• Cryptography Basics Video — 00:17:16
    • In this episode, Mike goes over the goals and methods used in cryptography.

  • Public Key Infrastructure Video — 00:20:53
    • In this episode, Mike discusses public key infrastructure (PKI), used to enable commerce and other secure activities over the Internet.

  • Steganography Video — 00:05:43
    • In this episode, Mike illustrates that information can be hidden within other data.

  • Hashing Video — 00:07:20
    • In this episode, Mike shows how a hash provides integrity to data.

  • Diffie-Hellman Video — 00:06:47
    • In this episode, learn the Diffie-Hellman key exchange agreement and methods as Mike conceptualizes this very complex algorithm.

  • Symmetric Block Modes Video — 00:07:51
    • In this episode, Mike talks about the usage and benefits of block modes when used in symmetric encryption.

  • Cryptographic Methods Video — 00:07:29
    • In this episode, Mike shares various methods used in cryptography, and the various methods used to protect the keys.

  • Cryptographic Attacks Video — 00:24:18
    • In this episode, Mike explains how encrypted information is at risk and explores ways to protect it.

  • Certificates and Trust Video — 00:14:20
    • In this episode, Mike explains certificates and how they are used to establish trust.

  • HMAC Video — 00:03:51
    • In this episode, Mike explains how hashing can improve message security.

  • PGP/GPG Video — 00:09:50
    • In this episode, Mike works though the ups and downs of the PGP/GPG encryption methods.

  • RSA Cryptosystems Video — 00:10:23
    • In this episode, Mike describes encrypting and decrypting data with different keys.

  • Symmetric Cryptosystems Video — 00:11:49
    • In this episode, Mike describes encrypting and decrypting data with the same key.


Course description

This course introduces the fundamental concepts of cryptography. It covers the key terminology and common use cases for cryptography. The course also explains symmetric cryptosystems, provides an overview of common hashing algorithms and common implementation concerns.

You're in good company


We use Infosec Skills to provide continuous training to our technicians and to prepare them for various certifications. Infosec Skills allows us to create personalized training programs that focus on each of our technicians’ particular roles and see their progress as they take courses. We also, recommend it to clients to make their IT support teams better.

Caleb Yankus


This has been utilized to bridge the skills gap across our cyber team and to aid them as they prepare for their various certifications. It also has provided a nice learning foundation for our various cyber team members to utilize as we continue to find ways for cross-utilization with operations while minimizing the downtime needed to ensure everyone’s knowledge is the same.

Daniel Simpson


We use Infosec Skills to provide base level knowledge for employees. We also use the services to provide in depth learning for employees as they encounter new technologies. If an employee is is assigned to a new project, we can rely on Infosec Skills to provide a rapid concentrated learning environment. This rapid concentrated learning positions our employees for success.

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Plans & pricing

  • Infosec Skills Personal

    $299 / year

    • 190+ role-guided learning paths (e.g., Ethical Hacking, Threat Hunting)
    • 100s of hands-on labs in cloud-hosted cyber ranges
    • Custom certification practice exams (e.g., CISSP, Security+)
    • Skill assessments
    • Infosec peer community support
  • Infosec Skills Teams

    $799 per license / year

    • Team administration and reporting
    • Dedicated client success manager
    • Single sign-on (SSO)
      Easily authenticate and manage your learners by connecting to any identity provider that supports the SAML 2.0 standard.
    • Integrations via API
      Retrieve training performance and engagement metrics and integrate learner data into your existing LMS or HRS.
    • 190+ role-guided learning paths and assessments (e.g., Incident Response)
    • 100s of hands-on labs in cloud-hosted cyber ranges
    • Create and assign custom learning paths
    • Custom certification practice exams (e.g., CISSP, CISA)
    • Optional upgrade: Guarantee team certification with live boot camps

Unlock 7 days of free training

  • 1,400+ hands-on courses and labs
  • Certification practice exams
  • Skill assessments

Award-winning training that you can trust

Comprehensive Cybersecurity Training - Infosec Skills
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