ISSN: 2229-371X

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Research Article Open Access

Hiding Data in Text Through Changing in Alphabet Letter Patterns (CALP)

Abstract

Recent years have witnessed the rapid development of the Internet and telecommunication techniques But due to hostilities of environment over the internet, confidentiality of information have increased at phenomenal rate. Therefore to safeguard the information from attacks, number of data/information hiding methods have evolved. Steganography is an emerging area which is used for secured data transmission over any public media. Steganography is of Greek origin and means "Covered or hidden writing". Considerable amount of work has been carried out by different researchers on Steganography. In this paper the authors propose a novel text steganography method through changing the pattern of English alphabet letters. Considering the structure of English alphabets, secret message has been mapped through some little structural modification of some of the alphabets of the cover text .This approach uses the idea of structural and feature changing of the cover carrier which is not visibly distinguishable from the original to the human beings and may be modified for other India language also. This solution is independent of the nature of the data to be hidden and produces a stego text with minimum degradation. Quality of the stego text is analyzed by trade off between no of bits used for mapping. Efficiency of the proposed method is illustrated by exhaustive experimental results and comparisons.

Souvik Bhattacharyya, Pabak Indu , Sanjana Dutta , Ayan Biswas and Gautam Sanyal

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