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KL-51 on display at the National Cryptologic Museum in 2005

The KL-51 is an off-line keyboard encryption system that read and punched paper tape for use with teleprinters. In NATO it was called RACE (Rapid Automatic Cryptographic Equipment).

It was developed in the 1970s by a Norwegian company, Standard Telefon og Kabelfabrik (STK). It used digital electronics for encryption instead of rotors, and it may have been the first machine to use software based crypto algorithms. KL-51 is a very robust machine made to military specifications.

U.S. National Security Agency bought it in the 1980s to replace the earlier KL-7. As of 2006, the U.S. Navy was developing plans to replace KL-51 units still in use with a unit based on a more modern Universal Crypto Device.^[1]

References

^ "Archived copy" (PDF). Archived from the original (PDF) on 2011-05-22. Retrieved 2008-05-29.{{cite web}}: CS1 maint: archived copy as title (link)

Sources

NSA museum caption shown in photo.
Crypto Machines - KL-51/RACE
http://www.knobstick.ca/pdf_files/race1.pdf

This cryptography-related article is a stub. You can help Wikipedia by expanding it.

[1] "Archived copy" (PDF). Archived from the original (PDF) on 2011-05-22. Retrieved 2008-05-29.{{cite web}}: CS1 maint: archived copy as title (link)

[1]

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+{{Short description|Keyboard encryption system}}
-{{unreferenced}}
+{{more footnotes|date=April 2015}}
+[[Image:KL-51.nsa.jpg|thumb|KL-51 on display at the [[National Cryptologic Museum]] in 2005]]
+The '''KL-51''' is an off-line keyboard [[encryption]] system that read and punched [[paper tape]] for use with [[teleprinter]]s. In [[NATO]] it was called '''RACE''' ('''Rapid Automatic Cryptographic Equipment''').
+It was developed in the 1970s by a [[Norway|Norwegian]] company, [[Standard Telefon og Kabelfabrik]] (STK). It used digital electronics for encryption instead of rotors, and it may have been the first machine to use software based crypto algorithms. KL-51 is a very robust machine made to military specifications.
-[[Image:KL-51.nsa.jpg|thumb|KL-51 on display at the [[National Cryptologic Museum]] in 2005.]]
-The '''KL-51''' was an off-line keyboard [[encryption]] system that read and punched  [[paper tape]] for use with [[teleprinter]]s. It was developed by the U.S. [[National Security Agency]]  in the [[1980s]] to replace the earlier [[KL-7]], but used digital electronics for encryption instead of [[rotor machine|rotors]].
+U.S. [[National Security Agency]] bought it in the 1980s to replace the earlier [[KL-7]]. As of 2006, the U.S. Navy was developing plans to replace KL-51 units still in use with a unit based on a more modern [[Universal Crypto Device]].<ref>{{Cite web |url=http://www.dtic.mil/descriptivesum/Y2007/Navy/0303140N.pdf |title=Archived copy |access-date=2008-05-29 |archive-date=2011-05-22 |archive-url=https://web.archive.org/web/20110522010713/http://www.dtic.mil/descriptivesum/Y2007/Navy/0303140N.pdf |url-status=dead }}</ref>
+==References==
-{{crypto-stub}}
+{{Reflist}}
+==Sources==
+*NSA museum caption shown in photo.
+*[http://www.jproc.ca/crypto/race.html Crypto Machines - KL-51/RACE]
+*http://www.knobstick.ca/pdf_files/race1.pdf
+{{Cryptography navbox | machines}}
 [[Category:National Security Agency encryption devices]]
+{{crypto-stub}}