Abstract

Satellite images have key features such as; large data size, strong correlation between adjacent pixels and high redundancy. Unfortunately, traditional operation modes used to implement the Advanced Encryption Standard (AES) encrypt data without taking into account these specific image features. As a result, the traditional modes are not suitable for image encryption. In this paper, we present a robust satellite image encryption scheme based on discretized chaotic maps and AES. The discretized chaotic maps are used to achieve a confusion and key generation in order to improve the performance of security, especially the sensitivity to plain image. The simulation results show that the proposed technique presents attractive features, including a high level of security, large key space with improved sensitivities to key and plain image.

中文翻译：

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基于AES和离散混沌映射的卫星图像加密。

摘要

卫星图像具有以下关键特征：数据量大，相邻像素之间的相关性强，冗余度高。不幸的是，用于实现高级加密标准（AES）的传统操作模式会在不考虑这些特定图像功能的情况下对数据进行加密。结果，传统模式不适用于图像加密。在本文中，我们提出了一种基于离散混沌图和AES的鲁棒卫星图像加密方案。离散混沌图用于实现混淆和密钥生成，以提高安全性，特别是对纯图像的敏感性。仿真结果表明，所提出的技术具有吸引人的特征，包括高安全性，较大的密钥空间以及对密钥和普通图像的敏感性提高。