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The Flossenburg Messages and The Murder of General Rabenau
Breaking German Wehrmacht Ciphers
The Lorenz Schlüsselzusatz SZ42
The Enigma Collection
Enigma Development and Production History
Wehrmacht Manual Ciphers
Rotor Machines and Wired Wheels
Modern breaking of Enigma ciphertexts
The Biafran Ciphers
Scharnhorst’s Last Message?
The Kryha Machine
The Research Corner

Don’t forget to visit my Blog CryptoCellar Tales. That is where I present the latest news, new ideas or work, and other more dynamic content. Contact information and feedback

The Alexander Papers

• Documents by C.H.O’D. Alexander
• A Tribute to Hugh Alexander

Turing’s Treatise on Enigma

• Turing’s Treatise on Enigma Preliminary Version
• Chapter 4 released on 9 May 2000.
• Joseph Desch, Alan Turing and the US Bombes
• To learn more about Alan Turing visit The Alan Turing Home Page

Historical Papers

• Translation of Lars Ulfving’s paper on Swedish Codebreaking
• Bletchley Park’s Sturgeon, The FISH That Laid No Eggs
  by Frode Weierud, The Rutherford Journal, Vol. 1, Dec. 2005
• Professor William T. Tutte’s paper on FISH
• The General Report on Tunny on Alan Turing.net
• PURPLE History — “Preliminary Historical Report On the Solution of the “B” Machine”
  by William F. Friedman
• “The Origins of the National Security Agency, 1940 – 1952” by Thomas L. Burns
• “The Quest for Cryptologic Centralization and the Establishment of NSA:1940 – 1952"
  by Thomas L. Burns. Public and redacted version of study above.
• European Axis Signal Intelligence in World War II
  As Revealed by “TICOM” Investigations and by Other Prisoner of War Interrogations and
  Captured Material, Principally German. In Nine Volumes. Chief, Army Security Agency,
  1 May 1946, WDGAS-14.
• “The Gulf of Tonkin” Documents Released by NSA
• Studies on Cryptology, NSA, Record Group 457,
  Records of the National Security Agency.
• Document SRH-006: “Synthesis of Experiences in the Use of Ultra Intelligence
  by U.S. Army Field Commands in the European Theatre of Operations”
• Document SRH-142: “Ultra and the Campaign Against the U-Boats in World War II”
• The Korean War: The SIGINT Background
  by David A. Hatch with Robert Louis Benson, NSA
• SIGSALY Secure Digital Voice Communications in World War II
• The Invisible Cryptologists: African-Americans, WWII to 1956
• NSA Monographs and Other Historical Documents
• German Cipher Machines of World War II by David Mowry, NSA
• Securing Record Communications: The TSEC/KW-26 by Melville Klein, NSA
• Eavesdropping on Hell: Historical Guide to Western Communications
  Intelligence and the Holocaust, 1939 – 1945 by Robert J. Hanyok, NSA
• Spartans in Darkness: American SIGINT and the Indochina War, 1945 – 1975
  by Robert J. Hanyok, Center for Cryptologic History, NSA, 2002
• American Cryptology during the Cold War, 1945 – 1989,
  by Thomas R. Johnson, NSA Cryptologic History Series VI, 1995
• Book I: The Struggle for Centralization, 1945 – 1960
• Book II: Centralization Wins, 1960 – 1972
• Book III: Retrenchment and Reform, 1972 – 1980
• Book IV: Cryptologic Rebirth, 1981 – 1989
• A Few NSA Monographs from the Pacific Theatre in WW II
• Pearl Harbor Revisited: United States Navy Communications Intelligence 1924 – 1941
• A Priceless Advantage: U.S. Navy Communications Intelligence and the Battles of
  Coral Sea, Midway, and the Aleutians
• The William F. Friedman Collection (A Cryptological Gold Mine. Start digging!)
• NSA Bibliographies
      (The Memory Hole Web Site was closed in 2009. I therefore provide local copies here.)
  
• Cryptologic Quarterly Index (Spring 1982 – Winter 1996)
• NSA Technical Journal Cumulative Index (April 1956 – Fall 1980)
• Cryptologic Spectrum Index (1969 – 1981)
• Cryptologic Almanac Index (Jan/Feb 2002 – Apr/Jun 2003)
• Center for Cryptologic History Publications
• Documents published by Tony Sale
• BP’s Cryptographic Dictionary
• The Newmanry History Part of the General Report on Tunny
• The Special FISH Report by Albert W. Small (Dec. 1944)
• Captain Walter J. Fried’s Fish Reports

Cryptology Papers and Thesis

• The Applications of Genetic Algorithms in Cryptanalysis
• The History of Non-Secret Encryption by J. H. Ellis, CESG, UK (Local copy)
• The Possibility of Secure Non-Secret Digital Encryption by J. H. Ellis, CESG, UK (Local copy)
• A Note on ‘Non-Secret Encryption’ by C.C. Cocks, CESG, UK (Local copy)
• Non-Secret Encryption Using a Finite Field by M. J. Williamson, CESG, UK (Local copy)
• Thoughts on Cheaper Non-Secret Encryption by M. J. Williamson, CESG, UK (Local copy)
• NSA Documents on Non-Secret Encryption
• Frode’s Publications

Software and Simulations

• Crypto Simulation Group   ( “Enigma Variations”, Cryptologia, July 1998)
• CSG Cipher Machine Simulators for Windows
• CSG PURPLE Simulator for Windows
• CSG Hagelin CD57 Simulator for Windows
• CSG Sigaba (ECM Mark II) Simulator for Windows
• CSG Siemens T52d Simulator for Windows
• Dirk Rijmenants’ Cipher Classics Tool for Windows
• Dirk Rijmenants’ Enigma Simulator
• Dirk Rijmenants’ M-209 Simulator
• Dirk Rijmenants’ Hagelin BC-52 Simulator
• Dirk Rijmenants’ U.S. TSEC/KL-7 Simulator
• Listen to A Real Bombe Running (Audio Recoding by BBC/Radio 4)
• ACA’s Crypto Drop Box

Historical Cipher Machines

• The Electronic Cipher Machine (ECM) Mark II
• The SIGABA / ECM II Cipher Machine: “A Beautiful Idea”
  by Timothy J. Mucklow, NSA, 2015
• FIALKA — The Russian Rotor Machines M-125
• Paul Reuvers’s FIALKA Site. Detailed explanations.
• FIALKA — As Described by a Former DDR Cipher Operator (In German)
• The Main Page — Der SAS- und Chiffrierdienst ( SCD ) (In German)
• Jerry Proc’s Crypto Machine Page
• The KL7 Off-Line Crypto Unit
• The KWR37 On-Line Crypto Receiver
• Dirk Rijmenants’ U.S. TSEC/KL-7 ADONIS & POLLUX Page
  (This an outstanding description of the KL-7)
• The Story of The Abwehr Enigma G-312
• The SIGABA Manual (ECM Mark 2 and CCM Mark 1)
• The Kryha Machine

Dictionaries and Glossaries

• Confused by Acronyms?
  DOD Dictionary of Military Terms  (PDF version below)
• Dictionary of Military and Associated Terms
  (DOD Joint Publication 1-02, 15 Nov. 2015)
• NATO Glossary of Terms and Definitions (English and French)
  (NATO, AAP-6, 2014)
• NATO Glossary of Abbreviations Used in NATO Documents and Publications
  (NATO, AAP-15, 2013)
• The Bletchley Park Cryptographic Dictionary (1944)
• Ritter’s Crypto Glossary and Dictionary of Technical Cryptography

Kid’s Corner

• National Security Agency’s CryptoKids Page (USA)
• GCHQ’s Support for Education (UK)
• Secret Code Breaker, Cryptography for All Ages (USA)

Bits and Pieces

•   The CrypTool Portal —
  The Hands-On Cryptology Site, Learn by Doing.
•   CrypTool 2 —
  The Swiss Army Knife of Cryptology.
•   Visit Bletchley Park  A Guided Tour with Tony Sale
•   Tony Sale’s Codes and Ciphers Page
•   The National Museum of Computing —
  The home of Colossus and the Turing-Welchman Bombe.
•   TNMOC — Colossus
•   TNMOC — The Turing-Welchman Bombe
•   The Original Bombe Rebuild Project
•   Inauguration of The Bombe Rebuild Project
                                (Audio Recoding by BBC/Radio 4 – needs RealPlayer)
•   The Enigma and the Bombe
•   Bengt Beckman, 
  Codebreakers: Arne Beurling and the Swedish Crypto Program during World War II
  Read my review of the Swedish edition: Sweden, Cryptographic Superpower
•   Michael Smith and Ralph Erskine (eds.),
  Action This Day: Bletchley Park from the breaking of the Enigma Code
  to the birth of the modern computer
      List of Contents
• B. Jack Copeland (Editor),
  The Essential Turing: Classic Writings on Minds and Computers
  Read a sample chapter; Jack Copeland on Enigma
• B. Jack Copeland (Editor),
  Colossus: The Secrets of Bletchley Park’s code-breaking computers
  Or read about it online:
  Colossus: The First Large Scale Electronic Computer
• Paul Gannon,
  Colossus: Bletchley Park’s Greatest Secret
•   Secret Code Breaker Online
  Cryptography for All Ages, Age 8 and Up
•   The Cipher Challenge Cracked
  Swedish Codebreakers still show their excellence,
  “How we Cracked the Code Book Ciphers”
  or read the HTML Version
•   Index to Intelligence and National Security
•   Index to International Journal of Intelligence and CounterIntelligence
• Want to be a Cryptanalyst? Take DSD’s “Aptitude Test”.
• Cryptology Books by Randall K. Nichols (LANAKI)
  Former President of The American Cryptogram Association:
• The ICSA Guide To Cryptography and Commercial Computer Security Systems
• Classical Cryptography Course Volume I
• Classical Cryptography Course Volume II
• Coding Theory and Cryptography:
  From Enigma and Geheimschreiber to Quantum Theory
  The proceedings of the Conference on Coding Theory, Cryptography, and Number Theory
  held at the U.S. Naval Academy during October 25-26, 1998.
  List of Contents in PDF Format

Crypto Links

• Crypto News — JYA Cryptome
• Crypto Blogs
• Secrecy News Blog
• Bruce Schneier’s Schneier on Security Blog
• Historical Interests
• Academic Study Groups
• The Archives and Other Resources
• Government Agencies
• Commercial Crypto
• Crypto Publications
• History Publications
• Cryptological Societies
• Military Signal Intelligence Units
• Information Warfare

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