JWT Validation implementation for HAProxy Lua host
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README.md

JSON Web Token (JWT) library for HAProxy

This is a Lua library for HAProxy that will verify JWT tokens.

Install

The jwtverify.lua file has these dependencies:

Install like so:

git clone https://github.com/haproxytech/haproxy-lua-jwt.git
cd haproxy-lua-jwt
chmod +x ./install.sh
sudo ./install.sh luajwt

You have several installation modes:

Command Meaning
sudo install.sh luajwt Installs jwtverify.lua and its dependencies to /usr/local/share/lua/5.3/jwtverify.lua
sudo install.sh haproxy Installs HAProxy
sudo install.sh all Installs HAProxy and jwtverify.lua and its dependencies

Sample

A sample application can be found at https://github.com/haproxytechblog/haproxy-jwt-vagrant.

Usage

  1. Sign up for an account with an OAuth token provider, such as https://auth0.com
  2. Create a new API on the Auth0 website
  3. Create a new "Machine to Machine Application" on the Auth0 website, optionally granting it "scopes"
  4. Download the public key certificate for your application on the Auth0 website via Applications > My App > Settings > Show Advanced Settings > Certificates > Download Certificate. Auth0 signs tokens using this key. Convert it using openssl x509 -pubkey -noout -in ./mycert.pem > pubkey.pem.
  5. Update the HAProxy configuration file by:
    • Copy haproxy-example.cfg to /etc/haproxy/haproxy.cfg and restart HAProxy via sudo systemctl restart haproxy
    • or run it from this directory via sudo haproxy -f ./haproxy-example.cfg
  6. Get a JSON web token (JWT) from your authentication server by following the Quick Start on the Auth0 website, under the Applications tab, for your Machine to Machine application.
  7. Make requests to your API and attach the JWT in the Authorization header. You should get a successful response.