HOW TO MAKE… AND CRACK A SECRET CODE

IMETAY OTAY ETGAY RACKINGCAY*

GET MAKING: • Caesar shift: Julius’ favourite, apparently. Write out the alphabet and then again, but ‘shifted’ along, by 1, 2, up to 25 letters. To read, you just need to know how many letters it's been shifted by. • Keyboard shift: as the above, but looking at the QWERTY layout instead. So, Q becomes ‘A’, W become ‘S’ and so on. •Leon Battista Alberti used two discs – one with the alphabet, one with a scrambled version. Wheels are set the same way to write and read. • The ‘Masonic’ cipher puts the alphabet into a grid series: each letter is represented by corresponding grid lines. Or make a grid like a map, with co-ordinates for a letter. •Try transposition (like childhood fave Pig Latin): keeping original words, but moved…

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The Simple Things (Digital) - 1 Issue, October 2023

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