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Visual Secret Sharing Schemes for Multiple Secret Images Allowing the Rotation of Shares
Mitsugu IWAMOTO Lei WANG Kazuki YONEYAMA Noboru KUNIHIRO Kazuo OHTA
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/05/01
Online ISSN: 1745-1337
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
visual secret sharing schemes, visual cryptography, secret sharing schemes, multiple secret images, rotation of shares,
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In this paper, a method is proposed to construct a visual secret sharing (VSS) scheme for multiple secret images in which each share can be rotated with 180 degrees in decryption. The proposed VSS scheme can encrypt more number of secret images compared with the normal VSS schemes. Furthermore, the proposed technique can be applied to the VSS scheme that allows to turn over some shares in decryption. From the theoretical point of view, it is interesting to note that such VSS schemes cannot be obtained from so-called basis matrices straightforwardly.