[Cryptography] ADDITIONAL COMSEC HISTORY DECLASSIFIED UPDATED: A History of U.S. Communication

[Dave Horsfall]

Apologies if this has been mentioned before...

-- 
Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."

---------- Forwarded message ----------
Subject: [GreenKeys] ADDITIONAL COMSEC HISTORY DECLASSIFIED UPDATED: A History
    of U.S. Communication

from another list.....
 
ADDITIONAL COMSEC HISTORY DECLASSIFIED

UPDATED: A History of U.S. Communications Security (Volumes I and II); the
David G. Boak Lectures, National Security Agency (NSA), 1973. Released
through ISCAP - PDF 11.5 MB

The Interagency Security Classification Appeals Panel or ISCAP has decided
to declassify additional material from the History of U.S. Communication
Security, Volumes I and II. The newly declassified version released in
October 2015 is presented first, after which is the more redacted version
that was released in December 2008, for comparison purposes.

http://www.governmentattic.org/18docs/Hist_US_COMSEC_Boak_NSA_1973u.pdf

or

http://tinyurl.com/ottap3y