Communication science et technologie
Volume 18, Numéro 1, Pages 6-14
2020-07-01

An Encryption Algorithm For Satellite Images Based On Chaotic Sequences And A Rotation System



Authors : Naim M. .

Abstract

In recent years, the demand for conserving the secure transmission of satellite images from satellites to ground stations is increasing. To avoid hacking these images from illegal usage and unauthorized access. The most efficient solution for secure transmission is image encryption, which is an effective technique for protecting sensitive and important images, although that the encryption algorithms which, used in present satellite missions are typically obsolete and not suitable algorithms nowadays such as DES, 3 DES and AES due to their intrinsic characteristics such as size, high redundancy, strong correlation between adjacent pixels, etc. In this paper, we propose an efficient encryption algorithm based on Lorenz Chaotic System and proposed a rotation system for encryption and decryption satellite images on board. Experimental and analysis results shows that the proposed algorithm is efficient method and evaluated security performances and has less time for encryption and decryption when compared to recent works in term of intrinsic characteristics and avoid threats and problems in classical algorithms.

Keywords

Encryption algorithms/ Chaotic Lorenz System/ Satellite images/ Cyclic Rotation/ Earth observation.

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