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Reseach Article

A Symmetric Encryption Scheme for Colour BMP Images

Published on December 2011 by Narendra K Pareek, Vinod Patidar, Krishan K Sud
Network Security and Cryptography
Foundation of Computer Science USA
NSC - Number 2
December 2011
Authors: Narendra K Pareek, Vinod Patidar, Krishan K Sud
bfc42323-1604-4c27-8f98-742d54a61665

Narendra K Pareek, Vinod Patidar, Krishan K Sud . A Symmetric Encryption Scheme for Colour BMP Images. Network Security and Cryptography. NSC, 2 (December 2011), 42-46.

@article{
author = { Narendra K Pareek, Vinod Patidar, Krishan K Sud },
title = { A Symmetric Encryption Scheme for Colour BMP Images },
journal = { Network Security and Cryptography },
issue_date = { December 2011 },
volume = { NSC },
number = { 2 },
month = { December },
year = { 2011 },
issn = 0975-8887,
pages = { 42-46 },
numpages = 5,
url = { /specialissues/nsc/number2/4333-spe026t/ },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Special Issue Article
%1 Network Security and Cryptography
%A Narendra K Pareek
%A Vinod Patidar
%A Krishan K Sud
%T A Symmetric Encryption Scheme for Colour BMP Images
%J Network Security and Cryptography
%@ 0975-8887
%V NSC
%N 2
%P 42-46
%D 2011
%I International Journal of Computer Applications
Abstract

In this paper, a new image encryption scheme for colour BMP images using a secret key of 120-bits is proposed. Initially, image is divided into blocks subsequently into color components. Each color component is modified by performing bitwise operation which depends on secret key used in algorithm as well as a few most significant bits of its previous and next color component. Three rounds are taken to complete this process. To make cipher more robust, a feedback mechanism is applied by modifying the used secret key after encrypting each block. The propose scheme is simple, fast and sensitive to the secret key. Due to high order of substitution, common attacks like linear and differential cryptanalysis are infeasible. The experimental results show that the proposed encryption technique is efficient and has high security features.

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Index Terms

Computer Science
Information Sciences

Keywords

Encryption Substitution Image cipher