Public Key Infrastructure (PKI) with OpenSSL (RSA and ECC) (Udemy.com)

Are you ready to truly understand how modern cryptography works and why it matters?

In this hands-on course, you’ll go beyond the buzzwords and dive into the foundations of cryptography, certificates, and certificate signing—all with practical OpenSSL examples. Whether you're a developer, security enthusiast, or IT professional, this course will give you the knowledge and tools to secure communication, understand public key cryptography, and work confidently with real-world cryptographic systems.

You won’t just learn the theory—you’ll implement it.

What You’ll Learn:

• The core purpose of cryptography and how it protects digital communication

• How RSA and Elliptic Curve Cryptography (ECC) work—both in theory and in practice

• How to generate public/private keys, create CSRs, and sign certificates using OpenSSL

• The structure of certificate chains, including root and intermediate CAs

• How TLS works, and how certificates are used in secure network protocols

Course Outline:

Chapter 1 – Cryptography Fundamentals

• Why cryptography is essential

• Public vs. private key cryptosystems

Chapter 2 – Public and Private Keys in OpenSSL

• Generating RSA and ECC keys

• Encrypting data with RSA

Chapter 3 – Certificates

• Self-signed and intermediate certificates

• Configuring certificate parameters

Chapter 4 – Certificate Signing Requests (CSRs)

• What CSRs are and how to create them

• Signing and verifying certificate chains

Chapter 5 – Transport Layer Security (TLS)

• How TLS ensures secure communication

• CRLs and certificate management in networks

Chapter 6 – RSA Algorithm Deep Dive

• The math behind RSA

• Can RSA be cracked?

Chapter 7 – Elliptic Curve Cryptography (ECC)

• ECC theory and practical algorithms

• Digital signatures and real-world use cases (like Bitcoin)

• Strengths and potential vulnerabilities of ECC

By the end of this course, you’ll not only understand cryptography—you’ll be able to use it confidently in real-world scenarios.

Take the next step. Enroll now and gain the skills to work with modern cryptographic systems using OpenSSL!