Understanding Modern Cryptography: Stream Ciphers & RC4 Explained 🔐

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

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

This particular video shows in detail how the modern stream cipher RC4 works.

First, we discuss in detail the internal workings of RC4 and give a brief overview of its invention.

Then, we show a visualization of RC4 in JCrypTool (10:04). Finally, we use CT2 (from 13:04) to encrypt and decrypt text using RC4. Here, we also show what happens, if you change a byte in the plaintext, ciphertext, or in the key.

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

You may download the latest version of JCrypTool here: https://www.cryptool.org/en/jct-downloads

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