Abstract

We propose an asymmetric optical image cryptosystem based on biometric keys and singular value decomposition (SVD) in the Fresnel transform domain. In the proposed cryptosystem, the biometric keys are palmprint phase mask generated by a palmprint, a chaotic phase mask, and an amplitude truncated Fourier transform, which can provide the cryptosystem with more data security due to the uniqueness of the palmprint. Two images are first encoded into a complex function, which then is modulated by the palmprint phase mask. A Fresnel transform and then an SVD operation are performed on the modulated result. The SVD operation is used to generate private secret keys, which makes the encryption secret keys and decryption secret keys different, and thus the encryption process and decryption process are different. In addition, multiple images are encrypted into a real-valued ciphertext, making it convenient to transport and record. Numerical simulation results have demonstrated that our proposed encryption system has robustness against statistical, occlusion, noise, and chosen-plaintext attacks.

© 2020 Optical Society of America

Optical double-image cryptosystem based on generalized singular value decomposition and five-dimensional hyperchaotic maps

Liao Zhang, Chen Tang, Yuxin Shen, and Rui Han
Appl. Opt. 62(3) 665-674 (2023)

Medical image encryption based on biometric keys and lower–upper decomposition with partial pivoting

Xiaohui Wang, Zheng Zhu, Fan Wang, Renjie Ni, Jun Wang, and Yuhen Hu
Appl. Opt. 60(1) 24-32 (2021)

Optical single-channel color image encryption based on chaotic fingerprint phase mask and diffractive imaging

Yonghui Wang, Qinyu Zhao, Haoran Zhang, Tianlun Li, Wenjun Xu, Shuaiqi Liu, and Yonggang Su
Appl. Opt. 62(4) 1009-1018 (2023)

Asymmetric double-image encryption based on chaotic random phase encoding

Yonggang Su, Xinyu Xue, Runzi Deng, Yonghui Wang, Qinyu Zhao, Tianlun Li, Yan Li, Shuaiqi Liu, and Jie Zhao
Appl. Opt. 61(26) 7608-7617 (2022)

Optical color image encryption based on chaotic fingerprint phase mask in various domains and comparative analysis

Yonggang Su, Wenjun Xu, Jie Zhao, Lei Chen, and Xiaoyan Tian
Appl. Opt. 59(2) 474-483 (2020)