国際会議
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Weakly Secure Visual Secret Sharing Schemes
- 著者
- M. Iwamoto
- 会議名
- ISITA 2008
- ページ
- 42–47
- 発行年
- 2008
- 発表日
- Dec. 7–10, 2008
Abstract
We introduce a visual secret sharing (VSS) scheme with a new security condition, called a weakly secure VSS scheme, which is not unconditionally secure in general, but is designed to be secure for human eyesight. It is shown in this paper that the weakly secure VSS scheme is equivalent to the unconditional one for black-white binary secret images although they are different for color secret images. This fact implies that, at the sacrifice of security, the clearer color images can be reproduced by the weakly secure VSS schemes compared with the unconditional ones. Furthermore, some constructions of weakly secure VSS schemes are presented.