Rapid and brief communication: Bit-level based secret sharing for image encryption

Authors:
Rastislav Lukac;Konstantinos N. Plataniotis
Affiliations:
Bell Canada Multimedia Laboratory, Room BA 4157, The Edward S. Rogers Sr. Department of ECE, University of Toronto, 10 King's College Road, Toronto, Ont., Canada M5S 3G4;Bell Canada Multimedia Laboratory, Room BA 4157, The Edward S. Rogers Sr. Department of ECE, University of Toronto, 10 King's College Road, Toronto, Ont., Canada M5S 3G4
Venue:
Pattern Recognition
Year:
2005

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Abstract

A new secret sharing scheme capable of protecting image data coded with B bits per pixel is introduced and analyzed in this paper. The proposed input-agnostic encryption solution generates B-bit shares by combining bit-level decomposition/stacking with a {k,n}-threshold sharing strategy. Perfect reconstruction is achieved by performing decryption through simple logical operations in the decomposed bit-levels without the need for any postprocessing operations. The framework allows for cost-effective cryptographic image processing of B-bit images over the Internet.