This subject begins with an overview of the Open Systems Interconnection (OSI) architecture and security attacks on system services, and a discussion of different existing security mechanisms. The main focus includes cryptography, system security, network and web security. The students learn: (1) cryptographic algorithms and protocols, underlying network security applications including single-key and public-key encryption methods, hash functions, digital signatures and key exchange; (2) intrusion detection systems and firewalls that can be used to protect a computer system from security threats, such as intruders, viruses, and worm; (3) the use of cryptographic algorithms and security protocols for providing network and internet security in terms of user authentication/identification, IP security and Web security.
