Category Archives: great cipher

Figuring out the Unknown takes Forever

It took cryptanalysts nearly 2 centuries to crack the Great Cipher. It was a mystery that took the cryptology world by storm, as hundreds of cryptanalysts of all levels would be befuddled by the difficulty of the puzzle of years and years. It was not until  the cipher was passed on to Bazeries that the […] Continue reading

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A Great Deal of Creativity

As cryptographers attempted to improve the security of ciphers, while maintaining their practicality, more complex ciphers were being created.  The monoalphabetic substitution cipher was becoming less secure, leading to the advent of the polyalphabetic cipher and the homophonic cipher.  Yet, … Continue reading Continue reading

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Deciphering the Great Cipher

For an impressive two-hundred years, the Great Cipher of Louis XIV thwarted several generations of accomplished cryptanalysts – a surprising feat, given that it did so through the manipulation of a substitution cipher. The cipher was created by the son-and-father … Continue reading Continue reading

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What’s So "Great" About the Great Cipher?

The Great Cipher was created by the Rossignols in the 17th century and remained unbroken for the next two centuries due to a number of security features that made it nearly unbreakable. When an expert French cryptographer Bazeries got his … Continue reading Continue reading

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The Great Cipher Eludes Great Minds

The Great Cipher was elusive to even the greatest scholars for more than two centuries, creating a whole span of encrypted letters containing enigmatic answers to some of the biggest speculations in history. When the breakthrough in the pattern of the … Continue reading Continue reading

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The Great Decipherment

The Great Cipher, invented by the Rossignol family, was such a difficult cipher to crack because of two important factors. First the details and use of it was lost one the Rossignols died, which meant hat cryptanalyst had to start … Continue reading Continue reading

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Cipher Complexity of the Great Cipher

The Great Cipher, created by Antoine and Bonaventure Rossignol was, at its time, one of the greatest ciphers ever made. Cryptanalysists for 200 years worked to break the secrets hidden in the Rossignol’s cipher, but it was only until Étienne … Continue reading Continue reading

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