by Yuen Ching Wah.Thesis (M.Phil.)--Chinese University of Hong Kong, 1998.Includes bibliographical references (leaves 61-[63]).Abstract also in Chinese.Chapter 1 --- Introduction --- p.1Chapter 1.1 --- Why use cryptography? --- p.1Chapter 1.2 --- Why is authentication important ? --- p.2Chapter 1.3 --- What is the relationship between authentication and digital sig- nature? --- p.3Chapter 1.4 --- Why is random number important? --- p.3Chapter 2 --- Background --- p.5Chapter 2.1 --- Cryptography --- p.5Chapter 2.1.1 --- Symmetric key cryptography --- p.5Chapter 2.1.2 --- Asymmetric key cryptography --- p.7Chapter 2.1.3 --- Authentication --- p.8Chapter 2.2 --- Elliptic curve cryptography --- p.9Chapter 2.2.1 --- Mathematical backg...