This course introduces the principles and practice of cryptography and its use in network security. Topics include: nature and types of security attacks; key based cryptography, symmetric and asymmetric key; Cryptanalysis; Fiestel cipher structure; conventional encryption algorithms, DES and triple DES; Key distribution problem; Asymmetric cryptography: public key cryptography, message authentication, hash function, RSA and Diffie-Hellman algorithms; Model for network security; Digital signature, digital certificate; Quantum cryptography. Prospective students should possess a background in computer networks.

• CEN 430 + Lab : Data Communication and Computer Networks

• Understand the principles and practices of cryptographic techniques.
• Understand a variety of generic security threats and vulnerabilities, and identify and analyse particular security problems for a given application.
• Appreciate the application of security techniques and technologies in solving real-life security problems in practical systems.
• Design security protocols and methods to solve specified security problems.

1. Cryptography & Network Security by B. Forouzan
2. Cryptography & Network Security: Principles & Practice (5th Edition) by W. Stallings
3. Introduction to Modern Cryptography: Principles & Protocols by J. Katz, Y.Lindell

Biweekly Quiz, One Midterm Exam, One Final Exam, Project