CD-57
Encyclopedia : C : CD : CD5 : CD-57
The (Hagelin) CD-57 was a portable, mechanical cipher machine manufactured by Crypto AG, first produced in 1957 (1). 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 and weighed 1.5 pounds. 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 [link].
Sullivan (2002) shows how the CD-57 can be attacked using a hill climbing search technique.
Notes
(1) — one website gives the production dates as "1956 and 1957" [link], another website says "first produced in 1957" [link] .See also
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: [link], [link], [link]
- Jerry Proc's pages: [link], [link]
- [Information about the STG-61]
| Cipher machines [edit] |
| Rotor machines: CCM | Enigma | Fialka | Hebern | HX-63 | KL-7 | Lacida | M-325 | Mercury | NEMA | OMI | Portex | SIGABA | SIGCUM | Singlet | Typex |
| Mechanical: Bazeries cylinder | C-36 | C-52 | CD-57 | Cipher disk | HC-9 | Kryha | Jefferson disk | M-94 | M-209 | Reihenschieber | Scytale |
| Teleprinter: 5-UCO | BID 770 | KW-26 | KW-37 | Lorenz SZ 40/42 | Siemens and Halske T52 |
| Secure voice: KY-3 | KY-57 | KY-58 | KY-68 | OMNI | SIGSALY | STE | STU-II | STU-III | VINSON | SCIP | Sectéra Secure Module |
| Miscellaneous: Cryptex | JADE | KG-84 | KL-43 | Noreen | PURPLE | Pinwheel | Rockex |
From Wikipedia, the Free Encyclopedia. Original article here. Support Wikipedia by contributing or donating.
All text is available under the terms of the GNU Free Documentation License See Wikipedia Copyrights for details.