ISSN : 2319-7323

INTERNATIONAL JOURNAL OF COMPUTER SCIENCE ENGINEERING

ABSTRACT

Title	:	Image Encryption and Decryption Algorithm Using Two Dimensional Cellular Automata Rules In Cryptography
Authors	:	P. Sanoop Kumar, C. S. U. Sampreeth, S. Aravind Kumar Reddy
Keywords	:	Cryptography, cellular automata, substitution byte, linear, nonlinear, Periodic boundary.
Issue Date	:	Jan 2017
Abstract	:	This paper presents a newer encryption and decryption scheme for image and also for the data using the cellular automata (CA) rules. This encryption and decryption algorithm for block cipher based on the linear and nonlinear cellular automata rules. The image of any dimension should be the input of this algorithm. First we convert the whole image into pixels that is taken as an input plain text. Then we apply nonlinear CA rules (Complement) to the plain text and also to the key. Then one of the basic PB CA rule is applied to the above results separately. Then the XOR operation should be performed to the above results. After that the result of XOR operation is fed as input to the substitution box (S-BOX). Again basic PB CA rules are applied to the above results and followed by S-BOX. The decryption process is carried out just similar to that of encryption but in reverse way. These encryption and decryption process are performed for 8 numbers of rounds and avoids dependency between the plain text and cipher text such that our proposed algorithm is more secure than the well-known algorithms like AES & DES.
Page(s)	:	1-9
ISSN	:	2319-7323
Source	:	Vol. 6, No.1