Optical voice encryption based on speckle-illuminated fourier ptychography and plaintext-related chaotic random phase mask
Jiaxin Li,
Wenjun Xu,
Yonghui Wang
et al.
Abstract:In this paper, we propose an optical voice encryption scheme based on speckle-illuminated Fourier ptychography (FP) and plaintext-related chaotic random phase mask (CRPM). In this proposed encryption scheme, the plaintext-related CRPMs are generated by chaotic Lozi map and secure hash algorithm (SHA-256). During the encryption process, the voice signal to be encrypted is first converted into a two-dimensional (2D) voice map. Then, with the help of CRPMs and speckle-illuminated FP, the voice map is encrypted in… Show more
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