A Computational Review of Identity-based Signcryption Schemes

Since 2002, several identity based signcryption schemes have been proposed. The purpose of designing a signcryption scheme is to perform signature and encryption both in one step but at lesser cost than performing signature and then encryption separately. In this paper, we present a literature survey on signcryption schemes for identity based setup. Our primary focus is on the schemes recently developed in standard model as the schemes in random oracle model are not actually practical. We present detailed comparison among the schemes based on computation cost, security features and suggest some final recommendation based on some future perspectives.