Transposition Cipher Encloding

Описание к видео Transposition Cipher Encloding

This scheme of work, published free of charge by The Digital Schoolhouse and Bletchley Park builds on ideas published in 2006 by Mark G.Simkin entitled "Using Spreadsheets to Teach Data Encryption Techniques". The author explains how to model a transposition and substitution cipher using spreadsheet functions such as concatenate, vlookup and if statements. The scheme also models the modulo-2 addition cipher and relates how one of the world's first computers, Colossus, was used to crack the German encrypted messages, using the successor to Enigma, the Lorenz SZ42A, nicknamed Tunny by the Allies.

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