(PureBasic) 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 PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkPrivateKey.pb"
IncludeFile "CkRsa.pb"

Procedure ChilkatExample()

    success.i = 0

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

    pkey.i = CkPrivateKey::ckCreate()
    If pkey.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    rsa.i = CkRsa::ckCreate()
    If rsa.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkRsa::ckGenKey(rsa,1024,pkey)
    CkRsa::ckUsePrivateKey(rsa,pkey)

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

    ; Get the signature in base64url
    CkRsa::setCkEncodingMode(rsa, "base64url")
    strSig.s = CkRsa::ckSignStringENC(rsa,strData,"sha256")

    Debug strSig


    CkPrivateKey::ckDispose(pkey)
    CkRsa::ckDispose(rsa)


    ProcedureReturn
EndProcedure