Welcome to the National Cryptologic Foundation. We strive to influence the cryptologic future by sharing our educational resources, stimulating new knowledge, and commemorating our heritage. The Foundation also provides needed support for the National Cryptologic Museum (NCM).

  • ...The nation’s brightest young minds to consider careers in STEM and cyber related fields

  • ...Robust dialog with the American public on cyber policy, technology, and privacy

  • ...Those who “served in silence” with valor and distinction, especially those who gave their lives in service

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Polish mathematicians & code breakers made the first breakthroughs against Nazi Germany's Enigma code.......

1929: Cipher Bureau Closed.

Sunday, October 31, 2021

31 October 1929: The Cipher Bureau ("Black Chamber") headed by Herbert O. Yardley closed. Read about the Black Chamber in the NSA article: "Pearl Harbor Review: The Black Chamber" - via the link at the end of the page.

After the organization disbanded, Yardley caused a sensation in 1931 with the publication of his memoirs of MI-8, "The American Black Chamber." In this book, Yardley revealed the extent of U.S. cryptanalytic work in the 1920s. Surprisingly, the wording of the espionage laws at that time did not permit prosecution of Yardley. (This situation was changed two years later with a new law imposing stiff penalties for unauthorized revelations of cryptologic secrets.) In a 1952 letter, William Friedman, a contemporary of Yardley, suggested, "In reading Yardley I recommend ingestion of liberal dozes of sodium chloride." (i.e., Take it with more than a grain of salt.)

Yardley did some cryptologic work for Canada and China during World War II, but he was never again given a position of trust in the U.S. government.

Read more about Herbert O. Yardley in "The Many Lives of Herbert O. Yardley on the NSA.gov site via the link below.

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About Us

The NCF's Vision is to Influence the cryptologic future by sharing our educational resources, stimulating new knowledge, and commemorating our heritage.

The Foundation provides exceptional cryptologic programs throughout the year, encourages young minds to explore cryptology and cyber education and careers,  hosts educational, cryptology-related exhibits at various community events, and honors the people— past, present, and future—whose contributions to our national security protect and make possible our way of life.

The NCF also provides needed support to the National Cryptologic Museum (NCM), the first public museum in the U.S. Intelligence Community. Located adjacent to the National Security Agency (NSA) in Maryland, the NCM houses a unique and priceless collection of artifacts that represent our Nation's history in code making and code breaking, as well as a world class library of cryptologic media. The NCF acquires the best artifacts for the Museum and supports new educational and interactive exhibits.

As part of the Foundation's partnership with NSA to build the Cyber Center for Education and Innovation - Home of the National Cryptologic Museum (CCEI-NCM), the NCF also serves as a leader in the field of cybersecurity - striving to provide the best in educational resources and programs.

The NCF has a three-part mission to Educate, Stimulate, and Commemorate. Learn more about our MISSION.