Document Image Secret Sharing Using Bit-Level Processing (WA-P7)

Author(s) : Rastislav Lukac (University of Toronto, Canada) Konstantinos Plataniotis (University of Toronto, Canada)

Abstract : A new bit-level based secret sharing scheme for encryption of private financial and pharmaceutical digital documents, and digital signature images is provided. The proposed $\{k,n\}$ secret-sharing method allows for secret sharing of both scanned binary documents and the computer-generated artworks encrypting the document image into $n$ shares. The secret information is recovered only if $k$ (or more) allowed shares are available for decryption. Cryptographic operations for both encryption and decryption procedures are directly performed in the decomposed bit-level domain. The methods reveals the original document unchanged and thus, the scheme satisfies the perfect reconstruction property.

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