B4X Requires Chilkat v11.0.0+

Base64url Encoding

See more Encryption Examples

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. B4X

Dim success As Boolean = False

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

Dim pkey As ChilkatPrivateKey
pkey.Initialize("pkey")
Dim rsa As ChilkatRsa
rsa.Initialize
rsa.GenKey(1024, pkey)
rsa.UsePrivateKey(pkey)

Dim strData As String = "This is the string to be signed."

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

Log(strSig)