Non-repudiation - ensuring proof that a specific actor took action We can use cryptography to to prove that some actor took an action.

We can use cryptography to "authenticate," or check if someone is who they claim to be.

I've been studying CISSP materials, and this series is an attempt to synthesize my studies and notes into something consumable. I hope...

The most common understanding of cryptography's utility is to enable confidentiality, but it does much more than that.