Paper 2012/315
Using Variance to Analyze Visual Cryptography Schemes
Teng Guo, Feng Liu, ChuanKun Wu, and YoungChang Hou
Abstract
A visual cryptography scheme (VCS) is a secret sharing method, for which the secret can be decoded by human eyes without needing any cryptography knowledge nor any computation. Variance is first introduced by Hou et al. in 2005 and then thoroughly verified by Liu et al. in 2012 to evaluate the visual quality of size invariant VCS. In this paper, we introduce the idea of using variance as an error-detection measurement, by which we find the security defect of Hou et al.'s multi-pixel encoding method. On the other hand, we find that variance not only effects the visual quality of size invariant VCS, but also effects the visual quality of VCS. At last, average contrast associated with variance is used as a new criterion to evaluate the visual quality of VCS.
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- visual secret sharing
- Contact author(s)
- guoteng cas @ gmail com
- History
- 2012-06-05: received
- Short URL
- https://ia.cr/2012/315
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2012/315,
author = {Teng Guo and Feng Liu and ChuanKun Wu and YoungChang Hou},
title = {Using Variance to Analyze Visual Cryptography Schemes},
howpublished = {Cryptology {ePrint} Archive, Paper 2012/315},
year = {2012},
url = {https://eprint.iacr.org/2012/315}
}
