Cryptology Fundamentals: Perfect Ciphers & the One-Time Pad 🔐

#cryptology, #cryptography, #cryptanalysis, #lecture, #course, #tutorial

In this video, we show the basics of cryptology (cryptology = cryptography and cryptanalysis).

This video here shows what a perfect cipher is and discusses how the one-time pad works. Also, as a fun part we show how to construct a perfect Caesar cipher - with arguable practical usage :-)

Finally, we show the one-time pad in CrypTool 2. Here, we also present how you can create arbritrary plaintext messages using "wrong" one-time pads and what happens, when you encrypt two different plaintexts using the same one-time pad (what you should never do!).

To see all videos in the "Basics of Cryptology" series, use this playlist: https://www.youtube.com/playlist?list=PLMuvAbyIl0PT6zaRVpK0FCSNMgwAOckTt

If you are interested in details about CrypTool 2, you may have a look at this video here, which gives a short introduction: https://www.youtube.com/watch?v=dELT2-Vgsr8

Finally, you may download the latest version of CrypTool 2 here: https://www.cryptool.org/en/ct2/downloads Like what I do 😄? Help fuel my crypto obsession 🎓 — buy me a coffee here☕— thx: https://buymeacoffee.com/cryptographyforeverybody