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Introduction to Cryptography

This course defines the basic vocabulary and concepts of cryptography.

4 videos  //  26 minutes of training

Course description

Before diving into the details of how cryptography can be used and attacked in applications, it’s important to start out with the basics. This course defines some of the fundamental vocabulary of cryptography and discusses the most important guiding principles used when designing and implementing cryptosystems.

Course syllabus

Course IntroductionDuration: 1:32

This video introduces the Introduction to Cryptography course.

Introduction to CryptographyDuration: 5:53

This video defines key vocabulary for discussing cryptography.

Classifying CryptosystemsDuration: 8:26

This video describes common classifications of cryptosystems.

Principles of CryptographyDuration: 9:41

This video describes the principles used to define a secure cipher.

Meet the author

Howard Poston


Howard Poston is a cybersecurity researcher with a background in blockchain, cryptography and malware analysis. He has a master's degree in Cyber Operations from the Air Force Institute of Technology and two years of experience in cybersecurity research and development at Sandia National Labs.

He currently works as a freelance consultant providing training and content creation for cyber and blockchain security. He can be reached by email at or via his website at

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Plans and pricing





$599 / license

Annually. Includes all content plus team admin and reporting.