Writing Enigma

The Enigma writing machine is the second model of the Enigma rotor key machine .

history

In the long history of the different Enigma models , the so-called "Writing Enigma" introduced in 1924 was the second (see also: Enigma family tree under web links ). Like the trading machine introduced and propagated in the previous year in 1923 , it belongs to the “writing cipher machines” and not to the “incandescent lamp cipher machines” that appeared at the same time. In contrast to its predecessor, it did not have a ball head but used type levers for printing. After the first version of the “Writing Enigma” proved to be unreliable, a technically improved version was released two years later, in 1926. Like its predecessor, however, it was not a great commercial success , mainly because of the high price of ℛℳ 8,000  .

literature

• Friedrich L. Bauer : Deciphered Secrets. Methods and maxims of cryptology. 3rd, revised and expanded edition. Springer, Berlin et al. 2000, ISBN 3-540-67931-6 .
• Friedrich L. Bauer: Historical Notes on Computer Science . Springer, Berlin 2009, ISBN 3-540-85789-3 .
• Louis Kruh, Cipher Deavours: The Commercial Enigma - Beginnings of Machine Cryptography . Cryptologia, Vol. 26 (1), January 2002, p. 1. PDF; 0.8 MB.Retrieved March 4, 2016.
• Heinz Ulbricht: The Enigma cipher machine - deceptive security . A contribution to the history of the intelligence services. Dissertation Braunschweig 2005. PDF; 4.7 MB
• Anders Wik: The First Classical Enigmas - Swedish Views on Enigma Development 1924–1930. Proceedings of the 1st International Conference on Historical Cryptology, PDF; 12.5 MB 2018, pp. 83-88.

Web links

photos

• Photo of the "Writing Enigma"

Documents

• The Enigma writing cipher sales brochure (front), ca.1924.
• The Enigma writing cipher sales brochure (back), approx. 1924.
• Brief description of the writing “ENIGMA” cipher machine (PDF; 1.7 MB), scan of the product brochure from 1931.

information

• Writing Enigma in the Crypto Museum (English)
• Enigma Family Tree Family tree of the Enigma (English)

Individual evidence

1. ↑ Louis Kruh, Cipher Deavours: The commercial Enigma - Beginnings of machine cryptography . Cryptologia, Rose-Hulman Institute of Technology, Taylor & Francis, Philadelphia PA 26.2002,1 (January), p. 5. ISSN  0161-1194 Retrieved March 4, 2016. PDF; 0.8 MB