Abstract

A literally meaning of Steganography is covered writing. There are several methods of steganography, these include: Image steganography, Audio steganography, Video steganography and Linguistic steganography which use the cover to hide information. Each method has its own algorithm to embedding secret information inside the media cover. Linguistic steganography is basically hiding information in a text in such a way without making the text suspicious, so we have to take into our account possible characteristics of natural languages. In linguistic steganography, digital numbers like (0010100101001) data is to be encoded to innocuous natural language text by using synonym. In this paper, English language will be used as an instance of natural languages as we will be concerned with the set of all natural language texts. this research tries to employ a set of all synonyms as a way to hide secret message inside a natural language text. The main objective of this paper is to develop a general technique of lexical steganography to support different natural languages texts and decrease the bits used for encoding and increase the information. An evaluation of the proposed method has been carried out. The obtained results are encouraging and promising.

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