The short summary of CurveCP is that it's essentially an encrypted and authenticated TCP[1] (tunneled over UDP). The main selling point is that it's fast, partl

The short summary of CurveCP is that it's essentially an encrypted and authenticated TCP[1] (tunneled over UDP). The main selling point is that it's fast, partly by clever protocol design and mostly by use of highly-efficient elliptic curve cryptography. It's really cool, but sadly probably doomed to obscurity - unencrypted TCP/SSL/IPSec are "good enough". [1] Actually, Dan Kaminsky stated that it's perfectly usable as a UDP replacement.