Statements (25)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
crypt
|
| gptkbp:alsoKnownAs |
gptkb:SIGABA
|
| gptkbp:countryOfOrigin |
gptkb:United_States
|
| gptkbp:developedBy |
gptkb:Frank_Rowlett
gptkb:William_Friedman |
| gptkbp:enteredService |
1930s
1940s 1950s |
| https://www.w3.org/2000/01/rdf-schema#label |
Type B Cipher Machine
|
| gptkbp:mechanismOfAction |
electromechanical rotor machine
|
| gptkbp:notableFor |
high security
never broken by enemy cryptanalysts |
| gptkbp:numberOfEngines |
15
|
| gptkbp:purpose |
military encryption
|
| gptkbp:relatedTo |
gptkb:Enigma_machine
gptkb:Typex |
| gptkbp:status |
retired
|
| gptkbp:successor |
gptkb:M-134-C_cipher_machine
|
| gptkbp:usedBy |
gptkb:United_States_Air_Force
gptkb:United_States_Army gptkb:United_States_Navy |
| gptkbp:usedDuring |
gptkb:World_War_II
|
| gptkbp:weight |
about 100 pounds
|
| gptkbp:bfsParent |
gptkb:Purple_cipher_machine
|
| gptkbp:bfsLayer |
6
|