Zig Zag Decryption Explained - Computerphile

XOR encryption is flawed. Professor Brailsford explains the zig-zag method that can reveal the precious key stream. Fishy Codes – Bletchley's Other Secret: https://youtu.be/Ou_9ntYRzzw XOR and the Half Adder: https://youtu.be/VPw9vPN-3ac Colossus & Bletchley Park: https://youtu.be/9HH-asvLAj4 5 Hole Paper Tape: https://youtu.be/JafQYA7vV6s The Professor's Supporting Documents: Sean/Dave ZigZag document: http://bit.ly/computerphileZigZag C Program to play with: http://bit.ly/ComputerphileZigZagCprog The real life decryption: http://bit.ly/ComputerphileTiltman Teleprinter codes: http://bit.ly/computerphile5holetape http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com