A CRYPTOGRAPHY TECHNIQUE FOR DATA EMBEDDING IN PIXEL

Author’s Name : Banupriya M

Volume 01 Issue 01  Year 2014  ISSN No:  2349-3828  Page no: 22-25

Abstract -Visual cryptography (VC) is a technique of encoding a important secret image hooked on shares such that loading an adequate number of shares exposes the secret image. Shares are generally offered in transparencies. Each observer holds a transparency. Most of the existing work on VC focuses on cultivating two parameters: pixel expansion and contrast. In this paper, we considered the cheating problem in VC and extended VC. This system considered the attacks of wicked adversaries who may turn from the scheme in any way. This system offered three cheating methods and useful them on attacking existent VC or extended VC schemes.The proposed a common method that alters a VCS to another VCS that has the belongings of cheating prevention. The above of the conversion is close to optimal in both contrast digressions and pixel expansion.

Keywords –Visual Cryptography, Pixel expansion, contrast Digression, Transparencies, VC Schemes.