Recovering the wiring of enigma’s umkehrwalze a

Cryptologia

Volumn 24, Issue 1, 2000, Pages 55-66

  Marks, Philip ^a   Weierud, Frode ^a  

^a NONE   (France)

Author keywords

Enigma; Reflector; Rotor wiring; Umkehrwalze

Indexed keywords

EID: 35248895575     PISSN: 01611194     EISSN: 15581586     Source Type: Journal    
DOI: 10.1080/0161-110091888781     Document Type: Article

References (12)

1. Bloch, Gilbert and Ralph Erskine. 1986. Enigma: The Dropping of the Double Encipherment. Cryptologia 10(3): 134-141, reprinted in Cryptology Yesterday, Today, and Tomorrow, Cipher A. Deavours, David Kahn, Louis Kruh, Greg Mellen, Brian Winkel editors, Artech House, 1987.
2. Deavours, Cipher A. 1995. The Autoscritcher. Cryptologia. 19(2): 137-148.
3. Deavours, Cipher A. and Louis Kruh. 1985. Machine Cryptography and Modem Cryptanalysis. Norwood, MA: Artech House. See Chapter III.
4. Erskine, Ralph. 1996. Naval Enigma: An Astonishing Blunder. Intelligence and National Security, 11(3): 468-473.
5. Erskine, Ralph and Frode Weierud. 1987. Naval Enigma: M4 and Its Rotors. Cryptologia. 11(4): 235-244.
6. Fried, Walter J. 1944. Fried Report #F19. NARA College Park, Maryland, Record Group 457, Historic Cryptographic Collection, Box 880, NR 2612.
7. Hamer, David H., Geoff Sullivan, and Frode Weierud. 1998. Enigma Variations: An Extended Family of Machines. Cryptologia. 22(3): 211-229.
8. Hamer, David. 1999. Personal communication. The Lawn memorandum is dated May 9th, 1942, and contains wiring information for Umkehrwalze A and for the other two reflectors known to Bletchley Park at that time: Umkehrwalzen B and C. Information has been added to the original that differs in both handwriting and ink color; it lists the first wiring encountered for Umkehrwalze D and therefore cannot have been appended earlier than January, 1944.
9. Mahon, A. P. 1945. The History of Hut Eight 1939 - 1945. NARA College Park, Maryland, Record Group 457, Historic Cryptographic Collection, Box 1424, NR 4685, Chapters VI, X, and XI.
10. Rejewski, Marian. 1980. How the Polish Mathematicians Broke Enigma. Reprinted as Appendix D in: Enigma. Wladyslaw Kozaczuk. 1984. University Publications of America.
11. Turing, Alan M. 1940. Turing’s Treatise on Enigma. NARA College Park, Maryland, Record Group 457, Historic Cryptographic Collection, Box 201, NR 964. This document is being edited by Frode Weierud, Ralph Erskine, and Philip Marks for publication on Frode Weierud’s website. Several chapters have been published already, and the relevant URL is: http://home.cern.ch/~frode/crypto/
12. Welchman, Gordon. 1982. The Hut Six Story: Breaking the Enigma Codes. Allen Lane (also published in the USA by McGraw Hill, and reprinted in 1997 by M & M Baldwin, Kidderminster, UK). Chapter 6.