Civil War Ciphers and Codes: Information Security Goes South
Our Own Devices
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Ever wonder how a rotary telephone works, how sailors and pilots navigated by the stars, or how mechanical calculators perform complex math using only gears? Then you've come to the right place! Our Own Devices is a channel dedicated to the fascinating world of vintage technology, and the many elegant and ingenious ways our ancestors solved even the most complex technical problems. Questions or comments? Have a fascinating device you'd like covered on the channel? Please contact me at [email protected] Want more fascinating history? I am a regular staff writer for Today I Found Out and many of its sister channels: https://www.youtube.com/@TodayIFoundOut
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Thank you to Private Internet Access VPN for sponsoring this video. By clicking my link - https://www.piavpn.com/ourowndevices - you can get 83% off on Private Internet Access! That’s just $2.03 a month, and you also get 4 extra months completely for free! During the American Civil War (1861-65), both the Union and the Confederacy used a variety of codes and ciphers to protect vital communications - with varying degrees of success. In this episode, we look at some of the most common systems used by both sides. 0:00 Introduction 1:26 Private Internet Access VPN Sponsor Segment 3:08 Jefferson Wheel Cipher/M-94 7:42 Difference Between Codes and Ciphers 10:18 Stager Route Cipher 15:24 Confederate Substitution Ciphers 16:39 Vigenere Cipher 18:15 Confederate Cipher Cylinder/Disk 19:40 Cryptanalysis of Vigenere Cipher 22:30 One-Time Pad Ciphers 23:13 Book/Dictionary Codes 24:09 Grille Ciphers 26:41 Outro SOURCES: https://ww2.amstat.org/mam/06/Sauerberg_route-essay.html http://www.c3teachers.org/wp-content/uploads/2016/01/ExplainerCipherintheCivilWar-Final.pdf https://cryptiana.web.fc2.com/code/civilwar0.htm https://www.monticello.org/research-education/thomas-jefferson-encyclopedia/wheel-cipher/ https://www.cryptomuseum.com/crypto/usa/ccd/index.htm https://lincolnconspirators.com/2019/07/26/john-wilkes-booths-confederate-cipher/ https://cryptiana.web.fc2.com/code/civilwar5.htm#SEC2 https://cryptiana.web.fc2.com/code/civilwar4.htm https://cryptiana.web.fc2.com/code/civilwar6.htm
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