TECHNOLOGY Secure Data Transfer based on Wavelet Transform from Cryptographic and Steganographic Techniques

In today’s world, there are a number of cryptogr aphic and steganographic techniques used in order t o have secured data transfer between a sender and a receiv er. In this paper we present a new hybrid approach that integrates the merits of cryptography and Image steganography based on multi resolution wavelet domain. First, th e original message is encrypted using modified blowfish algori thm and the resultant cipher text is embedded into a cover image. After that the Steg image is decomposed in to approximation and detailed image using discrete wavelet transform. The resultant reduced image is transmitt ed to the receiver and the reverse process is done in order to get back the original plain text. Our experimental resu lts show that our system is unique in its design as well as it is suspicion less.