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In cryptography, the M-209, designated CSP-1500 by the United States Navy (C-38 by the manufacturer) is a portable, mechanical cipher machine used by the US military primarily in World War II, though it remained in active use through the Korean War. The M-209 was designed by Swedish cryptographer Boris Hagelin in response to a request for such a portable…
Measurement, Basic operation & Security
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key letter wheels machine left cipher wheel set position ciphertext drum pins letters positions hagelin message operator right settings pin
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| magnesium | instance of | but the Germans had only limited supplies of lightweight metals | 0.80 | text |
| aluminum | instance of | but the Germans had only limited supplies of lightweight metals | 0.80 | text |
| and it was simply too heavy for tactical use | instance of | but the Germans had only limited supplies of lightweight metals | 0.80 | text |
| M-209 | related to Basic operation | Basic | 0.60 | section |
| M-209 | related to Basic operation | Six | 0.60 | section |
| M-209 | related to Basic operation | These | 0.60 | section |
| M-209 | related to Basic operation | To | 0.60 | section |
| M-209 | related to Basic operation | An | 0.60 | section |
| M-209 | related to Basic operation | This | 0.60 | section |
| M-209 | related to Basic operation | Repeating | 0.60 | section |
| M-209 | related to Basic operation | Morse | 0.60 | section |
| M-209 | related to Basic operation | Since | 0.60 | section |
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