scholarly journals Visual Cryptography Schemes with Dihedral Group Access Structure for Many Images

2007 ◽  
pp. 344-359 ◽  
Author(s):  
Miyuki Uno ◽  
M. Kano
Keyword(s):  
Dihedral Group ◽  
Visual Cryptography ◽  
Access Structure

Visual Cryptography for General Access Structure Using Pixel-block Aware Encoding

2008 ◽  
Vol 3 (12) ◽  
Author(s):  
Haibo Zhang ◽  
Xiaofei Wang ◽  
Wanhua Cao ◽  
Youpeng Huang
Keyword(s):  
Visual Cryptography ◽  
Access Structure ◽  
General Access Structure

scholarly journals Major Developments in Visual Cryptography

2019 ◽  
Vol 9 (1S6) ◽  
pp. 81-88
Keyword(s):  
Visual Information ◽  
Visual Cryptography ◽  
The Other ◽  
Access Structure ◽  
Information Protection ◽  
General Access Structure ◽  
Encryption And Decryption ◽  
Transmission Of Information ◽  
The Right ◽  
Correct Image

Visual cryptography is a cryptographic mechanism that gets applied in visual information protection for secured transfer of data. The encryption makes the decryption a mechanical operation.The secret image gets converted into several share images. The share images are distorted/ noisy images which will give the correct image only when placed in the right combination. This paper reviews various visual encryption and decryption mechanism with the safe transmission of information from the literature. This paper about visual cryptography discusses, general access structure, halftone, colour, progressive, region incrementing, extended visual cryptography, colour extended visual cryptography, XOR and OR visual cryptography and the applications of visual cryptography. The applications discussed here are banking security, steganography, crime records, intelligence communication, multilayered Id cards and fingerprint records. The paper provides an overview of advances in VCS where each technique overcomes the problem(s) faced in the other manner.

Logic Test of Single Cycle Access Structure

2012 ◽  
Vol 2 (11) ◽  
pp. 203-205
Author(s):  
S. Ali Ahmed S. Ali Ahmed ◽  
◽  
Syed Jahangir Badashah ◽  
A. Farooq Hussain
Keyword(s):  
Access Structure ◽  
Single Cycle

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.

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