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A method and device for digital watermark encryption protection of text content

A technology of digital watermark and encryption method, which is applied in digital data protection, program/content distribution protection, electronic digital data processing, etc., and can solve the problems of difficult copyright protection and easy cracking of text content

Active Publication Date: 2022-02-22
上海海笛数字出版科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the copyright protection of text content in the prior art is difficult and easy to crack, the present invention provides a method and device for digital watermark encryption and protection of text content, by re-encrypting the character code of the original character and Carry watermark information, use custom fonts to display encrypted character codes, so that the display effect will not be affected, but the text content is encrypted content with unforgeable watermark information, to achieve the original data protection purpose of copyright content

Method used

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  • A method and device for digital watermark encryption protection of text content
  • A method and device for digital watermark encryption protection of text content
  • A method and device for digital watermark encryption protection of text content

Examples

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Embodiment 1

[0039] Such as figure 1 Embodiment 1 shown: a method for encrypting and protecting text content with a digital watermark, the encryption method comprising:

[0040] S1: remove the repeated characters from the characters in the original text, and generate an array A composed of non-repeated characters, and the serial number of each character in the array A is in order of the order in which it first appears in the original text content.

[0041] For example, a certain text information reads: The poems in the Book of Songs are divided into three parts: Feng Ya Song, which are divided according to different music. Feng includes 15 parts, most of which are folk music songs in the Yellow River Basin, called "Fifteen National Styles" A total of 160 articles…….

[0042] First arrange the characters in order, remove the repeated characters after them, and obtain an array A with no repeated characters. In the array A, the serial number corresponding to "poetry" is 1, the serial number ...

Embodiment 3

[0085] Such as image 3 Embodiment 3 shown: a device for performing digital watermark encryption protection on text content, including:

[0086] The character conversion unit is used to reversibly convert characters to the original character encoding.

[0087] The watermark character embedding unit is used to embed the new character code into the text database, wherein the new character code maps the character corresponding to the original character code to generate a new font, so that the new character code is displayed as the The glyph of the character.

[0088] The encryption unit is used to obtain a key and encrypt the original character code with the key and watermark to obtain a new character code.

[0089] The server unit is used to store data such as text information, character encoding information, watermark information, and key information. The server unit can also be integrated with a judgment module or a judgment instruction to judge whether the current character...

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Abstract

The invention discloses a method and device for encrypting and protecting text content with digital watermarks. The encryption method includes: S1: remove the repeated characters after the characters in the original text, and generate an array A composed of non-repeated characters, The sequence number of each character in the array A is in the order of first appearance in the original text content; S2: the characters in the array A are converted into character code A (n) one by one, and the character code A (n) is Encrypt one by one again to obtain encrypted new character code B (n); S3: convert new character code B (n) to obtain character code C (n), and map the array with new character code C (n) The characters in A that cause character code C(n) to be displayed as the glyphs of the characters in array A. By re-encrypting the character code of the original characters and carrying watermark information, the display effect will not be affected, and the text content is encrypted content with unforgeable watermark information, so as to realize the original data protection purpose of copyright content.

Description

technical field [0001] The invention relates to an encryption method, in particular to a method and device for performing digital watermark encryption protection on text content, and belongs to the field of digital encryption. Background technique [0002] With the rapid development of computer network technology, the acquisition of text content has become very convenient, because of the characteristics of easy copying and modification of text content, the problem of copyright protection has hindered the development of the digital publishing industry for a long time. [0003] Any file information in computers and electronic devices is stored in binary codes. Through binary file access technology, all files can be opened and the information in them can be read. Therefore, the information stored in binary is easy to be copied or intercepted by others, resulting in the loss of text information. [0004] Digitally published electronic dictionaries use text information to store ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/10G06F21/60
CPCG06F21/10G06F21/602
Inventor 范剑淼
Owner 上海海笛数字出版科技有限公司
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