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A method and device for security control and traceability of paper documents

A paper document, security control technology, applied in the input/output process of data processing, digital output to printing unit, instrument, etc. Retention and other issues, to reduce the risk of leakage, reduce the effect of human intervention factors

Active Publication Date: 2020-08-14
李晓妮
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method and device for security control and traceability of paper documents, which are used to solve the irregular approval process in the document copying process in the prior art, the inability to save snapshots of copied content, and the inability to re-embed watermark information in copied content, etc. Shortcomings, to further unify technical problems such as the security control output and traceability of the whole process of paper document printing and copying documents

Method used

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  • A method and device for security control and traceability of paper documents
  • A method and device for security control and traceability of paper documents

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Embodiment Construction

[0040] The idea of ​​the present invention is to embed watermark information in the printed paper document by modifying the vector font when the document is printed out; the copy control subsystem extracts the watermark information embedded in advance when the document is printed out in real time, and uses The document confidentiality matching relationship is used to control whether the user has the right to copy the confidential document; then the binary text image watermarking algorithm is used to add the copy user's identity information and copy information to the copied paper document, and record the user's operation at the same time. In addition, the audit and configuration management subsystem audits and traces the allocation of user rights, the configuration of device use policies, and the use of user devices. Thus, a method and device for security control and traceability of paper documents are obtained. The specific implementation of the present invention will be desc...

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PUM

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Abstract

The invention relates to a method and device for safety control and source-tracing tracking of a paper document. The method comprises the steps that (1) a client side inserts watermark information in the printed and output paper document by a printing control module; (2) when the printed paper document is copied, copying user identity authentication will be conducted by a copy control module, a user obtains scanning image data of the paper document after passing the identity authentication, the watermark information inserted into the paper document is extracted in real time, and then legality of a copy operation behavior is judged; (3) when the copy operation behavior of the paper document is judged to be legal, the watermark information will be inserted into the copied and output paper document once again; and (4) the copied and output paper document is converted into digital image data by digital equipment, and a watermark information extraction and recognition program is conducted for a document source-tracing tracking operation. According to the invention, technical puzzles in safety control output, source-tracking tracking of secrete divulgence and so forth during whole processes of paper document printing and copying can be solved uniformly.

Description

technical field [0001] The invention belongs to the technical field of paper document protection, and relates to a method and device for security control output and traceability of paper documents, in particular to a method and device for document printing and copy output security control, traceability and tracking. Background technique [0002] With the development of e-commerce and e-government, enterprises, institutions, party and government agencies, and national security departments will deal with a large amount of written materials, including important documents such as contracts and secrets. Therefore, it is an important issue to study the copyright protection and content security of the above important text files. In addition, many text files not only exist in digital form, but also spread in paper form through printing, copying and other means. With the rapid development of digital technology, this method has become quite common, which also makes a lot of important...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/16G06F3/12
CPCG06F3/1222G06F3/1238G06F21/16
Inventor 李晓妮
Owner 李晓妮
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