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