1. Network Security Lecture 2 2. Security goals 3. Attacks 4. Security Services 5. Model for Network Security 6. Cryptogrphy Symmetric Encryption and Message Confidentiality.…

Slide 1 Overview of Cryptography and Network Security Ch. Rupa VRSEC Key Security Concepts These three concepts form what is often referred to as the CIA triad (Figure 1.1).…

Cryptography and Network Security Definitions Computer Security - generic name for the collection of tools designed to protect data and to thwart hackers Network Security…

Computer and Network Security Rabie A. Ramadan Lecture 2 Table of Contents * Grading Security Services and Mechanisms Symmetric Cipher Model Substitution techniques Transposition…

Computer and Network Security Rabie A. Ramadan Lecture 2 Table of Contents * Grading Security Services and Mechanisms Symmetric Cipher Model Substitution techniques Transposition…