Cryptology Basics: Understanding Block Cipher Modes of Operation 🔐

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

In this video, you learn what block cipher modes of operation are. With these modes, a block cipher can be used to encrypt more plaintext than the cipher's block length. The modes that we discuss are: electronic code book (ECB), cipher block chaining (CBC), cipher feedback (CFB), and output feedback (OFB). We also discuss, why ECB should never be used and we discuss an attack on CBC.

Blog article about the attack against the cbc encrypted luks partitions: http://www.jakoblell.com/blog/2013/12/22/practical-malleability-attack-against-cbc-encrypted-luks-partitions/

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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