Public Key Cryptography Courses and Certifications

Cryptography Beginners Guide with openSSL

1745 ratings at Udemy

Learn and apply cryptography techniques using openSSL . from symmetric keys and Hash functions to certificates in HTTPS

• Udemy
• 1 hour 30 minutes
• On-Demand
• Paid Course

Cyber Attack Countermeasures

710 ratings at Coursera

Learn cyber defense fundamentals, authentication protocols, cryptography basics, and modern security techniques for robust protection against cyber threats.

• Coursera
• 19 hours 13 minutes
• On-Demand
• Paid Course

Classical Cryptosystems and Core Concepts

425 ratings at Coursera

Explore cryptography essentials: core concepts, classical systems, cryptanalysis, and hash functions. Gain practical skills for cybersecurity careers in this comprehensive introduction.

• Coursera
• 12 hours 15 minutes
• On-Demand
• Paid Course

An Introduction to Cryptography

16 ratings at Coursera

Explore cryptography's evolution from ancient ciphers to modern techniques, learning encryption, decryption, and protocols. Gain practical skills in secure communication for personal and organizational privacy.

• Coursera
• 8 hours
• On-Demand
• Paid Course

Discrete Math for Computer Science - Algorithms & Recursion

Master number theory, cryptography, and recursive algorithms while analyzing efficiency through mathematical induction and asymptotic notation.

• Coursera
• 13 hours 44 minutes
• On-Demand
• Paid Course

Cyber Security Fundamentals

132 ratings at Udemy

Explore cybersecurity essentials, from encryption to threat analysis. Learn to protect systems, networks, and data from cyber risks and unauthorized access in today's digital landscape.

• Udemy
• 2 hours 15 minutes
• On-Demand
• Paid Course

Infosec

Blockchain Security

86 ratings at Coursera

Explore blockchain security, cryptography, consensus algorithms, smart contracts, and advanced concepts. Learn to identify vulnerabilities and protect against common attacks in blockchain ecosystems.

• Coursera
• 8 hours 15 minutes
• On-Demand
• Paid Course

Mastering SSL (TLS), Keys and Certificates Management 2026

55 ratings at Udemy

Mastering SSL (TLS), Keys and Certificates Management: From Intro to Advanced

• Udemy
• 4 hours 54 minutes
• On-Demand
• Paid Course

NostrDevs: Build a Social Network from Scratch

48 ratings at Udemy

Master the Nostr Protocol! Construct resilient social networks using cryptographic keys, signatures, clients, relays

• Udemy
• 6 hours 16 minutes
• On-Demand
• Paid Course

Introduction to Blockchain for Global Commerce

40 ratings at Coursera

Explore blockchain's revolutionary impact on global commerce, learning key concepts, design principles, and implementation challenges to shape the future of digital transactions and trust.

• Coursera
• 1 day 9 hours 55 minutes
• On-Demand
• Paid Course

Blockchain Security - Foundational Concepts

13 ratings at Coursera

Explore blockchain security fundamentals, cryptography, consensus mechanisms, and advanced concepts. Gain skills to evaluate and design secure implementations for users, nodes, and transactions.

• Coursera
• 15 hours 37 minutes
• On-Demand
• Paid Course

Secure Software Development: Verification and More Specialized Topics

Learn how to verify software for security, and take a deeper dive into the basics of applying threat models and cryptography.

• edX
• 7 weeks, 1-2 hours a week
• On-Demand
• Free Online Course (Audit)

Blockchain and Cryptography Overview

Explore cryptography basics, blockchain fundamentals, consensus mechanisms, and smart contract security. Gain insights into hash functions, digital signatures, and blockchain security challenges.

• Coursera
• 7 hours 3 minutes
• On-Demand
• Paid Course

Bitcoin Security Foundations

Discover the cryptographic foundations securing Bitcoin through blockchain consensus, mining validation, and digital signatures with hands-on labs using Bitcoin Core and Python.

• Coursera
• 10 hours 18 minutes
• On-Demand
• Paid Course

Bitcoin Scripting Foundations

Master Bitcoin's scripting language and transaction logic through hands-on exercises, building the foundation for blockchain development and programmable money flows.

• Coursera
• 14 hours 45 minutes
• On-Demand
• Paid Course