Figure 3 | High-security encryption via operator-multiplexed holography. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Figure 3 | High-security encryption via operator-multiplexed holography.

Caption

Figure 3 | High-security encryption via operator-multiplexed holography. a, Design of the operator-multiplexed hologram. Binary patterns ”0” and ”1” are encoded into distinct operator pathways. The hologram is binarized using a modified off-axis encoding method and fabricated inside glass via femtosecond laser writing. b, Experimental reconstruction. Correct parameters reconstruct “0” and “1”, while deviations yield no discernible patterns. c, Plaintext-to-ciphertext conversion. Plaintext “SJTU” is converted to Morse code (“0” for dots, “1” for dashes) and mapped to sequential operator pathways. d, Synchronized keychain generation. Three parameter keys (TC, n, d) are generated, each strictly aligned with the binary sequence. e, Noise obfuscation. Random values are injected into the keychains to disrupt deterministic parameter correlations while preserving valid sequence alignment. f, Decryption workflow. User2 applies obfuscated keychains to reconstruct the hologram, filters noise via intensity thresholding, and decodes the Morse sequence to recover “SJTU”.

Credit

Yuping Chen et al.

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License

CC BY

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