Group oriented cryptosystems based on linear access structures

Abstract

Group (or society) oriented cryptosystems are important in modern cryptography, they have wide application in areas such as group private communication and electronic commerce. Practical group oriented cryptosystems have been constructed using the techniques of secret sharing, but almost all such cryptosystems are based on threshold access structures, this is a great limitation to their application. In this paper, we consider group oriented cryptosystem based on vector space access strucures, a secure and practical group oriented cryptosystem based on vector space access structures is presented. © Springer-Verlag; 2004.