At 04:36 PM 9/25/2013, you wrote:

What threat are you trying to prevent that isn't already solved by the use of cryptography alone?

Transceiver vulnerabilities of the Internet, seemingly inherently insecure by design. So looking for possibilities of moving encrypted goods by other means not betrayed by faulty shipment and addled by ubiquity and familiarity. Not that that is original by any stretch, wizards are jawing about a new internet, secure by design. May take a while, so workarounds of the present piece of carrion might be useful. Not to overlook a new-fangled Snowden loosening the controls of comsec technology beyond his and our PK-packet-tech era comprehension. So beyond mathematically-enthroned encryption what lies awaiting disclosure. Oldies might suffice if dutifully studied and elaborted. Thus the reference to NSA's backroom of pre-internet-PK comsec tech which could be in the forefront, cutting/bleeding edge.