25/03/2024

A Cipher between Emperor Charles V and Young Prince Philip (1545)

A letter with a ciphered paragraph from Charles V to Prince Philip (1545) is presented on Spanish Ministry of Culture's website (pdf) and PARES' facebook page. The cipher turned out to be the same as the one broken by George Lasry and Carlos Köpte independently in 2023. So, I promoted the cipher as "Charles V-Prince Philip Cipher (1545)" in "Ciphers during the Reign of Emperor Charles V".

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