Evaluative Approach towards Text Steganographic Techniques

Abstract

Objectives: Steganography is a technique for hiding data in sensitive applications such as banking and legal fields. With Steganography the secret information can be passed without any suspicion. Methods Analysis: Text Steganography embed data in a text file through various techniques. Format based Method modifies the cover text to hide the secret message by Resizing the text, Changing the style of text. Text rotation techniques in MS excel document are hard to detect the minor changes in the text’s angle through. Mixed case font technique hides one character within each 8 letters of text file. Font Type method use three capital letters to hide one character of secret message. Findings: Criteria have been used to measure the goodness of the algorithm. Text rotation method in an excel document benefits the feature of hard to detect and will be applied to excel document only. Its percentage capacity is average and its similarity measure is one. In the mixed case font method payload capacity is very high when compared to other method but it looks like the fonts used in chat rooms. Its percentage capacity is high and its similarity measure is less than one. In Font Type method the embedding capacity is low when compared to other two techniques because only capital letters are used to hide but its similarity measure is one. Improvements: Font Type method though has the similarity measure one but it is found that it cannot be applied for numbers and other symbols to hide.