\input zb-basic \input zb-ioport \iteman{io-port 05477547} \itemau{Wu, Tzong-Chen} \itemti{Remote login authentication scheme based on a geometric approach.} \itemso{Comput. Commun. 18, No. 12, 959-963 (1995).} \itemab Summary: A smart card-oriented remote login authentication scheme is presented. The proposed scheme can be divided into three phases: registration, login, and authentication. Based on some simple properties of Euclidean geometry, the login and authentication phases can be achieved easily. Impersonation and replay attacks on the proposed scheme are discussed. \itemrv{~} \itemcc{C.2.2 C.4 K.6.5} \itemut{computer-communication network; remote login; password authentication; one-way function; time stamp; smart card; Euclidean geometry} \itemli{doi:10.1016/0140-3664(96)81595-7} \end