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Hagelin C-52
Pin-wheel cipher machine - this page is a stub

C-52 was a pin-and-lug cipher machine with interchangeable cipher wheels, developed around 1951 by the Swede Boris Hagelin and manufactured by Crypto AG in Zug (Switzerland). Because of the interchangeable cipher wheels it was more secure that predecessors like the C-446, but less secure that its big brother, the CX-52, which featured irregular stepping, and optionally OTT.

This page is currently being rewritten. Additional information will be posted here as and when it becomes available. For now, please refer to our page about the CX-52 for further information.



 CX-52
  
Arab C-52 with open lid

Arab version of CX-52 Arab CX-52 ready for use Arab C-52 Arab C-52 front view Arab C-52 with open lid Arab C-52 close-up Close-up of the cipher wheels and the cage
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Arab version of CX-52
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Arab CX-52 ready for use
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Arab C-52
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Arab C-52 front view
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Arab C-52 with open lid
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Arab C-52 close-up
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Close-up of the cipher wheels and the cage

Features


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M-209 compatibility
Although the C-52 was far more advanced and less predictable than the M-209 (C-38), it was still possible to make it backwards compatible. For this, one would use the following wheels:

C-52 → 26 25 46 42 38 34
C-38 → 26 25 23 21 19 17

Note that the rightmost four wheels of the C-52 have twice the number of steps of the C-38 wheels. With carefully chosen pin-settings it was therefore possible to make the two models interoperable. In this mode, the first five bars of the cage (1-5) were not used, so that the remaining 27 bars could act like the 27 bars of the M-209/C-38.

Arab version
...

The image on the right shows the Arab version of the C-52, which was made especially for the arab world. The machine shown here comes from the personal collection of Hans Bühler — the sales representative of Crypto AG who was arrested in Iran in 1992.

  
Arab C-52 with open lid

Arab version of CX-52 Arab CX-52 ready for use Arab C-52 Arab C-52 front view Arab C-52 with open lid Arab C-52 close-up Close-up of the cipher wheels and the cage
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Arab version of CX-52
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Arab CX-52 ready for use
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Arab C-52
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Arab C-52 front view
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Arab C-52 with open lid
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Arab C-52 close-up
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Close-up of the cipher wheels and the cage

Further information
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Crypto Museum. Created: Sunday 16 February 2020. Last changed: Sunday, 23 February 2020 - 20:40 CET.
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