Hello all,

Inspired by a conversation with arma, I have been working on designing a UDP based protocol to serve as the bulk data transport for something along the lines of "obfs3, but over UDP". The spec document is approaching the point where I would like to have increased public review before I go and implement it. People who sit in #tor-dev probably have seen various revisions of this draft already.

Some notes: * This is heavily inspired by SSU from the i2p project, and Dust by Brandon Wiley. * Ensuring that data gets delivered reliably and in order is outside the scope of this document. Such things are a well researched problem so my reference implementation will likely draw upon an existing protocol instead of reinventing the wheel here. * As far as existing work in this area, the only other protocols that attempt to do similar things are i2p's SSU and Dust. * LODP assumes that there is a shared secret between peers to attempt to thwart active probing attacks. * As part of my evil plans, "secure fingerprinting resistant UDP" is something useful to have. * Open questions/things that are subject to change are tagged with XXX.

Questions, comments, feedback appreciated.