A Fast and Secure Selective Encryption Scheme using Grid Division Method

Abstract

“Encryption is the primary solution to provide security to the data, which is travelling on a communication link between any pair of nodes, but Selective encryption is a technique to save computational power, overhead, speed, time and to provide quick security by only encrypting a selected portion of a bit stream. Securing the visual and multimedia data like images requires specific design consideration for use in different applications. The focus of this paper is on selecting the important part of the image that can efficiently achieve by conceptually selecting the part of the image which is further used in its normal mode of operation for encryption. Once encryption is done, the encrypted data is sent along with remaining original part of the message, ensuring its secured transmission and distribution over public networks.. This paper proposes a new approach for image encryption using matrix or grid conversion of image. The main idea behind the present work is to select the part of the image by the arranging the bit stream in grid form and choosing the diagonal of the grid. The issue in traditional cryptosystem in many different areas such as wireless networking, mobile phone services and applications in homeland security is energy consumption for encryption of the large volume visual data. So we are dealing with a partial encryption algorithm of images.”