• Definitions • Passwords – Unix Passwords – One time passwords • Challenge-response techniques – Basic protocol constructions – Also “one-time” • Authentication Involving TTP – Needham-Schroeder – Kerberos

• Definitions • Passwords – Unix Passwords – One time passwords • Challenge-response techniques

• What is “Information Security” • A brief history of Info sec • Threats、Attacks and Defenses

• Symmetric Cryptography • Asymmetric Cryptography

• Principles of Public-Key Cryptosystems • The RSA Algorithm

复旦大学：《信息安全》教学课件_03 Modern Block Ciphers

复旦大学：《信息安全》教学课件_02 Classical Encryption Techniques（cont.）

复旦大学：《信息安全》教学课件_01 Classical Encryption Techniques

演示演讲PPT成功案例：旅游安全讲习

演示演讲PPT成功案例：构造积极防御的安全保障框架