We propose a method of synonymous paraphrasing of a text based on WordNet synonymy data and Internet statistics of stable word combinations (collocations). Given a text, we look for words or expressions in it for which WordNet provides synonyms, and substitute them with such synonyms only if the latter form valid collocations with the surrounding words according to the statistics gathered from ...

The image steganography is known as a technique of hiding information in cover object such that the analysis of stego image doesn’t provides any clue of hidden data. The image steganography is not a new concept but the recent growth in the computer networks makes it live again because of large visual data sharing in computer networks and greater embedding capability than text and with a large n...

Steganography is the art and science of writing hidden messages in such a way that no one apart from the intended recipient knows of the existence of the message, This can be achieve by concealing the existence of information within seemingly harmless carriers or cover, the text, image, video, audio, etc can be used as a carrier to embed the information. In this paper, we propose a modified sec...

Steganography is a method of hiding data within a cover media so that other individuals fail to realize their existence. In this paper, a new approach for steganography in Arabic texts is proposed. The main idea is that each Arabic word may have some characters which can be extended by 'Kashida'. The ranks 'locations' of such characters and the inserted Kashida, construct a coding method to rep...

The art and science of writing hidden messages in such a way that no one apart from the intended recipient knows of the existence of the message is Steganography. This differs from cryptography, the art of secret writing, which is intended to make a message unreadable by a third party by encrypting the data. If a piece of text looks suspicious , it is easy to suspect that someone wants to hide ...

ABSTRACT The information security has become one of the most significant problems in data communication. So it becomes an inseparable part of data communication. In order to address this problem, cryptography and steganography can be combined. This paper proposes a secure communication system. It employs cryptographic algorithm together with steganography. The jointing of these techniques prov...

Textual steganography is a means of concealing an encoded message within text. The appeal in such a system is its potential for hiding the fact that encoding is taking place. The failure to hide the presence of encoding is a form of information leakage and an inherent risk since it suggests that there is important or valuable information in transit. This is considered a major limitation of exis...

Syntactic transformation based(ST) steganography performs embedding operations of secret information by meaning-preserving syntactic transformations into sentences of a text. The syntactic transformations caused the difference of the occurrence frequency among different semantically equivalent syntactic structures vary between the cover texts and stego texts. A steganalysis method is therefore ...

Textual steganography is a means of concealing an encoded message within text. The appeal in such a system is its potential for hiding the fact that encoding is taking place. The failure to hide the presence of encoding is a form of information leakage and an inherent risk since it suggests that there is important or valuable information in transit. This is considered a major limitation of exis...