CD-57
≈ 3 min read
Names in other languages
No names in other languages are held for this entry yet.
Article bodies are English and are not machine-translated. A name in another language is not a translation of the article.
The (Hagelin) CD-57 was a portable, mechanical cipher machine manufactured by Crypto AG, first produced in 1957. It was derived from the earlier CD-55, and was designed to be compatible with the larger C-52 machines. Compact, the CD-57 measured merely 5 1/8in × 3 1/8in × 1 1/2in (13 × 8 × 3.8 cm) and weighed 1.5 pounds (680 gr). The CD-57 used six wheels. A variant is the CD-57(RT), a similar device using a one-time pad system rather than rotating wheels. The STG-61 was a licensed copy of the CD-57 by Hell. Sullivan (2002) shows how the CD-57 can be attacked using a hill climbing search technique.
The (Hagelin) CD-57 was a portable, mechanical cipher machine manufactured by Crypto AG, first produced in 1957. It was derived from the earlier CD-55, and was designed to be compatible with the larger C-52 machines. Compact, the CD-57 measured merely 5 1/8in × 3 1/8in × 1 1/2in (13 × 8 × 3.8 cm) and weighed 1.5 pounds (680 gr). The CD-57 used six wheels. A variant is the CD-57(RT), a similar device using a one-time pad system rather than rotating wheels. The STG-61 was a licensed copy of the CD-57 by Hell. Sullivan (2002) shows how the CD-57 can be attacked using a hill climbing search technique.
See also
M-209
Notes
References
Wayne G. Baker, Solving a Hagelin, Type CD-57, Cipher, Cryptologia, 2(1), January 1978, pp1–8. Louis Kruh, Cipher Equipment: Hagelin Pocket Cryptographer, Type CD-57, Cryptologia, Volume 1, 1977, pp255–260. Geoff Sullivan, Cryptanalysis of Hagelin machine pin wheels, Cryptologia, 26(4), pp257–273, October 2002.
External links
Photographs and a simulator (Windows) Photographs of the CD-57: [https://web.archive.org/web/20071008092838/http://www2.kulturprozent.ch/digitalbrainstorming/data/events/stuerzinger/image02.jpg, * Jerry Proc's pages: [http://www.jproc.ca/crypto/cd57.html, * [https://web.archive.org/web/20060317161412/http://www.gemmary.com/instcat/11/p25-215-11.html Information about the STG-61
Text derived from https://en.wikipedia.org/w/index.php?oldid=1251265686 under CC BY-SA 4.0; modifications have been made.