At 11:54 AM -0500 1/12/01, John Young wrote:
One of the Tempest FOIA docs NSA released recently concerns NONSTOP, a term whose definition is classified as SECRET. About half of the document, NACSEM 5112, "NONSTOP Evaluation Techniques," has been redacted, and we'll publish it soon.
From the clear text, NONSTOP appears to refer to protection against compromising emanations of cryptographic systems, and maybe in particular radio crypto systems.
Another document refers to NONSTOP testing and protection being especially needed on vehicles, planes and ships.
We've been unable to retrieve more than a few words from the redacted portions (by use of xerography to reveal text below the overwrites), and would appreciate any leads on what NONSTOP means.
The Tandem Computers "NONSTOP" was a product line in use by various government agencies for secure (fault-tolerant) computing for a long time. I'd look there for starters. --Tim May -- Timothy C. May tcmay@got.net Corralitos, California Political: Co-founder Cypherpunks/crypto anarchy/Cyphernomicon Technical: physics/soft errors/Smalltalk/Squeak/agents/games/Go Personal: b.1951/UCSB/Intel '74-'86/retired/investor/motorcycles/guns