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首页> 外文期刊>Journal of information and computational science >A General Chaotic Key Stream Generator for Image Encryption
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A General Chaotic Key Stream Generator for Image Encryption

机译：通用混沌密钥流生成器，用于图像加密

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摘要

This paper proposes a more general chaotic algorithm to generate Independent and Identically Distributed (IID) chaotic key streams for image encryption. Given the arbitrary varieties in the conjugated cosine function, the theorem became a one-dimensional quadratic function. The algorithm proposed is more general that the two existing classes of chaotic algorithms can be included. The IID chaotic key steam can be generated by the specific interval division during the whole iteration process. The detailed theoretical derivation and the key stream generation processes were illustrated explicitly. The chaotic key streams generated passed the FIPS PUB 140-2 test, which checks the randomness and autocorrelation. For image encryption, first, the position of an image pixel was confused by a pre-random sequence produced from chaotic value sort transformation; then the image pixel is encrypted with the IID key stream through XOR operation. The encrypted image exhibits good characteristic in the aspect of Sensitivity analysis, Statistical analysis, and Correlation Coefficient Analysis. The algorithm presented is suitable for image encryption.
机译：本文提出了一种更通用的混沌算法来生成独立且相同分布的（IID）混沌密钥流，以进行图像加密。考虑到共轭余弦函数中的任意变化，该定理变为一维二次函数。所提出的算法更为笼统，可以包括两种现有的混沌算法。 IID混沌密钥流可以在​​整个迭代过程中通过特定的间隔划分来生成。明确说明了详细的理论推导和密钥流生成过程。生成的混沌密钥流通过了FIPS PUB 140-2测试，该测试检查了随机性和自相关。对于图像加密，首先，图像像素的位置被混沌值排序转换产生的随机前序列所混淆；然后通过XOR操作使用IID密钥流对图像像素进行加密。加密图像在灵敏度分析，统计分析和相关系数分析方面表现出良好的特性。提出的算法适用于图像加密。

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