JP2004173042A - Information processor and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information processor and a program which guarantees high level of security by utilizing the electronic watermark information embedded in the image data constituting a picture of an application, for execution of the application. <P>SOLUTION: The information processor and the program make a computer execute an input acceptance step of accepting operation indications of the program, an electronic watermark information extraction step of extracting electronic watermark information from stored image data, a picture output step of utilizing image data to construct a picture and outputting the picture, and an embedded information processing step of processing electronic watermark information extracted in the electronic watermark information extraction step. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a program for processing digital watermark information embedded in image data.
[0002]
[Prior art]
Conventionally, as a technique for protecting digital contents from unauthorized use, there is a digital watermarking technique (see Non-Patent Document 1). The information embedded in the digital watermark is called digital watermark information. The digital watermark information is embedded in image data or music data, and protects digital contents from unauthorized copying or tampering. Non-Patent Document 1 describes that there are various methods for embedding digital watermark information.
[0003]
[Non-patent document 1]
Tsukasa Ono, "Digital Watermarking and Content Protection," Ohmsha, February 14, 2001, P2-41.
[0004]
[Problems to be solved by the invention]
However, according to the above-described related art, digital watermark information is embedded in digital content to be protected.
[0005]
Further, the digital content to be protected is separately subjected to processing such as encryption, and it is difficult for the digital content to be decrypted even if stolen. On the other hand, an excellent malicious technician can decipher a cipher or illegally use digital content regardless of digital watermark information.
[0006]
[Means for Solving the Problems]
Therefore, the first invention provides a computer with an input receiving step of receiving an operation instruction of a program, a digital watermark information extracting step of extracting digital watermark information from stored image data, and displaying a screen using the image data. A program for executing a screen output step for constructing and outputting and an embedded information processing step for processing the digital watermark information extracted in the digital watermark information extracting step, and the image data forming the screen of the application by such a program. By using the digital watermark information embedded in the application for executing the application, security can be highly secured.
[0007]
Further, a second invention provides an input accepting step of accepting an operation instruction of a program in a computer, and an index which is digital watermark information serving as index information of another digital watermark information from one stored image data. A digital watermark information extracting step of extracting digital watermark information and extracting digital watermark information from one or more image data based on the index digital watermark information, and constructing a screen using the stored one or more image data A screen output step for outputting the digital watermark information, and an embedded information processing step for processing the digital watermark information extracted in the digital watermark information extracting step. Image data as digital watermark information Will be embedded can be more highly ensure security.
[0008]
Further, a third invention is a program for causing a computer to further execute an information conversion step of converting digital watermark information according to a predetermined rule, and the embedded information processing step is a program for processing the information converted in the information conversion step. Such a program makes it difficult for a malicious third party who has acquired the digital watermark information to understand the meaning of the digital watermark information and to analyze the information.
[0009]
Furthermore, the fourth invention is image data that is not used by the program, and further stores encrypted image data. According to the invention, a malicious third party can use the image data, Even if the program is stolen, it is considered that the confidential information is hidden in the encrypted image data, and the encrypted image data is analyzed. Therefore, confidential information is less likely to leak.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of an information processing system and an information processing apparatus will be described with reference to the drawings. Note that components denoted by the same reference numerals in the embodiments perform the same operation, and thus the description thereof may not be repeated.
[0011]
(Embodiment 1)
FIG. 1 is a conceptual diagram of an information processing system according to the present embodiment. The information processing system includes an information processing device 11 and a server device 12. The server device 12 holds image data and programs. Digital watermark information is embedded in the image data. The information processing device 11 receives image data and a program from the server device 12, and the program reads digital watermark information in the image data and performs an operation.
[0012]
FIG. 2 is a block diagram of the information processing system according to the present embodiment. The information processing apparatus 11 includes a communication unit 1101, an image data storage unit 1102, a program storage unit 1103, an input reception unit 1104, a digital watermark information extraction unit 1105, a screen construction unit 1106, and a digital watermark information processing unit 1107. The server device 12 includes a second image data storage unit 1201, a second program storage unit 1202, and a second communication unit 1203.
[0013]
The communication unit 1101 receives image data or a program from the server device 12 and stores the image data or the program in the image data storage unit 1102 and the program storage unit 1103, respectively. The communication unit 1101 can be generally realized by wireless or wired communication means. The communication unit 1101 can also be realized by means for receiving a broadcast.
[0014]
The image data storage unit 1102 stores one or more image data in which digital watermark information is embedded. The image data storage unit 1102 is preferably a non-volatile recording medium, but may be a volatile recording medium.
[0015]
The program storage unit 1103 stores a program. The program storage unit 1103 is preferably a non-volatile recording medium, but may be a volatile recording medium.
[0016]
The input receiving unit 1104 receives an operation instruction for operating the program and an input to another application. The operation instruction may be received from a menu screen, or may be input means such as a keyboard and a mouse. The input receiving unit 1104 is realized by, for example, mouse driver software or the like.
[0017]
The digital watermark information extraction unit 1105 extracts digital watermark information from the image data in the image data storage unit 1102. The digital watermark information extraction unit 1105 knows in advance how the digital watermark information is embedded in the image data. The digital watermark information extracting unit 1105 can be generally realized by an MPU, a memory, or the like. The processing procedure for extracting information by the digital watermark information extraction unit 1105 is usually realized by software, and the software is recorded on a recording medium such as a hard disk. However, it may be realized by hardware (dedicated circuit).
[0018]
When the input receiving unit 1104 receives a program operation instruction, the screen construction unit 1106 configures and outputs a screen of an application using the image data stored in the image data storage unit 1102. The image data may be an image representing the entire screen or an image representing a part of the screen such as a button. Output is typically output to a display. The screen construction unit 1106 can be generally realized by an MPU, a memory, or the like. The processing procedure for configuring and outputting the screen by the screen construction unit 1106 is generally realized by software, and the software is recorded on a recording medium such as a hard disk. However, it may be realized by hardware (dedicated circuit).
[0019]
When the input receiving unit 1104 receives a program operation instruction, the digital watermark information processing unit 1107 processes the digital watermark information extracted by the digital watermark information extracting unit 1105. The processing content of the digital watermark information does not matter. The digital watermark information processing unit 1107 can be generally realized by an MPU, a memory, or the like. The processing procedure for the digital watermark information processing unit 1107 to process the digital watermark information is generally realized by software, and the software is recorded on a recording medium such as a hard disk. However, it may be realized by hardware (dedicated circuit).
[0020]
Note that the program in the program storage unit 1103 normally performs the operations of the digital watermark information extraction unit 1105, screen construction unit 1106, and digital watermark information processing unit 1107.
[0021]
The second image data storage unit 1201 stores one or more image data in which digital watermark information is embedded. The second image data storage unit 1201 is preferably a non-volatile recording medium, but may be a volatile recording medium.
[0022]
The second program storage unit 1202 stores a program. The second program storage unit 1202 is preferably a non-volatile recording medium, but may be a volatile recording medium.
[0023]
The second communication unit 1203 transmits the image data and the program to the information processing device 11. The second communication unit 1203 can be generally realized by wireless or wired communication means. The second communication unit 1203 can also be realized by broadcasting means.
[0024]
Hereinafter, the operation of the information processing apparatus 11 will be described. The communication unit 1101 of the information processing device 11 receives image data and a program from the server device 12. Then, the image data is stored in the image data storage unit 1102, and the program is stored in the program storage unit 1103. Next, a process when the information processing apparatus 11 receives an operation instruction for operating a program will be described with reference to the flowchart in FIG.
[0025]
(Step S301) The input receiving unit 1104 determines whether or not an input of an operation instruction for operating a program (such as pressing a determination button) has been received. If the input of the operation instruction is received, the process proceeds to step S302, and if the input of the operation instruction is not received, the process returns to step S301.
[0026]
(Step S302) The digital watermark information extraction unit 1105 reads out image data from the image data storage unit 1102.
[0027]
(Step S303) The digital watermark information extraction unit 1105 extracts digital watermark information from the image data read in step S302. Note that the technique for extracting the digital watermark information is a known technique, and thus the description is omitted. Note that there are various methods for embedding digital watermark information, and this is also a known technique.
[0028]
(Step S304) When the operation instruction is received in step S301, the screen construction unit 1106 composes an application screen using the image data read in step S302.
[0029]
(Step S305) The screen construction unit 1106 outputs the screen of the application configured in step S304.
[0030]
(Step S306) The input receiving unit 1104 determines whether an input has been received from the displayed application screen. If an input is received, the process proceeds to step S307, and if not, the process returns to step S306.
[0031]
(Step S307) Processing such as input is performed based on the input received in step S306. When the input is, for example, an input for instructing processing of digital watermark information, the digital watermark information processing unit 1107 processes the digital watermark information extracted in step S303. It returns to step S306. There are various methods for processing the extracted digital watermark information. A specific example will be described below.
[0032]
In the flowchart of FIG. 3, the process is terminated by an instruction to terminate the process or an interrupt such as power off.
[0033]
Hereinafter, specific operations of the information processing system and the like in the present embodiment will be described. Now, the server device holds the image data shown in FIG. Further, the server device separately holds a program. The image data in FIG. 4 is data constituting a screen of an application executed in the information processing apparatus, and has digital watermark information embedded therein. This application is an application for calculating an insurance premium. The digital watermark information is, in this case, a calculation formula for calculating the insurance premium.
[0034]
In addition, the embedded digital watermark information is a calculation formula executed when a decision button on the screen of the application is pressed here. This calculation formula is, for example, “f (x) = (x ₁ + X ₂ × 0.1 + x ₃ ) × 5 / x ₄ Is an expression for obtaining f (x). The calculation formula is a calculation formula using data input from the screen of the application as a parameter. Specifically, this calculation formula is obtained by converting a value input to a field (field 1) next to “disaster surcharge” on the screen of FIG. ₁ The value input to the field (field 2) next to “daily amount” on the screen of FIG. ₂ , The value of “special type” (the value selected from the menu) on the screen of FIG. ₃ 4, the value of the “insurance period” on the screen of FIG. ₄ Is an expression.
[0035]
Further, the program includes a script shown in FIG. 5, a display program for interpreting and executing the script in FIG. 5 to display a screen, and digital watermark information embedded in the image data in FIG. This is a program or the like that performs a process of calculating an insurance premium by adapting a value input from the screen to digital watermark information.
[0036]
The script of FIG. 5 shows the definition of the fields, menus, and buttons on the screen of FIG. “<Field>” indicates the definition of a field. “<Field type = num x = 100 y = 50> field1” is the definition of “field1”. “Type = num” indicates that the input value is a numerical value. “X = 100” and “y = 50” indicate that the field “field1” is arranged at the position of (100, 50) on the screen.
[0037]
“<Menu>” is a definition of a menu, and “<item>” indicates a value of a menu candidate. Therefore, “menu1” can take a value of “1”, “2”, or “3”. Note that x corresponding to the value selected in “menu1” ₃ The value of “menu1” is, for example, “1” when the value of “menu1” is “▲ 1”, “4” when the value of “menu1” is “▲ 2 ▼”, and the value of “menu1” is “▲”. "3" is "9". "Menu1" value and x ₃ The correspondence of the values of is managed separately in a table. Further, “menu2” can take a value of “1 year”, “2 years”, “3 years”, “5 years”, or “10 years”. Also, x corresponding to the value selected in “menu2” ₄ Is a value obtained by removing “year” from the value of “menu2”. “<Button>” indicates the definition of a button. The attribute value “action” in the definition of the button indicates a program to be executed when the button is pressed (selected). Here, when the button defined in the script of FIG. 5 is selected, “execution of the digital watermark information calculation formula” is performed. The program that performs the “execution of the digital watermark information calculation formula” is a part of the program held by the server device. Further, “x = 80” and “y = 230” in the definition of the button indicate that the button is arranged at the position of (80, 230). Further, “text =“ OK ”” indicates that a character string “OK” is displayed on the button.
[0038]
In the above environment, the information processing device receives the image data of FIG. 4 and the program from the server device.
[0039]
Next, the information processing device displays the received image data. Further, the information processing apparatus extracts digital watermark information “f (x) = (x1 + x2 × 0.1 + x3) × 5 / x4” embedded in the image data. Further, the information processing apparatus waits for a user input from the displayed screen.
[0040]
Next, it is assumed that the user selects, for example, “1.5” for “field1”, “1” for “field2”, “1” for “menu1”, and “5 years” for “menu2”. Further, it is assumed that the user inputs the above values in “field1,” “field2,” “menu1,” and “menu2,” and then inputs the “OK” button. In such a case, the information processing apparatus extracts the digital watermark information “f (x) = (x ₁ + X ₂ × 0.1 + x ₃ ) × 5 / x ₄ "X ₁ "X ₂ "X ₃ "X ₄ Is substituted for the value input by the user or the value derived from the user input, and “f (x)” is obtained. Specifically, “f (x) = 2.6” is calculated by “f (x) = (1.5 + 1 × 0.1 + 1) × 5/5”. Then, the information processing apparatus calculates the insurance premium using the digital watermark information embedded in the screen information and the input information, and displays the calculation result of the insurance premium on the screen, for example, as shown in FIG.
[0041]
As described above, according to the present embodiment, high security can be ensured by using digital watermark information embedded in image data constituting a screen of an application for execution of the application. The reasons why security can be highly secured are as follows. In other words, it is difficult for human psychology to consider that there is confidential information in visible information. According to the present embodiment, the image data constituting the screen of the application appears on the surface, and by embedding confidential information as an electronic watermark in the image data, it is possible to acquire more embedded electronic watermark information. It becomes difficult. In other words, even if image data or a program is stolen in the course of communication between the server device and the information processing device, the digital watermark information embedded in the image data constituting the screen used by the application is not analyzed. And the leakage of confidential information can be effectively prevented. The insurance premium calculation formula in the above specific example is know-how unique to the company for the insurance company, and is information that the insurance company does not want to leak.
[0042]
In the present embodiment, the digital watermark information received from the server device is used as it is. However, the digital watermark information may be converted according to a predetermined rule, and the converted information may be processed. For example, when the term “special type” appears in the above calculation formula, the “special type” may be converted to a meaningless symbol such as “a1”. The algorithm for converting the “special type” to “a1” is predetermined, and may be anything. For example, it is possible to perform a process such as casting the "kantai type" of the kanji string to change it to the "numerical type" and wrapping it to 2 bytes. By performing the above-described conversion processing, for example, a malicious third party who has acquired the digital watermark information cannot understand the meaning, and it is more difficult to analyze the information. The same applies to other embodiments.
[0043]
Further, according to the present embodiment, the server device holds only the image data constituting the screen. However, the server device stores the image data which is not used by the program, and may store the encrypted image data. good. In such a case, the information processing apparatus also receives and stores encrypted image data, which is image data not used by the program. By doing the above, even if the malicious third party steals the image data or the program, the malicious third party thinks that the confidential information is hidden in the encrypted image data, and The image data will be analyzed. Therefore, confidential information is less likely to leak. The same applies to other embodiments.
[0044]
Further, according to the present embodiment, the image data in which the digital watermark information is embedded is the image data forming one screen, but the digital watermark information is embedded in a part of the image data forming the screen. Is also good. Specifically, digital watermark information may be embedded in an image of a button constituting a screen, a background image, a partial image of the background image, or the like. The same applies to other embodiments.
[0045]
Also, according to the present embodiment, the information processing apparatus receives and executes image data and programs from the server device. However, the information processing device may store image data and programs in advance. That is, the above-described mechanism may be executed by a stand-alone configuration. The same applies to other embodiments.
[0046]
Further, according to the present embodiment, the application is an application for calculating an insurance premium, but it goes without saying that another application may be used. The same applies to other embodiments.
[0047]
Further, in the present embodiment, the information processing device collectively receives the image data and the program from the server device. However, the information processing apparatus may receive another part of the image data or another part of the program (script) while executing a part of the program (script). For example, the information processing device may access the server device at the timing of switching the screen, and may receive the image data, the program, and the like constituting the next screen one by one. The same applies to other embodiments.
[0048]
Further, the operations described in the present embodiment may be realized by a computer-readable program. The program may be recorded on a recording medium such as a CD-ROM and distributed, may be distributed by network distribution, or may be distributed by broadcasting. The same applies to other embodiments. Note that the program for realizing the operation described in the present embodiment includes a computer, an input receiving step of receiving an operation instruction of the program, a digital watermark information extracting step of extracting digital watermark information from stored image data, A program for executing a screen output step of constructing and outputting a screen using image data and an embedded information processing step of processing the digital watermark information extracted in the digital watermark information extracting step.
[0049]
(Embodiment 2)
FIG. 7 is a block diagram of the information processing system according to the present embodiment. This information processing system includes an information processing device 71 and a server device 12. The server device 12 holds two or more image data and programs. The two or more pieces of image data are image data that configure the screen of the application. Digital watermark information is embedded in each of two or more image data. Further, among the digital watermark information embedded in two or more pieces of image data, one digital watermark information is index information of another digital watermark information. The information processing device 71 receives the image data and the program from the server device 12, the program reads the digital watermark information in the image data, and performs an operation. At that time, first, digital watermark information of the index information is obtained, and other digital watermark information is obtained based on the index information.
[0050]
The information processing device 71 includes a communication unit 1101, an image data storage unit 1102, a program storage unit 1103, an input reception unit 1104, a digital watermark information extraction unit 7105, a screen construction unit 1106, and a digital watermark information processing unit 7107. The server device 12 includes a second image data storage unit 1201, a second program storage unit 1202, and a second communication unit 1203. Note that two or more image data are stored in the second image data storage unit 1201, and digital watermark information is embedded in each of them. The two or more image data are data constituting a screen when the program is executed. Further, among the digital watermark information embedded in two or more pieces of image data, one digital watermark information is index information of another digital watermark information.
[0051]
The digital watermark information extraction unit 7105 extracts digital watermark information from two or more pieces of image data in the image data storage unit 1102. The digital watermark information extracting unit 7105 first obtains digital watermark information (hereinafter, appropriately referred to as “index digital watermark information”) forming an index from one image data. Next, other electronic watermark information is obtained from one or more pieces of image data based on the index electronic watermark information. The digital watermark information extracting unit 7105 can be generally realized by an MPU, a memory, or the like. The processing procedure for extracting information by the digital watermark information extraction unit 7105 is generally realized by software, and the software is recorded on a recording medium such as a hard disk. However, it may be realized by hardware (dedicated circuit).
[0052]
When the input receiving unit 1104 receives a program operation instruction, the digital watermark information processing unit 7107 processes the digital watermark information extracted from the two or more pieces of image data by the digital watermark information extracting unit 7105. The processing content of the digital watermark information does not matter. The digital watermark information processing unit 7107 can be generally realized by an MPU, a memory, or the like. The processing procedure for the digital watermark information processing unit 1107 to process the digital watermark information is generally realized by software, and the software is recorded on a recording medium such as a hard disk. However, it may be realized by hardware (dedicated circuit). Note that the program in the program storage unit 1103 normally performs the operations of the digital watermark information extraction unit 7105, screen construction unit 1106, and digital watermark information processing unit 7107.
[0053]
Hereinafter, the operation of the information processing device 71 will be described. The communication unit 1101 of the information processing device 71 receives two or more image data and programs from the server device 12. Then, the image data is stored in the image data storage unit 1102, and the program is stored in the program storage unit 1103. Next, processing when the information processing apparatus 11 receives an operation instruction for operating a program will be described with reference to the flowchart in FIG.
[0054]
(Step S801) The input receiving unit 1104 determines whether or not an input of an operation instruction for operating a program has been received. If the input of the operation instruction is received, the process proceeds to step S802, and if the input of the operation instruction is not received, the process returns to step S801.
[0055]
(Step S802) Image data in which index digital watermark information is embedded is read from the image data storage unit 1102. Before reading the image data, the information processing apparatus 71 knows what the image data in which the index digital watermark information is embedded. For example, image data in which index digital watermark information is embedded is image data indicating a top screen, and is named, for example, “top”.
[0056]
(Step S803) The digital watermark information extraction unit 7105 extracts index digital watermark information from the image data read in step S802.
[0057]
(Step S804) From the index digital watermark information extracted in step S803, it is determined whether or not the next image data in which the digital watermark information is embedded exists. If there is the next image data in which the digital watermark information is embedded, the process proceeds to step S805. If there is no next image data, the process jumps to step S807.
[0058]
(Step S805) The next image data in which the digital watermark information is embedded is read. It is assumed that the information processing device 71 can determine what the next image data is. Specifically, the file name of the next image data may be included in the index digital watermark information. Further, the numerical value indicating the reading order may be determined so as to constitute the file name.
[0059]
(Step S806) The digital watermark information extraction unit 7105 extracts digital watermark information from the image data read in step S805. It returns to step S804.
[0060]
(Step S807) The screen construction unit 1106 constructs an initial screen of the application using the image data read in step S802.
[0061]
(Step S808) The screen construction unit 1106 outputs an initial screen of the application configured in step S807.
[0062]
(Step S809) The input receiving unit 1104 determines whether an input has been received from the displayed application screen. If an input is received, the process proceeds to step S810, and if not, the process returns to step S309. The input includes an input of data to an application and an input for instructing processing of digital watermark information (for example, pressing of a decision button).
[0063]
(Step S810) Processing such as input is performed based on the input received in step S309. If the input is, for example, an input for instructing processing of digital watermark information (for example, pressing a decision button), the digital watermark information processing unit 7107 processes the digital watermark information extracted in step S806. It returns to step S309. There are various methods for processing the extracted digital watermark information. A specific example will be described below.
[0064]
In the flowchart of FIG. 8, the process is terminated by an instruction to terminate the process or an interruption such as power off.
[0065]
Hereinafter, specific operations of the information processing system and the like in the present embodiment will be described. Now, the server device holds the hierarchized image data shown in FIG. The hierarchized image data shown in FIG. 9 is files “top”, “1-1”, “1-2”, and “1-3”. The image data indicated by the file “top” is image data constituting an initial screen of the application. The file "1-1" is image data constituting a screen displayed when the "personal type" button is selected on the initial screen. The file “1-2” is image data constituting a screen displayed when the “couple” button is selected on the initial screen. The file “1-3” is image data constituting a screen displayed when the “family type” button is selected on the initial screen. Here, the application is an application for calculating an insurance premium.
[0066]
Also, index digital watermark information is embedded in the image data indicated by the file “top”. FIG. 10 shows an example of the index digital watermark information. The index digital watermark information in FIG. 10 has one or more pairs of “file name” and “embedded position of digital watermark information”. The “file name” is a file name in which digital watermark information is embedded, and the “embedded position of digital watermark information” is a position (in the file indicated by “file name”) in which digital watermark information is embedded. (The number of bytes from the beginning of the file). In other words, FIG. 10 shows that the digital watermark information is embedded from the 576th byte from the beginning of the file having the file name “1-1”. The method of embedding the digital watermark information is not limited. There are various methods for embedding digital watermark information.
[0067]
Further, the server device separately holds a program. Now, the program held by the server device is a program that displays a screen for calculating an insurance premium based on image data, receives an input from a user, and calculates an insurance premium based on the user's input. And The formula for calculating the insurance premium is, for example, in the case of personal insurance, the monthly required insurance amount f (x) is calculated as “f (x) = (a × day value of hospitalization + b) X operation value + c x daily visit value x number of mouths ", and it is assumed that such a calculation formula exists in the program. The parameters “a”, “b”, and “c” are, respectively, the 576th and subsequent bytes of the file “1-1”, the 388th and subsequent bytes of the file “1-2”, and the 2584th and subsequent bytes of the file “1-3”. And embedded in Further, the parameters “a”, “b”, and “c” are confidential matters for the insurance company and are information that is not desired to be leaked. In addition, the “day value of hospitalization”, “value of surgery”, “value of daily hospital visit”, and “number of mouths” are values input by the user from the application screen.
[0068]
Then, after reading the file “top”, the information processing apparatus sequentially reads the file “1-1”, the file “1-2”, and the file “1-3”. Further, the information processing apparatus sequentially acquires the electronic watermark information “a”, “b”, and “c” embedded in the file “1-1”, the file “1-2”, and the file “1-3”. It is now assumed that “a” is “0.01”, “b” is “0.0005”, and “c” is “0.05”. Next, the information processing apparatus configures “f (x) = (0.01 × day value of hospitalization + 0.0005 × value of surgery + 0.05 × value of daily hospital visit) × number of mouths”.
[0069]
Next, the information processing apparatus waits for a user input. Then, the user inputs “value of hospitalization daily”, “value of surgery”, “value of daily hospitalization”, and “number of mouths” from the screen composed of the file “1-1”, and presses the enter button. It is assumed that the button has been pressed.
[0070]
Next, the information processing apparatus sets the value input by the user to f (x) = (0.01 × the value of the daily hospitalization + 0.0005 × the value of the surgery + 0.05 × the value of the daily hospital visit) × the number of mouths ” Substitute and calculate the insurance premium. Then, the information processing device outputs the calculated insurance premium. The output mode is, for example, FIG. The output form of the insurance premium calculation result does not matter. The output includes not only display on a display but also printing on a printer and transmission using communication means.
[0071]
As described above, according to the present embodiment, high security can be ensured by using digital watermark information embedded in image data constituting a screen of an application for execution of the application. Further, according to the present embodiment, security can be further secured by embedding index information of digital watermark information used for executing an application into image data as digital watermark information. In other words, it is difficult for human psychology to consider that there is confidential information in visible information. According to the present embodiment, the image data constituting the screen of the application appears on the surface, and by embedding confidential information as an electronic watermark in the image data, it is possible to acquire more embedded electronic watermark information. It becomes difficult. The insurance premium calculation formula in the above specific example is know-how unique to the company for the insurance company, and is information that the insurance company does not want to leak. The index information is usually a technique (data structure) for accessing data at high speed, but by using it as a technique for maintaining confidentiality, security can be further ensured at a higher level.
[0072]
In the present embodiment, one configuration example of the index of the index digital watermark information is shown, but it is needless to say that the present invention is not limited to the above example. Various methods and contents of the index can be considered. That is, the index may be anything, such as a B-Tree structure or pointer information.
[0073]
Further, the operations described in the present embodiment may be realized by a computer-readable program. The program may be recorded on a recording medium such as a CD-ROM and distributed, may be distributed by network distribution, or may be distributed by broadcasting. The same applies to other embodiments. Note that the program for realizing the operation described in the present embodiment includes, in a computer, an input receiving step of receiving an operation instruction of the program, and extraction of index digital watermark information from one stored image data. A digital watermark information extracting step of extracting digital watermark information from one or more image data based on the watermark information; a screen output step of constructing and outputting a screen using the one or more image data; This is a program for executing an embedded information processing step of processing the digital watermark information extracted in the step.
[0074]
【The invention's effect】
As described above, according to the present invention, high security can be ensured by using the digital watermark information embedded in the image data constituting the screen of the application for the execution of the application.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram of an information processing system according to a first embodiment.
FIG. 2 is a block diagram of an information processing system according to the first embodiment;
FIG. 3 is a flowchart illustrating an operation of the information processing apparatus according to the first embodiment.
FIG. 4 is a diagram showing an example of image data of a server device according to the first embodiment.
FIG. 5 is a diagram showing an example of a script constituting a screen according to the first embodiment.
FIG. 6 is a diagram showing a screen example of a calculation result of an insurance premium in the first embodiment.
FIG. 7 is a block diagram of an information processing system according to a second embodiment.
FIG. 8 is a flowchart illustrating an operation of the information processing apparatus according to the second embodiment.
FIG. 9 is a diagram showing an example of image data of a server device according to the second embodiment.
FIG. 10 is a diagram illustrating an example of index digital watermark information according to the second embodiment;
[Explanation of symbols]
11, 71 Information processing device
12 Server device
1101 Communication unit
1102 Image data storage
1103 Program storage
1104 Input reception unit
1105, 7105 Information extraction unit
1106 Screen builder
1107, 7107 Information processing unit
1201 second image data storage
1202 Second program storage
1203 Second communication unit

Claims (8)

On the computer,
An input receiving step for receiving a program operation instruction;
A digital watermark information extracting step of extracting digital watermark information from stored image data;
A screen output step of constructing a screen using the image data and outputting the screen,
A program for executing an embedded information processing step of processing the digital watermark information extracted in the digital watermark information extracting step. On the computer,
An input receiving step for receiving a program operation instruction;
From one stored image data, index digital watermark information, which is digital watermark information serving as index information of another digital watermark information, is extracted. Digital watermark information extraction step of extracting watermark information;
A screen output step of constructing and outputting a screen using the stored one or more image data;
A program for executing an embedded information processing step of processing the digital watermark information extracted in the digital watermark information extracting step. On the computer,
Further executing an information conversion step of converting the digital watermark information according to a predetermined rule,
The program according to claim 1, wherein the embedded information processing step processes the information converted in the information conversion step. In the input receiving step, input of data for calculating an insurance premium is also received,
The digital watermark information is information for calculating an insurance premium,
4. The program according to claim 1, wherein the embedded information processing step calculates an insurance premium using the data received in the input receiving step and the digital watermark information, and outputs the insurance premium. An image data storage unit storing image data in which digital watermark information is embedded,
A program storage unit for storing programs,
An input receiving unit for receiving a program operation instruction;
A digital watermark information extracting unit that extracts digital watermark information from the image data, wherein when the input receiving unit receives a program operation instruction, the digital watermark information extracted by the digital watermark information extracting unit is stored in the program. An information processing device configured to construct the screen using the image data and operate using the digital watermark information as a parameter. The digital watermark information which is two or more image data in which digital watermark information is embedded and which is embedded in one image data is an index watermark which is information of an index of digital watermark information embedded in another image data. An image data storage unit storing image data as information,
A program storage unit for storing programs,
An input receiving unit for receiving a program operation instruction;
A digital watermark information extracting unit that extracts index digital watermark information from the one image data, and extracts digital watermark information from one or more other image data based on the index watermark information;
When the input receiving unit receives a program operation instruction, the digital watermark information extracting unit passes the digital watermark information extracted from the one or more other image data to the program, and the program uses the image data. An information processing apparatus that operates by using the digital watermark information as a parameter. The information processing apparatus according to claim 5, wherein the image data storage unit is image data that is not used by the program, and also stores encrypted image data. The input receiving unit also receives an input of data for calculating an insurance premium,
The digital watermark information is information for calculating an insurance premium,
The information processing apparatus according to claim 5, wherein an insurance premium is calculated using the data received by the input receiving unit and the digital watermark information, and the insurance premium is output.

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