LNURL-auth demo

A Go simple client-server application implementing LNURL-auth strategy based on the LUD-04 RFC.

Server

cmd/server directory contains a simple HTTP server implementing LNURL-auth authentication strategy. There is a web page showing the LNURL-auth URL that can be used for Bitcoin Lightning Wallet application to authenticate. After logging in, the server will show the public key of the authenticated user.

The server can be run using the following command:

go run ./cmd/server \
    --hostname http://localhost:8080 \
    --port 8080

Client

cmd/client directory contains all the mandatory tools used for authentication as a client. It performs as a Bitcoin Lightning Wallet application that can generate seeds, derive public-private key pairs and authenticate user from the derived keys.

Before authentication, users have to set up their wallet using the following command. This will generates a random mnemonic acting as a master private key.

go run ./cmd/client mnemonic

After mnemonic is generated as mnemonic.txt file, you can now authenticate using LNURL using the following command, replacing <lnurl> with your desired URL.

go run ./cmd/client auth <lnurl>