Book ChapterDOI
An Extended Region Incrementing Visual Cryptography Scheme Using Unexpanded Meaningful Shares
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TLDR
A new Extended RIVC scheme is proposed which uses the characteristics of both RIVCS and Extended VCS which adds a meaningful cover image to the shares which solves all the above mentioned drawbacks of the existing schemes.Abstract:
Region Incrementing Visual Cryptography (RIVC) is an important and active research area. In (2, n) region incrementing visual cryptographic scheme, a single secret image is divided into multiple secret regions. We need at least 2 secret shares to be superimposed to reveal the 1st secret region. By stacking more and more shares we get the entire image revealed. All the existing schemes for RIVCS suffer from the problems like color reversal, pixel expansion and low contrast. Also conventional RIVCS schemes generate noise like shares. The management of these shares is also problem, as there is no way to identify these shares. Thus we are proposing a new Extended RIVC scheme which uses the characteristics of both RIVCS and Extended VCS which adds a meaningful cover image to the shares. Our proposed method solves all the above mentioned drawbacks of the existing schemes. The main contributions in this paper are: a) No pixel expansion b)Meaningful share images c)Increased contrast d) No color reversal e) Improved Security.read more
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Journal ArticleDOI
Flexible meaningful visual multi-secret sharing scheme by random grids
Bo-Yuan Huang,Justie Su-Tzu Juan +1 more
TL;DR: This study proposes an advanced meaningful VMSS scheme that can flexibly adjust the quality between shares and restored images and offers seven attractive features that make it notably flexible in theoretical and practical use.
Journal ArticleDOI
Improved Henon Chaotic Map-based Progressive Block-based visual cryptography strategy for securing sensitive data in a cloud EHR system
Aneruth Mohanasundaram,Aruna Sk +1 more
TL;DR: In this paper , an improved Henon Chaotic Map-based Progressive Block-based VC (IHCMPBVC) scheme is proposed to prevent the leakage and destruction of sensitive information during an exchange and encryption.
References
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Visual Cryptography
Moni Naor,Adi Shamir +1 more
TL;DR: In this paper, a new type of cryptographic scheme, which can decode concealed images without any cryptographic computations, is proposed, which is called k-out-of-n secret sharing.
Journal ArticleDOI
Visual Cryptography for General Access Structures
TL;DR: This paper examines graph-based access structures, i.e., access structures in which any qualified set of participants contains at least an edge of a given graph whose vertices represent the participants of the scheme, and provides a novel technique for realizing threshold visual cryptography schemes.
Journal ArticleDOI
Visual cryptography for color images
TL;DR: Three methods for visual cryptography of gray-level and color images based on past studies in black-and-white visual cryptography, the halftone technology, and the color decomposition method are proposed.
Journal ArticleDOI
New visual secret sharing schemes using probabilistic method
TL;DR: The frequency of white pixels is used to show the contrast of the recovered image and the scheme is nonexpansible and can be easily implemented on a basis of conventional VSS scheme.