Secret sharing schemes are cryptographic primitives for distributing shares of a secret amongst a set of entities in such a way that only certain coalitions can reconstruct the secret from their shares. Secret sharing schemes are highly versatile primitives that are particularly useful in applications where there is no single point of trust. Traditionally, secret sharing schemes are studied in ...

Building upon the recent work in communication efficient classical secret sharing schemes of Bitar and El Rouayheb, we study communication efficient quantum secret sharing schemes. In the standard model of quantum secret sharing, typically one is interested in minimal authorized sets for the reconstruction of the secret. In such a setting, reconstruction requires the communication of all the sh...

The multiple assignment scheme is to assign one or more shares to single participant so that any kind of access structure can be realized by classical secret sharing schemes. We propose its quantum version including ramp secret sharing schemes. Then we propose an integer optimization approach to minimize the average share size. key words: quantum secret sharing, multiple assignment scheme, acce...

This document provides the basic concept of Secret Sharing technique in practice. Main overview of some current secret sharing schemes are discussed according to the papers, provided during the course. Future scope and possibilities of secret sharing schemes are also introduced.