(Visual FoxPro) 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

LOCAL lnSuccess
LOCAL loPkey
LOCAL loRsa
LOCAL lcStrData
LOCAL lcStrSig

lnSuccess = 0

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

loPkey = CreateObject('Chilkat.PrivateKey')
loRsa = CreateObject('Chilkat.Rsa')
loRsa.GenKey(1024,loPkey)
loRsa.UsePrivateKey(loPkey)

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

* Get the signature in base64url
loRsa.EncodingMode = "base64url"
lcStrSig = loRsa.SignStringENC(lcStrData,"sha256")

? lcStrSig

RELEASE loPkey
RELEASE loRsa