password

local password = "wasdf"
local enterd = ""


function creGUI()
    term.setBackgroundColor(colors.blue)
    term.clear()
    term.setCursorPos(4, 7)
    term.write("enter password")
    for i=0,#password do
        term.setCursorPos(i*4, 9)
        if i<=#enterd then
            term.write("*")
        else
            term.write("_")
        end
    end
end

while 1 do
    creGUI()
    local event = {os.pullEventRaw()}
    if event[1]=="key" then
        enterd = enterd..keys.getName(event[2])
    end
    if password==enterd then
        term.setBackgroundColor(colors.black)
        term.clear()
        term.setCursorPos(1, 1)
        sleep(0.5)
        break
    end
    if #password <= #enterd then
        enterd = ""
    end
end