本中心於8/18發表研究成果於The 8th International Conference on Material Engineering and Application (ICMEA2023)國際會議。論文主題為Cryptanalysis of A Robust Authentication Protocol for Multi-server Architecture Using Elliptic Curve Cryptography。
The user authentication scheme of the multi-server architecture is mainly that the user only needs to register once to access many distributed servers. This architecture solves the problem of repeated multiple registrations in many servers and can provide a scalable solution. Recently, Zhang et al. proposed a secure robust remote user authentication scheme for multi-servers using elliptic curve cryptography. However, their proposed scheme can solve many severe flaws and authenticate messages while keeping users anonymous. However, we will show that their scheme couldn't withstand an online password-guessing with a user's smart card attack and a denial of service attack. This article proposes improving user authentication protocol against these vulnerabilities in Zhang et al.'s protocol.
