local jwt = require "luajwt"

local key = "example_key"

local payload = {
	iss = "12345678",
	nbf = os.time(),
	exp = os.time() + 3600,
}

-- encode
local alg = "HS256" -- (default)
local token, err = jwt.encode(payload, key, alg)

-- token: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiIx(cutted)...

-- decode and validate
local validate = true -- validate signature, exp and nbf (default: true)
local decoded, err = jwt.decode(token, key, validate)

-- decoded: { ["iss"] = 12345678, ["nbf"] = 1405108000, ["exp"] = 1405181916 }

-- only decode
local unsafe, err = jwt.decode(token)

-- unsafe:  { ["iss"] = 12345678, ["nbf"] = 1405108000, ["exp"] = 1405181916 }