International Journal of Network Security & Its Applications (IJNSA) - ERA, WJCI Indexed

International Journal of Network Security & Its Applications (IJNSA) - ERA, WJCI Indexed

ISSN: 0974 - 9330 (Online); 0975 - 2307 (Print)

https://airccse.org/journal/ijnsa.html

Design and Implementation of Hierarchical Visual Cryptography with Expansionless Shares

Pallavi Vijay Chavan1, Mohammad Atique2 and Latesh Malik1, 1GHRCE - Nagpur, India and 2SGBAU - Amravati, India

Abstract

Novel idea of hierarchical visual cryptography is stated in this paper. The key concept of hierarchical visual cryptography is based upon visual cryptography. Visual cryptography encrypts secret information into two pieces called as shares. These two shares are stacked together by logical XOR operation to reveal the original secret. Hierarchical visual cryptography encrypts the secret in various levels. The encryption in turn is expansionless. The original secret size is retained in the shares at all levels. In this paper secret is encrypted at two different levels. Four shares are generated out of hierarchical visual cryptography. Any three shares are collectively taken to form the key share. All shares generated are meaningless giving no information by visual inspection. Performance analysis is also obtained based upon various categories of secrets. The greying effect is completely removed while revealing the secret Removal of greying effect do not change the meaning of secret.

Keywords

Visual cryptography, greying effect, shares, key share

Original Source URL: https://airccse.org/journal/nsa/6114nsa08.pdf

Volume URL: https://airccse.org/journal/jnsa14_current.html