A DIRGram, also known as a Director's Memorandum, is a formal communication issued by the Director of the National Security…
This book is intended to be a general overview of U.S. government cryptology since the end of World War II.…
PURPOSE: To forward to the Intelligence Oversight Board (IOB) of the President's Foreign Intelligence Advisory Board, via the Assistant to…
On July 17, 1984, Lieutenant General Lincoln D. Faurer, the Director of the National Security Agency, asked the National Cryptologic…
In 2016, Dr. Deborah Frincke, Director, NSA/CSS Research Directorate, created this Top Secret PowerPoint presentation about "research initiates" within the…
SIDtoday is the internal newsletter for the NSA’s Signals Intelligence Directorate. Below, you will find issue released via the FOIA…
This paper presents evidence of a visual astronomical computer which would have enabled Maya astronomer-priests to accomplish complex astronomical calculations…
Background From the document: "The digital revolution has clearly placed the National Security Agency/Central Security Service (NSA /CSS) in a…
Background In the beginning of 2016, I requested under the Freedom of Information Act (FOIA) and printout of documents listed…
Background Cryptolog was created in 1974 and was, according to the editor, “a new vehicle for the interchange of ideas…