Rapid perforation signature method suitable for PDF

Abstract

The invention discloses a rapid perforation signature method suitable for a PDF, which comprises the following steps of: S1, cutting an electronic seal of the perforation signature according to a page number range of a document to be signed and a perforation signature mode; S2, analyzing PDF document metadata, and calculating signature coordinates of a to-be-signed page according to a perforation signature mode; and S3, traversing each signature coordinate, and stamping a corresponding cut seal picture at the coordinate position. According to the method, the digital signature technology and the perforation signature technology are combined, so that the problems of large quantity and low efficiency of perforation signature and multi-page PDF signature of the electronic document are solved.

Description

technical field [0001] The invention belongs to the technical field of image data processing, and in particular relates to a fast seam-mounted signature method suitable for PDF. Background technique [0002] Electronic signature is a form of expression of electronic signature. It uses image processing technology to convert electronic signature operation into the same visual effect as paper document sealing operation, and uses electronic signature technology to ensure the authenticity and integrity of electronic information. and non-repudiation of the signer. [0003] With the popularization of the Internet and the rapid development of various e-commerce activities and e-government activities, electronic signatures have been widely used in various fields to ensure the authenticity, integrity, confidentiality and non-repudiation of electronic documents. In practical applications, sometimes it is necessary to affix a physical seal to multiple pages of a paper document, and eac...

AI Technical Summary

Problems solved by technology

[0004] In the application scenario of seam-mounted stamps, on the one hand, it is necessary to cut the image of the stamp according to different seam-mounted strategies and assign the corresponding seal positions; on the other hand, the number of seam-mounted stamps is directly related to the number of PDF pages. The number of chapters is close to twice the number of PDF pages, so when the number of PDF pages is large, the number of seam stamps can reach hundreds or even thousands, which seriously affects the speed of seam signatures. Traditional signature technology cannot meet the requirements of fast seam signatures

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