Cryptome DVDs are offered by Cryptome. Donate $25 for two DVDs of the Cryptome 12-years collection of 46,000 files from June 1996 to June 2008 (~6.7 GB). Click Paypal or mail check/MO made out to John Young, 251 West 89th Street, New York, NY 10024. The collection includes all files of,,, and, and 23,000 pages of counter-intelligence dossiers declassified by the US Army Information and Security Command, dating from 1945 to 1985.The DVDs will be sent anywhere worldwide without extra cost.

30 August 2008

Scanned from hardcopy.

Articles on the Secure Data Network System

The Secure Data Network System: An Overview
Gary L. Tater
Edmund G. Terut


In August 1986, the National Security Agency, the National Bureau of Standards, the Defense Communications Agency, and twelve communications and computer corporations initiated a special project called the Secure Data Network System (SDNS). This innovative research program focuses on designing the next generation of secure computer communications network and product specifications to be implemented for applications with public and private data networks. This paper will address the rationale and programmatic decisions for the SDNS project. The next four papers cover the details of the actual architecture, services, protocols, and products.

SDNS Products in the Type II Environment
John Linn
BBN Communications Corporation
Cambridge, Massachusetts

SDNS Services and Architecture
Ruth Nelson
Electronic Defense Communications Directorate
GTE Government Systems Corporation
77 A Street
Needham, MA 02194

SP4: A Transport Encapsulation Security Protocol
Dennis Branstad, National Bureau of Standards
Joy Dorman, Digital Equipment Corporation
Russell Housley, Xerox Corporation
James Randall, Internation Business Machines Corporation

Access Control Withing SDNS
Edward R. Sheehan
Analytics Incorporated
9821 Broken Land Parkway
Columbia, Maryland 21046 (Zipped PDF, 22pp, 5.3MB)