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Второй период (jan 1, 800 – jan 1, 1400)

Description:

Ознаменовался введением в обиход полиалфавитных шифров.

Added to timeline:

Шифрование данных

ByNick Vlasenko
27 Jan 2023
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Date:

jan 1, 800
jan 1, 1400
~ 600 years
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