(VBScript) Base64url Encoding

Base64url encoding is identical to base64 encoding except it uses non-reserved URL characters (e.g. '–' is used instead of '+', and '_' is used instead of '/') and it omits the padding characters.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

success = 0

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

set pkey = CreateObject("Chilkat.PrivateKey")
set rsa = CreateObject("Chilkat.Rsa")
success = rsa.GenKey(1024,pkey)
success = rsa.UsePrivateKey(pkey)

strData = "This is the string to be signed."

' Get the signature in base64url
rsa.EncodingMode = "base64url"
strSig = rsa.SignStringENC(strData,"sha256")

outFile.WriteLine(strSig)

outFile.Close