Credible accounting original evidence electronic image inquiring system

A technology of electronic images and original certificates, applied in computing, computer parts, electronic digital data processing, etc., can solve the problems of record association, inability to distinguish authenticity, and inability to prevent counterfeiters from replacing

Inactive Publication Date: 2012-09-12
谢建全
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] Ensuring the authenticity of the electronic image of the paper voucher is the key issue to ensure the credibility of the query. Since the digital image can be easily modified by a variety of image processing software without being discovered, the modified digital image can be detected by human eyes. It is impossible to distinguish its authenticity, and it provides opportunities for counterfeiters to modify the amount and forge handwritten signatures. Therefore, the credibility of the electronic image used to ensure the paper certificate is to ensure whether the electronic query of the certificate Reliable Critical Questions
[0004] At present, althoug

Method used

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  • Credible accounting original evidence electronic image inquiring system

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Embodiment Construction

[0007] 1. First scan the original paper voucher to obtain the corresponding electronic image

[0008] Use a scanner to scan the original paper voucher to obtain the corresponding electronic image, and then filter the electronic image to remove the noise that may be generated during the scanning process; obtain the electronic image F for future query M×N , where M and N represent the height and width of the image respectively, and the pixel value of each pixel is represented by the most commonly used 8-bit binary, and the pixel value of each pixel is expressed as f i,j , then f i,j ∈ {0, 1, 2, ... 255}, where i, j are the coordinates of the corresponding pixel points, i ∈ {1, 2, ... M}, j ∈ {1, 2, ..., N}.

[0009] 2. Generate encrypted electronic images to tamper with the parameters required for authentication information

[0010] In order to check whether the electronic image has been tampered with or replaced in the future, a one-way function-hash function is used to combi...

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Abstract

The invention relates to a credible accounting original evidence electronic image inquiring system. Key fields recorded by a database corresponding to electronic images and a sensible part of electronic image files form tampering authentication watermarks, the visual effect of the electronic images cannot be influenced, and whether the extracted authentication information and the re- calculated authentication information are consistent or not is verified in the use process for determining whether the evidence electronic images are tampered or not. In the authentication process, the authentication information of each pixel point is associated with the ambient pixels, so the local tampering on the electronic images can be prevented, meanwhile, the authentication information is also associated with the last record, so the pretending of he electronic image data of the record by the other electronic image capable of passing the anti-fake authentication can be effectively prevented, in addition, generated hash values exist in each record, and because of the single performance of the hash function, the tampering of the key data recorded in the database can also be prevented.

Description

technical field [0001] The invention relates to the fields of computer image processing and information security, and provides an electronic image query system for tamper-proof original paper certificates. Background technique [0002] With the continuous deepening of information technology, accounting business processing is also gradually realized electronically. Business processing from accounting, classification to inquiry has basically been replaced by computers. Traditional manual processing, but the authenticity of each business is now The original paper voucher is still mainly searched manually. If the original paper voucher is made into an electronic image, and then the electronic image generated by the computer is used to replace the manual query of the paper voucher, the efficiency of the query can be greatly improved and the human labor can be reduced. Intensity, and can realize cross-regional query. [0003] Ensuring the authenticity of the electronic image of t...

Claims

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Application Information

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IPC IPC(8): G06F17/30G06K9/64
Inventor 谢建全
Owner 谢建全
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