encryptSID

function encryptSID(sid) {
  sid = String(sid);
  
  var sidLength = sid.length;

  var encryptedSID = [];

  for (var index = 0; index < sidLength; index++) {
    var e = sid.charAt(index);
    switch (index) {
    case 0:
      switch (e) {
        case "0":
          encryptedSID[index] = "58";
          break;
        case "1":
          encryptedSID[index] = "59";
          break;
        case "9":
          encryptedSID[index] = "51";
          break;
        default:
          encryptedSID[index] = "??";
      }
      break;
    case 1:
      switch (e) {
        case "0":
          encryptedSID[index] = "1f";
          break;
        case "1":
          encryptedSID[index] = "1e";
          break;
        case "2":
          encryptedSID[index] = "1d";
          break;
        case "3":
          encryptedSID[index] = "1c";
          break;
        case "4":
          encryptedSID[index] = "1b";
          break;
        case "5":
          encryptedSID[index] = "1a";
          break;
        case "6":
          encryptedSID[index] = "19";
          break;
        case "7":
          encryptedSID[index] = "18";
          break;
        case "8":
          encryptedSID[index] = "17";
          break;
        case "9":
          encryptedSID[index] = "16";
          break;
        default:
          encryptedSID[index] = "??";
      }
        break;
    case 2:
        switch (e) {
        case "0":
          encryptedSID[index] = "aa";
          break;
        case "1":
          encryptedSID[index] = "ac";
          break;
        case "2":
          encryptedSID[index] = "af";
          break;
        case "3":
          encryptedSID[index] = "ae";
          break;
        case "4":
          encryptedSID[index] = "a9";
          break;
        case "5":
          encryptedSID[index] = "a8";
          break;
        case "6":
          encryptedSID[index] = "??";
          break;
        case "7":
          encryptedSID[index] = "??";
          break;
        case "8":
          encryptedSID[index] = "??";
          break;
        case "9":
          encryptedSID[index] = "??";
          break;
        default:
          encryptedSID[index] = "??";
        }
        break;
    case 3:
        switch (e) {
        case "0":
          encryptedSID[index] = "87";
          break;
        case "1":
          encryptedSID[index] = "86";
          break;
        case "2":
          encryptedSID[index] = "85";
          break;
        case "3":
          encryptedSID[index] = "84";
          break;
        case "4":
          encryptedSID[index] = "83";
          break;
        case "5":
          encryptedSID[index] = "82";
          break;
        case "6":
          encryptedSID[index] = "81";
          break;
        case "7":
          encryptedSID[index] = "80";
          break;
        case "8":
          encryptedSID[index] = "8f";
          break;
        case "9":
          encryptedSID[index] = "8e";
          break;
        default:
          encryptedSID[index] = "??";
        }
        break;
    case 4:
        switch (e) {
        case "0":
          encryptedSID[index] = "73";
          break;
        case "1":
          encryptedSID[index] = "72";
          break;
        case "2":
          encryptedSID[index] = "71";
          break;
        case "3":
          encryptedSID[index] = "70";
          break;
        case "4":
          encryptedSID[index] = "77";
          break;
        case "5":
          encryptedSID[index] = "76";
          break;
        case "6":
          encryptedSID[index] = "75";
          break;
        case "7":
          encryptedSID[index] = "74";
          break;
        case "8":
          encryptedSID[index] = "7b";
          break;
        case "9":
          encryptedSID[index] = "7a";
          break;
        default:
          encryptedSID[index] = "??";
        }
        break;
    case 5:
        switch (e) {
        case "0":
          encryptedSID[index] = "89";
          break;
        case "1":
          encryptedSID[index] = "88";
          break;
        case "2":
          encryptedSID[index] = "8b";
          break;
        case "3":
          encryptedSID[index] = "8a";
          break;
        case "4":
          encryptedSID[index] = "8d";
          break;
        case "5":
          encryptedSID[index] = "8c";
          break;
        case "6":
          encryptedSID[index] = "8f";
          break;
        case "7":
          encryptedSID[index] = "8e";
          break;
        case "8":
          encryptedSID[index] = "81";
          break;
        case "9":
          encryptedSID[index] = "80";
          break;
        default:
          encryptedSID[index] = "??";
        }
        break;
    case 6:
        switch (e) {
        case "0":
          encryptedSID[index] = "39";
          break;
        case "1":
          encryptedSID[index] = "38";
          break;
        case "2":
          encryptedSID[index] = "3b";
          break;
        case "3":
          encryptedSID[index] = "3a";
          break;
        case "4":
          encryptedSID[index] = "3d";
          break;
        case "5":
          encryptedSID[index] = "3c";
          break;
        case "6":
          encryptedSID[index] = "3f";
          break;
        case "7":
          encryptedSID[index] = "3e";
          break;
        case "8":
          encryptedSID[index] = "31";
          break;
        case "9":
          encryptedSID[index] = "30";
          break;
        default:
          encryptedSID[index] = "??";
        }
        break;
    }
  }

  return encryptedSID.join("");
}