Introduction and Classical Ciphers
1.4. Security: Computer Security, Information Security, Network Security, CIA Triad, Cryptography, Cryptosystem, Cryptanalysis, Security Threats and Attacks, Security Service. . .
1.4. Security: Computer Security, Information Security, Network Security, CIA Triad, Cryptography, Cryptosystem, Cryptanalysis, Security Threats and Attacks, Security Services, Security Mechanisms
1.5. Classical Cryptosystems: Substitution Techniques: Ceasar, Monoalphabetic, Playfair, Hill, Polyalphabetic ciphers, One-time pad Transposition Techniques: Rail Fence Cipher
1.6. Modern Ciphers: Block vs. Stream Ciphers, Symmetric vs. Asymmetric Ciphers