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Emperor Charles V’s Code Cracked After Five Centuries

maximus otter

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A team of researchers has cracked a five century-old code which reveals a rumoured French plot to kill the Holy Roman Emperor and King of Spain Charles V.

Charles was one of the most powerful men of the 16th century, presiding over a vast empire that took in much of western Europe and the Americas during a reign of more than 40 years.

It took the team from the Loria research lab in eastern France six months to decipher the letter written in 1547 by the emperor to his ambassador in France.

it-team-loria-lab-months-crack-letter-code-afp-640x427.jpg


The letter from Charles V to Jean de Saint-Mauris had languished forgotten for centuries in the collections of the Stanislas library in Nancy.

Cecile Pierrot, a cryptographer from Loria, first heard of its existence at a dinner in 2019, and after much searching was able to set eyes on it in 2021.

In painstaking work backed by computers, Pierrot found “distinct families” of some 120 symbols used by Charles V.

“Whole words are encrypted with a single symbol” and the emperor replaced vowels coming after consonants with marks, she said, an inspiration probably coming from Arabic.

In another obstacle, he also used symbols that mean nothing to mislead any adversary trying to decipher the message.

The breakthrough came in June, when Pierrot managed to make out a phrase in the letter, and the team then cracked the code with the help of historian Camille Desenclos.

Another letter from Jean de Saint-Mauris, where the receiver had doodled a form of transcription code in the margin, also helped.

[The letter] confirms the somewhat degraded state” in 1547 of relations between Francis I and Charles V, who had signed a peace treaty three years earlier, she said.

https://www.breitbart.com/news/emperor-charles-vs-secret-code-cracked-after-five-centuries/

maximus otter
 
A team of researchers has cracked a five century-old code which reveals a rumoured French plot to kill the Holy Roman Emperor and King of Spain Charles V.

Charles was one of the most powerful men of the 16th century, presiding over a vast empire that took in much of western Europe and the Americas during a reign of more than 40 years.

It took the team from the Loria research lab in eastern France six months to decipher the letter written in 1547 by the emperor to his ambassador in France.

it-team-loria-lab-months-crack-letter-code-afp-640x427.jpg


The letter from Charles V to Jean de Saint-Mauris had languished forgotten for centuries in the collections of the Stanislas library in Nancy.

Cecile Pierrot, a cryptographer from Loria, first heard of its existence at a dinner in 2019, and after much searching was able to set eyes on it in 2021.

In painstaking work backed by computers, Pierrot found “distinct families” of some 120 symbols used by Charles V.

“Whole words are encrypted with a single symbol” and the emperor replaced vowels coming after consonants with marks, she said, an inspiration probably coming from Arabic.

In another obstacle, he also used symbols that mean nothing to mislead any adversary trying to decipher the message.

The breakthrough came in June, when Pierrot managed to make out a phrase in the letter, and the team then cracked the code with the help of historian Camille Desenclos.

Another letter from Jean de Saint-Mauris, where the receiver had doodled a form of transcription code in the margin, also helped.

[The letter] confirms the somewhat degraded state” in 1547 of relations between Francis I and Charles V, who had signed a peace treaty three years earlier, she said.

https://www.breitbart.com/news/emperor-charles-vs-secret-code-cracked-after-five-centuries/

maximus otter
Interesting and weird article. Just like the online news source. :) :) :)
 
This codes / ciphers webpage ( http://cryptiana.web.fc2.com/code/crypto.htm ) has a webpage dedicated to Spanish ciphers used during the reign of Charles V):

http://cryptiana.web.fc2.com/code/spanish2.htm

One of the examples listed there is the "Granvelle-Saint Mauris Cipher (1548)". The recipient seems to be the same Saint Mauris, but the year doesn't match the 1547 cited in the news article. Additionally, the letter displayed by the recent code breakers does not match the letter's image archived at the cipher website.

As such, it's unclear whether the cipher displayed at this website is the same one used in the recently-decoded letter.
 
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