NNCP -- store-and-forward E2EE F2F network building utilities

[stargrave at stargrave.org]

Node to Node copy http://www.nncpgo.org/ is a collection of utilities
simplifying secure store-and-forward files and mail exchanging.

This utilities are intended to help build up small size (dozens of
nodes) ad-hoc friend-to-friend (F2F) statically routed darknet networks
for fire-and-forget secure reliable files, file requests and Internet
mail transmission. All packets are integrity checked, end-to-end
encrypted, explicitly authenticated by known participants public keys.
Onion encryption is applied to relayed packets. Each node acts both as a
client and server, can use push and poll behaviour model.

Main difference from existing UUCP and FTN solutions, except encryption
and authentication, is out-of-box offline sneakernet/floppynet, dead
drops and air-gapped computers support. But online TCP daemon with
full-duplex resumable data transmission exists and is built on top of
Noise protocol http://noiseprotocol.org/.

Where can it be useful? Occasional connection between mail servers,
slow/unreliable/expensive communication links, high-volume data
transfer, extreme terrestrial environments with no link, building of
private, isolated MitM-resistant networks, highly secure isolated
air-gap computers, network censorship bypassing, and even
Reconnaissance, spying and intelligence.