ETRI Journal

Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Visual Cryptography Based on an Interferometric Encryption Technique

  • Received : 2001.08.20
  • Published : 2002.10.31
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Abstract

This paper presents a new method for a visual cryptography scheme that uses phase masks and an interferometer. To encrypt a binary image, we divided it into an arbitrary number of slides and encrypted them using an XOR process with a random key or keys. The phase mask for each encrypted image was fabricated nuder the proposed phase-assignment rule. For decryption, phase masks were placed on any path of the Mach-Zehnder interferometer. Through optical experiments, we confirmed that a secret binary image that was sliced could be recovered by the proposed method.

Keywords

References

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