Consider Sphinx for Onion Routing

[haraldh]

Whitepaper: http://freehaven.net/anonbib/cache/DBLP:conf/sp/DanezisG09.pdf

Presentation: https://www.youtube.com/watch?v=34TKXELJa2c

Code: https://github.com/DonnchaC/sphinx

[GrayHatter]

Okay, but why is it better? Before I read the whitepaper, I want to know what I'm looking for?

[haraldh]

Comparison to TOR:
Short paper: http://www.cypherpunks.ca/~iang/pubs/SphinxOR.pdf
Longer paper: http://cacr.uwaterloo.ca/techreports/2009/cacr2009-33.pdf

TLDR:
"Our new circuit constructions are also secure in the universal composability framework, a property that was missing from the original constructions. "
"Importantly, the circuit construction messages for these new protocols are significantly smaller than those in the original protocol and there is no addition to a user’s computational cost. "
"Therefore, our Sphinx-based design achieves the same security guarantees with much smaller messages."