Integrating identity-based cryptography in IMS service authentication

Mohamed Abid (1) , Songbo Song (1, 2) , Hassnaa Moustafa (2) , Hossam Afifi (1, 3, 4)

1 TSP - RS2M - Département Réseaux et Services Multimédia Mobiles
2 Orange Labs [Issy les Moulineaux]
3 SAMOVAR - Services répartis, Architectures, MOdélisation, Validation, Administration des Réseaux
4 CNRS - Centre National de la Recherche Scientifique

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

Mots clés: IP multimedia subsystem (IMS); Identity based cryptography (IBC); Service authentication; Batch verification

Domaines: Cryptographie et sécurité [cs.CR]

Mohamed Abid, Songbo Song, Hassnaa Moustafa, Hossam Afifi. Integrating identity-based cryptography in IMS service authentication. International journal of network security & its applications, 2009, 1 (3), pp.1 - 13. ⟨hal-00424169⟩