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Today’s large demand for internet applications requires data to be transmitted in a safe and secure manner. Data transmission in public communication system insecure because of interception and improper manipulation by eavesdropper. So the solution for this problem is Steganography, Steganography is the art of hiding one medium of information into another medium. There are many approaches for hiding textual information in multimedia file such as image, audio and video. Hiding textual information in multimedia file provides the most effective way to guard privacy. Key aspect of embedding text in multimedia file is that, after embedding text in multimedia file the size of the multimedia file remains same. The existing system can’t provide more security and message length is restricted to few characters only. The proposed technique alters the data of lower bit in a cover object to embed textual information. The main goal of this paper is to embed textual information into multimedia file and the text message is encrypted before embedding to get advantage of cryptography.

A Novel Approach for Hiding Encrypted Data in Image, Audio and Video using Steganography