Secret Sharing and Shared Information

Secret Sharing and Shared Information

Secret sharing is a cryptographic discipline in which the goal is to distribute information about a secret over a set of participants in such a way that only specific authorized combinations of participants together can reconstruct the secret. Thus, secret sharing schemes are systems of variables in which it is very clearly specified which subsets have information about the secret. As such, the...

Information Flow in Secret Sharing Protocols

The entangled graph states [9] have emerged as an elegant and powerful quantum resource, indeed almost all multiparty protocols can be written in terms of graph states including measurement based quantum computation (MBQC), error correction and secret sharing amongst others. In addition they are at the forefront in terms of implementations. As such they represent an excellent opportunity to mov...

Information-theoretically Secure Strong Verifiable Secret Sharing

In a (t,n) secret sharing scheme, a mutually trusted dealer divides a secret into n shares in such a way that any t or more than t shares can reconstruct the secret, but fewer than t shares cannot reconstruct the secret. When there is no mutually trusted dealer, a (n,t,n) secret sharing scheme can be used to set up a (t,n) secret sharing because each shareholder also acts as a dealer to decide ...

Secret Sharing

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.

Secure Multiparty Computation and Secret Sharing - An Information Theoretic Appoach