Collaborative Visual Cryptography Schemes

Jia, Xingxing; Wang, Daoshun; Nie, Daxin; Zhang, Chaoyang

doi:10.1109/tcsvt.2016.2631404

Cited by 48 publications

(8 citation statements)

References 28 publications

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“…Although the scheme in [33] can realize a non-expanded CBW-VCS, it still needs codebook design. Moreover, other related schemes [15,24,25] utilize integer linear programming (ILP) to construct VCSs with a small pixel expansion, whereas their ultimate goal is still to design codebooks and the design process is slightly complicated. In addition, the schemes in [25,29] are suitable for general access structures.…”

Section: Feature Comparisonmentioning

confidence: 99%

Contrast-Enhanced Color Visual Cryptography for (k, n) Threshold Schemes

Liu

Zhu

Ding

et al. 2022

ACM Trans. Multimedia Comput. Commun. Appl.

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In traditional visual cryptography schemes (VCSs), pixel expansion remains to be an unsolved challenge. To alleviate the impact of pixel expansion, several colored-black-and-white VCSs, called CBW-VCSs, were proposed in recent years. Although these methods could ease the effect of pixel expansion, the reconstructed image obtained by these methods may also suffer from low contrasts. To address this issue, we propose a contrast-enhanced ( k , n ) CBW-VCS based on random grids, named ( k , n ) RG-CBW-VCS, in this article. By applying color random grids, a binary secret image is encrypted into n color shares that have no pixel expansion. When any k 1 ( k 1 ≥ k ) color shares are collected together, the stacked results of them can be identified as the secret image; whereas the superposition of any k 2 ( k 2 < k ) color shares shows nothing. Through theoretical analysis and experimental results, we justify the effectiveness of the proposed ( k , n ) RG-CBW-VCS. Compared with related methods in feature, contrast, and pixel expansion, the results indicate that the proposed method generally achieves better performance.

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Section: Feature Comparisonmentioning

confidence: 99%

Contrast-Enhanced Color Visual Cryptography for (k, n) Threshold Schemes

Liu

Zhu

Ding

et al. 2022

ACM Trans. Multimedia Comput. Commun. Appl.

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“…deterministic visual cryptography that deterministic and random grid visual cryptography are strictly related. Xingxing Jia et al [5] designed A (k, n)-conventional visual cryptography (VC) method to share one secret and each participant takes one share. Collaborative visual cryptography (CVC) schemes into the multiple secrets VC scheme with a general access structure.…”

Section: IImentioning

confidence: 99%

A Survey on Secure Server Verification Using Visual Cryptography on Normal Images

Pawar¹

2019

IJRASET

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This paper gives a survey of different method used by the researcher to avoid phishing attacks which is one of the online attacks that have been increased due to an online transaction. Phishing is an endeavor by an individual or a group to attain personal confidential information such as passwords, credit card information etc from unsuspecting victims for identity theft, financial gain and other fraudulent activities.Here we propose an abstract view of the system which we are developing named as "Secure Server Verification by Using Visual Cryptography and normal image" to solve the problem of phishing using Visual Cryptography (VC). I.

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“…al. [15] developed collaborative visual cryptography scheme. It is used to embed multiple secrets for general access structure.…”

Section: Fig1 Example: Block Of Pixels Substituted For Single Pixelmentioning

confidence: 99%

Secure Secret Image Sharing using Histogram Localization Based Block wise Methodology

Braja¹,

Dharun²,

Brabin³

2019

IJRTE

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Various types of encryption techniques have been used for data security. Complex algorithms are followed for this purpose in most of the methods. Confidentiality is provided by a technique called visual cryptography excluding of any intricate computations and algorithms. In this paper, we put forward an innovative method called Histogram Localization based Blockwise (HLB) approach to solve pixel expansion problem at the same time it will increase the security and visual quality for highly confidential secret image which is in color. According to this method, the secret shares are generated based on the histogram and also the number of black pixels in the corresponding block. The image size of resultant shares is same as in the original secret image. These shares are distributed to participants, and human vision system is used for decryption purpose.

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Collaborative Visual Cryptography Schemes

Cited by 48 publications

References 28 publications

Contrast-Enhanced Color Visual Cryptography for (k, n) Threshold Schemes

Contrast-Enhanced Color Visual Cryptography for (k, n) Threshold Schemes

A Survey on Secure Server Verification Using Visual Cryptography on Normal Images

Secure Secret Image Sharing using Histogram Localization Based Block wise Methodology

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