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Multi-user image encryption algorithm based on synchronized random bits generator in semiconductor lasers network
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DOI：10.1007/s11042-019-07796-7.png)
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A chaos-based public channel image encryption algorithm among three users is proposed, where the random bits (RBs) generated in a star-type chaotic laser network can be well synchronized and are used as the keys. The proposed algorithm is simple and efficient. Firstly, random bits with verified randomness are generated from the synchronized chaotic semiconductor lasers in a star-type network at a rate of 10Gb/s. Next, lower-triangular error-bits detection is employed to delete the different bits among all the parties over the public channel. Based on the synchronized RBs, the XOR operation is used to diffuse the plain image. Then the hash algorithm is used to get the control parameters matrix from the plain image, and 3D cat map is used to confuse the pixel position through the parameters matrix. Finally, the encrypted image is transmitted in the public channel. The performance tests results, such as key sensitivity, histogram, correlation, differential attack, robustness and entropy analysis, show that the suggested algorithm prevents a powerful computational eavesdropper. Besides, the running speed of this algorithm is linear with the size of plain image. These results open possibilities for multi-user secure communication application.
Keyword:
Multi-user secure encryption
Semiconductor laser
Information reconciliation
Physical random bits
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3
论文数:
2.0W
被引数:
3.2W
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A fast chaos-based image encryption scheme with a novel plain image-related swapping block permutation and block diffusion基于混沌的快速图像加密方案，具有新颖的与纯图像相关的交换块置换和块扩散
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