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首页> 外文会议>Conference on Real-Time Image Processing; 20080128-29; San Jose,CA(US) >Chaos-based image encryption scheme using Galois field for fast and secure transmission
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Chaos-based image encryption scheme using Galois field for fast and secure transmission

机译：使用Galois字段的基于混沌的图像加密方案，可实现快速，安全的传输

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摘要

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 chaos-based image encryption scheme using cryptographic operations based on Galois field of order 2~n 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.
机译：基于混沌的图像加密技术对于保护数字图像和视频的内容非常有用。他们使用传统的分组密码原理，即混乱混乱，像素扩散和轮数。传统分组密码的复杂结构使其不适用于数字图像和视频的实时加密。实时应用程序需要具有可接受安全性的快速算法。本文提出了一种简单的基于混沌的图像加密方案，该方案使用基于主密钥，会话密钥和密钥图像组合的2〜n阶Galois字段的加密操作进行加密。离散的2D混沌图和伪随机噪声也可用来阻止统计和差分攻击。与传统的基于混沌的方案相比，所提出的方法从关键图像生成混沌图，然后使用该混沌图像破坏要使用Galois场操作加密的图像的统计和感知属性。仿真测试使用真实和合成图像（渐变图像作为关键图像）来证明所提出方法的性能。结果表明，所提出的方法对于实时应用足够快并且提供了可接受的安全强度。

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