Udacity

Applied Cryptography (Udacity)

Offered by Udacity,
Applied Cryptography (Udacity)

Science of Secrets. Cryptography is present in everyday life, from paying with a credit card to using the telephone. Learn all about making and breaking puzzles in computing.

Class Deals by MOOC List - Click here and see Udacity's Active Discounts, Deals, and Promo Codes.

Explore how secrets are written and shared, as well as what can go wrong when cryptography is misused or implemented badly.

What You Will Learn

Lesson 1
Perfect Ciphers

  • What makes certain ciphers perfect.
  • How the Lorenz Cipher was broken.

Lesson 2
Symmetric Encryption

  • Sending messages when two people share a secret.

Lesson 3
Key Exchange

  • Techniques to establish a shared secret.

Lesson 4
Asymmetric Encryption

  • Exchanging information using public key cryptosystems.

Lesson 5
Public Key Protocols

  • Encrypted key exchange
  • certificates
  • secure commerce.

Lesson 6
Using Cryptographic Primitives

  • How cryptography can be useful for anonymizing communication
  • voting
  • and digital cash.

Lesson 7
Secure Computation

  • Computing without exposing data.

Prerequisites and Requirements
This course assumes previous programming experience, comparable to what is covered by the Udacity CS101 course, as well as some understanding of probability and theory of computation and algorithm analysis.

Go to Class
MOOC List is learner-supported. When you buy through links on our site, we may earn an affiliate commission.

Related Courses

Secure and Private AI (Udacity) Udacity
Udacity,Facebook

Secure and Private AI (Udacity)

Data Science

Learn how to extend PyTorch with the tools necessary to train AI models that preserve user privacy. This free course will introduce you to three cutting-edge technologies for privacy-preserving AI: Federated Learning, Differential Privacy, and Encrypted Computation. You will learn how to use the newest privacy-preserving technologies, such as OpenMined's PySyft. PySyft extends Deep Learning tools—such as PyTorch—with the cryptographic and distributed technologies necessary to safely and securely train AI models on distributed private data.

Self Paced
Self-Paced
Cryptography Artificial Intelligence Security
Details
Introduction to Cyber Security (FutureLearn) FutureLearn
The Open University

Introduction to Cyber Security (FutureLearn)

Security & Networking

Discover essential cyber security knowledge and skills, and learn how you can better protect your digital life. Explore the world of cyber security and develop the skills needed to stay safe. Modern life depends on online services, so having a better understanding of cyber security threats is vital. On this course, guided by Cory Doctorow, you’ll learn how to recognise online security threats that could harm you and explore the steps you can take to minimise your risk.

Self Paced
5-12 Weeks
Cryptography Security Information Security
Details
Basic Cryptography and Programming with Crypto API (Coursera) Coursera
University of Colorado System

Basic Cryptography and Programming with Crypto API (Coursera)

Security & Networking

In this MOOC, we will learn the basic concepts and principles of crytography, apply basic cryptoanalysis to decrypt messages encrypted with mono-alphabetic substitution cipher, and discuss the strongest encryption technique of the one-time-pad and related quantum key distribution systems. We will also learn the efficient symmetric key cryptography algorithms for encrypting data, discuss the DES and AES standards, study the criteria for selecting AES standard, present the block cipher operating modes and discuss how they can prevent and detect the block swapping attacks, and examine how to defend against replay attacks.

Jul 20th 2026
4 Weeks
Programming Cryptography Network Security
Details
Cloud Security on AWS (Coursera) Coursera
Edureka

Cloud Security on AWS (Coursera)

Security & Networking

Welcome to the Cloud Security on AWS course, where you'll embark on a journey to acquire practical expertise in building a robust understanding of cloud security fundamentals, AWS security services, advanced threat detection, secure network design, data protection, encryption techniques, and incident response planning while ensuring compliance with AWS standards and governance best practices.

Jul 27th 2026
1 Week
Encryption Network Security Cloud Security
Details
Cybersecurity Fundamentals (edX) EdX
Rochester Institute of Technology,RITx

Cybersecurity Fundamentals (edX)

Security & Networking

Learn cybersecurity fundamentals, including how to detect threats, protect systems and networks, and anticipate potential cyber attacks. In this introduction to the field of computing security, you will be given an extensive overview of the various branches of computing security. You will learn cybersecurity concepts, issues, and tools that are critical in solving problems in the computing security domain.

Aug 17th 2026
5-12 Weeks
Cryptography Security Networks
Details
Intro to Information Security (Udacity) Udacity
Georgia Institute of Technology,Udacity

Intro to Information Security (Udacity)

Security & Networking

Offered at Georgia Tech as CS 6035. This course provides a one-semester overview of information security. It is designed to help students with prior computer and programming knowledge — both undergraduate and graduate — understand this important priority in society today. The technical content of the course gives a broad overview of essential concepts and methods for providing and evaluating security in information processing systems (operating systems and applications, networks, protocols, and so on).

Self Paced
Self-Paced
Cryptography Security Networks
Details
An Introduction to Cryptography (FutureLearn) FutureLearn
Coventry University,Institute of Coding

An Introduction to Cryptography (FutureLearn)

Sci: Mathematics Science

Explore how code breakers and spies influenced cryptography and investigate the role it plays in modern secure communication. Investigate the security of encrypted data. Is it possible to prove the security of encrypted data? Will every algorithm fail given sufficient time or computing power? On this course you will get an introduction to cryptography and cryptanalysis. From ancient examples of secret messages and the spies that cracked them to modern cryptographic applications, you will have the opportunity to explore the foundations of data security.

Self Paced
2 Weeks
Cryptography Security Data Encryption
Details
Introduction to IT Security (Coursera) Coursera
Akamai Technologies, Inc.

Introduction to IT Security (Coursera)

Security & Networking

Students will learn about the security management process. They will examine risk and risk management, including quantitative and qualitative risk assessments. The course includes discussion of security control types and physical security controls. Students will explore all aspects of Identity and Access Management (IAM) including single-factor and multi-factor authentication, account and access control, single sign-on and federation.

Jul 27th 2026
4 Weeks
Security Encryption Risk Management
Details
Mathematical Foundations for Cryptography (Coursera) Coursera
University of Colorado System

Mathematical Foundations for Cryptography (Coursera)

Security & Networking

Welcome to Course 2 of Introduction to Applied Cryptography. In this course, you will be introduced to basic mathematical principles and functions that form the foundation for cryptographic and cryptanalysis methods. These principles and functions will be helpful in understanding symmetric and asymmetric cryptographic methods examined in Course 3 and Course 4. These topics should prove especially useful to you if you are new to cybersecurity. It is recommended that you have a basic knowledge of computer science and basic math skills such as algebra and probability.

Jul 20th 2026
4 Weeks
Math Cryptography Security
Details
An Introduction to Logic for Computer Science (Coursera) Coursera
University of Leeds

An Introduction to Logic for Computer Science (Coursera)

Computer Science

Logic plays a fundamental role in computer science. This course is designed to equip you with a solid understanding of the fundamental principles of logic and their relevance in the field of computer science. In this course, you'll explore proposition logic and discover its practical applications in problem-solving, algorithm design, and the development of intelligent systems. By engaging in hands-on exercises, exploring real-world examples, and participating in discussions, you'll develop strong logical reasoning and critical thinking skills.

Jul 27th 2026
2 Weeks
Cryptography Logic Computer Science
Details