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 was the last music Hubert ever made… so I felt a duty of care. I asked [Dr. John] to help me finish it and he agreed." Hubert Sumlin died 13 days after the recording session for "Cracking The Code" and the album captures his last ever recorded performance. Sumlin also posthumously provided inspiration for lead-off single ""Holla"". Petit recalled: "I’m thinking… it’s a shame we’ve got all these people celebrating [Hubert] and he’s not on [Hubert’s Blues]. So I went back to the tape of Hubert and I arranging the song and picked out the bits that might work. And