Chaos-based image encryption scheme using Galois field for fast and secure transmission

Shan Suthaharan

doi:10.1117/12.765718

26 February 2008 Chaos-based image encryption scheme using Galois field for fast and secure transmission

Shan Suthaharan

Proceedings Volume 6811, Real-Time Image Processing 2008; 681105 (2008) https://doi.org/10.1117/12.765718
Event: Electronic Imaging, 2008, San Jose, California, United States

Abstract

Chaos-based image encryption techniques are very useful for protecting the contents of digital images and videos. They use traditional block cipher principles known as chaos confusion, pixel diffusion and number of rounds. The complex structure of the traditional block ciphers makes them unsuitable for real-time encryption of digital images and videos. Real-time applications require fast algorithms with acceptable security strengths. This paper presents a simple chaosbased image encryption scheme using cryptographic operations based on Galois field of order 2ⁿ with combinations of a master key, a session key and a key image. A discretized 2D chaotic map and a pseudo random noise are also used to thwart statistical and differential attacks. The proposed approach, in contrast to traditional chaos-based schemes, generates a chaotic map from the key image and then uses this chaotic image to destroy the statistical and perceptual properties of the image to be encrypted using the Galois field operations. The simulation tests use real and synthetic images (a gradient image as the key image) to demonstrate the performance of the proposed approach. The results show that the proposed approach is fast enough for real-time applications and provides acceptable security strength.

Citation Download Citation

Shan Suthaharan "Chaos-based image encryption scheme using Galois field for fast and secure transmission", Proc. SPIE 6811, Real-Time Image Processing 2008, 681105 (26 February 2008); https://doi.org/10.1117/12.765718

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