The volume I mentioned yesterday (ADD MS 4200) includes two letters that appear to be undeciphered: a letter of Bordeaux, French ambassador in London (1653) and a letter of the Prince of Condé (1654). I included sections for these in "Unsolved Historical Ciphers".
Both employ Arabic figures with diacritics and probably involve symbols representing syllables.
The ambassador's cipher would be similar to other French diplomatic ciphers having fairly regular assignment of syllables to numbers.
The Prince of Condé was in the Spanish Netherlands and fought the French at that time. If his cipher in 1654 was similar to the known cipher from 1655, it would involve non-trivial assignment of syllables to numbers.
No comments:
Post a Comment