Revisiting Proactive Secret Sharing Based on Shamir’s Scheme

The Secret Sharing scheme assumes long-lived shares. However the protection provided for such long lived and sensitive shares may be insufficient. The security in a system that is exposed to attacks and break-ins might become exhausted. The goal of the pro-active security scheme is to prevent the adversary from learning the secret or from destroying it. The Shamir’s Secret Sharing is pioneer method for secret sharing. Due to its security in information theoretic sense compare to many secret sharing methods researchers found it more useful and interesting. In this paper a novel proactive secret sharing scheme for image is proposed based on Shamir’s secret sharing. The proposed schemes provides the extended capabilities for proactiveness like adding new shareholder, removing shareholder and renewing shares and recover lost or corrupted shares.