JP2004118364A - Image verification system, image verification method and image verification program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a user with a simple and easy-to-use user interface. <P>SOLUTION: If verification data corresponding to image data are MAC data, information about the image file (thumbnail image, filename, camera ID, verification result, etc.) is displayed on a first window 301 (S206). If the verification data corresponding to the image data are digital signature data, information about the image file (thumbnail image, filename, camera ID, verification result, etc.) is displayed on a second window 302 (S211). <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for verifying whether image data in an image file has been altered.
[0002]
[Prior art]
At present, an image verification system has been proposed which verifies whether or not image data has been modified using MAC (Message Authentication Code) data or digital signature data corresponding to image data of an image file. A conventional image verification system is disclosed in, for example, US Pat. No. 5,499,294. Here, the MAC data is data obtained by converting a hash value of image data with key data corresponding to a common key of a common key cryptosystem. The digital signature data is data obtained by converting a hash value of image data with key data corresponding to a secret key of a public key cryptosystem.
[0003]
[Problems to be solved by the invention]
However, none of the conventional image verification systems has considered a simple and easy-to-use user interface.
[0004]
The present invention has been made in view of such a situation, and an object of the present invention is to provide a user with a simple and easy-to-use user interface.
[0005]
[Means for Solving the Problems]
The image verification system of the present invention is an image verification system that verifies whether or not image data has been modified using verification data corresponding to the image data, and includes information indicating whether or not the image data has been modified and the image data. , A file name of the image data, and information for specifying a device that has generated the image data are displayed on the display means.
[0006]
The image verification method of the present invention is an image verification method for verifying whether or not image data has been modified using verification data corresponding to the image data, wherein the image data includes information indicating whether or not the image data has been modified. And a display step of displaying, on a display means, a thumbnail image corresponding to the image data, a file name of the image data, and information for specifying the device that generated the image data.
[0007]
The image verification program of the present invention is an image verification program that verifies whether or not image data has been modified using verification data corresponding to the image data, and includes information indicating whether or not the image data has been modified and the image data. And a display step of displaying, on a display unit, a thumbnail image corresponding to the image data, a file name of the image data, and information for specifying a device that has generated the image data.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS.
[0009]
FIG. 1 is a diagram illustrating a main configuration of an image verification system 10 according to the present embodiment.
[0010]
In FIG. 1, a control unit 101 is a unit that controls various functions in the image verification system 10. The memory 102 is a memory that stores various data processed by the control unit 101. The storage unit 103 is a memory that stores an application program such as the image verification program 106. The user interface unit 104 is a unit that notifies the control unit 101 of a user instruction. The display unit 105 is a unit that displays information supplied from the control unit 101.
[0011]
FIG. 3 is a diagram illustrating an example of a screen generated by the control unit 101 according to the present embodiment in accordance with the image verification program 106.
[0012]
In FIG. 3, a screen 300 is a screen that displays a first window 301, a second window 302, and a third window 303. The screen 300 is a screen that displays information indicating the total number of files displayed in the first window 301, the second window 302, and the third window 303.
[0013]
The first window 301 is a window for displaying a list of information on image files belonging to the first group. The image files belonging to the first group are image files whose verification data corresponding to the image data is MAC (Message Authentication Code) data. The MAC data is obtained by converting a hash value of image data with key data corresponding to a common key of a common key cryptosystem.
[0014]
The second window 302 is a window for displaying a list of information on image files belonging to the second group. The image files belonging to the second group are image files in which the verification data corresponding to the image data is digital signature data. The digital signature data is obtained by converting a hash value of image data with key data corresponding to a secret key of a public key cryptosystem.
[0015]
The third window 303 is a window for displaying a list of information on image files belonging to the third group. The image files belonging to the third group are image files in which the verification data corresponding to the image data is neither the MAC data nor the digital signature data.
[0016]
FIG. 2 is a diagram showing one of the processing procedures executed by the image verification system according to the present embodiment in accordance with the image verification program 106.
[0017]
Step S201: The control unit 101 determines whether the user operates the user interface unit 104 and selects one folder or one or more files in the storage unit 103. If one folder or one or more files have been selected, the process proceeds to step S202.
[0018]
Step S202: The control unit 101 determines one target file from one or more image files selected by the user.
[0019]
Step S203: The control unit 101 determines whether the verification data corresponding to the image data in the target file is the MAC data. If the verification data is MAC data, the process proceeds to step S204, and if the verification data is not MAC data, the process proceeds to step S207.
[0020]
Step S204: The control section 101 classifies the target file into a first group.
[0021]
Step S205: The control unit 101 verifies, using the image data in the target file and the MAC data corresponding to the image data, whether or not the image data has been altered.
[0022]
Step S206: The control unit 101 determines whether the thumbnail image of the target file, the file name, the camera ID, which is information indicating an identifier unique to the digital camera that generated the target file, and whether the image data in the target file has been modified. The verification results and the like are collectively displayed in the first window 301.
[0023]
Step S207: The control unit 101 displays the total number of image files belonging to the first group in the first window 301, and displays the total number of image files belonging to the first to third groups on the screen 300.
[0024]
Step S208: The control unit 101 determines whether the verification data corresponding to the image data in the target file is digital signature data. If it is digital signature data, the process proceeds to step S209, and if it is not digital signature data, the process proceeds to step S213.
[0025]
Step S209: The control unit 101 classifies the target file into a second group.
[0026]
Step S210: Using the image data in the target file and the digital signature data corresponding to the image data, the control unit 101 verifies whether or not the image data has been altered.
[0027]
Step S211: The control unit 101 determines whether the thumbnail image of the target file, the file name, the camera ID which is information indicating an identifier unique to the digital camera that generated the target file, and whether the image data in the target file has been modified. The verification results and the like are collectively displayed in the second window 302.
[0028]
Step S212: The control unit 101 displays the total number of image files belonging to the second group in the second window 302, and displays the total number of image files belonging to the first to third groups on the screen 300.
[0029]
Step S213: The control unit 101 classifies the target file into a third group.
[0030]
Step S214: The control unit 101 collectively displays the thumbnail image, the file name, and the like of the target file in the third window shown in FIG.
[0031]
Step S215: The control unit 101 displays the total number of image files belonging to the third group in the third window 303, and displays the total number of image files belonging to the first to third groups on the screen 300.
[0032]
Step S216: The control unit 101 determines whether there is an image file that has not been processed yet. If there is an image file that has not been processed yet, the process returns to step S202.
[0033]
As described above, according to the image verification system 10 in the present embodiment, the image file specified by the user is classified according to the type of verification data corresponding to the image data in the image file, and information on the image file is classified. They can be displayed together in a window corresponding to the group. Thereby, the user can easily know the type of the verification data corresponding to the image data in each image file.
[0034]
Further, according to the image verification system 10 of the present embodiment, the thumbnail image, the file name, the camera ID, the verification result, and the like of the image file selected by the user can be displayed collectively. Thus, the user can instantly know information on the selected image file.
[0035]
【The invention's effect】
According to the present invention, it is possible to provide a user with a simple and easy-to-use user interface.
[Brief description of the drawings]
FIG. 1 is a diagram showing a main configuration of an image verification system 10 according to the present embodiment.
FIG. 2 is a diagram illustrating a processing procedure executed by an image verification system according to an embodiment in accordance with an image verification program.
FIG. 3 is a diagram showing an example of a screen generated by the control unit 101 according to the image verification program 106 in the present embodiment.
[Explanation of symbols]
10 Image Verification System 101 Control Unit 102 User Interface Unit 103 Display Unit 104 Storage Unit 105 Image Verification Program

Claims (9)

An image verification system for verifying whether or not the image data has been modified using verification data corresponding to the image data,
A thumbnail image corresponding to the image data, a file name of the image data, and information for specifying a device that generated the image data are displayed on a display unit, together with information indicating whether the image data has been modified. Image verification system. The image verification system according to claim 1, wherein the verification data is data generated using key data corresponding to a common key of a common key cryptosystem. The image verification system according to claim 1, wherein the verification data is data generated using key data corresponding to a secret key of a public key cryptosystem. An image verification method for verifying whether or not the image data has been modified using verification data corresponding to the image data,
A display step of displaying, on display means, a thumbnail image corresponding to the image data, a file name of the image data, and information for identifying an apparatus that has generated the image data, together with information indicating whether the image data has been modified. An image verification method, comprising: The image verification method according to claim 4, wherein the verification data is data generated using key data corresponding to a common key of a common key cryptosystem. The image verification method according to claim 4, wherein the verification data is data generated using key data corresponding to a secret key of a public key cryptosystem. An image verification program for verifying whether or not the image data has been modified using verification data corresponding to the image data,
A display step of displaying, on display means, a thumbnail image corresponding to the image data, a file name of the image data, and information for identifying an apparatus that has generated the image data, together with information indicating whether the image data has been modified. An image verification program characterized by having. The image verification program according to claim 7, wherein the verification data is data generated using key data corresponding to a common key of a common key cryptosystem. The image verification program according to claim 7, wherein the verification data is data generated using key data corresponding to a secret key of a public key cryptosystem.

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