certificate.lua

return {
encryptCertificate = function(cert)
  local crt={A=50,B=51,C=52,D=53,E=54,F=55,G=56,H=57,I=58,J=59,K=60,L=61,M=62,N=63,O=64,P=65,Q=66,R=67,S=68,T=69,U=70,V=71,W=72,X=73,Y=74,Z=75}
  local final = ""
  for i = 1, cert:len() do
    local k = cert:sub(i,i)
    if not tonumber(k) then
      final = final .. crt[string.upper(cert:sub(i,i))]
    else
      final = final .. "0" .. tostring(k)
    end
  end
  return final
end,
decryptCertificate = function(cert)
  local crt={50="A",51="B",52="C",53="D",54="E",55="F",56="G",57="H",58="I",59="J",60="K",61="L",62="M",63="N",64="O",65="P",66="Q",67="R",68="S",69="T",70="U",71="V",72="W",73="X",74="Y",75="Z"}
  local final = ""
  if cert:len() % 2 > 0 then return final end
  for i = 1, cert:len(), 2 do
    local k = tonumber(i)
    if crt[k] then
        final = final .. tostring(crt[k])
    else
        final = final .. tostring(k:sub(2,2))
    end
  end
  return final
end}