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File:SIGABA-ECM (Army M-134-C, Navy CSP-888) at NCM top view.agr.jpg

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Summary

Description
English: Top view of SIGABA cipher machine on display at the U.S. National Cryptologic Museum. The cipher unit, CSP-887, with the code and index wheels, has been removed and is on top of the SIGABA housing. Note the Controller switch at right. It has five positions:[1]:p. 19
  • O—Off
  • P—Plain text, each character typed is printed on the output tape. Used to type indicators and date/time groups before and after encrypting a message.
  • R—Reset, used when adjusting settings and zeroizing, nothing is printed
  • E—Encrypt
  • D—Decrypt
Date
Source Own work
Author ArnoldReinhold

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  1. ↑ CSP-1100C, Operating Instructions for ECM Mark 2 (CSP-888, CSP-889) and CCM Mark 1 (CSP-1600)]. U.S. Navy (May 1944).

Captions

SIGABA machine at National Cryptologic Museum

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inception

6 September 2019

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0.25 second

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4 millimetre

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image/jpeg

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current13:17, 16 September 2019Thumbnail for version as of 13:17, 16 September 20194,032 × 3,024 (6.2 MB)ArnoldReinholdUser created page with UploadWizard

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