Multi-image Encryption Algorithm Based on Multi-chaotic System
Aiming at the security problem of multiple images in transmission,this study proposes a multi-image encryption algorithm based on multi-chaotic systems.First,discrete wavelet transform is adopted to preprocess multiple images to get a large mosaic image.Then,a chaotic sequence is generated using logistic-sine-cosine(LSC)map to generate a matrix O for scrambling pixel positions.Finally,a hyper-chaotic Lorenz system is applied to generate a four-dimensional chaotic sequence.It is used to perform bidirectional diffusion and row-column scrambling on the scrambled image to obtain the final ciphertext image.The proposed method has a simple encryption and decryption process and high execution efficiency.The experimental results have been analyzed from multiple aspects and show that the algorithm has a large key space and can resist multiple attack methods,with good encryption performance and security.
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维普
