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Strategy for steganography and information encryption-decryption using Fs laser-created luminescence in organic

Ruyue Que1, Olivier Plantevin2, Matthieu Lancry1

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This study introduces a novel two-level information security method using photoluminescence patterns. It enhances security against data leakage and environmental factors for advanced anti-counterfeiting applications.

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Area of Science:

  • Materials Science
  • Optics
  • Information Security

Background:

  • Luminescent materials are key for information security technologies like anti-counterfeiting.
  • Current methods face challenges: information leakage, duplication, and environmental sensitivity.

Purpose of the Study:

  • To develop a secure, hierarchical information storage and encryption method using tailored photoluminescence.
  • To overcome limitations of existing luminescence-based information security techniques.

Main Methods:

  • Utilized infrared femtosecond (fs) laser direct writing to create photoluminescence (PL) patterns.
  • Applied post-exposure to linearly polarized continuous-wave (CW) laser for polarization-dependent PL anisotropy.
  • Demonstrated hierarchical two-level information storage and encryption.

Main Results:

  • Achieved level-1 information storage via fs laser-induced PL.
  • Concealed level-2 information through polarization-selective bleaching of luminophores.
  • Validated the approach on Zeonex polymer and two other organic materials.

Conclusions:

  • The developed method offers enhanced security against brute-force attacks and environmental interference.
  • This versatile technique advances photoluminescence-based information encryption, decryption, and anti-counterfeiting (IEDAC) technologies.