20-05-2025, 06:14 PM
(This post was last modified: 20-05-2025, 06:16 PM by Mark Knowles.)
3) Homophonic cipher
Existed before the 15th century (?)
I know of a homophonic cipher from 1397 in "The Chronicles of Lucca" by Giovanni Sercambi. This book available online contains a Milanese cipher that was intercepted and deciphered. However, the homophones are only on the vowels. Homophones appear to be a late(?) 14th century innovation in Europe though it is hard to be sure.
Existed before the 15th century (?)
I know of a homophonic cipher from 1397 in "The Chronicles of Lucca" by Giovanni Sercambi. This book available online contains a Milanese cipher that was intercepted and deciphered. However, the homophones are only on the vowels. Homophones appear to be a late(?) 14th century innovation in Europe though it is hard to be sure.