Cryptanalysis of the Enigma Bletchley Park to describe the network that used the same Enigma setting sheets. Initially these were recorded using coloured pencils and were given the names "red", "light blue" etc., and later the names of birds such as "kestrel". During World War II the settings for most networks lasted for 24 hours, although towards the end of the war, some were changed more frequently. The sheets had columns specifying, for each day of the month, the rotors to be used and their positions, the ring positions and the plugboard connections. For security, the dates were in reverse chronological order down the
Cracking The Code Petit described the album as "vinyl-centric", with the track running order chosen specifically to fit the Side A and Side B vinyl format. Petit began writing material for Cracking The Code in the spring of 2011. In an interview with Blues Matters magazine, Petit spoke of his initial plans for the album: "After The Crave I’d got a good idea of what I wanted the next album to sound like - which was to have the crackle of a live album in a studio setting with some boundary-pushing sonic experiences based around guitar-driven, blues-based music. I didn't want a set