Archive for date: July 5, 2010

An Implementation of Byrnes’ Chaocipher

July 5, 2010 | Cryptography | By: Mark VandeWettering

Okay, insomnia got me, so I went ahead and implemented it in Python. It appears to work reasonably well, at least it successfully deciphers their test message. You can specify the key by specifying the -c and -p options, which are the settings for the cipher and plain wheels. You should pass a permutation of […]

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The Chaocipher revealed! from Cipher Mysteries

July 5, 2010 | Cryptography | By: Mark VandeWettering

Stumbling back through articles in Slashdot, I found a pretty nifty article on one of my favorite subjects: historical cryptography. The story goes that back in 1918, a cipher system/machine was invented by John F. Byrne. Rumor says that it was very strong, and yet could be implemented using a mechanism that would fit in […]

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