Certificateless Multi-Signcryption Scheme without Pairing

Abstract

Certificateless public key cryptography is a new paradigm that simplifies the traditional PKC and solves the inherent key escrow problem suffered by ID-PKC. As realizing both encryption and signature security goals, certificateless signcryption is one of the most important security primitives in CL-PKC. To adapt multi-user settings, we present a certificateless multi-signcryption scheme without pairing. The performace analysis shows that the scheme is very efficient.