A novel visual cryptography scheme based on substitution cipher

2013 ◽  
Author(s):  
Gyan Singh Yadav ◽  
Aparajita Ojha
Keyword(s):  
Visual Cryptography ◽  
Visual Cryptography Scheme ◽  
Substitution Cipher

Security Concern and Countermeasures for Cheating in Visual Cryptography

2018 ◽  
Vol 6 (8) ◽  
pp. 277
Author(s):  
Ekta Y
Keyword(s):  
Communication System ◽  
Visual Cryptography ◽  
Detection Methods ◽  
Information Communication ◽  
New Approach ◽  
The World ◽  
Visual Cryptography Scheme ◽  
Prevention Methods ◽  
Security Concern

As IT sector is ruling the world now,confidentiality and security of information has become the most important inseparable aspect in information communication system. Keeping in view the same, a new approach called Visual Cryptography (VC) has been suggested by many researchers but there are some limitations with this scheme and cheating is one of the main problem among them. This paper intends to show the basis of cheating in VC in terms of cheating process, its detection methods and its prevention methods suggested by various researchers along with their merits and demerits. Finally, a good Cheating Immune Visual Cryptography Scheme (CIVCS) has been discussed which states the properties to be adopted by every Visual Cryptography scheme to make it immune to cheating attacks.

Shift visual cryptography scheme of two secret images*

2003 ◽  
Vol 13 (6) ◽  
pp. 457-463
Author(s):  
Daoshun Wang ◽  
Ping Luo ◽  
Lu Yang ◽  
Dongxu Qi ◽  
Yiqi Dai
Keyword(s):  
Visual Cryptography ◽  
Visual Cryptography Scheme

scholarly journals VISUAL CRYPTOGRAPHY FOR COLOR IMAGES

2013 ◽  
pp. 147-149
Author(s):  
ASHWATHIMESANGLA AO
Keyword(s):  
Secret Sharing ◽  
Visual Cryptography ◽  
Color Images ◽  
Secret Sharing Scheme ◽  
Secret Image ◽  
Secret Information ◽  
Host Image ◽  
Sharing Scheme ◽  
Visual Cryptography Scheme

Visual cryptography is a secret sharing scheme for encrypting a secret image, it is a perfectly secure way that allows secret sharing without any cryptographic computation, which is termed as Visual Cryptography Scheme (VCS). In this paper secret image is divided into shares (printed on transparencies), and each share holds some information. At the receiver this shares are merged to obtain the secret information which is revealed without any complex computation. The proposed algorithm is for color host image, divided into three color planes Red, Green, Blue and merged with secret image which is binarized and divided into shares. The decoding requires aligning the result obtained by merging color host image and shares, so as to obtain the secret image.

Perfect recovery of XOR-based visual cryptography scheme

2018 ◽  
Vol 78 (2) ◽  
pp. 2367-2384 ◽  
Author(s):  
Zhengxin Fu ◽  
Yuqiao Cheng ◽  
Bin Yu
Keyword(s):  
Visual Cryptography ◽  
Visual Cryptography Scheme ◽  
Perfect Recovery
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