... Description of document: A History of U.S. Communications Security (Volumes I and II); ... ...: 23-December-2007 Released date: 10-December-2008 Posted date: 24-December-2008 Source of document: National Security Agency Attn: FOIA/PA ... ...Ft. George G. Meade, MD 20755-6248 Phone: (301)-688-6527 Fax: (443)-479-3612 Note: The meat of the material left after redaction starts at (PDF) ... ... facts about that supposition. You've aUlleen the security ~&veats asserting that .Ithe enemy is listening", "the walls have ears", and the lib. ODe o... ...r on-there are some important limitations on our technology. We don't have that secure two-way "'list radio, for example. In talking of our objectives... ...ised many a gloriously im­ practical system and was confused and dismayed when these magnificent products were some· times rejected in favor of some c... ...of them. Let's look at a couple of codes: 1. The simplest kind, called a "one-part code", simply lists the plaintext meanings alphabeti­ cally (so tha... ...oritbm and two public symposia were held by NBS to discuss the merits of the winnina lubmission (IBM's). A smaU storm of controversy erupted when some... ...ourasc priWlte enterprise, to maximize commercial markets at home and abroad, and to exploit the products of our own Industry for use in Government ra...

...This publication consists of a series of lectures prepared and given to interns and other employees by Mr. David G. Boak in 1966. Mr. Boak is uniquely qualified to discuss the history of the US COM_SEC because he has participated significantly in most...