F. Weierud

Publications26
h-index7
Citations134
Highly Influential Citations9
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Enigma Variations: an Extended Family of Machines
TLDR
The paper shows that the Enigma was not one machine, but rather a family of machines built upon the principle of wired rotors with a fixed or rotatable reflector. Expand
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THE LHC RF SYSTEM - EXPERIENCE WITH BEAM OPERATION
The LHC RF system commissioning with beam and physics operation for 2010 and 2011 are presented. It became clear in early 2010 that RF noise was not a lifetime limiting factor: the crossing of the… Expand
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PURPLE REVEALED: SIMULATION AND COMPUTER-AIDED CRYPTANALYSIS OF ANGOOKI TAIPU B
TLDR
PURPLE was the designation given by U. S. cryptanalysts to the cipher machine used by the Japanese Foreign Office for secure communications before and during WW 2. Expand
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Modern breaking of Enigma ciphertexts
TLDR
The ciphertext-only attack on Enigma messages is improved, especially on genuine ones with short lengths and/or many garbles. Expand
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First Beam Commissioning of the 400 MHz LHC RF System
Hardware commissioning of the LHC RF system was successfully completed in time for first beams in LHC in September 2008. All cavities were conditioned to nominal field, power systems tested and all… Expand
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Hardware and Initial Beam Commissioning of the LHC RF Systems
Author(s): M.E. Angoletta, L. Arnaudon, P. Baudrenghien, T. Bohl, O. Brunner, A. Butterworth, E. Ciapala, F. Dubouchet, J. Ferreira-Bento, D. Glenat, G. Hagmann, W. Hofle, C. Julie, F. Killing, G.… Expand
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German mathematicians and cryptology in WWII
TLDR
We identify the most important mathematicians who worked in the different German cryptologic organizations during the war: who they were, how they were recruited, which organizations they were in, and what they did (when this is known). Expand
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BREAKING GERMAN ARMY CIPHERS
TLDR
We present an account of a ciphertext-only cryptanalysis of a large number of encrypted German Army radio messages, from 1941 and 1945, have survived the end of the Second World War to the present day. Expand
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Naval Enigma: M4 and its Rotors
TLDR
The wiring of rotors in the naval version of Enigma is given (including that of beta and gamma) and events leading to the introduction of Triton, a cipher for Atlantic U-boats, are described. Expand
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The Geheimschreiber Secret
The present paper appears under joint authorship, however, the responsibilities of the two authors are divided and well defined. Lars Ulfving is the sole author of the original Swedish version of The… Expand
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