Sample code for 30+ languages & platforms
B4X

Decode Base64

Demonstrates how to decode base64.

Chilkat B4X Downloads

B4X
Dim success As Boolean = False

Dim bd As ChilkatBinData
bd.Initialize

'  Append a base64 string to bd.
success = bd.AppendEncoded("c2VjcmV0", "base64")

'  The bd now contains the decoded bytes.
'  Let's say it was a password string..
Dim password As String = bd.GetString("utf-8")

'  Decodes to "secret".
Log("password = " & password)