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Cryptel 245
Telegraphy Cipher Machine - this page is a stub

Cryptel 245 was a cipher machine for telegraphy signals (telex), with a built-in electronic key generator, developed by Standard Telefon og Kabelfabrik A/S (STK) in Norway in 1967. It was based on the earlier Cryptel 240, was better built but had a less powerful crypto-algorithm.

The reason for giving the machine a less strong cipher, is that its predecessor, the Cryptel 240 was so powerful that the Norwegian government didn't want the machine to be sold commercially.

STK then decided to use a less powerful crypto-algorithm for the Cryptel 245, making it much more suitable for civil applications. The machine was reasonably successful and aprox. 400 units were built an sold in the following years.

The machine was succeeded in 1978 by the military RACE (KL-51) and its civil counterpart the Cryptel 265.

If you have any further information about this machine, please contact us.
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  1. Frode Weirud, Crypto Historian, Personal correspondence
    Crypto Museum, June 2012.

  2. Norwegian National Security Authority (NSM), Årsmelding 2008
    NSM Annual Report 2008 (Norwegian). Noen kryptosuksesser. p. 15.

  3. Leif Nilsen, NISnet Kick-off
    Thales Norway AS, PowerPoint presentation. 10 October 2007. Retrieved June 2012.
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Crypto Museum. Created: Saturday 16 June 2012. Last changed: Saturday, 24 February 2018 - 20:49 CET.
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