Myths & mysteries
Worked as a medieval postal cryptographer
HERE’S THE INTERESTING PART
Al-Kindi is remembered as a towering intellectual figure in esoteric philosophy, but he essentially paid the bills by working for the medieval postal service. He developed incredibly advanced frequency analysis cryptography so the government could read intercepted mail without anyone noticing, making him the absolute pioneer of reading other people's diaries.
This article describes beliefs and cultural traditions, which are not necessarily scientifically established facts.
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