Sample code for 30+ languages & platforms
AutoIt

Decode Base64

Demonstrates how to decode base64.

Chilkat AutoIt Downloads

AutoIt
Local $bSuccess = False

$oBd = ObjCreate("Chilkat.BinData")

;  Append a base64 string to bd.
$bSuccess = $oBd.AppendEncoded("c2VjcmV0","base64")

;  The bd now contains the decoded bytes.
;  Let's say it was a password string..
Local $sPassword = $oBd.GetString("utf-8")

;  Decodes to "secret".
ConsoleWrite("password = " & $sPassword & @CRLF)