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Color image encryption based on finger vein key and off-axis digital holography with phase-modulated reference light.

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This study introduces a novel color image encryption method using finger vein biometrics and off-axis digital holography. The technique offers secure, contactless authentication and robust ciphertext for enhanced data protection.

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Area of Science:

  • Computer Science
  • Biometrics
  • Cryptography
  • Optics

Background:

  • Traditional image encryption methods face challenges in security and key management.
  • Biometric authentication offers a unique and secure alternative for access control.
  • Digital holography provides a robust platform for optical information processing and encryption.

Purpose of the Study:

  • To propose a novel color image encryption method utilizing finger vein biometrics and off-axis digital holography.
  • To enhance security, key space, and robustness in color image encryption.
  • To enable contactless authentication and secure ciphertext portability.

Main Methods:

  • Color image encryption using channel separation, DNA coding, and double random phase coding (DRPE).
  • Generation of finger vein-based quantum matrix keys for scrambling, masking, and phase masking.
  • Off-axis digital holography encoding (ODHE) with phase-modulated reference light for holographic ciphertext generation.
  • Contactless finger vein authentication for decryption access.

Main Results:

  • The proposed method successfully encrypts and decrypts color images with high fidelity.
  • Numerical simulations demonstrate high security levels, a large key space, and robustness against attacks.
  • The finger vein key ensures secure and contactless authentication, enhancing overall system security.

Conclusions:

  • The developed color image encryption method is highly feasible and secure.
  • The integration of finger vein biometrics and digital holography offers significant advantages for secure image transmission.
  • The method provides a robust and portable solution for sensitive color image data protection.