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Understanding Encryption

  • Tuesday, April 07, 2020 at 3:30 PM EDT (2020-04-07 19:30:00 UTC)
  • Kevin Ripa

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Anyone in the infosec industry for 5 minutes has had a training lecture on encryption. The vast majority have walked away scratching their head. Encryption seems like a seriously complicated subject, and it is, but only if you are building a new algorithm. The types and understanding are not. They just haven't been presented properly. You have heard of symmetric encryption, asymmetric encryption, and hashing. But what are they under the hood, and where do you use each of them? You will leave this presentation absolutely understanding all three, as well as non-repudiation. We will go through where each is used, and when and how they all get used together. Encryption is everywhere. We need to understand what is happening and be able to explain it. As an added bonus, we will actually be doing the math behind the Diffie-Hellman key exchange BY HAND, just to show that it is not a scary and mysterious as people think. Given that you perform the Diffie-Hellman key exchange many times every day, it is a good idea to understand it and know where it is happening.

Speaker Bio

Kevin Ripa

An investigator at heart, Kevin Ripa bought his first computer as a tool for writing reports for his private investigation agency. As he worked through typical user issues, the "why" of what was going wrong in his machine kept him up at night. So Kevin turned his investigative skills toward his computer and quickly became fascinated by the world inside of it. Now a 25-year veteran of the digital investigations field, Kevin's enthusiasm has not waned: "IT security and digital forensics still inspire me every day, and I can't wait to wake up in the morning and get to work!"


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