A New Arabic Text (Diacritics, non Diacritics) Steganography

Abstract

Steganography is way of concealing the existence of secret communication, it is a form of security through obscurity, in such a way that no one, apart from the sender and intended recipient, suspects the existence of the message. Many different carrier file formats can be used, but text documents have been widely used and steganography in text more difficult than other media because of a little redundant information in text file. This paper, purposes a new idea for text steganography by using Unicode system characteristics and non-printing characters to hide information in Arabic texts (diacritics, non diacritics). This method can be used for Arabic MS Word documents. Our method has been implemented by Visual Basic 6.0 programming language. This proposed method has high capacity, it can hide one bit in each Arabic letters in the cover-file , and it is not make any apparent changes in the original text. So ,it satisfies perceptual transparency.