DESIGNING SOME IMPERCITIBLE DATA HIDING METHODOLOGIES USING STEGANOGRAPHIC TECHNIQUES ABSTRACT Data hiding is the process of embedding the secret data in cover image by making small modification to its pixels. The different methods of steganography are mostly applied on image files to embed the secret data. All this methods replace the some parts of the chosen pixels. Due to this only small data can be embedded in cover image otherwise; a large embedding changes the cover image originality. So, one has to compromise either in size of the secret data or in the visual quality of cover image. This paper presents a new methodology for embedding a large embedding data with very small changes in respectively small cover image. Based on this method, we have constructed set go image creator and secret data viewer in Microsoft platform. The growing demand of internet need to store, send or receive personal information. The common approach is to transform the data in different form so that the resultant data can be understood only by those who get it back into its original form. The technique is known as encryption. The major drawback of this method is that the existence of data is not hidden. If someone gives enough time then he may get the unreadable encrypted data in its original form. The concept of steganography is considerably been given much attention in recent years in order to overcome such type of problems. The primary aim of steganography is to hide the data in a cover media so that other will not notice. The characteristics of cover #304,DV Arcade, Opp. Agrawala Sweets, Street No. 10, Himayath Nagar, Hyderabad- 500 029 Ph: 040-3242 8143. media depends on the volume of data that can be hidden, the perceptibility of the message and its robustness. #304,DV Arcade, Opp. Agrawala Sweets, Street No. 10, Himayath Nagar, Hyderabad- 500 029 Ph: 040-3242 8143.
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