An Imporve Color Image Stgnography Using ECC Algorithm

Authors: Rekha yadav, Prof. Sumit Nigam

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Abstract

The main aim of the proposed work is to investigate about the data security technique. Therefore two major domains are concentrated for study cryptography and steganography. Both the techniques are much popular for securing data during different kinds of unsecured data communication scenarios. In addition of that both the techniques are low cost for implementation as well as maintenance. During investigation of this technique the steganographic techniques are not much secure due to most of the time LSB based steganography scenarios. Therefore the proposed work is intended to improve the security of traditional steganographic technique by incorporating the cryptographic technique too. Thus the proposed work introduced an ECC cryptographic technique for encrypting the message securely and then that is incorporated over the color image bit plane for 3 bits each. That process not much effect the actual color definition therefore the image quality is not changed. The implementation of the proposed concept is performed using dot net technology and their performance is computed. To evaluate the performance of the given system the MSE and PSNR is used for image quality parameters additionally for measuring the efficiency of the system time and space complexity is computed. According to the obtained performance the proposed technique is efficient and effective for secure steganographic scenarios..

Introduction

The current era is a computational age where most of information is communicated via internet or networks. Due to frequent usages of this public communication medium not all the communications are much secure. Banking information, army communication or some highly confidential information leakage is a key issue now in these days. In this context the data security in un-trusted network is a key area of study and new solution design. There are a number of effective solutions to provide such solution but either these are much resource complex or not much secure for confidential data exchange. Therefore a new technique is required to design for improving the security as well as the resource consumption for securing data in un-trusted communication channels. In this context a new security model is proposed for design and implementation that is highly secure and efficient in terms of rapid data processing ability. Therefore a hybrid cryptographic concept by combining stegnography and cryptography is proposed for design and implementation. That technique first encrypt the data using an efficient and light weight cryptographic algorithm and then converted into the binary strings to incorporate the data into a digital image. That is performed on the basis of stegnographic concept. In this context first need to decide a efficient and secure cryptographic technique and LSB based stegnography is used for hiding data into an image medium.

Conclusion

The data security is a major concern in these days communication. Everyone is well understood the security and the techniques of securing data. Therefore any high confidential data exchange in normal network is a concern of network and data security. In this presented work the main aim is to study to secure data in un-trusted environment of data communication. In various applications such as security agencies and their communications are need to be prevented from any kind of attack and mislead. Therefore by motivation of this different cryptographic and stegnography techniques are studied and a new technique is presented in this work. The basic motive of this presented study is to explore the techniques of cryptography and color image stegnography for improving the security to communicate sort secret messages. Therefore first the data or message to be hiding is taken as input to the system and for encryption of data ECC (elliptic curve cryptography) is used. After encryption of data that is converted into the binary format. In order to hide data and transmit to the receiving party the stenographic technique is used. Thus a color image is accepted as input to the system and this color image LSB is used to hide the data. In this work the 3bit LSB stenography is used to hide the data. The key advantage of color image is their ability to hide large amount of data in their pixel definition because each pixel is defined using three color composition and a small change in these three definition in last bits are not effect much in the actual image definition.