원문정보
초록
영어
In this paper, we improve an efficient and complete remote user authentication scheme and propose an adaptive timestamp-nonce based authentication scheme using portable storage devices. Compared with other smart card-based, timestamp-based and nonce-based schemes, our scheme achieves more functionality. The new importance merits are: An adaptive timestamp-nonce structure is proposed; portable device stores authentication data not only smart card; all transactions through non-secure channel, especially in the registration phase, and batch of portable storage devices is issued. Besides, the basic merits include a dictionary of verification tables is not required to authenticate users, users can choose their password freely, mutual authentication is provided between a user and the re- mote system, the communication cost and the computational cost are very low, a user can update their password after the registration phase, a session key agreed by a user and the remote system is generated in every session and the serious time synchronization problem are solved.
목차
1 Introduction
2 Our scheme
2.1 Registration phase
2.2 Login phase
2.3 Veri cation phase
2.4 Session phase
2.5 Updated password phase
2.6 Batch of storage devices is issued
3 Security analysis
3.1 Impersonate attack
3.2 Replay attack
3.3 Eavesdropping attack
3.4 Stolen veri er attack
3.5 Denial of Service attack
3.6 Man-in-the-middle attack
4 Eciency
5 Conclusion
References