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M-209

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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Overview

Basic operation

Internal elements

Security

Production and usage

Advanced semantic analysis

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Map overview Semantic statistics

M-209

Nodes38
Edges37
Triples99
Avg. degree1.95
Density0.052632
Components1

How this topic connects Entity context

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M-209

Top relations

related to Further reading · 26
M-209 → Aegean Park Press, Arno, Automated Known-Plaintext Cryptanalysis, Barker, Bell Laboratories, Ciphertext Alone, Ciphertext-only, Cryptanalysis, Cryptologia, George, Hagelin Cryptograph, Hagelin M-209, ISBN, Kopal, Lasry, Morris, Nils, OCLC, Reeds, Ritchie
related to Production and usage · 19
M-209 → Allied, Code Box, Enigma, Germans, Groton, Had, Hagelin, It, M-209s, M-94, Menzer, Neither, NY, Over, Schlüsselkasten, SG-39, Smith Corona Typewriter Company, The, The German SG-41
related to Security · 17
M-209 → Allies, As, Dennis Ritchie, German, It, James Reeds, Korean War, Lorenz Electric, National Security Agency, NSA, Ritchie, Robert Morris, The, Tunny, US, US Army, World War II
related to External links · 10
M-209 → Ciphers, Codebreaking, Dirk Rijmenants' M-209 Simulator, Greg Goebel's Codes, M-209 ManualJerry Proc's, M-209 This, M-209A M-209, M-209Nick Gessler's, PythonVirtual Hagelin M-209, WindowsThe
related to Basic operation · 9
M-209 → An, Basic, Morse, Repeating, Since, Six, These, This, To
related to Example encoding · 6
M-209 → AAAAAA, After, Continuing, PONMLK, Since, The
related to overview · 5
M-209 → Each, From, Inside, The, These
related to Example configuration · 4
M-209 → Each, Prior, The, This

Important terminology Word statistics

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Important terminology

key letter wheels machine left cipher wheel set position ciphertext drum pins letters positions hagelin message operator right settings pin

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
magnesiuminstance ofbut the Germans had only limited supplies of lightweight metals0.80text
aluminuminstance ofbut the Germans had only limited supplies of lightweight metals0.80text
and it was simply too heavy for tactical useinstance ofbut the Germans had only limited supplies of lightweight metals0.80text
M-209related to Basic operationBasic0.60section
M-209related to Basic operationSix0.60section
M-209related to Basic operationThese0.60section
M-209related to Basic operationTo0.60section
M-209related to Basic operationAn0.60section
M-209related to Basic operationThis0.60section
M-209related to Basic operationRepeating0.60section
M-209related to Basic operationMorse0.60section
M-209related to Basic operationSince0.60section

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    Min side: 3
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