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A secure image encryption scheme based on three different chaotic maps
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DOI：10.1007/s11042-021-11696-0.png)
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In the current decade, chaos based image encryption has distinctly captured a remarkable position in multimedia data security. In this paper, a hybrid chaos based image encryption scheme has been developed. A two-dimensional ecological chaotic map, namely Bed-dington, Free and Lawton (BFL) map has been combined with logistic map and Chebyshev map to generate a pseudo-random keystream for image encryption. In addition, an image substitution technique based on logistic map has been proposed. The random nature of keystream has been successfully tested by employing DIEHARD and NIST randomness test suites. Furthermore, the scheme has also been verified by histogram, correlation, global entropy, local entropy, key sensitivity and differential attack analyses. The proposed scheme achieves average 41.6% and 8.5% improvement in correlation value of cipher image and plaintext sensitivity, respectively, compared to Sheela et al.'s scheme.
Keyword:
Image encryption
Multi-dimensional Chaos
Pseudo-random key
Randomness test
Avalanche effect
Differential attack
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3
论文数:
2.0W
被引数:
3.2W
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