On the Fly Authentication Scheme Based on Self-Certified Public-Key for 3G Mobile Communication Systems
Yu Zheng · Chinese Journal of Computers · 2005
In 3G mobile communication systems it is likely that public-key based authentication protocols will be employed for their intrinsic advantages over symmetric key protocols. In this paper, an efficient self-certified public-key based authentication scheme including PKBP (Public-Key Broadcast Protocol) and SPAKA (Self-certified Public-key based Authentication and Key Agreement Protocol) is presented for 3G systems. With the help of PKBP, Mobile Equipment (ME) can identify the genuine Base Station (BS) from the malicious ones without verifying the VLR’s (Visit Location Register) public-key certificate before authentication. While in SPAKA, without delivering its public-key certificate to VLR, ME can enforce mutual authentication with VLR. What’s more, in the scheme the conversation launched by ME can be monitored in a controllable and legitimate way by government at required occasions. Thus compare with other public-key based authentication protocols, with the expected security that symmetric key based protocols can’t provide, the computational and communicational payloads have been greatly reduced in our scheme. According to the analyses on performance and security of our scheme, SPAKA associated with PKBP is convenient to support globe mobility with low computational loads and secure communication.