Скачать или смотреть Number Theory Unit-6 Lesson-2: Solved Questions on Caesar Cipher (Application to Cryptography)

Welcome to Unit-6, Lesson-2 of Number Theory, where Dr. Udar presents a set of solved examples on the Caesar Cipher, connecting the power of modular arithmetic with the principles of cryptography.

In this lecture, you’ll learn how to encrypt and decrypt messages using the Caesar Cipher, how to represent letters mathematically, and how the key shift and modulo operations work together to secure communication. Each question is solved step-by-step to show how number theory concepts like modular addition and congruences are directly applied in real-world cryptographic systems.

📘 In This Lecture, You Will Learn:

Practical examples of Caesar Cipher encryption and decryption

How to convert alphabets into numerical codes

Using modular arithmetic to perform key shifts

Real-life connection between number theory and coding

Strengths and weaknesses of classical cipher systems

This session is ideal for students preparing for GATE, CSIR-NET, IIT JAM, Cybersecurity, and Cryptography-related courses, as well as for anyone interested in exploring the mathematical foundation of encryption systems.

🎯 Course: Number Theory (Mathematics Major / CSIR-NET / JAM / Engineering Math)
👨‍🏫 Instructor: Dr. Udar | Simplify Math, Amplify Life