DoorCardGen

local function fetch(URL)
    local h = http.get(URL)
    local text = h.readAll()
    h.close()
    return text
end

local function fwrite(file, data)
    local f = fs.open(file, "w")
    f.write(data)
    f.close()
end

local ECC = loadstring(fetch "https://pastebin.com/raw/Sc0DU3rA")() "ecc"

local function hexize(key)
    local out = ""
    for _, v in pairs(key) do
        out = out .. string.format("%.2x", v)
    end
    return out
end

write "Clearance level: "
local level = tonumber(read())

local pub, priv = ECC.keypair()
fwrite("disk/keyfile", hexize(priv))
print "Keyfile written to disk"

print "Please add the linked text to your door configuration."
fwrite(".temp", string.format([[["%s"] = %d]], hexize(pub), level))
shell.run "pastebin put .temp"