A To Z Of Cryptography

Practical Hands-on with Python Programming

What you'll learn

Concept of Network Security, Services and Mechanisms

Malware

Symmetric Key Cryptographic techniques

Asymmetric Key Cryptographic Techniques

Hands on with Python Programming for several cryptographic algorithms

Requirements

Basic knowledge of computer networks

Programming experience of Python

Basic knowledge of mathematics

Description

This a detailed course on Cryptography, which is a way to secure important information and communication through codes. These codes are only available to the rightful owner and hence it can be used to combat attacks, and protect your data from hackers. Every organization, regardless of size, industry or infrastructure, requires a degree of network security solutions in place to protect it from the ever-growing landscape of cyber threats in the wild today. Network security is a comprehensive aspect that shelters a multitude of technologies, devices and processes involved in computer networks. With the advent of Internet and world wide web our interconnected computers are prone to threats and attacks through the system vulnerabilities and this in turn can hamper the activities of an organization or even an individual. In its simplest term, network security comprises a set of rules and configurations designed to protect the confidentiality, integrity and availability of computer networks and data using both software and hardware technologies. There are several reasons to learn network security and cryptography.In our everyday lives, cryptography is used extensively and is ubiquitous. Say for example, we may use it to securely shoot passwords over massive networks for online shopping. It is used in financial transaction in banks where Bank servers and e-mail clients save your passwords using cryptography. Cryptography is used to secure all transmitted information in our IoT-connected world, to authenticate people and devices, and devices to other devices.In this course I will take you through a tour of various cryptographic techniques.There are basically 2 types of cryptographic systems. Symmetric key cryptosystem and asymmetric key cryptosystem. In symmetric key cryptosystem there is a single key used for encryption as well as decryption. In asymmetric key cryptosystem, there is a pair of keys- one used for encryption and the other for decryption. Encryption is the process of converting the plaintext or original message to ciphertext or coded message whereas decryption converts the ciphertext back to plaintext. So, encryption is used at the sender side whereas decryption is used at the receiver side. Towards the end of the course some complex research related cryptographic topics have been discussed that will be beneficial to the researchers and advanced learners.

Overview

Section 1: Introduction to Network Security

Lecture 1 About the Section on Introduction to Network Security

Lecture 2 1.1 Introduction

Lecture 3 1.2 Network Attacks

Lecture 4 1.3 Network Security Services

Lecture 5 1.4 Malware Types Part 1

Lecture 6 1.5 Malware Types Part 2

Lecture 7 1.6 Malware Spread

Lecture 8 1.7 Malware Protection

Lecture 9 1.1 Hands-on Malware Analysis

Section 2: Cryptography Part 1

Lecture 10 Overview of Section 2

Lecture 11 2.1 Classical Cryptosystem

Lecture 12 2.1 Hands-on with Python-Caesar Cipher, Reverse Cipher, Caesar Hacker, ROT13

Lecture 13 2.2 Playfair Cipher

Lecture 14 2.2 Hands-on with Python-Playfair Cipher

Lecture 15 2.3 Single Round Function

Lecture 16 2.4 Data Encryption Standard (DES)

Lecture 17 2.3 Hands-on with Python-DES

Lecture 18 2.5 Substitution Cipher-Hill Cipher

Lecture 19 2.4 Hands-on with Python-Hill Cipher

Lecture 20 2.6 Substitution Cipher-Vigenere Cipher

Lecture 21 2.5 Hands-on with Python-Vigenere Cipher

Lecture 22 2.7 Transposition Cipher-Rail Fence

Lecture 23 2.8 Transposition Cipher-Advanced Rail Fence

Lecture 24 2.6 Hands-on with Python-Rail Fence

Section 3: Cryptography Part 2

Lecture 25 Overview of Section 3

Lecture 26 3.1 IDEA

Lecture 27 3.2 RC5

Lecture 28 3.3 MAC

Lecture 29 3.4 Hash Basics

Lecture 30 3.5 Hash Design

Lecture 31 3.6 Hash Applications

Lecture 32 3.2 Hands-on with Python-SHA

Lecture 33 3.7 MD5 Steps

Lecture 34 3.8 MD5 Architecture

Lecture 35 3.9 MD5 Implementation Steps

Lecture 36 3.3 Hands-on with Python-MD5

Lecture 37 3.10 Public Key Cryptosystem - RSA

Lecture 38 3.4 Hands-on with Python - RSA

Lecture 39 3.11 Diffie Hellman

Lecture 40 3.12 Primitive Roots

Lecture 41 3.5 Hands-on Diffie Hellman

Section 4: Advanced Research Topics on Cryptography

Lecture 42 Overview of Section 4

Lecture 43 4.1 AES

Lecture 44 4.1 Hands-on with Python-AES

Lecture 45 4.2 RC4

Lecture 46 4.2 Hands-on with Python-RC4

Lecture 47 4.3 Blowfish Algorithm

Lecture 48 4.4 Quantum Cryptography

Lecture 49 4.5 One Time Password (OTP)

Lecture 50 4.6 Birthday Attack

Lecture 51 4.7 DNA Cryptography

Lecture 52 4.8 Image Steganography in Cryptography

Anybody interested in the area of network security and cryptography, especially students of undergraduate and postgraduate courses of computer science as well as research scholars