Information and Communications Security First International Conference, ICIS'97, Beijing, China, November 11-14, 1997, Proceedings - Han, Yongfei; Han, Yongfei; Okamoto, Tatsuaki; Okamoto, Tatsuaki; Quing, Sihan; Quing, Sihan (Springer Berlin Heidelberg : Imprint: Springer, 1997)