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Optical phase-truncation-based double-image encryption using equal modulus decomposition and random masks
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DOI：10.1038/s41598-024-57790-9.png)
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Abstract
En 中文
This work reports an optical double-image crosstalk free encryption scheme that employs equal modulus decomposition and random masks. For the encryption, two plaintexts by a random amplitude mask and a random phase mask have been encrypted into a single ciphertext mask and two private key masks. Owing to the two random masks introduced, the functional relation between the plaintext pair and the ciphertext indirectly cause the paucity of constraints employed for the specific attack. Unlike the traditional phase-truncation-based techniques, this scheme is immune to the information leakage and different types of attacks. Furthermore, the three different diffraction distances and the illuminating wavelength also function as four additional keys to significantly reinforce the security. Simulation results demonstrate the feasibility and validity of the proposal.
Keywords:
ASYMMETRIC CRYPTOSYSTEM
RETRIEVAL ALGORITHM
PLAINTEXT ATTACK
COHERENT SUPERPOSITION
SCHEME
INTERFERENCE
PLANE
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