Credible accounting original evidence electronic image inquiring system

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 Business processing from accounting, classification to inquiry has basically been replaced by computers.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...

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

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