Secret Sharing schemes based on Room squares

Abstract

. In this paper, we describe secret sharing schemes. We discuss Room squares and their critical sets. We propose a model of secret sharing based on critical sets of Room squares. 1 Introduction In information based systems, the integrity of the information is commonly provided for by requiring that certain operation(s) can be carried out only by one or more participants who have access rights. Access is gained by a key, password or token, and governed by a secure key management scheme. If the key or password is shared between several participants in such a way that it can be reconstructed only by a responsible group acting in agreement, then a high degree of security is attained. Shared security systems, of this sort, are also used in financial institutions, in communication networks, in computing systems serving educational institutions and distribution environments. However, the best known examples of shared security systems are in the military: for instance, in activating a nucl...