Open AccessVisual Cryptography Based on an Interferometric Encryption Technique
Author(s) -
Lee SangSu,
Na JungChan,
Sohn SungWon,
Park Cheehang,
Seo DongHoan,
Kim SooJoong
Publication year - 2002
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.02.0102.0505
Subject(s) - encryption , visual cryptography , interferometry , computer science , binary number , key (lock) , cryptography , image (mathematics) , phase (matter) , path (computing) , optics , computer vision , algorithm , physics , mathematics , arithmetic , computer security , computer network , secret sharing , quantum mechanics
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 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.