Generate SSL token in Lua

ossl_example.lua

-- Includes
local openssl = require('openssl')
local uuid = require('openssl.rand').bytes

-- Function to generate a UUID
local function generateUUID()
    local randomBytes = uuid(16)  -- 16 bytes of random data
    local template = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'
    local d = {}
    for i = 1, #randomBytes do
        d[i] = string.format("%02x", string.byte(randomBytes, i))
    end
    local i = 0
    return string.gsub(template, '[xy]', function (c)
        local v = tonumber(d[i + 1] or "0", 16) -- Default to 0 if nil
        if c == 'x' then
            v = v
        elseif c == 'y' then
            v = (v % 4) + 8
        end
        i = i + 1
        return string.format('%x', v)
    end)
end