1. Kullback worked in partnership with Frank Rowlett against RED cipher machine messages. 2. Later in 1934, Foss was able to break an early Japanese cipher machine . 3. The Enigma machines were a family of portable cipher machines with rotor scramblers. 4. The T52 was one such stream cipher machine that had weak key problems. 5. There were several books available that hint at ways to break cipher machines . 6. A sampling of artifacts at the International Spy Museum : _ Enigma Cipher Machine . 7. The Enigma rotor cipher machine was potentially an excellent system. 8. This was achieved by Lorenz SZ ( " Schl�sselzusatzger�t " ) in-line cipher machine . 9. Within a few weeks, Rejewski had discovered how to break the German Enigma cipher machine . 10. In 1929 the Enigma cipher machine in December 1932, began studying actuarial statistics at G�ttingen.
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