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Journal Article
Visual Cryptography Based on an Interferometric Encryption Technique
- Authors
- Sang-Su Lee, Jung-Chan Na, Sung-Won Sohn, Chee Hang Park, Dong-Hoan Seo, Soo-Joong Kim
- Issue Date
- 2002-10
- Citation
- ETRI Journal, v.24, no.5, pp.373-380
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- 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 au 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 under 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.
- KSP Keywords
- Encryption technique, Mach-Zehnder(MZ), Mach-Zehnder Interferometer(MZI), Random Key, Visual cryptography(VC), Visual cryptography scheme(VCS), XOR process, binary image, encrypted image, new method, phase mask