Elliptic Curve Cryptography-Based Signcryption Scheme with a Strong Designated Verifier for the Internet of Things

Abstract

The Internet of Things (IoT) is an emerging technology that grows across the World Wide Web. It has scenarios in which the real-world object is transferring data over an insecure wireless network. The security in IoT became more challenging because of the low computational and communication capacity of the object. The proposed signcryption scheme is a combination of a digital signature and symmetric key encryption in a single logical unit, which reduces the computational complexity as compared to the traditional signature, then encryption process along with the digital signature of the sender can only verify by the designated verifier. The computational and communication overhead of the elliptic curve cryptography (ECC) scheme have less because of short key length with the same security level as compared to other public key cryptosystem. The security hardness of the scheme is based elliptic curve discrete logarithm (ECDLP) and also provided various security requirements. The proposed scheme has low computational and communication overhead with low-power efficiency for IoT scenarios.