AES Key Expansion Explained: How the Key Schedule Secures Your Data 🔐

#cryptology, #cryptography, #cryptanalysis

In this video we discuss the key expansion or key scheduling of the Advanced Encryption Standard (AES) our current modern standard for symmetric encryption. AES is now older than 20 years but still very secure. All attacks found so far are only theoretical attacks. AES is the successor of the Data Encryption Standard (DES).

If you did not see the previous video, where we discuss AES in detail, watch it here: https://www.youtube.com/watch?v=h6wvqm0aXco

We also show the visualization of the AES key expansion in CrypTool 2.

If you are interested in implementing AES on your own, we highly recommend the following wikipedia articles:
- https://en.wikipedia.org/wiki/Advanced_Encryption_Standard
- https://en.wikipedia.org/wiki/Rijndael_MixColumns
- https://en.wikipedia.org/wiki/AES_key_schedule

You find the AES visualizations in CT-Online here:
- https://www.cryptool.org/en/cto/aes-step-by-step
- https://www.cryptool.org/en/cto/aes-animation

If you are interested in learning the fundaments of cryptology, let me invite you to have a look at our video series about the basics of cryptology, also for beginners: https://youtu.be/jbumW7Ym03o

You can download the latest version of CrypTool 2 from here: https://www.cryptool.org/en/ct2/downloads
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