Integrating identity-based cryptography in IMS service authentication

TL;DR

This paper proposes an innovative IMS service authentication scheme utilizing Identity-Based Cryptography to enhance security and performance, especially during simultaneous authentication requests, with security analysis and cryptographic performance evaluation.

Contribution

Introduces a novel IMS authentication scheme based on Identity-Based Cryptography, improving efficiency and security over existing methods like GBA and AKA-MD5.

Findings

Enhanced authentication performance with batch verification

Security analysis confirms protocol robustness

Cryptographic operations are more efficient

Abstract

Nowadays, the IP Multimedia Subsystem (IMS) is a promising research field. Many ongoing works related to the security and the performances of its employment are presented to the research community. Although, the security and data privacy aspects are very important in the IMS global objectives, they observe little attention so far. Secure access to multimedia services is based on SIP and HTTP digest on top of IMS architecture. The standard deploys AKA-MD5 for the terminal authentication. The third Generation Partnership Project (3GPP) provided Generic Bootstrapping Architecture (GBA) to authenticate the subscriber before accessing multimedia services over HTTP. In this paper, we propose a new IMS Service Authentication scheme using Identity Based cryptography (IBC). This new scheme will lead to better performances when there are simultaneous authentication requests using Identity-based Batch Verification. We analyzed the security of our new protocol and we presented a performance evaluation of its cryptographic operations