# Cryptography and System Security

Cryptography Examples

What you will learn

### Public Key Cryptosystem: RSA Algorithm and its examples

Description

These courses is designed to bridge the gap between theoretical cryptography and its practical applications in securing digital communications.

In the RSA algorithm section, learners are introduced to the foundations of public key cryptography, exploring the RSA algorithmâ€™s key generation, encryption, and decryption processes. The course breaks down the complex mathematical concepts underlying RSA, such as prime number theory and modular arithmetic, and provides solved examples to illustrate how RSA secures data transmission.

The Diffie-Hellman segment delves into the mechanism of secure key exchange over an insecure channel, explaining the mathematical principles that enable this process. It offers practical examples of how Diffie-Hellman is implemented in cryptographic protocols, emphasizing the algorithmâ€™s significance in ensuring secure communications.

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Additionally, the course covers MitM attacks, where it elaborates on how attackers intercept communications between two parties to eavesdrop or manipulate messages. Through real-world examples, it showcases the techniques employed in MitM attacks and discusses prevention strategies, underscoring the importance of encryption and secure communication practices.

These courses combines theoretical knowledge with practical exercises, including solved examples, to equip students with the skills needed to navigate the complex landscape of cybersecurity and cryptography.

The content focusing on the RSA algorithm, Diffie-Hellman key exchange, and Man in the Middle (MitM) attacks

### Cryptography and Different Types of Ciphers with example

Cryptography and its categories
Different types of ciphers â€“ Substitution Cipher
Caesar Cipher and Generalized Caesar Cipher
Caesar Cipher Example 2
Affine Cipher
Playfair Cipher
Playfair Cipher Example
Vigenere Cipher: Vigenere Table Method
Vigenere Cipher: Keyword Method
Transposition Cipher: Keyless Transposition Cipher
Transposition Cipher: Keyed Transposition Cipher

### Symmetric and Asymmetric Key Cryptography

Key Distribution Center (KDC)
Diffie Hellman Key Exchange Algorithm
Diffie Hellman Example
RSA Algorithm-Steps
RSA Example1
RSA Example 2
RSA Example 3
Man in the Middle Attack Example