Cryptanalysis of the Enigma immense problem and it gave a great deal of trouble. Work on a high speed machine had been started by Wynn-Williams of the TRE late in 1941 and some nine months later Harold Keen of BTM started work independently. Early in 1942, Bletchley Park were a long way from possessing a high speed machine of any sort. Eventually, after a long period of being unable to decipher U-boat messages, a source of cribs was found. This was the Kurzsignale (short signals), a code which the German navy used to minimize the duration of transmissions, thereby reducing the risk of being
The World that was Ours 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 was placed under house arrest, while Hilda's day-to-day activities were closely monitored by the Special Branch, if not altogether prohibited. Her memoir recalls these fraught years in the build-up to the landmark Rivonia Trial, the events and ordeals of the Trial itself, and finally the couple's