19. Vigenère Cipher

In this episode we talk about the Vigenère cipher with Dan. Many things about the  Vigenère cipher - including it's name - have been misattributed - find out why. The story also resolves last week's mystery and follow the trail of clues. And Dan makes a new segment without host permission. Barnabas seems to think that he's loosing control of the show.

Links:
Cryptanalytic methods:

• https://en.wikipedia.org/wiki/Vigen%C3%A8re_cipher#Friedman_test
• https://en.wikipedia.org/wiki/Kasiski_examination
• https://en.wikipedia.org/wiki/Vigen%C3%A8re_cipher#Key_elimination

Crypto Corner encoding/decoding:

• https://crypto.interactive-maths.com/vigenegravere-cipher.html#act
• https://crypto.interactive-maths.com/kasiski-analysis-breaking-the-code.html#act

The background music in this episode, as always, is by Bio Unit, ComaStudio and Ketsa, and our theme is "Mosquito" by Caspar Babypants.

 You can find Dr. Gareth's work at drgarethmoore.com. He has released many puzzle and cipher related books for kids, as well as a lot of stuff for adults, too. 

Thank you for listening.

Chapters

• 1:03 Intro
• 2:12 Key (Apologies For Terrible Voice)
• 4:02 Steve's Tips: Vigenère Cipher
• 6:21 History