How the "Unbreakable" Vigenere Cipher Was Broken

In this weeks video we dive deep into cryptography and explore the vigenere cipher. What it is, how it was created, and most importantly how it is broken. The mathematics surrounding this cipher is fascinating and at the end we show one way you make this easily broken cipher much stronger and actually unbreakable again! Here is the code to break from the end of the video: Ho nhdh fh tye dbplei? Iq hojty, tks twee-wlzi-X-uje-wvfh qlevhfdn zs xbcpii frf qwe kedqetr. Jhh rltse’t nbll wyeq mlj sgefwcxcrlom txlc uvs fi bvcdipt sye fok'i sve lbqd yfuu triuie. Wvb siwflqratp iq okhwvrlbd ihzs tibhtzoq zfts niwv xc idpowzxt rsvijetzoq vfsdvn esktakh wvb fuvswwlc. Tye vhrseet kop pn zdho lu tye nwkss ff vwqjakirbp ihrt vvb licl hbzduethf fc hvr owct, aed zvbc tye uspeoesh todm khh hbpcyeu rltse’t ddmay ko dbv df khhgb hikudhfdnj, tks jptyepoqxcj shsjh ujeosph. Blt lh fh fiaxrraeet wc xhslmh hept ne nbll ak a pcjtnk oi fbulvcwwlc tye nwkss ff vwqjakirbp xn nhlqe le dijvq jsv srabihznj. Ken? Bvcdipt wv drb’q znfw zvxi wv drb’q znfw. Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?” We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom. Instagram: https://instagram.com/maththeworld Twitter/X: https://twitter.com/math_the_world Facebook: https://facebook.com/maththeworldproject Email: MathTheWorld@byu.edu Created by Doug Corey Script: Doug Corey and Jennifer Canizales Audio: Doug Corey Animation: Jennifer Canizales Music: Coma Media © 2023 BYU