The Four-Square Cipher Explained
Автор: Cryptography for Everybody
Загружено: 2023-01-11
Просмотров: 5465
Описание:
#cryptology, #cryptography, #cryptanalysis
The four-square cipher was invented by Félix-Marie Delastelle and published in 1902. It uses four Polybius squares. In this video, we first explain how the cipher works, its keyspace size, and unicity distance. Then, we show how to use the four-square cipher component of CrypTool 2 to encrypt and decrypt texts.
A small article on my blog about the cipher: https://www.kopaldev.de/2023/01/11/th...
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: • Basics of Cryptology – Part 1 (Cryptograph...
You can download the latest version of CrypTool 2 from here: https://www.cryptool.org/en/ct2/downl...
Visit my blog: https://www.kopaldev.de
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