earticle

영어

To provide unlinkability for wireless sensor network, Jiang et al. proposed an efficient two factor user authentication scheme. The scheme provides some good aspects for wireless sensor network. However, this paper shows that Jiang et al.’s scheme has some security weaknesses and proposes an enhanced scheme to remove the weaknesses in Jiang et al.’s scheme. The proposed scheme does not use verification table and synchronized values between communication parties. It provides user anonymity and un-traceability by adopting dynamic identifier depending on each session dependent random number and time stamps. Comparing with the other authentication schemes, the proposed scheme is more secure while maintaining efficiency.