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Cryptologic History

Every little bit helps the NCF to influence the cryptologic future by sharing our educational resources, stimulating new knowledge, and commemorating our heritage.

"On This Date in Cryptologic History" Calendar

Learn about a wide variety of historical events related to cryptology, computers, math, cybersecurity, Intelligence, and more.

September 2028

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S M T W T F S
27 28 29 30 Aug 31 Sep 1 2
1983: KAL 007 Shot Down
1918: Hudson Field Code
1939: Army's SIS Translates PURPLE
1945: Japanese Surrender Event
1943: First Bombe to Nebraska Ave.
1997: National Vigilance Park Dedicated
1958: C-130 Shot Down
3 4 5 6 7 8 9
1968: "Star Trek: The Enterprise Incident"
1941: Winston Churchill Visited Bletchley Park
1983: Inventor Boris Hagelin Died.
1947: Grace Hopper & the First Computer "Bug"
10 11 12 13 14 15 16
1877: Frank Moorman (AEF Radio Intel) was born.
2001: al-Qaeda Attacks in U.S.
1918: U.S. Offensive on the Saint-Mihiel
1945: Signal Security Agency becomes ASA
1971: Cryptologic Pioneer Agnes Driscoll Died
1940: Army & Navy Joint Exploitation of PURPLE
1946: Elizebeth Friedman departs the U.S. Coast Guard.
1994: Death of Charles Tevis - first DEFSMAC director
17 18 19 20 21 22 23
1967: David Kahn's book, "The Codebreakers" was published.
1947: USAF Established
1956: First Civilian NSA Deputy Director Joseph Ream
1983: Three Inventors Receive Patent for Encryption Algorithm RSA
1780: Treasonous Ciphered Letter
1892: Birth of Philip Johnston - whose idea to use the Navajo language as a code during WWII would save countless lives.
24 25 26 27 28 29 Sep 30
1891: American Cryptologic Pioneer William Friedman Born
1918: "Colorado" Field Code Issued
1967: First Vice-Presidential Visit to NSA
1940: Purple Analog #1 Started Decryption
1978: Fort Meade Protective Service
1924: Edward Hebern Received Patent
1807: Alfred Vail, Telegraph Co-Inventor Born
1953: Frank Moorman Died
Friday, September 1, 2028
Saturday, September 2, 2028
Monday, September 4, 2028
Wednesday, September 6, 2028
Thursday, September 7, 2028
Saturday, September 9, 2028
Sunday, September 10, 2028
Monday, September 11, 2028
Tuesday, September 12, 2028
Friday, September 15, 2028
Saturday, September 16, 2028
Sunday, September 17, 2028
Monday, September 18, 2028
Tuesday, September 19, 2028
Wednesday, September 20, 2028
Saturday, September 23, 2028
Sunday, September 24, 2028
Monday, September 25, 2028
Tuesday, September 26, 2028
Wednesday, September 27, 2028
Friday, September 29, 2028
Saturday, September 30, 2028

Learn About the Pioneers

Learn about the various individuals and groups who paved the way in the field of cryptology, cyber, computers, and more.