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Text content digital watermark encryption and protection method and device

An encryption method and digital watermarking technology, which can be applied in the fields of digital data protection, program/content distribution protection, electronic digital data processing, etc., and can solve the problems of easy cracking and difficulty in copyright protection of text content

Active Publication Date: 2018-05-29
上海海笛数字出版科技有限公司
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  • 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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  • Text content digital watermark encryption and protection method and device
  • Text content digital watermark encryption and protection method and device
  • Text content digital watermark encryption and protection method and device

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 into character codes.

[0087] The watermark character embedding unit is used for embedding new character codes into the text database.

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

[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 is repeated. If it is repeated, it will be ignored. Repeated characters after.

[0090] The server decryption unit or decryption module is used to obtain watermark information and key information and use the watermark information and key info...

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Abstract

The invention discloses a text content digital watermark encryption and protection method and device. The method comprises S1, eliminating posterior repeated characters in an original text to generatean array A composed of characters without repetition, wherein the serial number of every character in the array A is in order of appearance in the original text; S2, converting the characters in thearray A one by one into character codes A (n), and encrypting the character codes A (n) one by one to acquire encrypted new character codes B (n); S3, converting the new character codes B (n) into acquire character codes C (n), mapping the characters in the array A with the character codes C (n) so that the character codes C (n) are displayed as the font of the characters in the array A. Accordingto the text content digital watermark encryption and protection method, by encrypting and coding the character codes of original codes again and enabling the encrypted character codes to carry watermark information, the display effects can avoid being affected, text content can be encrypted and carry the unforgeable watermark information, so that the aim of original data protection of content ofcopyright can be achieved.

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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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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