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Cryptography and System Security – Free Udemy Course

🌐 English⭐ 4.5👥 49 students

$19.99Free

Cryptography and System Security

Name: Cryptography and System Security
Availability: InStock
Rating: 4.5 (49 reviews)

Course Overview

CategoryFinance

Duration1.5

InstructorTeaching & Academics

LanguageEnglish

Rating4.5 / 5

PriceFree (was $19.99)

What You'll Learn

Security and its types
CIA Triads (Security Goals)
Security Threats (Threats related to Confidentiality, Integrity and Availability)
Security services and mechanism

About This Free Course

In this course you will learn about cryptography and system security concepts.

This course provides an in-depth exploration of system security goals and concepts, focusing on confidentiality, integrity, availability, and related principles such as free mastering authentication in nodejs jwt sso token based course and non-repudiation. It delves into classical and modern encryption techniques, including symmetric and asymmetric algorithms, and the application of these methods to solve problems related to data confidentiality and authentication. The course covers hashing algorithms for data integrity and the analysis of digital signature schemes to ensure secure communication. Students will also learn to design secure applications, analyze network vulnerabilities, and evaluate various attacks. The course includes an evaluation of firewalls and key security protocols such as SSL/TLS, IPSec, and PGP, preparing students to effectively implement and assess security measures in real-world scenarios.

Chapter 1 : Introduction and Basics of Cryptography

Security and its types

CIA Triads (Security Goals)

Security Threats (Threats related to Confidentiality, Integrity and Availability)

Security services and mechanism

Chapter 2 : Cryptography and Different Types of Ciphers with example

What is Cryptography and its terminology

Classical Encryption Techniques: Symmetric and Asymmetric Encryption Techniques

Cryptography and its categories

Different types of ciphers - 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

Chapter 3 : Public Key Cryptography

Key Distribution Center (KDC)

Diffie Hellman Key Exchange Algorithm

Diffie Hellman Example

RSA Algorithm - Steps

RSA Example 1

RSA Example 2

RSA Example 3

Man in the Middle Attack Example

Chapter 4 : Hash Function, MAC, CMAC and HMAC

What is hash function?

Properties of hash function

Message Authentication Code (MAC)

Nested MAC

CMAC

HMAC

Chapter 5 : Digital Certificate

Digital Certificate

X.509 Digital Certificate Format

Chapter 6 : Authentication

Authentication and Authorization

Multi-factor Authentication

Chapter 7 : TCP/IP Vulnerabilities

TCP/IP Vulnerabilities

Packet Sniffing

ARP spoofing

DNS Spoofing

Port Scanning

IP spoofing

TCP Syn Flood

Chapter 8 : Internet Security Protocols

Introduction

SSL

SSL Protocol Stack

TLS

IPSec

IPSec Modes of Operations: Transport and Tunnel Mode

IP Sec Protocols : AH and ESP

Chapter 9 : Firewall

What is Firewall and its types

Packet Filters Firewall

Circuit Level Gateway Firewall

Application Level Firewall

Stateful Multilayer Firewall

Chapter 10 : Intrusion Detection System (IDS)

What is Intrusion and its types

IDS and its types

Host based IDS

Network based IDS

Hybrid IDS

Signature based IDS

Anomaly based IDS

Thanks for joining my course, let's get started!

Who Should Take This Course

"Cryptography and System Security" is aimed at people who want a practical, structured introduction to finance without paying full price for it. It's a solid fit if you're starting out in finance and want a guided course rather than piecing tutorials together yourself, if you've tried free YouTube content on the topic and want something more organized in around 1.5, or if you already work in a related area and want a refresher you can finish at your own pace. Since enrollment happens on Udemy itself, you keep full access to view the lectures, download any provided resources, and revisit the material later — this isn't a stripped-down or time-limited version of the course.

Why This Course Is Worth Taking

Our take: this listing earns a spot on FreeWebCart because the coupon we verified actually brings the price to $0, not just a token discount, and the course carries a 4.5/5 rating on Udemy from 49+ students who've already enrolled. That combination — real reviews plus a working 100% OFF code — is what we look for before publishing a finance course. It won't replace hands-on experience or a full degree program, but as a low-risk way to test whether finance is worth pursuing further, or to pick up one specific skill, the free price tag makes it an easy yes while the coupon lasts.

Pros & Cons

👍 Pros

100% free to enroll via this coupon (normally $19.99)
Lifetime access on Udemy once enrolled, even after the coupon expires
Rated 4.5/5 by past students on Udemy
Self-paced — no fixed schedule or live sessions to attend

👎 Cons

Coupon is time-limited and can expire before you enroll
No live instructor support — questions go through Udemy's Q&A, not us
Certificate is a Udemy completion certificate, not an accredited qualification

Frequently Asked Questions

Is "Cryptography and System Security" really free?

Yes — we verified a 100% OFF Udemy coupon for this finance course before publishing it. Enroll directly on Udemy using the button below; no credit card is needed while the coupon is active.

How long will this coupon last?

Udemy coupons typically last 1–3 days or expire after roughly 1,000 enrollments, whichever comes first. If the price on Udemy no longer shows $0 when you click through, the coupon has expired since we last checked it.

Do I keep access after the coupon expires?

Yes. Once you enroll while the coupon is live, "Cryptography and System Security" is yours to keep on Udemy — including any future updates the instructor makes — even after the coupon runs out.

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