A new authentication mechanism and key agreement protocol for SIP using identity-based cryptography

Ring, Jared W. and Cho, Kim-Kwang R. and Foo, Ernest and Looi, Mark H. (2006) A new authentication mechanism and key agreement protocol for SIP using identity-based cryptography. In Clark, Andrew and McPherson, Mark and Mohay, George, Eds. Proceedings AusCERT Asia Pacific Information Technology Security Conference 2006, Gold Coast, Australia.

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Abstract

The Session Initiation Protocol (SIP) protocol is commonly used to establish Voice over IP (VoIP) calls. IETF SIP standards do not specify a secure authentication process thus allowing malicious parties to impersonate other parties or to charge calls to other parties. This paper proposes an extension to the SIP protocol that uses an identity-based authentication mechanism and key agreement protocol. These extensions provide stronger cryptographic assurances for VoIP authentication and enable provably secure key agreement between users. The use of ID based cryptography means that a large Public Key Infrastructure (PKI) is not required thus making this protocol viable for large scale implementation.

Item Type:	Conference Paper
Status:	Published
Keywords:	Session Initiation Protocol, Identity-based Authentication, Key Agreement Protocol
Subjects:	280000 Information, Computing and Communication Sciences
ID Code:	4422
Deposited By:	CHOO, KIM-KWANG RAYMOND
Deposited On:	19 July 2006
Alternative Locations:	http://conference.auscert.org.au/conf2006/
Copyright Owner:	Copyright 2006 (please consult author)