Partial Image Encryption Algorithm Using Pixel Position Manipulation Technique: The SMART Copyback System

Nowadays, the most important locomotive to provide confidentiality is image encryption. In real-time applications the classical and modern ciphers are not appropriate because of vast quantity of data. However, certain applications like Pay-TV or Payable Internet Imaging Albums do not require entire part of an encryption, but requires a part of the image to be transparent to all users. Partial encryption is an approach to encode only the most essential portion of the data in order to afford a proportional confidentiality and to trim down the computational requirements and also execution time for encryption is reduced. In this paper, partial image encryption of color images using pixel position manipulation technique based on region of interest is proposed. It offers the amenities of partial encryption and reconstructs the images partially. Here input image is divided into sub blocks, and then selected blocks are encrypted using the proposed technique. The proposed technique achieves quick security by encrypting the selected blocks of an image. Encrypted data can be store long term without fail using SMART (Self Monitoring Analysis and Reporting Technology Copyback) system.