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
The World that was Ours is implicit in any totalitarian state.' "The World that was Ours" is dedicated to 'the men of Rivonia' - Nelson Mandela, Walter Sisulu, Ahmed Kathrada, Dennis Goldberg, Govan Mbeki, Elias Motsoaledi, Andrew Mlangeni and Rusty Bernstein - as well as to their devoted counsel, Bram Fischer. The World that was Ours The World that was Ours (1967) is Hilda Bernstein's personal account of life in Johannesburg under the oppressive surveillance of the apartheid regime. Hilda and her husband Rusty Bernstein were both detained, along with many others, in the aftermath of the Sharpeville massacre of 1960. Upon their release, Rusty