The United States' National Security Agency (NSA), an intelligence agency of the federal government, publishes many documents on the history and technology of cryptology, cryptography, and cryptanalysis through various publications.
- Cryptolog is published monthly by PI, Techniques and Standards, for the Personnel of Operations. Declassified issues are available online.[1]
- The Cryptologic Almanac is a cryptology academic journal published internally by the NSA.[2] It publishes short vignettes about NSA or NSA-related topics. A selection of articles published are available to the public online.[3]
- Cryptologic Quarterly was the combined result of the merger of NSA Technical Journal and Cryptologic Spectrum in 1981. It expanded its coverage to cover a larger segment of NSA readership.
- Cryptologic Spectrum was a cryptology journal published internally by the NSA.[2] It was established in 1969, until consolidation with the NSA Technical Journal in 1981. A selection of articles published between 1969 and 1981 are available to the public online.[3] The journal had been classified until its tables of contents were published online in September 2006 following a Freedom of Information Act request in 2003.[4]
- The NSA Technical Journal was established in 1954 by Ralph J. Canine to "foster the exchange of ideas and create an 'intellectual community' within the Agency".[5] In 1981, the publication was consolidated with Cryptologic Spectrum into a single publication, called Cryptologic Quarterly.