Description: Blockchain Researcher
Blockchain Researcher
For the past few months, I’ve been working with Clara Shikhelman at Chaincode Labs on the issue of jamming attacks in the Lightning Network.
Lightning is currently source-routed. This means that each sender does a local route search on the full network graph. This may become unsustainable as Lightning grows grows. Naively outsourcing route discovery to dedicated servers harms privacy: the servers know who is paying whom. The LightPIR paper proposes a solution. The authors combine private information retrieval with all-pairs-shortest-path pre-computation with hub labeling, optimized for real LN topology. In this post, I summarize the LightPIR pro