A partial image encryption method with pseudo random sequences

Authors:
Y. V. Subba Rao;Abhijit Mitra;S. R. Mahadeva Prasanna
Affiliations:
Department of Electronics and Communication Engineering, Indian Institute of Technology Guwahati, North Guwahati, India;Department of Electronics and Communication Engineering, Indian Institute of Technology Guwahati, North Guwahati, India;Department of Electronics and Communication Engineering, Indian Institute of Technology Guwahati, North Guwahati, India
Venue:
ICISS'06 Proceedings of the Second international conference on Information Systems Security
Year:
2006

Citing 7
Cited 1

Linear Feedback Shift Register Design Using Cyclic Codes

IEEE Transactions on Computers
An efficient algorithm to generate binary sequences for cryptographic purposes

Theoretical Computer Science
Shift Register Sequences

Shift Register Sequences
An Instruction-Level Distributed Processor for Symmetric-Key Cryptography

IEEE Transactions on Parallel and Distributed Systems
Partial encryption of compressed images and videos

IEEE Transactions on Signal Processing
Image encryption for secure Internet multimedia applications

IEEE Transactions on Consumer Electronics
Shared key encryption of JPEG color images

IEEE Transactions on Consumer Electronics

Combinational domain encryption for still visual data

Multimedia Tools and Applications

Quantified Score

Hi-index	0.00

Visualization

Abstract

We propose an effective approach for partial image encryption with pseudo random sequences (PRS). It is known that an image can be considered as a combination of correlated and uncorrelated data as well as most of the perceptual information are present in the correlated data rather than the uncorrelated data. Hence, the amount of residual intelligence present in an encrypted image depends on the correlated data. It is, therefore, sufficient to encrypt the correlated data instead of encrypting the entire image in order to speed up the entire operation. From the perception point of view, the most significant bit (MSB) planes have high adjacent correlation between the pixels whereas the least significant bit (LSB) planes contain comparatively more uncorrelated data. PRS with simple hardware like m-sequences and Gold sequences have less correlation between the adjacent bits. These can therefore serve as a good alternative for partially encrypting the MSB planes with low complexity to provide security against casual listeners. It is observed from the results that the new approach is able to reduce the residual intelligence as would have been obtained by encrypting the entire image.