無敵の暗号を解くカギは「分割統治」。あるいはコンピュータ科学を貫く大原則について。【暗号3】#81

This is the third installment of our "Ciphers" series. We discuss solving the Vigenère cipher, including "Who was Babbage, who cracked the invincible Vigenère cipher?", "Use arithmetic, not words, to identify the cycle," and "Vigenère is not practically invincible." [Table of Contents] 0:00 Divide and Conquer is Back 0:26 Let's Divide the Vigenère Cipher 3:51 Who was Babbage, who cracked the Vigenère cipher? 8:38 Arithmetic is used to identify the cycle 19:51 How about decrypting it linguistically? 22:55 What solution did the father of computers arrive at? 29:57 Vigenere-kun is not practically invincible. [References] 〇 Codebreaking https://amzn.to/46sW80V 〇 Introduction to Cryptography, 3rd Edition: Alice in Secret Country https://amzn.to/3JJ3iVd 〇 History of Computers https://amzn.to/42AuhIW [Join the Supporter Community Here] https://yurugengo.com/support [Parent Channel: Yuru Linguistics Radio]    / @yurugengo   [Brick-and-mortar Project: Yuru Student Cafe]    / @yurugakuto   [Letters Form] https://forms.gle/BLEZpLcdEPmoZTH4A ※We look forward to receiving your fun letters! [Click here to request work!] [email protected] [Motomi Hori Profile] Graduated from the Faculty of Science and Technology, Keio University. He specializes in information engineering and makes a living by creating and littering the web with content. His current main source of income is his paid note magazine, which features academically badmouthing people. Twitter →   / kenhori2   Note Magazine → https://note.com/kenhori2/m/m125fc452... Personal YouTube →    / @kenhorimoto   [Mizuno Taiki Profile] Graduated from the School of Letters at Nagoya University. His specialty is linguistics. He works as an editor at a major publishing company. While one might think his knowledge of linguistics is useful in his day job, that's not necessarily the case. Twitter →   / yuru_mizuno   [Sister Channels] ◯ Easy Musicology Radio (   / @yuruongaku  ) ◯ Easy Folklore Radio (   / @yuruminzoku  ) ◯ Easy Astronomy Radio (   / @yurutenmon  ) ◯ Easy Calligraphy Radio (   / @yurushodo  ) ◯ Easy Ecology Radio (   / @yuruseitai  ) ◯ Easy Philosophy Radio (https://open.spotify.com/show/7t8NNVq...) #Cryptography #EasyComputerScienceRadio_Cryptography