Bletchley Park and Our Talk on Motorsport 1894 -1939
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How I Learned to Stop Worrying and Love the Bombe: Machine Research and Development and Bletchley Park
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by CURVE/open How I learned to stop worrying and love the Bombe: Machine Research and Development and Bletchley Park Smith, C Author post-print (accepted) deposited by Coventry University’s Repository Original citation & hyperlink: Smith, C 2014, 'How I learned to stop worrying and love the Bombe: Machine Research and Development and Bletchley Park' History of Science, vol 52, no. 2, pp. 200-222 https://dx.doi.org/10.1177/0073275314529861 DOI 10.1177/0073275314529861 ISSN 0073-2753 ESSN 1753-8564 Publisher: Sage Publications Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders. This document is the author’s post-print version, incorporating any revisions agreed during the peer-review process. Some differences between the published version and this version may remain and you are advised to consult the published version if you wish to cite from it. Mechanising the Information War – Machine Research and Development and Bletchley Park Christopher Smith Abstract The Bombe machine was a key device in the cryptanalysis of the ciphers created by the machine system widely employed by the Axis powers during the Second World War – Enigma. -
Code Breaking at Bletchley Park
Middle School Scholars’ CONTENTS Newsletter A Short History of Bletchley Park by Alex Lent Term 2020 Mapplebeck… p2-3 Alan Turing: A Profile by Sam Ramsey… Code Breaking at p4-6 Bletchley Park’s Role in World War II by Bletchley Park Harry Martin… p6-8 Review: Bletchley Park Museum by Joseph Conway… p9-10 The Women of Bletchley Park by Sammy Jarvis… p10-12 Bill Tutte: The Unsung Codebreaker by Archie Leishman… p12-14 A Very Short Introduction to Bletchley Park by Sam Corbett… p15-16 The Impact of Bletchley Park on Today’s World by Toby Pinnington… p17-18 Introduction A Beginner’s Guide to the Bombe by Luca “A gifted and distinguished boy, whose future Zurek… p19-21 career we shall watch with much interest.” This was the parting remark of Alan Turing’s Headmaster in his last school report. Little The German Equivalent of Bletchley could he have known what Turing would go on Park by Rupert Matthews… 21-22 to achieve alongside the other talented codebreakers of World War II at Bletchley Park. Covering Up Bletchley Park: Operation Our trip with the third year academic scholars Boniface by Philip Kimber… p23-25 this term explored the central role this site near Milton Keynes played in winning a war. 1 intercept stations. During the war, Bletchley A Short History of Bletchley Park Park had many cover names, which included by Alex Mapplebeck “B.P.”, “Station X” and the “Government Communications Headquarters”. The first mention of Bletchley Park in records is in the Domesday Book, where it is part of the Manor of Eaton. -
Friedman-Zimmermann-Transcript.Pdf
Date of Speech: September 1958 Speaker: William F. Friedman Location of Speech: NSA, Friedman Auditorium, Fort George G. Meade, MD Introduction: Dr. Abraham Sinkov Note: Friedman‟s Lecture on the Zimmermann Telegram at the Semiannual Meeting of Crypto-Mathematics Institute, September 1958. Sinkov: Ladies and gentlemen the Crypto-Mathematics Institute is now a half year old. As you will have seen from your program notices, we have planned a special semiannual meeting. As the main item of this meeting we have especially good fortune to have a talk by Mr. Friedman. Mr. Friedman certainly needs no introduction to this audience. He has been a highly important part of the U.S. cryptologic effort for over 40 years. In fact, during a good portion of that period, he personally was the U.S. cryptologic effort. ((Audience chuckles.)) He retired from full time association with the National Security Agency about two years ago, but has continued quite active. In particular, he and Mrs. Friedman recently published a scholarly study of the various attempts made to prove, by cipher methods, that the Shakespearean plays had been written by other people than William Shakespeare. The book has gained for the Friedmans world wide acclaim. The subject that Mr. Friedman has chosen for today‟s talk was announced as the “Zimmermann Telegram.” When I saw Mr. Friedman last, a few days ago, he expressed to me some regret that we had made any announcement of a subject title. The reason, I gathered, was that he has a rather interesting turn to the manner in which he is going to announce the subject of his talk. -
Churchill's Diplomatic Eavesdropping and Secret Signals Intelligence As
CHURCHILL’S DIPLOMATIC EAVESDROPPING AND SECRET SIGNALS INTELLIGENCE AS AN INSTRUMENT OF BRITISH FOREIGN POLICY, 1941-1944: THE CASE OF TURKEY Submitted for the Degree of Ph.D. Department of History University College London by ROBIN DENNISTON M.A. (Oxon) M.Sc. (Edin) ProQuest Number: 10106668 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. uest. ProQuest 10106668 Published by ProQuest LLC(2016). Copyright of the Dissertation is held by the Author. All rights reserved. This work is protected against unauthorized copying under Title 17, United States Code. Microform Edition © ProQuest LLC. ProQuest LLC 789 East Eisenhower Parkway P.O. Box 1346 Ann Arbor, Ml 48106-1346 2 ABSTRACT Churchill's interest in secret signals intelligence (sigint) is now common knowledge, but his use of intercepted diplomatic telegrams (bjs) in World War Two has only become apparent with the release in 1994 of his regular supply of Ultra, the DIR/C Archive. Churchill proves to have been a voracious reader of diplomatic intercepts from 1941-44, and used them as part of his communication with the Foreign Office. This thesis establishes the value of these intercepts (particularly those Turkey- sourced) in supplying Churchill and the Foreign Office with authentic information on neutrals' response to the war in Europe, and analyses the way Churchill used them. -
1 British Signals Intelligence and the 1916 Easter Rising in Ireland ABSTRACT Historians for Decades Have Placed Room 40, the Fi
British Signals Intelligence and the 1916 Easter Rising in Ireland ABSTRACT Historians for decades have placed Room 40, the First World War British naval signals intelligence organization, at the centre of narratives about the British anticipation of and response to the Easter Rising in Ireland in 1916. A series of crucial decrypts of telegrams between the German embassy in Washington and Berlin, it has been believed, provided significant advance intelligence about the Rising before it took place. This article upends previous accounts by demonstrating that Room 40 possessed far less advance knowledge about the Rising than has been believed, with most of the supposedly key decrypts not being generated until months after the Rising had taken place. INTRODUCTION A key moment in twentieth century Irish history, on Easter Monday 1916 a group of rebels launched in Dublin an uprising against British rule. Carefully prepared in advance, the Irish rebels had previously sought German assistance in providing arms and in organizing transport for famed Irish nationalist Roger Casement. The Germans agreed to provide this assistance, dispatching Casement aboard a German submarine and organizing a covert landing of munitions aboard a merchant ship masquerading as the Norwegian steamer Aud. The arms, however, were intercepted and Casement captured by the British authorities. Notwithstanding these reverses, the uprising went forward shortly thereafter on Easter Monday, 24 April 1916. Though apparently catching the British authorities in Ireland by surprise, the uprising was put down by the British in a violent crackdown. For decades, signals intelligence has been treated as the linchpin in our understanding of the British anticipation of and response to these events. -
Zimmermann Telegram: the Original Draft
Cryptologia, 31:2–37, 2007 Copyright Taylor & Francis Group, LLC ISSN: 0161-1194 print DOI: 10.1080/01611190600921165 Zimmermann Telegram: The Original Draft JOACHIM VON ZUR GATHEN Abstract This article presents the original draft of the Zimmermann telegram poses. These works may not bemission posted of elsewhere the without copyright the holder. explicit (Last written update per- 2014/01/29-17 :42.) from 1917 in facsimile. Its various annotations provide interesting insights, such as the idea to promise California to Japan and instructions concerning trans- mission and encryption. Further documents clarify how the telegram was sent and put various alternatives suggested in the literature to rest. The political back- ground and fallout in Germany are discussed, as well. Keywords codebook, cryptanalysis, First World War, Room 40, Zimmermann telegram 1. Introduction (1), 2–37. URL No single event decided the outcome of the First World War 1914–1918. But the 31 entry of the United States as a belligerent—after long hesitation—played a major ing any of theseeach documents will copyright adhere holder, to and the in terms particular and use constraints them invoked only by for noncommercial pur- role in the success of the Entente, originally led by France and Great Britain. And the (in)famous telegram discussed in this article played a role in changing the anti- Cryptologia war attitude in large parts of the US population and giving President Thomas Woodrow Wilson the popular and political majority for entry into the war on the side of the Entente, clenching its victory. David Kahn has called the cryptanalytic solution the greatest intelligence coup of all time [27, p. -
Gendering Decryption - Decrypting Gender
1 Gendering decryption - decrypting gender The gender discourse of labour at Bletchley Park 1939-1945 Photograph taken from Smith 2011. Spring 2013 MA thesis (30 hp) Author: Annie Burman Supervisor: Mikael Byström Seminar leader: Torkel Jansson Date of seminar: 4 June 2013 2 Abstract Ever since the British efforts to break Axis codes and ciphers during the Second World War were declassified in the 1970s, the subject of Government Code and Cipher School, the organisation responsible, Bletchley Park, its wartime headquarters, and the impact of the intelligence on the war has fascinated both historians and the general public. However, little attention has been paid to Bletchley Park as a war station where three-quarters of the personnel was female. The purpose of this thesis is to explore the gender discourse of labour at Bletchley Park and how it relates to the wider context of wartime Britain. This is done through the theoretical concepts of gendering (the assignation of a gender to a job, task or object), horizontal gender segregation (the custom of assigning men and women different jobs) and vertical gender segregation (the state where men hold more prestigious positions in the hierarchy than women). The primary sources are interviews, letters and memoirs by female veterans of Bletchley Park, kept in Bletchley Park Trust Archive and the Imperial War Museum’s collections, and printed accounts, in total two monographs and five articles. Surviving official documents from Bletchley Park, now kept in the National Archives, are also utilised. Using accounts created by female veterans themselves as the main source material allows for women’s perspectives to be acknowledged and examined. -
The Enigma Cipher Machine
MTAT.07.006 Research Seminar in Cryptography The Enigma Cipher Machine Kadri Hendla University of Tartu kadri [email protected] Research Seminar in Cryptography, 05.12.2005 The Enigma Cipher Machine, Kadri Hendla 1 Overview • Description of Enigma • Enigma in Use • Cryptanalysis of Enigma Research Seminar in Cryptography, 05.12.2005 The Enigma Cipher Machine, Kadri Hendla 2 History of Enigma • Enigma is most known for its part in World War II. • In 1918 Arthur Scherbius applied for a patent for Enigma. • German military adopted Enigma in 1926. • There were many different versions of Enigma. Research Seminar in Cryptography, 05.12.2005 The Enigma Cipher Machine, Kadri Hendla 3 The Enigma Machine Research Seminar in Cryptography, 05.12.2005 The Enigma Cipher Machine, Kadri Hendla 4 Description of Enigma: Working Principle • Scrambler (3 rotors and a reflector) • Lamps • Keyboard • Plugboard Research Seminar in Cryptography, 05.12.2005 The Enigma Cipher Machine, Kadri Hendla 5 Description of Enigma: Rotors • 1. notched ring • 2. marking dot for ”A” contact • 3. alphabet ring • 4. plate contacts • 5. wire connections • 6. pin contacts • 7. spring-loaded ring adjusting lever • 8. hub • 9. finger wheel • 10. ratchet wheel Research Seminar in Cryptography, 05.12.2005 The Enigma Cipher Machine, Kadri Hendla 6 Description of Enigma: Reflector The reflector gave two important properties to Enigma: • Encryption was the same as decryption. • No letter could be encrypted to itself. Research Seminar in Cryptography, 05.12.2005 The Enigma Cipher Machine, Kadri Hendla -
Jack Copeland on Enigma
Enigma Jack Copeland 1. Turing Joins the Government Code and Cypher School 217 2. The Enigma Machine 220 3. The Polish Contribution, 1932–1940 231 4. The Polish Bomba 235 5. The Bombe and the Spider 246 6. Naval Enigma 257 7. Turing Leaves Enigma 262 1. Turing Joins the Government Code and Cypher School Turing’s personal battle with the Enigma machine began some months before the outbreak of the Second World War.1 At this time there was no more than a handful of people in Britain tackling the problem of Enigma. Turing worked largely in isolation, paying occasional visits to the London oYce of the Government Code and Cypher School (GC & CS) for discussions with Dillwyn Knox.2 In 1937, during the Spanish Civil War, Knox had broken the type of Enigma machine used by the Italian Navy.3 However, the more complicated form of Enigma used by the German military, containing the Steckerbrett or plug-board, was not so easily defeated. On 4 September 1939, the day following Chamberlain’s announcement of war with Germany, Turing took up residence at the new headquarters of the Govern- ment Code and Cypher School, Bletchley Park.4 GC & CS was a tiny organization 1 Letters from Peter Twinn to Copeland (28 Jan. 2001, 21 Feb. 2001). Twinn himself joined the attack on Enigma in February 1939. Turing was placed on Denniston’s ‘emergency list’ (see below) in March 1939, according to ‘StaV and Establishment of G.C.C.S.’ (undated), held in the Public Record OYce: National Archives (PRO), Kew, Richmond, Surrey (document reference HW 3/82). -
Islington U3A Outing to Bletchley Park – Tuesday 11 September 2018 This
Islington U3A Outing to Bletchley Park – Tuesday 11 September 2018 This full day outing was to Bletchley Park on the outskirts of Milton Keynes, a 34 minute train journey from Euston. The group met at Euston mainline station – 29 of us including the three organisers, and on arriving at Bletchley station we walked the very short distance to the Park, and made our way to Block C – the Visitor Centre, where we paid and went into centre. Here there was a café which we took advantage of, and people were able to book a free tour of the site, get a free map with information about the various places and borrow free headphones telling of the history and people connected with Bletchley Park, and where to visit. The people who worked at Bletchley during the war were from many and any walks of life – but they had to be able to complete the Daily Telegraph cryptic crossword in 12 minutes…. and probably have other gifts as well. Some of the people we still hear of now are Dilly Knox, John Jeffreys, Peter Twinn, Alan Turing, Tony Kendrick and Gordon Welchman. The site is large with many different places to see. There are a lake and gardens more or less in the centre (with lots of places for picnics), an original Victorian mansion with some rooms on the ground floor recreated as they were in WW2, some war memorials and many wooden huts. Everything we saw referenced that period of our history. People chose how they were going to see the park – some went on tours, others used the map and headphones, others walked around in small groups looking at places of interest to themselves. -
Zimmermann Telegram: the Original Draft
Cryptologia, 31:2–37, 2007 Copyright Taylor & Francis Group, LLC ISSN: 0161-1194 print DOI: 10.1080/01611190600921165 Zimmermann Telegram: The Original Draft JOACHIM VON ZUR GATHEN Abstract This article presents the original draft of the Zimmermann telegram poses. These works may not bemission posted of elsewhere the without copyright the holder. explicit (Last written update per- 2017/11/29-18 :16.) from 1917 in facsimile. Its various annotations provide interesting insights, such as the idea to promise California to Japan and instructions concerning trans- mission and encryption. Further documents clarify how the telegram was sent and put various alternatives suggested in the literature to rest. The political back- ground and fallout in Germany are discussed, as well. Keywords codebook, cryptanalysis, First World War, Room 40, Zimmermann telegram 1. Introduction (1), 2–37. URL No single event decided the outcome of the First World War 1914–1918. But the 31 entry of the United States as a belligerent—after long hesitation—played a major ing any of theseeach documents will copyright adhere holder, to and the in terms particular and use constraints them invoked only by for noncommercial pur- role in the success of the Entente, originally led by France and Great Britain. And the (in)famous telegram discussed in this article played a role in changing the anti- Cryptologia war attitude in large parts of the US population and giving President Thomas Woodrow Wilson the popular and political majority for entry into the war on the side of the Entente, clenching its victory. David Kahn has called the cryptanalytic solution the greatest intelligence coup of all time [27, p. -
Alan Turing: Life and Legacy of a Great Thinker
Alan Turing: Life and Legacy of a Great Thinker Bearbeitet von Christof Teuscher, D Hofstadter 1st ed. 2003. 2nd printing 2005. Buch. xxviii, 542 S. Hardcover ISBN 978 3 540 20020 8 Format (B x L): 15,5 x 23,5 cm Gewicht: 1116 g Weitere Fachgebiete > EDV, Informatik > EDV, Informatik: Allgemeines, Moderne Kommunikation > EDV & Informatik: Geschichte Zu Inhaltsverzeichnis schnell und portofrei erhältlich bei Die Online-Fachbuchhandlung beck-shop.de ist spezialisiert auf Fachbücher, insbesondere Recht, Steuern und Wirtschaft. Im Sortiment finden Sie alle Medien (Bücher, Zeitschriften, CDs, eBooks, etc.) aller Verlage. Ergänzt wird das Programm durch Services wie Neuerscheinungsdienst oder Zusammenstellungen von Büchern zu Sonderpreisen. Der Shop führt mehr als 8 Millionen Produkte. Alan Turing at Bletchley Park in World War II Tony Sale Ex Museums Director, Bletchley Park, UK Summary. “There should be no question in anyone’s mind that Turing’s work was the biggest factor in Hut 8’s success [in breaking the German Naval Enigma]. In the early days he was the only cryptographer who thought the problem worth tackling and not only was he primarily responsible for the main theoretical work within the hut (particularly the developing of a satisfactory scoring technique for dealing with Banburismus) but he also shared with Welchman and Keen the chief credit for the invention of the Bombe. It is always difficult to say that anyone is absolutely indispensable but if anyone was indispensable to Hut 8it was Turing” [1]. 1 Alan Turing and the Enigma Machine The mathematician Alan Turing had been identified, at Cambridge, as a likely candidate for code breaking.