Carrier-free information hiding method for big data Chinese text

Abstract

The invention discloses a carrier-free information hiding method for a big data Chinese text, and the method comprises: firstly carrying out preprocessing of the big data Chinese text, and mainly comprises word segmentation of the text, calculation of the word frequency and TF-IDF feature information of words after word segmentation, and LDA topic model clustering of the text; then, the sender segments the secret information, converts the secret information into keyword IDs through a word index table, and searches a text containing secret information keywords in the big data text; and, secondly, the searched text is used as an index label according to theme distribution of the corresponding text and TF-IDF characteristics of keywords in the corresponding text, meanwhile, a random number isintroduced to control the sequence of the secret information keywords, and finally, the random number and the index are used as labels together to be encrypted and sent to a receiver. Experiments show that the method improves the concealment and security of secret information while improving the concealment capacity.

Description

technical field [0001] The invention relates to a carrier-less information hiding method for large data Chinese texts. Background technique [0002] Information hiding technology, as an important branch in the field of information security, mainly uses the redundancy of digital information by human sensory organs to hide one information in another information carrier, so that the hidden carrier information still shows original features. This information carrier can be various types of data, such as text, image, video or audio and so on. Although the external characteristics of the hidden carrier are still preserved, it still needs to change some information of the carrier, which makes it unable to effectively resist various steganographic detection tools such as replay attacks, OCR technology, and statistical analysis. [0003] In view of the existing information hiding technology that needs to change the carrier information, scholars have proposed the concept of informati...

AI Technical Summary

Problems solved by technology

In the above literature, although the various methods proposed by the researchers have improved the hidden capacity, the room for improving the hidden capacity is not large, and it is still difficult to meet the actual needs.

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