Meliorated Multi Layered Key Less Mechanism in Visual Cryptography 
Kalyan Das1, Sayantan Samajpati2, Abhirup Das3, Samir Kumar Bandyopadhyay4
1Kalyan Das*, Assistant Professor, Department of Information Technology, St. Thomas’ College of Engineering and Technology, Kolkata, India.
2Sayantan Samajpati, Student, Department of Information Technology, St. Thomas’ College of Engineering and Technology, Kolkata, India.
3Abhirup Das, Student, Department of Information Technology, St. Thomas’ College of Engineering and Technology, Kolkata, India.
4Prof. Samir Kumar Bandyopadhyay, Professor, Department of Computer Science & Engineering, University of Calcutta, India
Manuscript received on April 11, 2020. | Revised Manuscript received on May 15, 2020. | Manuscript published on June 30, 2020. | PP: 404-408 | Volume-9 Issue-5, June 2020. | Retrieval Number: E9303069520/2020©BEIESP | DOI: 10.35940/ijeat.E9303.069520
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Visual Cryptography algorithm primarily ensures lossless recovery of the secret image, by breaking the secret message into multiple shares before sending through a channel, which increases the bandwidth requirement of the channel due to increase in the size. The proposed algorithm deals with this problem by using two exclusive locks on the image to be shared which are applied once on the sender side and once on the receiver side. Thereafter sender and receiver open’s their individual locks to finally retrieve the secret image at the receiver end.
Keywords: Invariant image size, key less secret sharing, reversible (loss less) data hiding, secret sharing