Cryptography organizations

measurement standards laboratory in the United States

WWII code-breaking site and British country house, and museum, United Kingdom

Government Communications Headquarters (GCHQ) is an intelligence and security organisation responsible for providing signals intelligence (SIGINT) and information assurance (IA) to the government and armed forces of the United Kingdom. Primarily based at The Doughnut in the suburbs of Cheltenham, GCHQ is the responsibility of the country's Secretary of State for Foreign and Commonwealth Affairs (Foreign Secretary), but it is not a part of the Foreign Office and its director ranks as a Permanent Secretary.

WWII US special military intelligence

national cryptologic agency of the Government of Canada

CAcert.org is a community-driven certificate authority that issues free X.509 public key certificates. CAcert.org relies heavily on automation and therefore issues only Domain-validated certificates (and not Extended validation or Organization Validation certificates).

American computer and network security company

cryptanalysis department

interwar Polish-intelligence cryptology agency

Swedish signals intelligence agency

FAPSI () or Federal Agency of Government Communications and Information (FAGCI) () was a Russian government agency, which was responsible for signal intelligence and security of governmental communications.

United States government agency

Australian signals intelligence agency

museum in Maryland

government agency

section in the Government Code and Cypher School at Bletchley Park

peacetime cryptanalytic organization of the United States

codebreaking division of the United States Army during WW2

The B-Dienst (, observation service), also called 'xB-Dienst, X-B-Dienst and χB-Dienst''''', was a Department of the German Naval Intelligence Service (, MND III) of the OKM that dealt with the interception and recording, decoding and analysis of the enemy. In particular, it focused on British radio communications before and during World War II. B-Dienst worked on cryptanalysis and deciphering (decrypting) of enemy and neutral states' message traffic and security control of Kriegsmarine key processes and machinery.

secret evacuation of Finnish signals intelligence establishment to Sweden, 1944

signals intelligence and cryptanalytic agency of the German Nazi Party

role of women in World War II British code breaking

American non-profit organization devoted to the hobby of cryptography

non-profit scientific organization whose purpose is to further research in cryptology and related fields

MI8, or Military Intelligence, Section 8 was a British Military Intelligence group responsible for signals intelligence and was created in 1914. It originally consisted of four sections: MI8(a), which dealt with wireless policy; MI8(b), based at the General Post Office, dealt with commercial and trade cables; MI8(c) dealt with the distribution of intelligence derived from censorship; and MI8(d), which liaised with the cable companies. During World War I MI8 officers were posted to the cable terminals at Poldhu Point and Mullion in Cornwall and Clifden in County Galway, continued until 1917 whe

MI1 or British Military Intelligence, Section 1 was a department of the British Directorate of Military Intelligence, part of the War Office. It was set up during World War I. It contained "C&C", which was responsible for code breaking.

WWII signals–intelligence stations near Paris