goking / lit

Lightning Network node software

lit - a lightning node you can run on your pwn

Under development, not for use with real money.

Installing on Linux

1. Start by installing Go v1.6.

• Check this tutorial out: https://www.digitalocean.com/community/tutorials/how-to-install-go-1-6-on-ubuntu-14-04
• TIP: You may want to install Go in a more localized place to keep your system cleaner from stray files.

2. Make sure your Go paths are set correctly: the .../go/bin path is in $PATH, $GOROOT is set to .../go/, and $GOPATH is the location of where you want lit to be.

3. Download the lit project: go get github.com/mit-dci/lit

4. The go get will fail.

• Lit uses btcd libraries, and btcd does not yet have segwit support in master. This will hopefully be merged soon, before segwit activates on mainnet.
• I have a fork of btcd from roasbeef/segwit, and could make it go-gettable by changing all the imports, but hopefully it will be merged in soon.
• To make it work, switch to the adiabat/btcd libraries:

# github.com/mit-dci/lit/uspv
uspv/eight333.go:406: undefined: wire.InvTypeWitnessBlock
... other errors.

user@host:~/go/src/github.com/mit-dci/lit$ cd ../../btcsuite/btcd/

user@host:~/go/src/github.com/btcsuite/btcd$ git remote add adiabat https://github.com/adiabat/btcd
user@host:~/go/src/github.com/btcsuite/btcd$ git fetch adiabat
user@host:~/go/src/github.com/btcsuite/btcd$ git checkout adiabat/master

user@host:~/go/src/github.com/btcsuite/btcd$ cd ../btcutil

user@host:~/go/src/github.com/btcsuite/btcutil$ git remote add adiabat https://github.com/adiabat/btcutil
user@host:~/go/src/github.com/btcsuite/btcutil$ git fetch adiabat
user@host:~/go/src/github.com/btcsuite/btcutil$ git checkout adiabat/master

5. Build, compile, and install: go get install

Folders:

cmd

has some rpc client code to interact with the lit node. Not much there yet

elkrem

a hash-tree for storing log(n) items instead of n

lndc

lightning network data connection -- send encrypted / authenticated messages between nodes

lnutil

some widely used utility functions

portxo

portable utxo format, exchangable between node and base wallet (or between wallets). Should make this into a BIP once it's more stable.

qln

A quick, channel implementation with databases. Doesn't do multihop yet.

sig64

Library to make signatures 64 bytes instead of 71 or 72 or something

watchtower

Unlinkable outsourcing of channel monitoring

uspv

An spv wallet library