Efficient Certificateless Signcryption Tag-KEMs for Resource-constrained Devices

TL;DR

This paper introduces two efficient certificateless signcryption tag-KEM protocols designed for resource-constrained devices, utilizing elliptic curves without pairings to enhance performance and practicality.

Contribution

The paper presents two novel CLSC-TKEM protocols, LSW-CLSC-TKEM and DKTUTS-CLSC-TKEM, optimized for resource-limited environments using pairing-free elliptic curve instantiations.

Findings

Protocols are pairing-free, enhancing efficiency on constrained devices.

Both schemes are based on established cryptographic primitives for improved security.

Designed specifically for resource-constrained environments, suitable for IoT applications.

Abstract

Efficient certificateless one-pass session key establishment protocols can be constructed from key encapsulation mechanisms (KEMs) by making use of tags and signcryption schemes. The resulting primitives are referred to as Certificateless Signcryption Tag Key Encapsulation Mechanisms (CLSC-TKEMs). In this paper we propose two novel CLSC-TKEM protocols, the first, named LSW-CLSC-TKEM, makes use of the signature scheme of Liu et al., the second, named DKTUTS-CLSC-TKEM, is based on the direct key transport using a timestamp (DKTUTS) protocol first described by Zheng. In order to achieve greater efficiency both schemes are instantiated on elliptic curves without making use of pairings and are therefore good candidates for deployment on resource constrained devices.