encryption program for encrypting a publication and an electronic book, a user information database for storing information about the user, and a book information database for storing information about the publication and the electronic book. The user computer includes a decryption program for decrypting the encrypted data, a viewing program for displaying the decrypted data on the screen, and (a) the publication and electronic book selected by the user so as to sufficiently lose the value of the data. Select a portion of the entire text for An encoding step of partially encrypting only the selected data; (b) transmitting partially encrypted cryptographic data to the user computer; And (c) decoding the encrypted data transmitted to the user computer by the decryption program and outputting the encrypted data to the screen of the user computer by the viewing program.

Also, preferably, the step (a) includes a sequence selection method of selecting values of positions to be repeated in a predetermined order, at least when selecting a portion to be encrypted, and a determinant selection method of selecting values of positions corresponding to a predetermined matrix. It is possible to determine the position of the portion to be encrypted by selecting any one or more of a function selection method and a combination thereof, which selects the value of the position corresponding to the determined value of the mathematical function.

In the step (c), it is preferable that the decrypted data is converted into image data so that free editing of the data is not possible, and a background screen having an irregular background pattern is output together on the screen of the user computer.

On the other hand, the encryption system for publications and electronic books on the Internet of the present invention for achieving the above object, the system for encrypting the publications and electronic books with at least one user computer and a server computer connected via the Internet, The server computer includes an authentication program for authenticating a user, an encryption program for encrypting a publication and an electronic book, a user information database for storing information about the user, and a book information database for storing information about the publication and the electronic book. The user computer includes a decryption program that decrypts the encrypted data, selects a portion of the entire contents of the publications and e-books selected by the user so that the value of the data is sufficiently lost, and partially encrypts only the selected data. Having partially encrypted And a controller programmed to transmit the data to the user computer, to decode the data transmitted to the user computer by the decryption program, and to output the data to the screen of the user computer.

Hereinafter, a method and system for encrypting a publication and an electronic book on the Internet according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, as shown in FIG. 1, an encryption system for publications and electronic books on the Internet according to a preferred embodiment of the present invention includes a user computer 10, an Internet 20, and a server computer 30. It is a configuration made.

Here, the server computer 30 is a computer provided in a company which partially encrypts the publication and the electronic book data on the Internet of the present invention and transmits it to a user computer. The server computer 30 includes a controller and a database.

In addition, the user computer 10 is a computer of a person who accesses the server computer 30, receives a decryption program and a viewing program, receives partial encrypted data, decrypts the data, and receives the contents.

In addition, the server computer 30 may further include a manager computer connected to a separate data connection line or network to manage the server computer 30.

The server computer 30 and the user computer 10 are connected to each other through the Internet, which is a kind of computer network. Therefore, user computers connected to the Internet have Internet browsers (Netscape, Internet Explorer, etc.) that can display web contents in the form of HTML, XML, and the like.

On the other hand, the server computer is provided with a control unit and a database necessary to perform the subscription sales of publications and electronic books on the Internet according to the present invention, the control unit is composed of a program, the control unit is a main for operating the entire program In addition to the program 31, an authentication program 32 for authenticating a user, an encryption program 33 for encrypting publications and electronic books, a decryption program 34 for decrypting encrypted data, and decrypted data on the screen A viewing program 35 to be expressed, an image data conversion program 36 for converting the decoded data into a form of image data, and a background program 37 for reproducing a complicated background image.

In this case, the decryption program 34, the viewing program 35, and the like can be copied and transmitted to the user computer 10 in advance so as to be driven by the user computer 10.

In addition, the database includes a user information database 41 storing information about a user, a book information database 42 storing information on publications and electronic books, and a cryptographic information database 43 storing various types of information on passwords. ), A decryption information database 44 for storing various kinds of information about decryption, a wallpaper database 45 for storing a wallpaper, and the like.

As a result, the server computer 30 has a control unit and a database, and is implemented in the form of a website of the World Wide Web on a network such as the Internet 20 to the user.

Therefore, when a user connected to the server computer 30 through the user computer 10 is registered as a member in the user information database 41 by the authentication program 32, the user is authenticated, and the main program If the user selects any one from the list provided along (31), the contents of the book stored in the book information database 42 are partially encrypted by the encryption program 33, and the user is in contact with the decryption program 34. If there is no viewing program 35, the server computer 30 transmits the decryption program 34 and viewing program 35 to the user computer, and then transmits partially encrypted data, and the transmitted encryption data is The decryption program 34 and the viewing program 35 installed in the user computer are decrypted and displayed on the screen.

Here, the data stored in text form in the book information database 42 can be converted into a form of large-capacity, non-editable image data by the image data conversion program 36 so that illegal copying or editing is difficult. It is also possible to combine the background image of a complicated figure with the image data by the background screen program 37 so that it can be displayed on the user computer screen.

In addition, the partially encrypted encrypted data includes encryption information or decryption information of the user who has requested or decrypted the encryption, and stores it in the encryption information database 43 or the decryption information database 44 so as to illegally decrypt it. By analyzing the contents of the duplicated copy, you can track the user who requested or decrypted the encryption.

In addition, the wallpaper program 37 generates a variety of complex wallpapers, and stores them in the wallpaper database and combines them with image data, if necessary to track illegal copyers with only the background of illegally copied contents or information. It can prevent change and use.

Meanwhile, the present invention is an improvement of a method of transmitting and receiving character data on a page basis, a method of transmitting and encrypting image data in the form of image data, and a method of modifying a part of the original data. It's about making data.

In general, there are various ways to create data that is different from the original data. There are many ways to change the order of the original data, add or subtract a certain value, and so on. More details on this encryption can be found in Bruce Schneier's book Applied Cryptography.

Particularly, the partial encryption referred to in the present invention refers to encrypting only a part of the original data, not the entire original data. Encrypting only a part means encrypting only a certain part, regularly encrypting a certain part, or irregularly encrypting a part.

Incidentally, the image data referred to in the present invention refers to image data that is difficult to edit with a word processor.

In general, in order to convert image data into data that is easy to edit by a word processor, a character recognition program may be used to convert the image data into data that can be edited by a word processor. However, the character recognition program has a high recognition rate when there is no background and only letters, but when there is an irregular background as in the present invention, since the character recognition rate is low, many parts need to be typed by hand. This method is difficult to use.

In general, the shape of the image data has a large capacity when stored as it is, making the data difficult to hold and also difficult to distribute. Therefore, in the present invention, when converting to image data, it is difficult to convert the text into easy-to-characterize data by generating a wallpaper with an irregular background pattern together with the text.

In general, the character recognition rate is highest when the character recognition program is black text on a white background. If a pattern or color other than the letter is included, the character recognition rate is remarkably decreased. If the character is recognized in this state, the recognized character appears irregularly, and the remaining parts that do not appear are not known. Do.

In order to restore some recognized data with irregular background to normal data, the data of the unrecognized portion can be completed manually by hand to see the contents. However, since the contents of books such as novels are huge, it takes a lot of time to restore them by hand. Therefore, the unauthorized copying of books using this method is much more difficult than buying and reading books. Inefficient

In the present invention, the data between the operator and the user is partially encrypted. This is to provide safety even if illegal use (hacking) is performed in the process of being transferred by a third party and even illegal use (hacking) of transmission data temporarily stored in the user's computer by the operator. . The operator has an encoding process that encrypts data before sending it, and the user has a decoding process that decrypts the encrypted data before using it.

When encrypting in the present invention, the entire data to be delivered is not encrypted, but only a portion that can lose the value of a publication or an electronic book, that is, a portion that is regularly or irregularly so that the user does not understand the entire contents of the book. To do that. This not only minimizes the time it takes to encrypt the whole, but also shortens the time it takes to decrypt the encrypted data. In addition to text, the form of picture data also encrypts parts, thereby losing its value as data without encrypting the whole.

Therefore, according to the encryption system of publications and e-books on the Internet of the present invention, even if the user randomly distributes the encrypted data by encrypting the user's information with the data to be transmitted when encrypting, the information of the distributed person can be known. Not only can you keep track of people you spread, but you can also prevent users from distributing at will.

It also prevents the operator from directly controlling the transmitted data for other purposes, so that the transmitted data is not shown in the form of general data but in the form of difficult-to-edit images, thereby preventing illegal copying of the user. It was made.

Therefore, authors who were reluctant to publish their works on the Internet can securely sell their works on the Internet, thereby ensuring a just distribution of their publications and e-books, thereby creating a new revenue structure.

Meanwhile, referring to the method of encrypting a publication and an electronic book on the Internet of the present invention, as shown in FIG. 2, the method of encrypting a publication and an electronic book on the Internet of the present invention may include a publication and Partially encrypting a portion of the data in the e-book and transmitting it to the user's computer, first configuring a server computer capable of encrypting the publication and the e-book on the Internet, and (a) being selected by the user to sufficiently lose the value of the data An encoding step of selecting a portion from the entire contents of the publication and the electronic book, partially encrypting only the selected data, (b) transmitting the partially encrypted cryptographic data to the user computer, and (c) the decryption program. Decrypt the cryptographic data sent to the user's computer by And a decoding step of outputting the same on the screen of the user computer by the program.

Here, the method of selecting the position of the data to be partially encrypted in the step (a) can be largely divided by a method of selection, a determinant selection method and a function selection method.

That is, in the sequence selection method, when selecting a portion to be encrypted, a value of a position repeated in a predetermined order is selected. Examples of a sequence for selecting a cryptographic rate of 50% include 1,3,5,7,9, A sequence selected by the formula can be cited, and for example, Fibonacci sequence developed by the formula 1,2,3,5,8,13 can be used.

In this case, it is not possible to encrypt the copyrighted work using the user information in advance, so the user should select the corresponding copyrighted work. That is, in the related art, when encrypting an entire work using user information, a large load is placed on the corresponding server computer. However, the partial encryption method of the present invention can greatly reduce the load on the server computer.

In other words, since the purpose of encrypting a work is to prevent the illegal use of the work, the work may be partially encrypted and delivered to the user so that the work is not used illegally.

In general, the higher the degree of partial encryption of a work, the lower the recognition rate. Therefore, if 100% encryption is used, recognition rate is 0%. In the case of a publication, if the partial encryption rate is 50%, the perception of the whole in the context is significantly reduced, which is close to encrypting the whole. In this regard, in order to reduce the load on the server, the present invention obtains an effect similar to encrypting the whole by encrypting only a part of the data instead of encrypting all the data.

6 shows a result of partially encrypting an original by applying a sequence selection method, which is a result of partially encrypting original data at 33% and partially encrypting at 50%. In other words, even at 33%, it is difficult to accurately grasp the full meaning of the context. Especially at 50%, it becomes more difficult to grasp the whole meaning.

In other words, in the case of a material such as a publication, it is possible to obtain the same effect as encrypting the whole through partial encryption even without encrypting the whole. The application of this method can be applied not only to publications in the form of letters, but also to pictures and music.

In addition, the determinant selection method is a method of selecting values of positions corresponding to a predetermined matrix. For example, when a 1X10 matrix is viewed, (0, 0, 1, 0, 1, 1, 0, 1, 0, 1) and same. In other words, first, in the first 10 of the data to be partially encrypted, a value corresponding to 1 in this matrix is selected as the location to be partially encrypted.

The method of selecting a functional formula is a method of selecting a value of a position corresponding to a predetermined value of a mathematical function, and is a method of selecting a part of partial encryption using a mathematical function such as a trigonometric function. For example, functions such as Sin (X) and Cos (X) are functions that repeat a constant value periodically. Therefore, partial encryption can be performed by calculating X of a value whose value becomes 0 as a place value. It is.

In addition, various kinds and types of data part selection methods are possible, and such data location selection methods are possible for those skilled in the art to be modified and changed.

On the other hand, if there is no decryption program and viewing program in the user computer, before step (b), it may include transmitting the decryption program stored in the server computer to the user computer.

In addition, in the step (c), when decrypting the encrypted data, the user information and encryption information stored in advance in the server computer must be used to enable complete decryption or to copy the copied data. It is possible to include user information and information related to decryption.

In the step (c), it is preferable that the decrypted data is converted into image data so that free editing of the data is not possible, and a background screen having an irregular background pattern is output together on the screen of the user computer.

On the other hand, when a more specific example of the steps (a) (b) (c) shown in Figure 3 in the form of a flow chart, when the user is connected to the server computer via the Internet (S1), the user's ID and password is received If the ID and password of the user entered as a member matches, the user is authenticated (S2).

Subsequently, when the list of materials for the asset is transmitted to the user who has completed access (S3), the user may search for the desired material in the list of transmitted materials, and may select this if he / she wants to subscribe to the searched publication or the e-book (S4). .

Subsequently, the user computer is asked whether there is a decryption program and a viewing program (S5), and if there are no such programs, the server computer transmits the decryption program and the viewing program to the user computer (S6).

Subsequently, only a part of the selected work is partially encrypted (S7), and the partially encrypted data is transmitted to the user computer through various networks such as the Internet or PC communication (S8).

Subsequently, when the partially encrypted data is received at the user's computer (S9), the decryption program and the viewing program are automatically started to decrypt the partially encrypted data to restore the original data, and output the same to the screen of the user's computer. (S10).

At this time, the original data to be restored is displayed in the form of image data together with a background of a complicated pattern, and information about encryption or decryption during restoration, for example, personal information about the user who requested encryption, and information about the decrypted user. Personal information may be included to enable illegal piracy tracking.

After that, it is asked whether to continue (S11) to allow the user to search or select other data (S4).

Herein, the step S7 (encoding step) will be described in more detail. As shown in FIG. 4, a method of selecting a portion of the asset data to be delivered to the user computer (S71) and a location for partial encryption will be described. Choose.

That is, the method of selecting a position to be partially encrypted includes selecting any one of the above-described sequence selection method, determinant selection method, and function selection method by overlapping each other (S72).

Subsequently, the location of the data to be partially encrypted is determined using the selected method (S73), and the data is encrypted using an existing encryption method using data and user information corresponding to the area to be partially encrypted. At this time, the encryption method may be used all the methods described in the book of Applied Cryptography.

In addition, when the step S10 (decoding step) is described in more detail, as shown in FIG. 5, when the user receives the partially encrypted asset data from the server computer (S101), the location of the partially encrypted data is selected. A method is selected (S102).

Here, the method of selecting the partially encrypted position is made by selecting one of the three methods described above, and the method should be the same as the method of selecting the partially encrypted data in the server computer.

Subsequently, when a method of selecting the location of the partially encrypted data is selected, the location of the partially encrypted data is designated using this method (S103), and the original data is restored by analyzing the designated portion (S104).

Each of the above processes can be changed or changed in order when it is convenient to perform the encryption method of the publication and the electronic book on the Internet of the present invention.

That is, the present invention is not limited to the above-described embodiment, and of course, modifications can be made by those skilled in the art without departing from the spirit of the present invention.

For example, in the embodiment of the present invention, an example of 33 percent and 50 percent partial encryption is used, but in addition to more than 0 percent, the partial encryption of the present invention is applied to all kinds of data such as images, voices, and videos that are not necessarily textual data. It can be applied.

Therefore, the scope of the claims in the present invention will not be defined within the scope of the detailed description, but will be defined by the following claims and the technical spirit thereof.

As described above, according to the method and system for encrypting a publication and an electronic book on the Internet of the present invention, the publisher or the author can copy his or her work on the Internet by preventing the data of the publication and the electronic book from being copied and distributed illegally. It can be provided through the network, and can prevent illegal use through hacking, and by partially encrypting the data sent and received, it can shorten the time taken by encryption and decryption, reduce the amount of data and illegally during transmission. Provides safety for use, and displays the shape of image data that is difficult to characterize on the screen of the service user, thereby limiting illegal usefulness of the user and protecting the intellectual property of the publisher or author on the Internet. will be.

Claims (8)

A method of encrypting a publication and an electronic book, comprising at least one user computer and a server computer connected via the Internet, the method comprising: A method for encrypting a publication and an electronic book on the Internet, characterized in that only a portion of the data of the publication and the electronic book are partially encrypted and transmitted to the user computer for decryption on the user's computer. A method of encrypting a publication and an electronic book, comprising at least one user computer and a server computer connected via the Internet, the method comprising: The server computer includes an authentication program for authenticating a user, an encryption program for encrypting a publication and an electronic book, a user information database for storing information about the user, and a book information database for storing information about the publication and the electronic book. The user computer includes a decryption program for decrypting the encrypted data, a viewing program for displaying the decrypted data on the screen as an image, (a) encoding a portion of the entire contents of the publication and the electronic book selected by the user so as to sufficiently lose the value of the data, and partially encrypting only the selected data; (b) transmitting partially encrypted cryptographic data to the user computer; And (c) decoding the encrypted data transmitted to the user computer by the decryption program and outputting the encrypted data to the screen of the user computer by the viewing program; Encryption method for publications and electronic books on the Internet, characterized in that comprises a. The method of claim 2, In the step (a), at least when selecting a portion to be encrypted, a sequence selection method of selecting values of positions repeated in a predetermined order, a determinant selection method of selecting values of positions corresponding to a predetermined matrix, and a predetermined mathematical function A function selection method for selecting a value of a position corresponding to a value, and a method for encrypting a publication and an electronic book on the Internet, characterized in that at least one of the combination thereof is selected to determine the position of the portion to be encrypted. The method of claim 2, And transmitting the decryption program stored in the server computer to the user computer before step (b). The method of claim 2, In the step (c), when decrypting the encrypted data, the encryption method of the publication and the electronic book on the Internet, characterized in that complete decryption is possible only by using the user information and encryption information stored in advance on the server computer. The method of claim 2, Step (c) is a method for encrypting publications and electronic books on the Internet, characterized in that the decrypted data includes information related to user information and decryption to enable tracking of the replicated data. The method of claim 2, In the step (c), the decoded data is converted into a form of image data so that free editing of the data is not possible, and a publication with an irregular background pattern is output on the screen of the user computer. And encryption method of the electronic book. Claims [1] A system for encrypting a publication and an electronic book, comprising at least one user computer and a server computer connected via the Internet. The server computer includes an authentication program for authenticating a user, an encryption program for encrypting a publication and an electronic book, a user information database for storing information about the user, and a book information database for storing information about the publication and the electronic book. The user computer includes a decryption program for decrypting the encrypted data, Select a portion of the entire contents of the publications and e-books selected by the user to partially lose the value of the data, partially encrypt only the selected data, transfer the partially encrypted data to the user's computer, and decrypt the program And a control unit programmed to decrypt the data transmitted to the user's computer and output the same to a screen of the user's computer.