TY BSc-IT NS Unit 1 Lecture 4: Mastering Cryptography Techniques – Substitution, Transposition & Caesar Cipher 🔐

The point discussed in this lecture:-

1. CRYPTOGRAPHY TECHNIQUES
1.1. Cryptography
1.2. Cryptanalysis
1.3. Cryptology

2. Basic Concepts ( terminology)

3. PLAIN TEXT AND CIPHER TEXT
3.1. Substitution Techniques
3.2. Transposition Technique

4. Techniques for transforming plain text to cipher text

5. Cipher
5.1. Classical Ciphers
5.1.1. Substitution Cipher
1- Monoalphabetic Cipher
2- Polyalphabetic Cipher
3- Polygram Cipher.
4- Homophonic Cipher.
5.1.2. Transposition Cipher

6. Ceasar Cipher

Download notes from here:-
https://drive.google.com/open?id=0B_0qcYrYEFTBTWN2U3V3NGNhbGc

All other material by me @ this link:-
https://drive.google.com/open?id=0B_0qcYrYEFTBWjVtbS0ydjJ1REU