Performance analysis of point multiplication algorithms in ECDH for an end-to-end VoIP network

Voice over Internet Protocol (VoIP) has accomplished enormous growth in recent years due to its low cost and flexible service enhancement. Session Initiation Protocol (SIP) is a communication protocol for signaling and managing the media streams (voice, video and audio) over IP based network. The well-known contribution in securing a VoIP voice packet is Advanced Encryption Standard (AES) with a secret key negotiation over Elliptic Curve Diffie Hellman (ECDH). In this paper, we evaluate the performance of scalar multiplication algorithms (binary, NAF, MoF) in order to estimate signaling response and call setup time over ECDH based VoIP protection. Finally, experimental results show that an appropriate selection of scalar multiplication algorithms helps to increase the trustworthiness between service provider and user in-terms of call setup delay.